CN110316913B - Combined desalination wastewater treatment system for synchronously recovering salt difference energy and chemical energy in sewage - Google Patents
Combined desalination wastewater treatment system for synchronously recovering salt difference energy and chemical energy in sewage Download PDFInfo
- Publication number
- CN110316913B CN110316913B CN201910708840.6A CN201910708840A CN110316913B CN 110316913 B CN110316913 B CN 110316913B CN 201910708840 A CN201910708840 A CN 201910708840A CN 110316913 B CN110316913 B CN 110316913B
- Authority
- CN
- China
- Prior art keywords
- concentration salt
- wastewater
- low
- salt
- fresh water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 150000003839 salts Chemical class 0.000 title claims abstract description 228
- 239000000126 substance Substances 0.000 title claims abstract description 30
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 27
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 19
- 239000010865 sewage Substances 0.000 title claims abstract description 15
- 239000002351 wastewater Substances 0.000 claims abstract description 150
- 239000013505 freshwater Substances 0.000 claims abstract description 86
- 238000000909 electrodialysis Methods 0.000 claims abstract description 76
- 239000012528 membrane Substances 0.000 claims abstract description 56
- 244000005700 microbiome Species 0.000 claims abstract description 29
- 230000000813 microbial effect Effects 0.000 claims abstract description 27
- 239000003011 anion exchange membrane Substances 0.000 claims abstract description 26
- 238000005341 cation exchange Methods 0.000 claims abstract description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 20
- 239000005416 organic matter Substances 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 239000000741 silica gel Substances 0.000 claims description 32
- 229910002027 silica gel Inorganic materials 0.000 claims description 32
- 238000011033 desalting Methods 0.000 claims description 21
- 150000001768 cations Chemical class 0.000 claims description 11
- 150000001450 anions Chemical class 0.000 claims description 10
- 150000002500 ions Chemical class 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000000593 degrading effect Effects 0.000 claims description 5
- 230000026058 directional locomotion Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 9
- 239000011780 sodium chloride Substances 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 241000219198 Brassica Species 0.000 description 8
- 235000003351 Brassica cretica Nutrition 0.000 description 8
- 235000003343 Brassica rupestris Nutrition 0.000 description 8
- QKSKPIVNLNLAAV-UHFFFAOYSA-N bis(2-chloroethyl) sulfide Chemical compound ClCCSCCCl QKSKPIVNLNLAAV-UHFFFAOYSA-N 0.000 description 8
- 235000010460 mustard Nutrition 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000006731 degradation reaction Methods 0.000 description 6
- 235000021110 pickles Nutrition 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000855 fermentation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 210000004944 mitochondria-rich cell Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- -1 potassium ferricyanide Chemical compound 0.000 description 1
- 239000000276 potassium ferrocyanide Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- XOGGUFAVLNCTRS-UHFFFAOYSA-N tetrapotassium;iron(2+);hexacyanide Chemical compound [K+].[K+].[K+].[K+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] XOGGUFAVLNCTRS-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/4604—Treatment of water, waste water, or sewage by electrochemical methods for desalination of seawater or brackish water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/005—Combined electrochemical biological processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/16—Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/46115—Electrolytic cell with membranes or diaphragms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Electrochemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Analytical Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
本发明公开了一种同步回收盐差能和污水中化学能的联合脱盐废水处理系统，由微生物反向电渗析池和电渗析池组成，其特征在于：所述微生物反向电渗析池用于回收高浓度盐废水与低浓度盐淡水间的盐差能以及高浓度盐废水中有机物的化学能，并产生电能；所述电渗析池用于利用微生物反向电渗析池产生的电能对高盐废水进行脱盐；所述微生物反向电渗析池包括阳极腔室和阴极腔室，所述阳极腔室和阴极腔室由膜组进行分隔；在阳极腔室内设置有阳极碳刷，该阳极碳刷的表面附着产电微生物；在阴极腔室内设置有空气阴极；所述膜组包括阴离子交换膜、阳离子交换膜、高浓度盐废水流道和低浓度盐淡水流道；本发明还可广泛应用在能源、化工、环保等领域。
The invention discloses a combined desalination wastewater treatment system for synchronously recovering salt difference energy and chemical energy in sewage, which is composed of a microbial reverse electrodialysis tank and an electrodialysis tank. The salt difference energy between the high-concentration saline wastewater and the low-concentration saline fresh water and the chemical energy of the organic matter in the high-concentration saline wastewater are recovered, and electric energy is generated; The wastewater is desalinated; the microbial reverse electrodialysis cell includes an anode chamber and a cathode chamber, and the anode chamber and the cathode chamber are separated by a membrane group; an anode carbon brush is arranged in the anode chamber, and the anode carbon brush Electricity-generating microorganisms are attached to the surface of the membrane; an air cathode is arranged in the cathode chamber; the membrane group includes an anion exchange membrane, a cation exchange membrane, a high-concentration salt waste water flow channel and a low-concentration salt fresh water flow channel; the present invention can also be widely used in Energy, chemical industry, environmental protection and other fields.
Description
Technical Field
The invention relates to the field of wastewater treatment, in particular to a combined desalination wastewater treatment system for synchronously recovering salt difference energy and sewage chemical energy.
Background
In recent years, the tuber mustard industry has been rapidly developed and sold in a large quantity. But it discharges a large amount of wastewater having high salt and high concentration of organic matter during the production process. Statistically, about 500 ten thousand tons of waste water of hot pickled mustard tuber are generated in the three gorges reservoir area each year, and the discharge amount thereof shows a tendency to increase year by year. If the waste water flows into the three gorges reservoir area without being treated, the ecological environment of the reservoir area is easily seriously influenced by the excessively high salinity and organic matter content (chemical oxygen demand, COD value of 3000-20000 mg/L).
