CN106186487A - A kind of Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method - Google Patents

A kind of Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method Download PDF

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Publication number
CN106186487A
CN106186487A CN201610630050.7A CN201610630050A CN106186487A CN 106186487 A CN106186487 A CN 106186487A CN 201610630050 A CN201610630050 A CN 201610630050A CN 106186487 A CN106186487 A CN 106186487A
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China
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nanofiltration
chemical industry
water
coal chemical
containing wastewater
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CN201610630050.7A
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Inventor
王亮
李强
黄开东
汪炎
邢明皓
尹程达
刘华杰
蒋佩娟
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Magnificent Environment Public Works In East Anhui LLC
East China Engineering Science and Technology Co Ltd
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Magnificent Environment Public Works In East Anhui LLC
East China Engineering Science and Technology Co Ltd
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Priority to CN201610630050.7A priority Critical patent/CN106186487A/en
Publication of CN106186487A publication Critical patent/CN106186487A/en
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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
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/04—Chlorides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
    • 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
    • C02F1/22—Treatment of water, waste water, or sewage by freezing
    • 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
    • C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • 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
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone

Abstract

The invention discloses a kind of Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method.Coal Chemical Industry high slat-containing wastewater enters electrolytic oxidation apparatus, remove part extremely difficult degraded COD, and by larger molecular organics open loop, chain rupture, electrolytic oxidation apparatus water outlet enters device for catalyzing and oxidating ozone, further organics removal, and device for catalyzing and oxidating ozone water outlet enters Buffer Pool, make the ozone decomposed of residual, in Buffer Pool, waste water entrance nanofiltration device separates, and nanofiltration is produced water side and is mainly composed of NaCl, and nanofiltration dense water side is mainly composed of NaCl and Na2SO4, nanofiltration product water concentrates reuse further by reverse osmosis, and technical grade NaCl is reclaimed in the crystallization of dense hydromining full-boiled process, the dense hydromining of nanofiltration " full-boiled process crystallization+freezing and crystallizing " recovery technical grade Na2SO4.The present invention is easy to resource reclaim, and treatment effect is reliable and stable, and build, run, maintenance cost moderate.

