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CN106242145A - A kind of desulfurization wastewater reverse osmosis reconcentration device - Google Patents

A kind of desulfurization wastewater reverse osmosis reconcentration device Download PDF

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Publication number
CN106242145A
CN106242145A CN201610731649.XA CN201610731649A CN106242145A CN 106242145 A CN106242145 A CN 106242145A CN 201610731649 A CN201610731649 A CN 201610731649A CN 106242145 A CN106242145 A CN 106242145A
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entrance
reverse osmosis
outlet
oxidation pond
osmosis unit
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CN201610731649.XA
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Chinese (zh)
Inventor
刘永锋
巫立斌
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
    • C02F1/4693Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/76Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/101Sulfur compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/10Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/04Flow arrangements
    • C02F2301/046Recirculation with an external loop
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/14Maintenance of water treatment installations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/22Eliminating or preventing deposits, scale removal, scale prevention

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

The present invention relates to a kind of technique for treating industrial wastewater and device, it is specifically related to a kind of desulfurization wastewater reverse osmosis reconcentration device, the entrance of sedimentation tank is connected with the entrance of the outlet of oxidation pond and more medium filter, the outlet of more medium filter is connected with the entrance of electrodialysis plant, the dense water out of electrodialysis plant is connected with the entrance of oxidation pond, the water outlet of electrodialysis plant is connected with the entrance of reverse osmosis unit, the water outlet of reverse osmosis unit is connected with the entrance of sedimentation tank and the entrance of oxidation pond respectively, the dense water out of reverse osmosis unit is connected with the entrance of evaporated crystallization device, the outlet of the first dosing tank is connected with the entrance of oxidation pond, the outlet of the second dosing tank is connected with the entrance of sedimentation tank.The present invention can effectively remove the salinity in heat-engine plant desulfurized waste water and other compositions, but also can reclaim these compositions with useful form.