At present, most tuber mustard production plants directly utilize fresh water to dilute waste water from the perspective of saving cost, and then adopt an anaerobic fermentation method to treat organic matters in the waste water. According to the field research, the salt concentration in the preserved szechuan pickle waste water is as high as 200g/L, so that the anaerobic fermentation microorganisms are prevented from being dehydrated and dead in a high-salt environment, and the waste water can reach the national discharge standard that the salinity is less than 20 g/L. And products after anaerobic fermentation are difficult to collect, so that a large amount of chemical energy contained in organic matters in the wastewater is wasted.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a combined desalination wastewater treatment system for synchronously recovering salt difference energy and sewage chemical energy.
The technical scheme of the invention is as follows: the utility model provides a joint desalination effluent disposal system of synchronous recovery salt difference ability and chemical energy in sewage, comprises microorganism reverse electrodialysis pond and electrodialysis cell, its characterized in that:
the microorganism reverse electrodialysis cell is used for recovering the salt difference energy between the high-concentration salt wastewater and the low-concentration salt fresh water and the chemical energy of organic matters in the high-concentration salt wastewater and generating electric energy.
The electrodialysis cell is used for desalting the high-salinity wastewater by using the electric energy generated by the microorganism reverse electrodialysis cell.
The microbial reverse electrodialysis cell comprises an anode chamber and a cathode chamber, wherein the anode chamber and the cathode chamber are separated by a membrane group; an anode carbon brush is arranged in the anode cavity, and electrogenesis microorganisms are attached to the surface of the anode carbon brush; an air cathode is arranged in the cathode chamber; the membrane group comprises an anion exchange membrane, a cation exchange membrane, a high-concentration salt wastewater runner and a low-concentration salt fresh water runner.
The electrodialysis pool is internally provided with a second cation exchange membrane and a second anion exchange membrane, and the second anion exchange membrane and the second cation exchange membrane divide the electrodialysis pool into an anode chamber, a desalting chamber and a cathode chamber; the cathode chamber and the anode chamber are respectively provided with a cathode electrode and an anode electrode; the cathode electrode and the anode electrode are respectively connected with an anode carbon brush and an air cathode of the microbial reverse electrodialysis cell 1 so as to receive electric energy generated by the microbial reverse electrodialysis cell.
High-concentration salt wastewater and low-concentration salt fresh water are pumped into the membrane group and flow along the high-concentration salt wastewater runner and the low-concentration salt fresh water runner respectively, and due to different salt concentrations in the high-concentration salt wastewater and the low-concentration salt fresh water, the generated salt difference enables cations in the high-concentration salt wastewater and the low-concentration salt fresh water to enter the cathode chamber through the cation exchange membrane, anions enter the anode chamber through the anion exchange membrane, and the directional movement of the cations and the anions generates electric energy; and after the salt difference energy is recovered by the module, the discharged high-concentration salt wastewater enters the desalting chamber of the electrodialysis cell, and Na + and Cl-in the high-concentration salt wastewater in the desalting chamber respectively migrate to the cathode chamber and the anode chamber through a second cation exchange membrane and a second anion exchange membrane respectively, so that the desalting treatment is realized.
Desalting the high-concentration salt wastewater to obtain low-salt wastewater, pumping the low-salt wastewater into an anode chamber of a microorganism reverse electrodialysis cell to provide organic matters for the electricity-generating microorganisms attached to an anode carbon brush and simultaneously perform degradation treatment, and discharging the obtained low-salt low-organic matter wastewater; and the directional movement of the cations and the anions in the module, the potential difference generated at the two ends of the module enhances the transmission of the ions and the movement of electrons in an external circuit, and plays a role of an internal power supply so as to improve the rate of degrading organic matters and the electricity generation performance of the anode carbon brush.
The invention utilizes the characteristic of high salt and high organic matter COD of the preserved szechuan pickle waste water, if the reverse electrodialysis principle is adopted, the salt difference energy can be captured in the form of electric energy from the salinity difference gradient between the high salinity waste water and the fresh water, and the microbial energy conversion technology can be utilized to obtain the electric energy while degrading the COD in the waste water, namely, the chemical energy in the organic matter is recovered by the electric energy. The recovered electric energy can supply power to the electrodialysis cell to realize the desalination of the preserved szechuan pickle production wastewater. Therefore, the invention firstly provides the MRC-ED system for treating the waste water of the preserved szechuan pickle production and recovering the salt by utilizing the combination of the microbial reverse osmosis cell and the electrodialysis cell system. On one hand, the system captures salt difference energy by utilizing the concentration gradient between high salt water and fresh water, simultaneously recovers electric energy in organic matters by utilizing the microbial electrochemical principle, and uses the recovered electric energy for electrodialysis, thereby achieving the purposes of reducing the treatment cost of tuber mustard wastewater, recovering the salt in the tuber mustard wastewater, reducing the use of a large amount of fresh water resources and realizing the purposes of energy conservation and emission reduction.
The invention firstly provides a method for treating waste water generated in the production process of preserved szechuan pickle by utilizing a microorganism reverse electrodialysis cell, and simultaneously recovering salt difference energy and chemical energy in organic waste water, thereby realizing the synchronous recovery of the chemical energy and the salt difference energy in the preserved szechuan pickle waste water; and the electric energy of the microorganism reverse electrodialysis cell is applied to the electrodialysis cell, so that the in-situ utilization of the electric energy is realized, the system cost is reduced, and the practical application is facilitated.