Description

A kind of Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method
Technical field
The present invention relates to a kind of Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method, belong to environment-protection wastewater treatment technology Field.
Background technology
Coal resources in China relatively horn of plenty, but petroleum and gas resources relative rarity.Therefore, Modern Coal-based Chemical industry is developed, with coal For Material synthesis, producing clean energy products, part substitutes petroleum chemicals and fuel oil, alleviates China's oil, gas to a certain extent The pressure of inadequate resource.The construction of Modern Coal-based Chemical project typically requires the Large-scale Coal base of supporting billions of tons, and China Main coal place of production water resources ownership per capita and unit area water resource recoverable amount are only the 1/10 of whole nation level.Large-scale Coal Chemical Engineering Project ton product water consumption more than ten tons, year water consumption be typically up to thousand of ten thousand stere, the water resource that region is fragile Balance is easily broken, and even can directly influence local economy society steady development and ecological environmental protection.On the other hand, coalification Work project produces substantial amounts of waste water, and pollutant levels are high, and water quality is complicated, is once discharged in environment, will result in serious environment Contamination accident.
Apply through research and probe in recent years and through engineering approaches, gradually formed with " biochemical wastewater treatment+Treated sewage reusing+film Concentration+evaporative crystallization " it is main Coal Chemical Industry production wastewater treatment technique, successfully realize coal chemical industrial waste water " zero-emission " (Zero Liquid Discharge, ZLD), the stable development to Chemical Industry is significant.But the salt that evaporative crystallization goes out is The carnallite of inferior quality, it is impossible to utilizing, substantial amounts of carnallite becomes another form of pollution.Therefore, a kind of new skill of exploitation is needed badly Art, crystallizes carnallite sub-prime resource, obtains technical grade NaCl and Na2SO4.
It is the most ripe that coal chemical industrial waste water " biochemical treatment+Treated sewage reusing+membrance concentration " processes technique, and overall recovery exists More than 95%, and successful Application in multiple engineerings.Therefore, it is achieved coal chemical industrial waste water sub-prime resource crystallizes, and it is critical only that dense salt Moisture film concentrates reverse osmosis concentrated water and processes.This gang of high slat-containing wastewater TDS reaches 30000-70000mg/L, mainly containing Na+, Cl-and SO42-, Cl-/SO42-(mass ratio) are at 1:2-2:1.Another feature of this waste water is that CODcr concentration is high, reaches 500- 2000mg/L, and complicated component, mainly by Organic substances such as alcohols, alkane, amine, indole, pyrimidine, ketone, acids and lipids Composition, the multiple Organic substance containing colour developing group makes chroma in waste water the highest.Above water quality characteristics brings difficulty to crystallization operation, Crystal salt purity is low and whiteness is the highest, inferior quality, it is impossible to recycling.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of Coal Chemical Industry high slat-containing wastewater sub-prime resource side Method, crystallizes NaCl and Na2SO4 in Coal Chemical Industry high slat-containing wastewater respectively, obtains Nacl, turn waste into wealth.
The technical solution used in the present invention is as follows:
A kind of Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method, it is characterised in that described method is entered according to following steps OK: (1) Coal Chemical Industry high slat-containing wastewater enters electrolytic oxidation apparatus, part extremely difficult degraded COD is removed；(2) giving up after electrolytic oxidation Water enters device for catalyzing and oxidating ozone, aoxidizes further organics removal by catalysis；(3) water outlet after catalytic ozonation is entered Enter Buffer Pool, allow the ozone of residual decompose in Buffer Pool: the waste water in (4) Buffer Pool enters back into nanofiltration device to carry out nanofiltration and divide From；(5) nanofiltration product water entrance reverse osmosis unit concentrates further, produces water and is used for circulating water station moisturizing, and dense hydromining full-boiled process crystallizes Reclaim technical grade NaCl, a small amount of mother solution of periodic exhaustion；Nanofiltration dense hydromining full-boiled process crystallizes, and isolates Na2SO4, mother solution enters freezing Crystallizer, the Natrii Sulfas of precipitation is back to full-boiled process crystalline element, regulates feed liquid sal prunella ratio, it is ensured that Na2SO4 purity, and freezing mother solution is regular Discharge.
Described a kind of Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method, concrete operations are as follows: Coal Chemical Industry height contains Salt waste water enters electrolytic oxidation apparatus, controls electric current 20A, voltage 8V, and hydraulic detention time (HRT) is 2h, removes part extremely difficult Degraded COD, and by larger molecular organics open loop, chain rupture, COD clearance 50%-60%；Electrolytic oxidation apparatus water outlet enters ozone and urges Change oxidation unit, ozone dosage 30-60 mg/L, use zeolite-loaded Mn, Fe, Bi plasma as catalyst, filling rate 45%, hydraulic detention time (HRT) is 1h, removes useless Organic substance in water, COD clearance 30%-50% further；Ozone catalytic oxygen Dissolving water and enter Buffer Pool, make the high oxidative ozone decomposed of residual, prevent from damaging subsequent nano-filtration membrane component, waterpower is stopped Staying the time (HRT) is 2h；Buffer Pool water outlet enters nanofiltration device, and nanofiltration device is divided into two sections of series operations, one section of operating pressure 1.4MPa, two-stage nitration operating pressure 2.8MPa, aquifer yield accounts for 80% into water total amount, and the dense water yield accounts for 20%, and SO42-rejection is more than 97%, nanofiltration is produced water side and is mainly composed of NaCl, and nanofiltration dense water side is mainly composed of Na2SO4 and NaCl, and nanofiltration is produced water and entered anti- Permeability apparatus concentrates reuse further by reverse osmosis, and reverse osmosis unit is divided into two sections of series operations, one section of operating pressure 2.5MPa, two-stage nitration operating pressure 5.0MPa, the response rate 75%, to produce water and be used for circulating water station moisturizing, the crystallization of dense hydromining full-boiled process is reclaimed Technical grade NaCl, a small amount of mother solution of periodic exhaustion, nanofiltration dense hydromining full-boiled process crystallizes, and isolates technical grade Na2SO4, and full-boiled process crystallizes Mother solution enters freezing and crystallizing device, and the Natrii Sulfas of precipitation is back to full-boiled process crystalline element, regulates feed liquid sal prunella ratio, it is ensured that Na2SO4 purity, Freezing mother solution periodic exhaustion.