Description

A kind of desulfurization wastewater reverse osmosis reconcentration device
Technical field
The present invention relates to a kind of technique for treating industrial wastewater and device, be specifically related to a kind of desulfurization wastewater reverse osmosis reconcentration Device.
Background technology
At present, the desulfuration waste water treatment process that domestic and international thermal power plant is common is predominantly: hydraulic(-ash) sluicing, be separately provided at chemistry The methods such as reason system (predominantly three headers process), evaporation.Wherein evaporation process is to make desulfurization give up by evaporation and crystallization apparatus Water is separated into steam and the solid waste of high-quality, in order to realize full factory waste water zero discharge.Use at evaporative crystallisation process Reason desulfurization wastewater has the drawback that: investing the highest, because whole desulfurization wastewaters are all evaporated, operating cost is the highest.Therefore, need Desulfurization wastewater is carried out decrement treatment, reduces the processing cost of evaporation and crystallization system.
Technique for desulfurization wastewater decrement treatment mainly includes reverse osmosis and nanofiltration etc..Due to desulfurization wastewater salinity Higher, and rich in Organic substance and fouling tendency material, use reverse osmosis to carry out concentrating decrement, pretreating process requires strict, and It is on the low side that the system response rate controls, and typically about 50%, and the salinity of strong brine increases to about 70000ppm, disposes such Saline, for desalination industry, will face huge cost and challenge, causes longer startup time and higher water Cost.Using nanofiltration to carry out desulfurization wastewater decrement treatment, nanofiltration is bigger than normal to the clearance of monovalent ion, produces water and cannot directly return With, needing that the further desalination of water is produced in nanofiltration and can be only achieved reuse requirement, technological process is the longest, and processing cost is higher.Therefore, need Explore suitable desulfurization wastewater deweighting treating technology.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides be applicable to heat-engine plant desulfurized waste water process a kind of desulfurization give up Water reverse osmosis reconcentration device, thus effectively remove the salinity in heat-engine plant desulfurized waste water and other compositions, but also can have These compositions are reclaimed by form.
In order to achieve the above object, the technical solution adopted in the present invention is, a kind of desulfurization wastewater reverse osmosis reconcentration dress Put, including oxidation pond, sedimentation tank, more medium filter, electrodialysis plant, reverse osmosis unit, regulating reservoir, evaporated crystallization device, First dosing tank and the second dosing tank;
The entrance of described sedimentation tank is connected with the entrance of the outlet of oxidation pond and more medium filter, described more medium filter Outlet be connected with the entrance of electrodialysis plant, the dense water out of described electrodialysis plant is connected with the entrance of oxidation pond, The water outlet of described electrodialysis plant is connected with the entrance of reverse osmosis unit, and the water outlet of described reverse osmosis unit is respectively It is connected with the entrance of sedimentation tank and the entrance of oxidation pond, the dense water out of reverse osmosis unit and the entrance phase of evaporated crystallization device Connection, the described outlet of the first dosing tank is connected with the entrance of oxidation pond, the outlet of described second dosing tank and sedimentation tank Entrance is connected.
Further, also including regulating reservoir, the dense water out of described reverse osmosis unit is also connected with regulating reservoir, described regulation Pond is back to the water inlet of reverse osmosis unit.
Further, the first described dosing tank is built with sodium hypochlorite.
Further, the second described dosing tank is built with sodium hydroxide.
The present invention, by using technique scheme, compared with prior art, has the advantage that
The present invention is by one brand-new desulfurization wastewater reverse osmosis reconcentration device of design, by one brand-new reverse osmosis of design Reconcentration device, the oxidation pond in the pretreatment unit having plays protective action, prevents the inferior sulfate radical in desulfurization wastewater not Oxidation is completely.A large amount of calcium ions and magnesium ions are removed by sedimentation tank with precipitation form, alleviate follow-up individual event ion and hand over while reducing SS Change EDBM device workload and reduce the probability of electrodialyzer fouling.Electrodialysis cycles of concentration is high, alleviates subsequent evaporation The load of crystallization, reduces investment and operating cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiments of the invention.
Detailed description of the invention
In conjunction with the drawings and specific embodiments, the present invention is further described.
As a specific embodiment, as it is shown in figure 1, a kind of desulfurization wastewater reverse osmosis reconcentration device, including oxidation Pond 1, sedimentation tank 2, more medium filter 3, electrodialysis plant 4, reverse osmosis unit 7, regulating reservoir 8, evaporated crystallization device 9, first Dosing tank 5 and the second dosing tank 6;
The entrance of described sedimentation tank 2 is connected with the entrance of the outlet of oxidation pond 1 and more medium filter 3, described multimedium mistake The outlet of filter 3 is connected with the entrance of electrodialysis plant 4, the dense water out of described electrodialysis plant 4 and the entrance of oxidation pond 1 Being connected, the water outlet of described electrodialysis plant 4 is connected with the entrance of reverse osmosis unit 7, described reverse osmosis unit 7 light Water out is connected with the entrance of sedimentation tank 2 and the entrance of oxidation pond 1 respectively, the dense water out of reverse osmosis unit 7 and evaporation knot The entrance of brilliant device 9 is connected, and the described outlet of the first dosing tank 5 is connected with the entrance of oxidation pond 1, described second dosing tank The outlet of 6 is connected with the entrance of sedimentation tank 2.
Further, also including regulating reservoir 8, the dense water out of described reverse osmosis unit 7 is also connected with regulating reservoir 8, described Regulating reservoir 8 is back to the water inlet of reverse osmosis unit 7.
Further, the first described dosing tank 5 is built with sodium hypochlorite.
Further, the second described dosing tank 6 is built with sodium hydroxide.
Desulfurization wastewater situation produced by certain thermal power plant employing Limestone-gypsum Wet Flue Gas Desulfurization Process: treating capacity 9t/d, sulfate radical 12000mg/L, inferior sulfate radical 6500mg/L, calcium ion content 1300mg/L, magnesium ion content 2500mg/L, chloride ion content 24000mg/L, sodium ions content 23000mg/L, pH are 5.9.
Desulfurization wastewater is through peroxidating and precipitation process: desulfurization is given up by the sodium hypochlorite adding 65mmol/L in oxidation pond 1 Sulfite oxidation in water becomes sulfate, the waste water after oxidation completely to enter sedimentation tank 2;Add in sedimentation tank 2 again Calcium ions and magnesium ions is precipitated by the sodium hydroxide of 162mmol/L, isolated supernatant.
Clear liquid carries out multi-medium filtering successively, and particulate matter is filtered out and obtains SS passing through less than 5 by more medium filter 3 Liquid, entering back into electrodialysis plant 4 and being adjusted deep or light water flow velocity is 4cm/s, and pole water flow velocity is 6cm/s, and voltage is by tune film 0.5V, is circulated concentration.Circulation 90min after obtain about 15% the dense water of electrodialysis, the electrodialysis fresh water of about 3%, pH value It is the negative electrode pole water of 9.5 and anode pole water that pH value is 2.3.Anode pole water is recycled to oxidation pond 1, and negative electrode pole water is recycled to precipitation Pond 2, the dense water of electrodialysis enters vaporizer and is evaporated crystallization, and it is light that electrodialyzer fresh water entrance reverse osmosis unit 7 obtains reverse osmosis Water and reverse osmosis concentrated water, reverse osmosis freshwater is back to oxidation pond 1 and sedimentation tank 2 respectively, and reverse osmosis concentrated water enters evaporative crystallization dress Put and be evaporated crystallization.
Although specifically showing and describe the present invention in conjunction with preferred embodiment, but those skilled in the art should be bright In vain, in the spirit and scope of the present invention limited without departing from appended claims, in the form and details can be right The present invention makes a variety of changes, and is protection scope of the present invention.