According to the preferable scheme of the combined desalination wastewater treatment system for synchronously recovering the salt difference energy and the chemical energy in the sewage, the desalination chamber is provided with a wastewater electrodialysis inlet and a wastewater electrodialysis outlet.
The membrane group is provided with a high-concentration salt wastewater outlet, a low-concentration salt fresh water inlet, a high-concentration salt wastewater inlet and a low-concentration salt fresh water outlet; the high concentration salt waste water export is linked together through the high concentration salt waste water runner that sets up in the module with the useless import of high concentration salt, and low concentration salt fresh water import is linked together through the low concentration salt fresh water runner that sets up in the module with the low concentration salt fresh water export.
According to the preferable scheme of the combined desalination wastewater treatment system for synchronously recovering the salt difference energy and the chemical energy in the sewage, the membrane group comprises a plurality of membrane group units; anion exchange membranes, first silica gel sheets, cation exchange membranes and second silica gel sheets are alternately arranged in each membrane group unit.
The first silica gel sheet is provided with a high-concentration salt wastewater runner and two low-concentration salt fresh water through holes; the second silica gel sheet is provided with a low-concentration salt fresh water runner and two high-concentration salt waste water through holes; the two low-concentration salt fresh water through holes respectively correspond to the outflow end and the inflow end of a low-concentration salt fresh water flow channel arranged on the second silica gel sheet; the two high-concentration salt wastewater through holes respectively correspond to the outflow end and the inflow end of a high-concentration salt wastewater runner arranged on the first silica gel sheet.
The anion exchange membrane is provided with a first through hole and a second through hole, and the first through hole corresponds to the outflow end of the high-concentration salt wastewater runner arranged on the first silica gel sheet; the inlet end of a low-concentration salt fresh water flow channel arranged on the second silica gel sheet corresponds to the inlet end of the low-concentration salt fresh water flow channel through a hole II; and a third through hole and a fourth through hole are formed in the cation exchange membrane, the third through hole corresponds to the inflow end of the high-concentration salt wastewater runner arranged on the first silica gel sheet, and the fourth through hole corresponds to the outflow end of the low-concentration salt fresh water runner arranged on the second silica gel sheet.
According to the preferable scheme of the combined desalination wastewater treatment system for synchronously recovering the salt difference energy and the chemical energy in the sewage, 2 or more than 2 microbial reverse electrodialysis cells are provided; the electrodes of all the microorganism reverse electrodialysis cells are connected in series.
The combined desalination wastewater treatment system for synchronously recovering the salt difference energy and the chemical energy in the sewage has the beneficial effects that:
the combined desalination wastewater treatment system is adopted to capture salt difference energy by utilizing the concentration gradient between high-salt water and fresh water according to the reverse electrodialysis principle, simultaneously recover electric energy in organic matters according to the microbial electrochemical principle, and use the recovered electric energy for electrodialysis, so that the aims of reducing the treatment cost of wastewater generated by tuber mustard production, recovering the salt in the wastewater generated by tuber mustard production and reducing the use of a large amount of fresh water resources, saving energy and reducing emission are fulfilled, the defect that the traditional tuber mustard wastewater is directly diluted by tap water is overcome, and the combined desalination wastewater treatment system has high economic and social benefits. The invention can also be widely applied to the fields of energy, chemical industry, environmental protection and the like.
Drawings
FIG. 1 is a schematic structural diagram of a combined desalination wastewater treatment system for synchronously recovering salt difference energy and chemical energy in sewage.
Fig. 2 is a schematic structural diagram of the film assembly 14.
Fig. 3 is a schematic structural view of the first silicone sheet 26.
Fig. 4 is a schematic structural view of the second silicone sheet 27.
Fig. 5 is a graph comparing the electricity generation performance of the microbial reverse electrodialysis cell 1 with that of MFC without a module.
FIG. 6 is a diagram illustrating the desalination effect of the desalination wastewater treatment system for simultaneous recovery of salt difference energy and chemical energy in wastewater according to the present invention.
Detailed Description
Referring to fig. 1 to 4, a combined desalination wastewater treatment system for synchronously recovering salt difference energy and chemical energy in sewage comprises a microbial reverse electrodialysis cell 1 and an electrodialysis cell 2.
The microbial reverse electrodialysis cell 1 is used for recovering salt difference energy between the high-concentration salt wastewater HC and the low-concentration salt fresh water LC and chemical energy of organic matters in the high-concentration salt wastewater and generating electric energy.
The electrodialysis cell 2 is used for desalting the high-salinity wastewater by using the electric energy generated by the microorganism reverse electrodialysis cell 1.
The microbial reverse electrodialysis cell comprises an anode chamber 3 and a cathode chamber 13, wherein the anode chamber 3 and the cathode chamber 13 are separated by a membrane group 14; an anode carbon brush 15 is arranged in the anode chamber 3, and electrogenic microorganisms are attached to the surface of the anode carbon brush 15; an air cathode 12 is provided in the cathode chamber 13; the membrane group 14 comprises an anion exchange membrane 8, a cation exchange membrane 9, a high-concentration salt wastewater flow passage and a low-concentration salt fresh water flow passage.
A second cation exchange membrane 21 and a second anion exchange membrane 22 are arranged in the electrodialysis cell 2, and the electrodialysis cell 2 is divided into an anode chamber 6, a desalination chamber 7 and a cathode chamber 16 by the second anion exchange membrane 22 and the second cation exchange membrane 21; a cathode electrode 20 and an anode electrode 17 are respectively arranged in the cathode chamber and the anode chamber; the cathode electrode 20 and the anode electrode 17 are respectively connected with the anode carbon brush 15 and the air cathode 12 of the microbial reverse electrodialysis cell 1 to receive the electric energy generated by the microbial reverse electrodialysis cell 1.