The present invention compared with prior art, has a characteristic that
1. realize " zero-emission ", the salt sub-prime in waste water is crystallized, it is thus achieved that technical grade Na2SO4 and NaCl, turn waste into wealth；
2. difficult degradation CODcr during electrolytic oxidation and catalytic ozonation are used in combination removal waste water, removal effect is good, decreases NF membrane Organic Pollution, and beneficially crystal salt sub-prime；
3., by nanofiltration separation, aquifer yield accounts for 80%, and substantially containing only NaCl, is concentrated further by reverse osmosis, and dense hydromining is used Full-boiled process crystallization obtains technical grade NaCl, enters the evaporative crystallization water yield and is greatly reduced, reduces energy consumption；
4. the dense hydromining of nanofiltration " full-boiled process crystallization+freezing and crystallizing " technique, Na2SO4Purity is high.
Accompanying drawing explanation
Fig. 1 is Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method process chart.
Fig. 2 is Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method equipment schematic diagram,
Wherein 1 is high slat-containing wastewater collecting pit, and 2 is elevator pump, and 3 is electrolytic oxidation tank, and 4 is electrolytic oxidation circulating pump, and 5 is electrolysis Groove, 6 is ozonator, and 7 is ozone catalytic contact tower, and 8 is Buffer Pool, and 9 is nanofiltration feed pump, and 10 filter for nanofiltration security personnel Device, 11 is nanofiltration high-pressure pump, and 12 is nanofiltration device, and 13 produce water tank for nanofiltration, and 14 produce water elevator pump for nanofiltration, and 15 produce water for nanofiltration Cartridge filter, 16 produce water high-pressure pump for nanofiltration, and 17 produce water reverse osmosis unit for nanofiltration, and 18 is nanofiltration dense water crystallization device, main Denitration heater to be included, denitration separator, denitration condenser, feed pump, circulating pump, freezing unit, freezing and crystallizing device, stiff Device, centrifuge, mother liquor tank etc., 19 be nanofiltration produce concentrated liquid crystallization apparatus, mainly include desalination heater, desalination separator, Desalination condenser, circulating pump, feed pump, thickener, centrifuge, mother liquor tank etc..
Detailed description of the invention
The embodiment of the present invention is implemented in a lurgi coal gasification carbamide chemical plant, the employing of this coal chemical industry enterprises " biochemical treatment+ Treated sewage reusing+membrance concentration " PROCESS FOR TREATMENT productive life waste water, stable operation about 2 years.The former water of the embodiment of the present invention is taken from dense Salt water station reverse osmosis concentrated water pond, the water yield 3 m3/h, water quality: COD 600-900 mg/L, TDS 50000-60000 mg/L, Cl- 18000-21000 mg/L, SO42-9000-12000 mg/L, Na+ 16000-20000 mg/L, colourity 450-500 degree.
High slat-containing wastewater is lifted into electrolytic oxidation tank 3 from high slat-containing wastewater collecting pit 1 by first elevator pump 2, passes through Electrolytic oxidation circulating pump 4 pumps into electrolysis bath 5 and carries out oxidation processes, controls electric current 20A, voltage 8V, and hydraulic detention time (HRT) is 2h, removes part extremely difficult degraded COD, and by larger molecular organics open loop, chain rupture, water outlet COD 240-450 mg/L, colourity 40-50 degree；Electrolytic oxidation apparatus water outlet enters ozone catalytic contact tower 7, fill in contact tower zeolite-loaded Mn, Fe, Bi etc. from The catalyst that son is made, filling rate 45%, ozonator 6 sustainable supply ozone, ozone dosage 40 mg/L, HRT are 1h, Remove useless Organic substance in water, water outlet COD 170-300 mg/L, colourity 25-30 degree further；Catalytic ozonation water outlet enters Buffer Pool 8, makes the high oxidative ozone decomposed of residual, prevents from damaging subsequent nano-filtration membrane component, and HRT is 2h；Buffer Pool Water outlet is lifted into nanofiltration cartridge filter 10 through nanofiltration feed pump 9, then enters nanofiltration device 12 after nanofiltration high-pressure pump 11, point It is two sections of series operations, one section of operating pressure 1.5MPa, two-stage nitration operating pressure 2.8MPa, the response rate 80%, produce the water water yield 2.4 M3/h, TDS 40000-45000 mg/L, Cl-19000-23000 mg/L, SO42-are less than 700 mg/L, the dense water yield 0.6 M3/h, TDS 95000-120000 mg/L, Cl-11000-15000 mg/L, SO42-is at 50000 more than mg/L；Nanofiltration is produced Water enters nanofiltration and produces water tank 13, produces water elevator pump 14 by nanofiltration and enters nanofiltration product water cartridge filter 15, then produces water through nanofiltration High-pressure pump 16 enters nanofiltration and produces water reverse osmosis unit 17, and reverse osmosis unit is divided into two sections of series operations, one section of operating pressure 2.5MPa, two-stage nitration operating pressure 5.0MPa, the response rate 75%, the concentrated solution water yield 0.6 m3/h, TDS are more than 120000 mg/L；Receive Filter is produced concentrated liquid and is entered nanofiltration product concentrated liquid crystallization apparatus 19, reclaims technical grade NaCl, a small amount of mother solution by full-boiled process crystallization Entrance mother liquor tank stores, periodic exhaustion；The dense water of nanofiltration enters nanofiltration dense water crystallization device 18, uses full-boiled process crystallization, and separation is gone to work Industry level Na2SO4, full-boiled process crystalline mother solution enters freezing and crystallizing device, and the Natrii Sulfas of precipitation is back to full-boiled process crystalline element, regulates feed liquid sal prunella Ratio, it is ensured that Na2SO4 purity, freezing mother solution periodic exhaustion.