Claims (4)

1. a desulfurization wastewater reverse osmosis reconcentration device, it is characterised in that: include oxidation pond, sedimentation tank, more medium filter, Electrodialysis plant, reverse osmosis unit, regulating reservoir, evaporated crystallization device, the first dosing tank and the second dosing tank;
The entrance of described sedimentation tank is connected with the entrance of the outlet of oxidation pond and more medium filter, described more medium filter Outlet be connected with the entrance of electrodialysis plant, the dense water out of described electrodialysis plant is connected with the entrance of oxidation pond, The water outlet of described electrodialysis plant is connected with the entrance of reverse osmosis unit, and the water outlet of described reverse osmosis unit is respectively It is connected with the entrance of sedimentation tank and the entrance of oxidation pond, the dense water out of reverse osmosis unit and the entrance phase of evaporated crystallization device Connection, the described outlet of the first dosing tank is connected with the entrance of oxidation pond, the outlet of described second dosing tank and sedimentation tank Entrance is connected.
A kind of desulfurization wastewater reverse osmosis reconcentration device the most according to claim 1, it is characterised in that: also include regulation Pond, the dense water out of described reverse osmosis unit is also connected with regulating reservoir, and described regulating reservoir is back to the water inlet of reverse osmosis unit.
A kind of desulfurization wastewater reverse osmosis reconcentration device the most according to claim 1, it is characterised in that: described first adds Medicine-chest is built with sodium hypochlorite.
A kind of desulfurization wastewater reverse osmosis reconcentration device the most according to claim 1, it is characterised in that: described second adds Medicine-chest is built with sodium hydroxide.
CN201610731649.XA 2016-08-26 2016-08-26 A kind of desulfurization wastewater reverse osmosis reconcentration device Withdrawn CN106242145A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106865865A (en) * 2017-04-12 2017-06-20 上海龙净环保科技工程有限公司 Membrane separation process concentrates the processing unit and method of brackish water
CN107473486A (en) * 2017-09-26 2017-12-15 江苏中圣高科技产业有限公司 A kind of combination treatment method of desulfurization wastewater
CN108383295A (en) * 2018-05-11 2018-08-10 上海晶宇环境工程股份有限公司 The separating technology and its special equipment of organic matter and salt in strong brine
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
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

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CA2244109A1 (en) * 1996-02-05 1997-08-14 Veikko Jolkin Method to treat whey
CN201424394Y (en) * 2009-06-17 2010-03-17 浙江玉泉环境工程有限公司 Reverse osmosis water quality automatic control system
CN201785261U (en) * 2009-12-31 2011-04-06 上海轻工业研究所有限公司 Treatment and recovery device for aluminum oxidation rinsing wastewater
CN103288236A (en) * 2013-05-27 2013-09-11 山东三维石化工程股份有限公司青岛分公司 Treatment method for salt-containing wastewater
CN105859006A (en) * 2016-05-23 2016-08-17 海博伦(苏州)环境科技股份有限公司 Desulfurization waste water reuse and zero discharge system and technology

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2244109A1 (en) * 1996-02-05 1997-08-14 Veikko Jolkin Method to treat whey
CN201424394Y (en) * 2009-06-17 2010-03-17 浙江玉泉环境工程有限公司 Reverse osmosis water quality automatic control system
CN201785261U (en) * 2009-12-31 2011-04-06 上海轻工业研究所有限公司 Treatment and recovery device for aluminum oxidation rinsing wastewater
CN103288236A (en) * 2013-05-27 2013-09-11 山东三维石化工程股份有限公司青岛分公司 Treatment method for salt-containing wastewater
CN105859006A (en) * 2016-05-23 2016-08-17 海博伦(苏州)环境科技股份有限公司 Desulfurization waste water reuse and zero discharge system and technology

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106865865A (en) * 2017-04-12 2017-06-20 上海龙净环保科技工程有限公司 Membrane separation process concentrates the processing unit and method of brackish water
CN107473486A (en) * 2017-09-26 2017-12-15 江苏中圣高科技产业有限公司 A kind of combination treatment method of desulfurization wastewater
CN107473486B (en) * 2017-09-26 2020-12-29 江苏中圣高科技产业有限公司 Combined treatment method of desulfurization wastewater
CN108383295A (en) * 2018-05-11 2018-08-10 上海晶宇环境工程股份有限公司 The separating technology and its special equipment of organic matter and salt in strong brine
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
US11563229B1 (en) 2022-05-09 2023-01-24 Rahul S Nana Reverse electrodialysis cell with heat pump
US11611099B1 (en) 2022-05-09 2023-03-21 Rahul S Nana Reverse electrodialysis cell and methods of use thereof
US11699803B1 (en) 2022-05-09 2023-07-11 Rahul S Nana Reverse electrodialysis cell with heat pump
US12107308B2 (en) 2022-05-09 2024-10-01 Rahul S Nana Reverse electrodialysis cell and methods of use thereof
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

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Application publication date: 20161221