Pumping the high-concentration salt wastewater and the low-concentration salt fresh water into the membrane group 14, and respectively flowing along the high-concentration salt wastewater flow passage and the low-concentration salt fresh water flow passage, wherein the salinity difference between the high-concentration salt wastewater and the low-concentration salt fresh water causes cations in the high-concentration salt wastewater and the low-concentration salt fresh water to enter the cathode chamber 13 through the cation exchange membrane due to the different salt concentrations of the high-concentration salt wastewater and the low-concentration salt fresh water, the anions enter the anode chamber 3 through the anion exchange membrane, and the directional movement of the cations and the anions generates a potential difference, so that the salt difference energy is recovered; high-concentration salt wastewater discharged after the salt difference energy is recovered by the module 14 enters the desalting chamber 7 of the electrodialysis cell 2, and Na + and Cl-in the high-concentration salt wastewater respectively migrate to the cathode chamber 16 and the anode chamber 6 through the cation exchange membrane 21 and the anion exchange membrane 22, so that desalting treatment is realized.
Desalting the high-concentration salt wastewater to obtain low-salt wastewater, pumping the low-salt wastewater into an anode chamber 3 of the microbial reverse electrodialysis cell 1 to provide organic matters for the electrogenic microbes attached to the anode carbon brush 15 and simultaneously perform degradation treatment, and discharging the obtained low-salt low-organic matter wastewater; and the directional movement of the cations and the anions in the module 14 generates a potential difference, so that the transmission of ions in the solution and the movement of electrons in an external circuit are enhanced, and the anode carbon brush 15 plays a role of an internal power supply so as to improve the rate of degrading organic matters and the electricity generation performance.
The desalting chamber 7 of the electrodialysis cell 2 is provided with a wastewater electrodialysis liquid inlet and outlet 19. The anode chamber 3 of the microorganism reverse electrodialysis cell 1 is provided with a liquid inlet and a liquid outlet 18.
The membrane group 14 is provided with a high-concentration salt wastewater outlet 4, a low-concentration salt fresh water inlet 5, a high-concentration salt wastewater inlet 10 and a low-concentration salt fresh water outlet 11; high concentration salt waste water outlet 4 is linked together through the high concentration salt waste water runner that sets up with the useless import 10 of high concentration salt in the module, and low concentration salt fresh water import 5 is linked together through the low concentration salt fresh water runner that sets up in the module with low concentration salt fresh water outlet 11.
High-concentration salt wastewater is pumped into the microbial reverse electrodialysis cell 1 from the high-concentration salt wastewater inlet 10, low-concentration salt fresh water is pumped into the microbial reverse electrodialysis cell 1 from the low-concentration salt fresh water inlet 5, after salt difference energy is recovered through the module 14, the high-concentration salt wastewater is discharged from the high-concentration salt wastewater outlet 4, and the low-concentration salt fresh water is discharged from the low-concentration salt fresh water outlet 11; the low-salt high-COD wastewater entering from the liquid inlet and outlet 18 provides organic matters for electrogenic microorganisms attached to the anode carbon brush 15, and the low-salt high-COD wastewater is degraded to obtain low-salt low-COD wastewater which is discharged from the liquid inlet and outlet 18.
The high-concentration salt wastewater discharged from the high-concentration salt wastewater outlet 10 enters the intermediate chamber through the wastewater electrodialysis inlet and outlet 19 for desalination treatment, and the wastewater with low salt and high COD obtained after treatment is pumped out from the wastewater electrodialysis inlet and outlet 19 and enters the anode chamber 3 through the inlet and outlet 18.
In a specific embodiment, the membrane module 14 includes a plurality of membrane module units, and an anion exchange membrane is further disposed on a cathode side of the nth membrane module unit. Anion exchange membranes 8, first silica gel sheets 26, cation exchange membranes 9 and second silica gel sheets 27 are alternately arranged in each membrane group unit.
For convenience of processing, the first silica gel sheet 26 is provided with a high-concentration salt wastewater runner 25 and two low-concentration salt fresh water through holes 24; the second silica gel sheet 27 is provided with a low-concentration salt fresh water runner 29 and two high-concentration salt waste water through holes 30; the two low-concentration salt fresh water through holes 24 respectively correspond to the outflow end and the inflow end of a low-concentration salt fresh water runner 29 arranged on the second silica gel sheet 27; the two high-concentration salt wastewater through holes 30 correspond to the outflow end and the inflow end of the high-concentration salt wastewater runner 25 arranged on the first silica gel sheet 26 respectively.
The anion exchange membrane 8 is provided with a first through hole 23a and a second through hole 23b, and the first through hole 23a corresponds to the outflow end of the high-concentration salt wastewater channel 25 arranged on the first silica gel sheet 26; the inlet end of the low-concentration salt fresh water flow channel 29 arranged on the second silica gel sheet 27 corresponds to the through hole two 23 b; the cation exchange membrane 9 is provided with a third through hole 23c and a fourth through hole 23d, the third through hole 23c corresponds to the inflow end of the high-concentration salt wastewater runner 25 arranged on the first silica gel sheet 26, and the fourth through hole 23d corresponds to the outflow end of the low-concentration salt fresh water runner 29 arranged on the second silica gel sheet 27.
And a first through hole and a second through hole which are arranged on an anion exchange membrane arranged on the cathode side of the nth membrane group unit are respectively connected with the high-concentration salt wastewater inlet 10 and the low-concentration salt fresh water outlet 11.