Claims (7)

1. a Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method, it is characterised in that described method is according to following steps Carry out: (1) Coal Chemical Industry high slat-containing wastewater enters electrolytic oxidation apparatus, remove part extremely difficult degraded COD；(2) after electrolytic oxidation Waste water enters device for catalyzing and oxidating ozone, aoxidizes further organics removal by catalysis；(3) water outlet after catalytic ozonation Enter Buffer Pool, allow the ozone of residual decompose in Buffer Pool: the waste water in (4) Buffer Pool enters back into nanofiltration device and carries out nanofiltration Separate；(5) nanofiltration product water entrance reverse osmosis unit concentrates further, produces water and is used for circulating water station moisturizing, and dense hydromining full-boiled process is tied Brilliant recovery technical grade NaCl, a small amount of mother solution of periodic exhaustion；Nanofiltration dense hydromining full-boiled process crystallizes, and isolates Na2SO4, mother solution enters cold Freezing crystallizer, the Natrii Sulfas of precipitation is back to full-boiled process crystalline element, regulates feed liquid sal prunella ratio, it is ensured that Na2SO4 purity, and freezing mother solution is fixed Phase discharges.
Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method the most according to claim 1, it is characterised in that: pending Waste water is Coal Chemical Industry high slat-containing wastewater, and from coal chemical industry enterprises strong brine membrance concentration reverse osmosis unit dense water side, TDS reaches 30000 -70000mg/L-。
Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method the most according to claim 1, it is characterised in that: Coal Chemical Industry High slat-containing wastewater enters electrolytic oxidation apparatus, it is desirable to keeping electric current 20A, voltage 8V, hydraulic detention time (HRT) is that 2h, COD go Except rate 50%-60%.
Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method the most according to claim 1, it is characterised in that: described Device for catalyzing and oxidating ozone when carrying out catalytic oxidation treatment, ozone dosage 30-60 mg/L, catalyst filling rate 45%, HRT is 1h, COD clearance 30%-50%.
Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method the most according to claim 1, it is characterised in that: ozone is urged Changing oxidation water outlet and enter Buffer Pool, make the high oxidative ozone decomposed of residual, HRT is 2h.
Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method the most according to claim 1, it is characterised in that: Buffer Pool Water outlet enters nanofiltration device, and nanofiltration device is divided into two sections of series operations, one section of operating pressure 1.5MPa, two-stage nitration operating pressure 2.8MPa, it is desirable to aquifer yield accounts for 80% into water total amount, the dense water yield accounts for 20%.
Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method the most according to claim 1, it is characterised in that: nanofiltration is produced Water is concentrated further by reverse osmosis, produces Water circulation, and reverse osmosis unit is divided into two sections of series operations, one section of operating pressure 2.5MPa, two-stage nitration operating pressure 5.0MPa, the response rate 75%.
CN201610630050.7A 2016-08-03 2016-08-03 A kind of Coal Chemical Industry high slat-containing wastewater sub-prime recycling processing method Pending CN106186487A (en)

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Cited By (10)

