CN114524568A - Zero-emission sewage treatment process in nano powder industry - Google Patents
Zero-emission sewage treatment process in nano powder industry Download PDFInfo
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- CN114524568A CN114524568A CN202210203934.XA CN202210203934A CN114524568A CN 114524568 A CN114524568 A CN 114524568A CN 202210203934 A CN202210203934 A CN 202210203934A CN 114524568 A CN114524568 A CN 114524568A
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- 239000010865 sewage Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000011858 nanopowder Substances 0.000 title claims abstract description 19
- 238000011282 treatment Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 162
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 49
- 238000005189 flocculation Methods 0.000 claims abstract description 36
- 230000016615 flocculation Effects 0.000 claims abstract description 36
- 238000001914 filtration Methods 0.000 claims abstract description 25
- 239000012528 membrane Substances 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 239000008213 purified water Substances 0.000 claims abstract description 17
- 239000002910 solid waste Substances 0.000 claims abstract description 16
- 238000004062 sedimentation Methods 0.000 claims abstract description 13
- 239000010802 sludge Substances 0.000 claims abstract description 13
- 239000013505 freshwater Substances 0.000 claims abstract 2
- 230000009182 swimming Effects 0.000 claims description 12
- 238000001962 electrophoresis Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 238000011001 backwashing Methods 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 239000008394 flocculating agent Substances 0.000 claims description 3
- 238000005374 membrane filtration Methods 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 238000011045 prefiltration Methods 0.000 claims 1
- 238000011221 initial treatment Methods 0.000 abstract description 3
- 238000001223 reverse osmosis Methods 0.000 abstract 3
- 239000013535 sea water Substances 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 229920002401 polyacrylamide Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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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)
Abstract
The invention discloses a zero-emission sewage treatment process in the nano powder industry, which comprises a flocculation tank, a sedimentation tank, an electrophoretic pool, a disc filter, a positive pressure ultrafiltration filter, a resin filter tank, an RO (reverse osmosis) membrane filter tank, a sea-fresh membrane filter and an evaporator, wherein the flocculation tank is arranged in the sedimentation tank; the flocculation tank flocculates and settles the nano-powder in the sewage; then, the sludge passes through a sedimentation tank to obtain precipitated sludge and first-grade clear water; the first-stage clear water enters an electrophoretic pool to remove most of ultrafine powder, and then is filtered by a disc filter and a positive pressure ultrafiltration filter to obtain ultrafiltration water and ultrafiltration concentrated water; the ultrafiltration clear water passes through a resin filter tank to obtain softened water; passing the softened water through an RO membrane filter tank and a sea and fresh water membrane filter to obtain purified water and concentrated water, and passing the concentrated water through an evaporator to obtain ultra-purified water; the invention relates to a zero-emission sewage treatment process in the nano powder industry, which realizes primary treatment through flocculation and sedimentation, and obtains completely separated solid waste and pure water through multi-stage filtration and concentration, thereby realizing zero emission of sewage.
Description
Technical Field
The invention belongs to the field of sewage treatment, and particularly relates to a zero-emission sewage treatment process in the nano powder industry.
Background
The nanometer powder is ultrafine powder, which is generated in the preparation of ultrafine powder or in some other industries, the particle size and the morphology of the ultrafine powder are difficult to control, and the ultrafine powder is easy to disperse in air or water, thus causing environmental pollution. The prior art is not mature enough for the sewage treatment technology with superfine powder, and the treated sewage contains more or less superfine powder, which causes secondary pollution to water body and the like.
Disclosure of Invention
The invention aims to provide a zero-emission sewage treatment process in the nano powder industry, which realizes primary treatment through flocculation and sedimentation, and obtains completely separated solid waste and pure water through multi-stage filtration and concentration so as to realize zero emission of sewage.
The invention relates to a zero-emission sewage treatment process in the nano powder industry, which comprises a primary flocculation tank, a secondary flocculation tank, a sedimentation tank, an electrophoresis tank, a disc filter, a positive pressure ultrafiltration filter, a resin filter tank, an RO membrane filter tank, a sea-fresh membrane filter and an evaporator which are sequentially arranged; PAC and PAM flocculating agents are respectively added into the primary flocculation tank and the secondary flocculation tank to flocculate and settle the nano powder in the sewage; then standing and precipitating the sludge in a sedimentation tank to obtain precipitated sludge and first-grade clear water; the first-stage clear water enters a disc type filter for filtering to obtain ultrafiltration source water; filtering the ultrafiltration source water through a positive pressure ultrafiltration filter to obtain ultrafiltration filtered water and ultrafiltration concentrated water; passing the ultra-filtered clear water through a resin filter tank to obtain softened water; passing the softened water through an RO membrane filtration tank to obtain pure water and softened concentrated water; and (3) passing the softened concentrated water through a sea-fresh membrane filter to obtain purified water and concentrated water, and passing the concentrated water through an evaporator to further obtain ultra-purified water and solid waste.