The method comprises the following steps: the high-concentration salt wastewater through hole of the first membrane module unit 141 corresponds to the outflow end of the high-concentration salt wastewater runner of the second module unit and corresponds to the inflow end of the high-concentration salt wastewater runner of the first module unit, and the outflow end of the high-concentration salt wastewater runner of the first module unit is communicated with the high-concentration salt wastewater outlet 4; the low-concentration salt and fresh water through hole of the first module unit 141 corresponds to the outflow end of the low-concentration salt and fresh water runner 29 and corresponds to the inflow end of the low-concentration salt and fresh water runner of the second module unit; the inflow end of the low-concentration salt fresh water flow passage 29 is communicated with the low-concentration salt fresh water inlet 5.
The high-concentration salt wastewater through hole of the second membrane module unit 142 corresponds to the outflow end of the high-concentration salt wastewater runner of the third module unit, and simultaneously corresponds to the inflow end of the high-concentration salt wastewater runner of the second module unit 142; the low concentration salt and fresh water passing hole of the second module unit 142 corresponds to the outflow end of the low concentration salt and fresh water flow passage 29, and corresponds to the inflow end of the low concentration salt and fresh water flow passage of the third module unit.
And so on.
The high-concentration salt wastewater through hole of the nth membrane module unit 14n corresponds to the outflow end of the high-concentration salt wastewater runner of the nth module unit and corresponds to the inflow end of the high-concentration salt wastewater runner of the (n-1) th module unit; the low-concentration salt and fresh water through hole of the nth module unit 14n corresponds to the outflow end of the low-concentration salt and fresh water runner of the (n-1) th module unit; and simultaneously corresponds to the inflow end of the low-concentration salt fresh water runner 29 of the nth module unit, and the outflow end of the low-concentration salt fresh water runner 29 of the nth module unit is communicated with the low-concentration salt fresh water outlet 11; the inflow end of the high-concentration salt wastewater channel of the nth module unit is communicated with a high-concentration salt wastewater inlet 10.
And mounting holes 28 are provided at four corners of the anion exchange membrane 8, the first silica gel sheet 26, the cation exchange membrane 9 and the second silica gel sheet 27.
According to the requirement of the electrodialysis cell 2 on electric energy, two or more than two microorganism reverse electrodialysis cells 2 can be arranged; the electrodes of all the microorganism reverse electrodialysis cells are connected in series.
The working principle of the system is as follows:
when the system works, the high-concentration salt wastewater HC and the low-concentration salt fresh water LC are pumped into a membrane group 14 of the microbial reverse electrodialysis cell MRC, the high-concentration salt wastewater HC and the low-concentration salt fresh water LC respectively flow along a high-concentration salt wastewater runner and a low-concentration salt fresh water runner, and due to the fact that the salt concentration in the high-concentration salt wastewater and the low-concentration salt fresh water is different, the generated salt difference enables cations in the high-concentration salt wastewater and the low-concentration salt fresh water to enter a cathode chamber through a cation exchange membrane, anions enter an anode chamber through an anion exchange membrane, the cations and the anions are driven to move directionally by the salinity difference, and the transmission of the ions and the movement of electrons in an external circuit are enhanced by the potential difference generated at the two ends of the high-concentration salt wastewater and the low-concentration salt fresh water LC, so that the high-concentration salt wastewater.
The degradation of organic matters in the high-concentration salt wastewater is mainly carried out on an anode carbon brush. Microorganisms having organic matter degradation ability are attached to the anode carbon brush. When degraded, the microbial electrochemical reaction takes place as shown in formula 1.1:
and (3) anode reaction:
(CH2O)n+nH2O-4ne-→nCO2+4nH+formula (1.1)
The organic matter is degraded to release electrons and H +, and the electrons are transferred to the cathode through an external circuit under the action of potential difference between the anode and the cathode and generate current; at the cathode, the oxygen in the air will accept the H + in the catholyte and combine with the electrons transferred from the external circuit to react on the electrode to produce water, as shown in formula 1.2.
And (3) cathode reaction:
nO2+4nH++4ne-→2nH2o type (1.2)
The whole reaction process is as formula 1.3, the material and charge balance of the system is maintained, the organic substrate of the waste water in the anode is gradually consumed along with the continuous reaction, and the battery also obtains continuous current and power output.
And (3) total reaction: (CH)2O)n+nO2→nH2O+nCO2Formula (1.3)
Under the action of a direct current electric field (working voltage is about 1.8V) provided by the microbial reverse electrodialysis cell, Na + and Cl-in the high-concentration salt wastewater HC are respectively and directionally migrated to a cathode electrode and an anode electrode in a desalting chamber by utilizing the selective permeability of an ion exchange membrane, so as to enter cathode chambers and anode chambers at two ends. The high-concentration salt wastewater is desalted and then becomes low-salt wastewater. Because the salinity of the wastewater is obviously reduced and reaches the level capable of carrying out biochemical treatment, the part of the wastewater with low salinity and high COD can be directly introduced into the anode chamber of the MRC for organic matter degradation.
After the high-concentration salt wastewater is subjected to desalination treatment by an electrodialysis cell and MRC degradation treatment by a microorganism reverse electrodialysis cell, the salinity and COD content in the wastewater can reach the discharge standard. The extremely high concentration salt solution enriched in the cathode chamber and the anode chamber of the electrodialysis cell can be recycled. Such as industrial salt made into snow-melting salt.
Referring to fig. 5, fig. 5 is a graph comparing the power generation performance of the microbial reverse electrodialysis cell 1 with that of MFC without a module.
The experimental conditions are as follows: 200g/L (HC) of high-concentration NaCl solution and 0.5g/L (LC) of low-concentration NaCl solution are prepared. And (3) introducing HC and LC into a high-concentration salt wastewater flow channel and a low-concentration salt fresh water flow channel of the MRC through a peristaltic pump, wherein the flow rate is controlled to be 0.4 mL/min.