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CN107500317A (en) * 2017-07-26 2017-12-22 中国石油化工股份有限公司 A kind of method that containing wastewater from catalyst produces low silicon sodium chloride and sulfate crystal salt
CN107522340A (en) * 2017-10-19 2017-12-29 北京沃特尔水技术股份有限公司 A kind of system and method for recycling high villaumite sewage
CN108128961A (en) * 2018-01-25 2018-06-08 东莞市圆明生物科技有限公司 Brine waste zero emission method and system
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
CN109607574A (en) * 2019-01-03 2019-04-12 中国中轻国际工程有限公司 A kind of strong brine production sal prunella technique
CN109650601A (en) * 2019-01-31 2019-04-19 湖北金润德环保技术有限公司 A kind of Copper making sulfuric acid acid water Zero discharge treatment method
CN109775939A (en) * 2019-03-19 2019-05-21 中海油山西能源投资有限责任公司 A kind of coal chemical industry sewage zero-emission and divide salt crystal system and method
CN109942148A (en) * 2019-03-19 2019-06-28 中海油山西能源投资有限责任公司 A kind of coal chemical industry sewage zero discharge treatment with electrolytic oxidation and divide salt crystal system and method
CN111807590A (en) * 2019-04-12 2020-10-23 江苏南大环保科技有限公司 Resource treatment method for exempting dangerous waste of high ammonia nitrogen wastewater in coal chemical industry
CN112624467A (en) * 2020-11-30 2021-04-09 项修瑞 Method for recycling pharmaceutical chemical high-salt-content wastewater

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CN102616891A (en) * 2011-12-31 2012-08-01 广东先导稀材股份有限公司 Method for treating sewage containing sodium sulfate and sodium chloride
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CN102616891A (en) * 2011-12-31 2012-08-01 广东先导稀材股份有限公司 Method for treating sewage containing sodium sulfate and sodium chloride
CN105217872A (en) * 2015-11-06 2016-01-06 北京沃特尔水技术股份有限公司 A kind for the treatment of process of coal chemical industrial waste water

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107500317B (en) * 2017-07-26 2019-09-10 中国石油化工股份有限公司 A kind of method that containing wastewater from catalyst produces low silicon sodium chloride and sulfate crystal salt
CN107500317A (en) * 2017-07-26 2017-12-22 中国石油化工股份有限公司 A kind of method that containing wastewater from catalyst produces low silicon sodium chloride and sulfate crystal salt
CN107522340A (en) * 2017-10-19 2017-12-29 北京沃特尔水技术股份有限公司 A kind of system and method for recycling high villaumite sewage
CN108128961A (en) * 2018-01-25 2018-06-08 东莞市圆明生物科技有限公司 Brine waste zero emission method and system
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
CN109607574A (en) * 2019-01-03 2019-04-12 中国中轻国际工程有限公司 A kind of strong brine production sal prunella technique
CN109650601A (en) * 2019-01-31 2019-04-19 湖北金润德环保技术有限公司 A kind of Copper making sulfuric acid acid water Zero discharge treatment method
CN109650601B (en) * 2019-01-31 2021-11-12 湖北金润德环保技术有限公司 Copper smelting sulfuric acid waste acid wastewater zero-discharge treatment method
CN109775939A (en) * 2019-03-19 2019-05-21 中海油山西能源投资有限责任公司 A kind of coal chemical industry sewage zero-emission and divide salt crystal system and method
CN109942148A (en) * 2019-03-19 2019-06-28 中海油山西能源投资有限责任公司 A kind of coal chemical industry sewage zero discharge treatment with electrolytic oxidation and divide salt crystal system and method
CN109942148B (en) * 2019-03-19 2022-05-24 中海油山西能源投资有限责任公司 Coal chemical industry sewage zero-discharge treatment and salt separation crystallization system and method with electrolytic oxidation
CN109775939B (en) * 2019-03-19 2022-06-03 中海油山西能源投资有限责任公司 Zero-discharge and salt-separation crystallization system and method for coal chemical industry sewage
CN111807590A (en) * 2019-04-12 2020-10-23 江苏南大环保科技有限公司 Resource treatment method for exempting dangerous waste of high ammonia nitrogen wastewater in coal chemical industry
CN111807590B (en) * 2019-04-12 2022-03-08 江苏南大环保科技有限公司 Resource treatment method for exempting dangerous waste of high ammonia nitrogen wastewater in coal chemical industry
CN112624467A (en) * 2020-11-30 2021-04-09 项修瑞 Method for recycling pharmaceutical chemical high-salt-content wastewater

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