Preferably, a water collecting tank is arranged in front of the primary flocculation tank, a grid and a front filter screen are arranged on a water inlet of the water collecting tank, and stirrers are arranged in the primary flocculation tank and the secondary flocculation tank.
Preferably, the precipitated sludge enters a plate frame to be extruded to obtain plate frame clear liquid and mud cake solid waste, and the plate frame clear liquid is refluxed into a water collecting tank.
Preferably, the sedimentation tank rear portion still is provided with the clear water tank, collect the one-level clear water, then pump the one-level clear water into the swimming pool, the swimming pool is including the positive pole swimming pool and the negative pole swimming pool that set gradually, utilize the electrophoresis to further get rid of most in the one-level clear water by the powder that the flocculation of flocculation subsides, obtain the second grade clear water, then get into disc filter with the second grade clear water according to 30 t/hour flow, set up ultrafiltration source water pitcher behind disc filter for the ultrafiltration source water that the disc filter produced keeps in, then get into malleation ultrafiltration filter with ultrafiltration source water according to 40 t/hour flow and filter, obtain the ultrafiltration clear water and get into the clear water pitcher that sets up at malleation ultrafiltration filter rear portion, the concentrated water of ultrafiltration that obtains gets into the clear water tank, get into disc filter once more.
Preferably, a booster pump is arranged in front of the resin filter tank, an inlet of the booster pump is communicated with an outlet of the ultrafiltration clear water tank, a softened water storage tank is arranged behind the resin filter tank, and an RO high-pressure pump is arranged behind the softened water storage tank, so that softened water enters the RO membrane filter tank at a flow rate of 40 t/h to obtain pure water and softened concentrated water, wherein the ratio of the pure water to the softened concentrated water is 4: 1.
Preferably, the softened concentrated water enters a sea desalination membrane filter according to the flow rate of 8 t/h to obtain purified water and concentrated water, the ratio of the purified water to the concentrated water is 3:1, wherein the concentrated water enters an evaporator according to the flow rate of 2 t/h, and ultra-purified water and solid waste are obtained through evaporation.
Preferably, the resin filtering tank is connected with a back washing device, and a water outlet of the back washing device is communicated with the evaporator.
The technical scheme of the invention has the beneficial effects that the zero-emission sewage treatment process in the nano powder industry has the following steps: the primary treatment is realized through flocculation and sedimentation, and then the solid waste and the pure water which are completely separated are obtained through multi-stage filtration and concentration, so that the zero discharge of the sewage is realized.
Drawings
FIG. 1 is a flow chart of a zero-discharge sewage treatment process in the nano powder industry according to the technical scheme of the invention.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the drawings attached to the specification.
The invention relates to a zero-emission sewage treatment process in the nano powder industry, which comprises a primary flocculation tank, a secondary flocculation tank, a sedimentation tank, an electrophoresis tank, a disc filter, a positive pressure ultrafiltration filter, a resin filter tank, an RO membrane filter tank, a sea-fresh membrane filter and an evaporator which are sequentially arranged. PAC and PAM flocculating agents are respectively added into the primary flocculation tank and the secondary flocculation tank to flocculate and settle the nano powder in the sewage; then the sludge is settled in a settling tank to obtain settled sludge and first-grade clear water. The first-stage clear water enters a disc type filter for filtering to obtain ultrafiltration source water; filtering the ultrafiltration source water through a positive pressure ultrafiltration filter to obtain ultrafiltration filtered water and ultrafiltration concentrated water; passing the ultra-filtered clear water through a resin filter tank to obtain softened water; passing the softened water through an RO membrane filtration tank to obtain pure water and softened concentrated water; and (3) passing the softened concentrated water through a sea-fresh membrane filter to obtain purified water and concentrated water, and passing the concentrated water through an evaporator to further obtain ultra-purified water and solid waste.
Based on above-mentioned technical scheme, the waste water that has the superfine powder that will produce in the waste water that produces or other technologies of preparation superfine powder all discharges to the catch basin, collects, gets rid of large granule solid waste wherein at first through primary filter etc. then carries out the flocculation with the waste water that contains the superfine powder through one-level flocculation basin and second grade flocculation basin for superfine powder can be held together, and the granule increases, and the increase of flocculation weight does benefit to and subsides and filters. Then with one-level clear water through the electrophoresis cell, according to the electrophoresis principle, further realize carrying out directional absorption to the powder that the aquatic is not precipitated by the flocculation, get rid of the most dispersed miropowder in one-level clear water, improve the powder and get rid of efficiency, reduce the pressure of follow-up each filter, ensure the work efficiency and the life of each filter. And then, the wastewater is subjected to multistage filtration, concentration and the like step by step to obtain pure water and solid waste, the solid waste can be further added as a raw material of other procedures or processes, the pure water can be further directly used as industrial water, the superfine powder is separated from the wastewater, and the zero-discharge rice of sewage is realized.