Preparation work before testing: and after the two poles of the MRC battery are connected with a 50 omega resistor, the anolyte is replaced. The anode potential and the cross-terminal voltage of the MRC were scanned every 10S using agilent 34970 a. The test was started with the cathode at around 150mV, when the anode potential reached around-300 mV.
The resistance of the resistance box is adjusted to 10 omega, and Data are recorded when a Data image is close to a straight line by observing the trend of a Data curve in Agilent 34970A benchmark Data Logger software. Then, the resistance of the resistance box is adjusted to 20 Ω, 30 Ω, 40 Ω, 50 Ω, 75 Ω, 100 Ω, 200 Ω, 300 Ω, 400 Ω, 600 Ω, 1000 Ω, 2000 Ω, 3000 Ω, and the anode potential and the voltage data at the cathode and anode terminals are recorded.
As can be seen from fig. 5, the electricity generation performance of the microbial reverse electrodialysis cell 1 is greatly improved over the MFC without the module.
Referring to FIG. 6, FIG. 6 is a diagram showing the desalting effect of the present invention.
Before the experiment, 1mol/L NaCl solution is prepared and then injected into the middle chamber of ED and filled. And a 0.5mmol/L potassium ferricyanide solution is introduced into a cathode chamber of the ED, and a 0.5mmol/L potassium ferrocyanide solution is introduced into an anode chamber of the ED. Four MRCs are connected in series and then connected to two ends of the ED for desalting, and the anode potential and the two-end voltage of the MRC are scanned once every 30S by using Agilent 34970A so as to monitor whether the MRC works normally or not. Sampling the solution from the middle chamber of ED every 2 hours, measuring the salinity by using a Hash HQ40D conductivity meter to obtain the salinity of the solution at the moment, recording the data, and finally obtaining the salt rejection rate of 10 hours.
As can be seen from FIG. 6, the present invention has a good desalting effect.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (4)
1. The utility model provides a joint desalination effluent disposal system of synchronous recovery salt difference ability and chemical energy in sewage, comprises microorganism reverse electrodialysis pond (1) and electrodialysis cell (2), its characterized in that:
the microorganism reverse electrodialysis cell (1) is used for recovering salt difference energy between the high-concentration salt wastewater and the low-concentration salt fresh water and chemical energy of organic matters in the high-concentration salt wastewater and generating electric energy;
the electrodialysis cell (2) is used for desalting the high-salinity wastewater by using the electric energy generated by the microorganism reverse electrodialysis cell (1);
the microbial reverse electrodialysis cell comprises an anode chamber (3) and a cathode chamber (13), the anode chamber (3) and the cathode chamber (13) being separated by a membrane group (14); an anode carbon brush (15) is arranged in the anode chamber (3), and electrogenic microorganisms are attached to the surface of the anode carbon brush (15); an air cathode (12) is arranged in the cathode chamber (13); the membrane group (14) comprises an anion exchange membrane (8), a cation exchange membrane (9), a high-concentration salt wastewater runner and a low-concentration salt fresh water runner;
a second cation exchange membrane (21) and a second anion exchange membrane (22) are arranged in the electrodialysis cell (2), and the electrodialysis cell (2) is divided into an anode chamber (6), a desalting chamber (7) and a cathode chamber (16) by the second anion exchange membrane (22) and the second cation exchange membrane (21); the cathode chamber and the anode chamber are respectively provided with a cathode electrode and an anode electrode; the cathode electrode and the anode electrode are respectively connected with an anode carbon brush (15) and an air cathode (12) of the microbial reverse electrodialysis cell (1) to receive electric energy generated by the microbial reverse electrodialysis cell (1);
high-concentration salt wastewater and low-concentration salt fresh water are pumped into a membrane group (14) and flow along a high-concentration salt wastewater flow passage and a low-concentration salt fresh water flow passage respectively, and due to different salt concentrations in the high-concentration salt wastewater and the low-concentration salt fresh water, the generated salt difference can enable cations in the high-concentration salt wastewater and the low-concentration salt fresh water to exchange cations through cationsThe membrane enters a cathode chamber (13), anions enter an anode chamber (3) through an anion exchange membrane, and the directional movement of cations and anions generates electric energy; high-concentration salt wastewater discharged after the salt difference energy is recovered by the module (14) enters the desalting chamber (7) of the electrodialysis cell (2), and Na in the high-concentration salt wastewater in the desalting chamber (7)+And Cl-The water respectively migrates to the cathode chamber (16) and the anode chamber (6) through a second cation exchange membrane (21) and a second anion exchange membrane (22) respectively to realize desalination treatment;
desalting the high-concentration salt wastewater to obtain low-salt wastewater, pumping the low-salt wastewater into an anode chamber (3) of the microorganism reverse electrodialysis cell (1), providing organic matters for electrogenesis microorganisms attached to an anode carbon brush (15), degrading the organic matters at the same time, and discharging the obtained low-salt low-organic matter wastewater; in addition, the positive ions and the negative ions in the module (14) move directionally, and the potential difference generated at the two ends of the module enhances the transmission of the ions and the movement of electrons in an external circuit, and plays the role of an internal power supply so as to improve the rate of degrading organic matters and the electricity generation performance of the anode carbon brush (15);
the combined desalination wastewater treatment system utilizes a microorganism reverse electrodialysis cell to treat high-concentration salt wastewater generated, and simultaneously recovers salt difference energy and chemical energy in organic wastewater, so as to realize synchronous recovery of the chemical energy and the salt difference energy in the wastewater; and the electric energy of the microorganism reverse electrodialysis cell is applied to the electrodialysis cell, so that the in-situ utilization of the electric energy is realized.
2. The combined desalination wastewater treatment system for synchronously recycling salt difference energy and chemical energy in sewage as claimed in claim 1, characterized in that:
the desalting chamber (7) is provided with a wastewater electrodialysis liquid inlet and outlet (19);
the membrane group (14) is provided with a high-concentration salt waste water outlet (4), a low-concentration salt fresh water inlet (5), a high-concentration salt waste water inlet (10) and a low-concentration salt fresh water outlet (11); the high-concentration salt wastewater outlet (4) is communicated with the high-concentration salt wastewater inlet (10) through a high-concentration salt wastewater runner arranged in the membrane group, and the low-concentration salt fresh water inlet (5) is communicated with the low-concentration salt fresh water outlet (11) through a low-concentration salt fresh water runner arranged in the membrane group.
3. The combined desalination wastewater treatment system for synchronously recycling salt difference energy and chemical energy in wastewater as claimed in claim 1 or 2, characterized in that: the membrane group (14) comprises a plurality of membrane group units; an anion exchange membrane (8), a first silica gel sheet (26), a cation exchange membrane (9) and a second silica gel sheet (27) are alternately arranged in each membrane group unit;
the first silica gel sheet (26) is provided with a high-concentration salt wastewater runner (25) and two low-concentration salt fresh water through holes (24); the second silica gel sheet (27) is provided with a low-concentration salt fresh water runner (29) and two high-concentration salt waste water through holes (30); the two low-concentration salt and fresh water through holes (24) respectively correspond to the outflow end and the inflow end of a low-concentration salt and fresh water flow channel (29) arranged on the second silica gel sheet (27); the two high-concentration salt wastewater through holes (30) respectively correspond to the outflow end and the inflow end of a high-concentration salt wastewater runner (25) arranged on the first silica gel sheet (26);
the anion exchange membrane (8) is provided with a first through hole and a second through hole, and the first through hole corresponds to the outflow end of the high-concentration salt wastewater runner (25) arranged on the first silica gel sheet (26); the holes II correspond to the inflow ends of low-concentration salt fresh water flow passages (29) arranged on the second silica gel sheet (27); and a third through hole and a fourth through hole are formed in the cation exchange membrane (9), the third through hole corresponds to the inflow end of a high-concentration salt wastewater runner (25) arranged on the first silica gel sheet (26), and the fourth through hole corresponds to the outflow end of a low-concentration salt fresh water runner (29) arranged on the second silica gel sheet (27).
4. The combined desalination wastewater treatment system for synchronously recycling salt difference energy and chemical energy in sewage as claimed in claim 1, characterized in that: more than two reverse electrodialysis cells (1) for the microorganisms are arranged; the electrodes of all the microorganism reverse electrodialysis cells are connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910708840.6A CN110316913B (en) | 2019-08-01 | 2019-08-01 | Combined desalination wastewater treatment system for synchronously recovering salt difference energy and chemical energy in sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910708840.6A CN110316913B (en) | 2019-08-01 | 2019-08-01 | Combined desalination wastewater treatment system for synchronously recovering salt difference energy and chemical energy in sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110316913A CN110316913A (en) | 2019-10-11 |
| CN110316913B true CN110316913B (en) | 2021-03-16 |
Family
ID=68125304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910708840.6A Active CN110316913B (en) | 2019-08-01 | 2019-08-01 | Combined desalination wastewater treatment system for synchronously recovering salt difference energy and chemical energy in sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110316913B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11855324B1 (en) | 2022-11-15 | 2023-12-26 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell with heat pump |
| US20240101453A1 (en) * | 2021-09-23 | 2024-03-28 | San Diego State University (SDSU) Foundation, dba San Diego State University Research Foundation | Bioelectrochemical system for water deionization and desalination, wastewater treatment and energy recovery |
| US12040517B2 (en) | 2022-11-15 | 2024-07-16 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell and methods of use thereof |
| US12341228B2 (en) | 2022-11-15 | 2025-06-24 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell and methods of use thereof |
| US12374711B2 (en) | 2023-11-15 | 2025-07-29 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell with heat pump |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111252867A (en) * | 2020-01-20 | 2020-06-09 | 江苏金舵环境科技有限公司 | A reverse electrodialysis reactor, wastewater treatment device and application thereof |
| CN112125389A (en) * | 2020-09-16 | 2020-12-25 | 天津大学 | A microbial forward-reverse electrodialysis cell (MERC) for simultaneous sewage treatment and seawater desalination |
| CN112624234B (en) * | 2020-11-26 | 2021-12-14 | 大连理工大学 | System and method for treating organic wastewater by using low-grade heat energy |
| US11502322B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11502323B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell and methods of use thereof |
| CN115196724B (en) * | 2022-09-19 | 2023-01-06 | 欣格瑞（山东）环境科技有限公司 | Integrated desalting device adopting exchange electrode electrochemical composite ion replacement and implementation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481178A (en) * | 2009-02-10 | 2009-07-15 | 清华大学 | Sewage treatment process and apparatus for synchronous electrogenesis desalinisation |
| WO2009077992A3 (en) * | 2007-12-17 | 2009-08-13 | Univ Ben Gurion | Apparatus and system for deionization |
| CN105236658A (en) * | 2015-11-06 | 2016-01-13 | 北京津工海水科技有限公司 | Method and system for preparing salt from seawater |