The water collecting tank is arranged in front of the primary flocculation tank, and a grid and a front filter screen are arranged on a water inlet of the water collecting tank, so that large particles or large-volume solids are filtered and removed. All be provided with the agitator in one-level flocculation pond and the second grade flocculation pond, ensure that the superfine powder in polyaluminium chloride and polyacrylamide and the waste water carries out abundant contact for with improve the flocculation effect.
The precipitated sludge enters the plate frame to be extruded, plate frame clear liquid and sludge cake solid waste are obtained, the plate frame clear liquid flows back to the water collecting tank, large-particle solid waste is directly removed, the filtering pressure of a subsequent filter is reduced, and the service life of the subsequent filter is prolonged.
The sedimentation tank rear portion still is provided with the clear water tank, collect the one-level clear water, then pump the one-level clear water into the swimming pool, the swimming pool is including the positive pole swimming pool and the negative pole swimming pool that set gradually, utilize the electrophoresis to further get rid of most in the one-level clear water by the powder that the flocculation sediment, obtain the second grade clear water, then get into disc filter with the second grade clear water according to 30 t/hour flow, set up ultrafiltration source water pitcher behind disc filter, be used for keeping in the ultrafiltration source water that disc filter produced, then get into malleation ultrafiltration filter with ultrafiltration source water according to 40 t/hour flow and filter, it gets into the ultrafiltration clear water pitcher that sets up at malleation ultrafiltration filter rear portion to obtain the ultrafiltration concentrated water and gets into the clear water tank, get into disc filter once more. The disc filter adopts 1um aperture, and the filter effect is good, has also kept heightened filter effect simultaneously. And a positive pressure ultrafiltration filter is adopted, so that the filtering effect and the filtering efficiency are ensured, and the sewage treatment efficiency is accelerated.
The device comprises a resin filtering tank, a booster pump, an RO high-pressure pump, an RO membrane filtering tank and a softened concentrated water tank, wherein the booster pump is arranged in front of the resin filtering tank, an inlet of the booster pump is communicated with an outlet of the ultrafiltration clear water tank, the softened water storage tank is arranged behind the resin filtering tank, and the RO high-pressure pump is arranged behind the softened water storage tank, so that the softened water enters the RO membrane filtering tank according to the flow of 40 t/h to obtain pure water and softened concentrated water, and the ratio of the pure water to the softened concentrated water is 4: 1. And further filtering the finer powder in the water body through a resin filtering tank and an RO membrane filtering tank respectively to obtain the directly used pure water.
And the softened concentrated water enters a sea-fresh membrane filter according to the flow of 8 t/h to obtain purified water and concentrated water, wherein the ratio of the purified water to the concentrated water is 3:1, the concentrated water enters an evaporator according to the flow of 2 t/h, and ultra-purified water and solid waste are obtained through evaporation. By evaporation, more advanced fine powder is separated, and solid-liquid separation is realized.
The resin filtering tank is connected with a back washing device, and the water outlet of the back washing device is communicated with the evaporator. The wastewater generated in the working procedure is synchronously treated, and the zero discharge of the wastewater is realized.
Technical solution of the invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive method concept and technical solution, or to apply the inventive concept and technical solution to other occasions without modification.
Claims (7)
1. A zero-discharge sewage treatment process in the nano powder industry is characterized by comprising a primary flocculation tank, a secondary flocculation tank, a sedimentation tank, an electrophoresis tank, a disc filter, a positive pressure ultrafiltration filter, a resin filter tank, an RO membrane filter tank, a sea-fresh membrane filter and an evaporator which are sequentially arranged; PAC and PAM flocculating agents are respectively added into the primary flocculation tank and the secondary flocculation tank to flocculate and settle the nano powder in the sewage; then standing and precipitating the sludge in a sedimentation tank to obtain precipitated sludge and first-grade clear water; the first-stage clear water enters a disc type filter for filtering to obtain ultrafiltration source water; filtering the ultrafiltration source water through a positive pressure ultrafiltration filter to obtain ultrafiltration filtered water and ultrafiltration concentrated water; passing the ultra-filtered clear water through a resin filter tank to obtain softened water; passing the softened water through an RO membrane filtration tank to obtain pure water and softened concentrated water; and (3) passing the softened concentrated water through a sea-fresh membrane filter to obtain purified water and concentrated water, and passing the concentrated water through an evaporator to further obtain ultra-purified water and solid waste.
2. The process of claim 1, wherein a water collecting tank is arranged in front of the primary flocculation tank, a grid and a pre-filter screen are arranged at a water inlet of the water collecting tank, and stirrers are arranged in the primary flocculation tank and the secondary flocculation tank.
3. The nano powder industry zero-emission sewage treatment process as claimed in claim 1, wherein the precipitated sludge enters a plate frame to be extruded to obtain plate frame clear liquid and sludge cake solid waste, and the plate frame clear liquid is refluxed into a water collection tank.
4. The process of claim 1, wherein a clear water tank is further disposed at the rear of the settling tank to collect the first-stage clear water, the first-stage clear water is pumped into the swimming pool, the swimming pool comprises an anode swimming pool and a cathode swimming pool, most of the powder which is not flocculated and precipitated in the first-stage clear water is further removed by electrophoresis to obtain second-stage clear water, the second-stage clear water enters the disc filter at a flow rate of 30 t/hr, an ultrafiltration source water tank is disposed behind the disc filter for temporarily storing ultrafiltration source water generated by the disc filter, the ultrafiltration source water enters the positive pressure ultrafiltration filter at a flow rate of 40 t/hr for filtration, the obtained ultrafiltration clear water enters the ultrafiltration clear water tank disposed at the rear of the positive pressure ultrafiltration filter, and the obtained ultrafiltration concentrated water enters the clear water tank, and enters the disc filter again.
5. The nano-powder industry zero-emission sewage treatment process as claimed in claim 1, wherein a booster pump is arranged in front of the resin filter tank, an inlet of the booster pump is communicated with an outlet of the ultrafiltration clear water tank, a softened water storage tank is arranged behind the resin filter tank, and an RO high-pressure pump is arranged behind the softened water storage tank, so that softened water enters the RO membrane filter tank at a flow rate of 40 t/h to obtain pure water and softened concentrated water, wherein the ratio of the pure water to the softened concentrated water is 4: 1.
6. The nano powder industry zero-emission sewage treatment process as claimed in claim 1, wherein the softened concentrated water enters a sea-freshwater membrane filter at a flow rate of 8 t/h to obtain purified water and concentrated water, the ratio of the purified water to the concentrated water is 3:1, wherein the concentrated water enters an evaporator at a flow rate of 2 t/h, and ultra-purified water and solid waste are obtained through evaporation.
7. The nano-powder industry zero-emission sewage treatment process as claimed in claim 1, wherein the resin filtration tank is connected with a backwashing device, and a water outlet of the backwashing device is communicated with the evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210203934.XA CN114524568A (en) | 2022-03-02 | 2022-03-02 | Zero-emission sewage treatment process in nano powder industry |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210203934.XA CN114524568A (en) | 2022-03-02 | 2022-03-02 | Zero-emission sewage treatment process in nano powder industry |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS634893A (en) * | 1986-06-25 | 1988-01-09 | Daicel Chem Ind Ltd | Fine particle removing device from ultrapure water |
| CN101156996A (en) * | 2007-08-03 | 2008-04-09 | 中国铝业股份有限公司 | A method for the sedimentation of bauxite cradling tailings |
| CN102101710A (en) * | 2010-12-09 | 2011-06-22 | 安徽理工大学 | Method for precipitating and clarifying coal slime water assisted by extra electric field |
| JP2014128777A (en) * | 2012-12-28 | 2014-07-10 | Yamada Katsuhiko | Apparatus and method for flocculating, separating and recovering particle |
| CN205773883U (en) * | 2016-07-21 | 2016-12-07 | 何吾斌 | A kind of oil field compression fracture returns sewer processing means |
| CN111875142A (en) * | 2020-07-27 | 2020-11-03 | 煤炭工业太原设计研究院集团有限公司 | A zero-discharge system and process for salty wastewater in a power plant |
-
2022
- 2022-03-02 CN CN202210203934.XA patent/CN114524568A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS634893A (en) * | 1986-06-25 | 1988-01-09 | Daicel Chem Ind Ltd | Fine particle removing device from ultrapure water |
| CN101156996A (en) * | 2007-08-03 | 2008-04-09 | 中国铝业股份有限公司 | A method for the sedimentation of bauxite cradling tailings |
| CN102101710A (en) * | 2010-12-09 | 2011-06-22 | 安徽理工大学 | Method for precipitating and clarifying coal slime water assisted by extra electric field |
| JP2014128777A (en) * | 2012-12-28 | 2014-07-10 | Yamada Katsuhiko | Apparatus and method for flocculating, separating and recovering particle |
| CN205773883U (en) * | 2016-07-21 | 2016-12-07 | 何吾斌 | A kind of oil field compression fracture returns sewer processing means |
| CN111875142A (en) * | 2020-07-27 | 2020-11-03 | 煤炭工业太原设计研究院集团有限公司 | A zero-discharge system and process for salty wastewater in a power plant |
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