| CN205151970U (en) * | 2015-11-06 | 2016-04-13 | 北京津工海水科技有限公司 | Processing system and industrial wastewater processing system of strong brine that reverse osmosis unit discharged |
| CN105600929A (en) * | 2015-12-30 | 2016-05-25 | 哈尔滨工业大学 | Continuous flow biological electrogenesis desalting device for processing refining wastewater containing acetonitrile and application method |
| CN106698679A (en) * | 2017-01-20 | 2017-05-24 | 清华大学 | Filtering type cathode microorganism desalting battery and sewage treatment method |
| CN109650558A (en) * | 2019-02-15 | 2019-04-19 | 哈尔滨工业大学 | The equipment and its application method of electrodialysis reversal system in-situ reducing carbon dioxide based on bioelectrochemistry |
-
2019
- 2019-08-01 CN CN201910708840.6A patent/CN110316913B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009077992A3 (en) * | 2007-12-17 | 2009-08-13 | Univ Ben Gurion | Apparatus and system for deionization |
| CN101481178A (en) * | 2009-02-10 | 2009-07-15 | 清华大学 | Sewage treatment process and apparatus for synchronous electrogenesis desalinisation |
| CN105236658A (en) * | 2015-11-06 | 2016-01-13 | 北京津工海水科技有限公司 | Method and system for preparing salt from seawater |
| CN205151970U (en) * | 2015-11-06 | 2016-04-13 | 北京津工海水科技有限公司 | Processing system and industrial wastewater processing system of strong brine that reverse osmosis unit discharged |
| CN105600929A (en) * | 2015-12-30 | 2016-05-25 | 哈尔滨工业大学 | Continuous flow biological electrogenesis desalting device for processing refining wastewater containing acetonitrile and application method |
| CN106698679A (en) * | 2017-01-20 | 2017-05-24 | 清华大学 | Filtering type cathode microorganism desalting battery and sewage treatment method |
| CN109650558A (en) * | 2019-02-15 | 2019-04-19 | 哈尔滨工业大学 | The equipment and its application method of electrodialysis reversal system in-situ reducing carbon dioxide based on bioelectrochemistry |
Non-Patent Citations (1)
| Title |
|---|
| 反向电渗析在新能源及环境保护应用中的研究进展;陈霞等;《化工学报》;20181231;第69卷(第1期);第188-202页 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240101453A1 (en) * | 2021-09-23 | 2024-03-28 | San Diego State University (SDSU) Foundation, dba San Diego State University Research Foundation | Bioelectrochemical system for water deionization and desalination, wastewater treatment and energy recovery |
| US11855324B1 (en) | 2022-11-15 | 2023-12-26 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell with heat pump |
| US12040517B2 (en) | 2022-11-15 | 2024-07-16 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell and methods of use thereof |
| US12341228B2 (en) | 2022-11-15 | 2025-06-24 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell and methods of use thereof |
| US12374711B2 (en) | 2023-11-15 | 2025-07-29 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell with heat pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110316913A (en) | 2019-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110316913B (en) | Combined desalination wastewater treatment system for synchronously recovering salt difference energy and chemical energy in sewage | |
| Zhang et al. | Improving water desalination by hydraulically coupling an osmotic microbial fuel cell with a microbial desalination cell | |
| Chen et al. | Selectrodialysis with bipolar membrane for the reclamation of concentrated brine from RO plant | |
| Sophia et al. | Microbial desalination cell technology: contribution to sustainable waste water treatment process, current status and future applications | |
| Saeed et al. | Microbial desalination cell technology: a review and a case study | |
| Li et al. | Simultaneous desalination and nutrient recovery during municipal wastewater treatment using microbial electrolysis desalination cell | |
| Scialdone et al. | Cathodic reduction of hexavalent chromium coupled with electricity generation achieved by reverse-electrodialysis processes using salinity gradients | |
| CN102976559B (en) | Anaerobic ammonia oxidation microbe reverse electroosmosis sewage treatment and power generation method and device | |
| Jwa et al. | Energy-efficient seawater softening and power generation using a microbial electrolysis cell-reverse electrodialysis hybrid system | |
| Zuo et al. | Enhanced organics removal and partial desalination of high strength industrial wastewater with a multi-stage microbial desalination cell | |
| Qin et al. | Understanding electricity generation in osmotic microbial fuel cells through integrated experimental investigation and mathematical modeling | |
| CN214400132U (en) | System of clean energy sea water desalination coupling salt difference energy power generation facility | |
| CN102066268A (en) | Method, apparatus and plant for desalinating saltwater using concentration difference energy | |
| CN204727706U (en) | A kind of film electrical coupling system of Sewage advanced treatment | |
| CN102503059B (en) | Method for removing heavy metal from sludge and device thereof | |
| CN109704452B (en) | Water treatment device and method for coupling bioelectrochemical and forward osmosis membrane bioreactor | |
| Zhao et al. | Ammonia removal and recovery from diluted forward osmosis draw solution by using a tubular microbial desalination cell | |
| CN108862548A (en) | A kind of microorganism electrolytic desalting pond reactor assembly | |
| CN112723640A (en) | System and method for clean energy sea water desalination coupling salt difference energy power generation device | |
| CN112159902A (en) | A co-production system for lithium extraction with electric water based on capacitive method | |
| Shehab et al. | Microbial electrodeionization cell stack for sustainable desalination, wastewater treatment and energy recovery | |
| Pradhan et al. | Organic matter and dissolved salts removal in a microbial desalination cell with different orientation of ion exchange membranes | |
| Pradhan et al. | Multi-chamber microbial desalination cell for improved organic matter and dissolved solids removal from wastewater | |
| CN106587501A (en) | Treatment method for garbage leachate | |
| CN115332594A (en) | A desalination flow battery system with high desalination flux based on redox-targeted reaction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |