CN106186537A - A kind of evaporative crystallization new technology of high salt high concentrated organic wastewater - Google Patents

A kind of evaporative crystallization new technology of high salt high concentrated organic wastewater Download PDF

Info

Publication number
CN106186537A
CN106186537A CN201610669568.1A CN201610669568A CN106186537A CN 106186537 A CN106186537 A CN 106186537A CN 201610669568 A CN201610669568 A CN 201610669568A CN 106186537 A CN106186537 A CN 106186537A
Authority
CN
China
Prior art keywords
dope
salt
evaporative crystallization
crystallization
organic wastewater
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.)
Pending
Application number
CN201610669568.1A
Other languages
Chinese (zh)
Inventor
韩正昌
马军军
韩峰
朱家明
高亚娟
张寅丞
朱伯淞
何建龙
季军
吴传宝
张寿兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Ge Luote Environmental Engineering Limited-Liability Co
Original Assignee
Nanjing Ge Luote Environmental Engineering Limited-Liability Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Ge Luote Environmental Engineering Limited-Liability Co filed Critical Nanjing Ge Luote Environmental Engineering Limited-Liability Co
Priority to CN201610669568.1A priority Critical patent/CN106186537A/en
Publication of CN106186537A publication Critical patent/CN106186537A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01DCOMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00Halides of sodium, potassium or alkali metals in general
    • C01D3/04Chlorides
    • 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
    • C02F1/048Purification of waste water by 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
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • 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
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultra-violet light
    • 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
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • 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
    • C02F1/722Oxidation by peroxides
    • 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
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • 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
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • 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
    • C02F2209/08Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • 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

Abstract

The invention provides the evaporative crystallization new technology of a kind of high salt high concentrated organic wastewater, mainly comprise the steps that high salt high concentrated organic wastewater is carried out oil removing by (1), reduce the COD in waste water;(2) waste water after processing, by high efficiency particulate air filter, enters evaporated crystallization device after removing float;(3) evaporated crystallization device can produce two strands of waste water, and one is evaporation condensate, directly carries out biochemical treatment;One is evaporative crystallization dope, carries out solid-liquid separation;(4) carry out processing or refining by the NaCl crystal that solid-liquid separation produces;(5) dope of higher concentration solid-liquid separation produced carries out catalytic oxidation treatment;(6) dope after step (5) being processed is back to wastewater collection pond, is again introduced into evaporated crystallization device after mix homogeneously.In the present invention, evaporated crystallization device will not produce impact because of the problem of evaporation dope, and technological process is simple, and equipment is simple to operate, can realize the continuous operation of whole technique.

Description

A kind of evaporative crystallization new technology of high salt high concentrated organic wastewater
Technical field
The present invention relates to the reuse technology method in Industrial Wastewater Treatment reuse technology field, particularly high salt high-COD waste water, Belong to environment-friendly treating process field.
Background technology
High salt high concentrated organic wastewater is the waste water that the industries such as pesticide, medicine, printing and dyeing produce, and this waste water has difficult fall The feature that solution, toxicity are high, pollution level is high.The waste water of this type cannot be used for biological method and processes, and can make microorganism Becoming great impact, cause microorganism mortality, treatment effect is the best;The waste water of the type is also not suitable for using chemical oxidation Technical finesse, because containing substantial amounts of salinity in waste water, it can cut down the oxidation effectiveness of oxidant significantly, causes processing cost high And poor effect.
Therefore, for the waste water of high salt high-enriched organics, the technology used now is evaporative crystallization technique, by high salinity Organic wastewater concentrate, evaporation dope in can separate out NaCl crystal, evaporation condensate salt content is relatively low, organic concentration relatively Height, is suitable for the process using biochemical processing method to carry out next step.Concrete technology flow process is as shown in Figure 1.
In existing process technique, evaporation condensate carries out biochemical treatment, containing some in evaporative crystallization mother solution NaCl crystal and part evaporation dope, after solid-liquid separation, NaCl crystal becomes a kind of side-product salt, evaporation dope backflow To original wastewater collection pond, it is circulated and again evaporates.But, existing technique two drawbacks the biggest of existence:
One is, Organic substance and the continuous enrichment of salinity.In evaporation dope, Organic substance is enriched the Organic substance more many times higher than stock solution And salinity, during repeatedly circulating and evaporating, Organic substance and salt branch constantly accumulate, and cause and enter the useless of crystallizing evaporator Water concentration can be more and more higher, and this can cause the effect of evaporative crystallization to reduce, and the viscosity of evaporation dope is increasing, its boiling point Also can be more and more higher, eventually result in the paralysis of whole vapo(u)rization system.
Two are, evaporation equipment blocks.The concentration of solution organic concentration and salinity owing to entering crystallizing evaporator is got over More to come, if long-term circulation, solution can become thickness, and solid-liquid is not readily separated, and understands in crystallizing evaporator internal bond, blocking, Crystallizing evaporator is caused to be not normally functioning.
The two problem directly can cause that evaporation effect is the best, energy consumption becomes big, equipment damage is serious, comes for crystallization apparatus Say it is two fatal problems.If it is desired to overcome the two problem, need to use reactor evaporation dope, reactor for treatment ability Limited and costly, required is relatively costly, and enterprise is difficult to bear.
Summary of the invention
For the problem of existing existence, the invention discloses the evaporative crystallization new technology of kind of high salt high concentrated organic wastewater, It can overcome the problem run in prior art, and it mainly comprises the steps that
(1) the high salt high concentrated organic wastewater that wastewater collection pond is collected is carried out oil removing, the oils Organic substance of high COD will be caused Remove, reduce the COD in waste water and remove;
(2) float in waste water, by high efficiency particulate air filter, is removed, is entered evaporation afterwards by the waste water after step (1) being processed Crystallization apparatus;
(3) in step (2), evaporated crystallization device can produce two strands of waste water, and one is evaporation condensate, its salinity, content of organics Relatively low, directly carry out biochemical treatment;One is evaporative crystallization dope, and evaporative crystallization dope contains NaCl crystal and more high salt Divide and organic dope, evaporative crystallization dope is carried out solid-liquid separation;
(4) carry out processing or refining as hazardous waste using the NaCl crystal that solid-liquid separation in step (3) produces;
(5) dope of higher concentration solid-liquid separation in step (3) produced carries out catalytic oxidation treatment, uses oxidant and urges Agent is to evaporation dope;
(6) dope after step (5) being processed is back to existing wastewater collection pond, is again introduced into evaporative crystallization after mix homogeneously Device, carries out the circulation of technique.
After catalytic oxidation treatment, it is organic that the Organic substance in evaporation dope is decomposed into low boiling by high boiling point organic compound Thing, after the evaporation concentrate circulating after process to the vaporising device of front end, lower boiling Organic substance can be taken out of along with steam, enters into In evaporation condensate, will not be enriched with in crystallizing evaporator, the most also because of Organic substance enrichment, equipment blocking, evaporation effect can occur The best problem;
Preferably, the oil removing of step (1) is oil removal by air bubbling, can be removed by grease that is water insoluble and that be partially soluble in water.
Preferably, the evaporated crystallization device in step (2) is triple effect evaporation crystallizer or MBR crystallizing evaporator.
Preferably, the NaCl crystal in step (3) refines, and prepares for its recycling.
Preferably, in step (5) in catalytic oxidation technique, the oxidant of employing is H2O2And ozone, catalyst is uviol lamp And catalytic filler, the response time is 0.5-4h.
The invention have the benefit that
1, the relevant issues of evaporation concentrate circulating evaporation are solved.If evaporative crystallization dope does not carry out catalytic oxidation treatment, directly It is circulated evaporation, enrichment and the accumulation of organic concentration can be caused, cause the poor effect of crystallizing evaporator, energy consumption to strengthen, Equipment blocks, and even results in the paralysis of whole crystallizer.After evaporation dope carries out catalytic oxidation treatment, high boiling point therein is had Machine thing is converted into low-boiling-point organic compound, and when carrying out evaporative crystallization again, low-boiling-point organic compound can enter into along with steam condensation In evaporation condensate, will not accumulate in crystallizing evaporator and be enriched with, therefore avoid problem produced by direct evaporation.
2, technological process is simple, can realize whole technique and run continuously.In whole set process, evaporated crystallization device will not be because of Problem for evaporation dope produces impact, and technological process is simple, and equipment is simple to operate, can realize the continuous operation of whole technique.
Accompanying drawing explanation
Fig. 1, the process chart of prior art;
Fig. 2, the process chart of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, it is further elucidated with the present invention, it should be understood that following detailed description of the invention is only For the present invention being described rather than limiting the scope of the present invention.
The evaporative crystallization new technology of a kind of high salt high concentrated organic wastewater, mainly comprises the steps that
(1) high salt high concentrated organic wastewater is carried out oil removing, the oils organic matter removal of high COD will be caused, reduce in waste water COD removes;Oil removing is oil removal by air bubbling, can be removed by grease that is water insoluble and that be partially soluble in water;
(2) float in waste water, by high efficiency particulate air filter, is removed, is entered evaporation afterwards by the waste water after step (1) being processed Crystallization apparatus, evaporated crystallization device is triple effect evaporation crystallizer or MBR crystallizing evaporator;
(3) in step (2), evaporated crystallization device can produce two strands of waste water, and one is evaporation condensate, its salinity, content of organics Relatively low, directly carry out biochemical treatment;One is evaporative crystallization dope, and evaporative crystallization dope contains NaCl crystal and more high salt Divide and organic dope, evaporative crystallization dope is carried out solid-liquid separation;
(4) carry out processing or refining as hazardous waste using the NaCl crystal that solid-liquid separation in step (3) produces;It is preferably essence System;
(5) dope of higher concentration solid-liquid separation in step (3) produced carries out catalytic oxidation treatment, uses oxidant and urges Agent is to evaporation dope;
(6) dope after step (5) being processed is back to existing wastewater collection pond, is again introduced into evaporative crystallization after mix homogeneously Device, carries out the circulation of technique, and the oxidant of employing is H2O2And ozone, catalyst is uviol lamp and catalytic filler, the response time For 0.5-4h.
Embodiment 1
Wastewater source, in the waste water of certain pesticide company chlopyrifos production technology, proceeds by from first evaporation, the initial number of waste water Data according to this and after process are as shown in table 1.
By the data in table 1 it can be seen that stock solution is after crystallization, under in condensed fluid, salinity and organic concentration are notable Fall, has reached the standard of direct biochemistry, and in evaporation dope, Organic substance and salinity are all in enrichment.Evaporation dope is being carried out heterogeneous urging After changing oxidation processes, the pH of evaporation dope is not remarkably decreased, but after again evaporating, the COD in evaporation condensed water is notable Increasing, this explanation is after catalytic oxidation treatment, and the high boiling point organic compound in evaporation dope changes for low-boiling-point organic compound, along with Steam enters in evaporation condensate, will not be enriched with in re-evaporation crystallizer and accumulate, it is to avoid cause because evaporating in proper order A series of problems being difficult to overcome, respond well.
In heterogeneous catalytic oxidation, the addition of hydrogen peroxide is the 1% of liquor capacity ratio, ozonation aerated 2h, and additional ultraviolet is urged Change, solution adds activated-carbon catalyst.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, also includes The technical scheme being made up of above technical characteristic combination in any.It should be pointed out that, for those skilled in the art For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also considered as Protection scope of the present invention.

Claims (7)

1. the evaporative crystallization new technology of a high salt high concentrated organic wastewater, it is characterised in that mainly comprise the steps that
(1) the high salt high concentrated organic wastewater that wastewater collection pond is collected is carried out oil removing, the oils Organic substance of high COD will be caused Remove, reduce the COD in waste water;
(2) float in waste water, by high efficiency particulate air filter, is removed, is entered evaporation afterwards by the waste water after step (1) being processed Crystallization apparatus;
(3) in step (2), evaporated crystallization device can produce two strands of waste water, and one is evaporation condensate, directly carries out biochemical treatment; One is evaporative crystallization dope, and evaporative crystallization dope is containing NaCl crystal, salinity and organic dope, and evaporative crystallization is dense Liquid carries out solid-liquid separation;
(4) carry out processing or refining as hazardous waste using the NaCl crystal that solid-liquid separation in step (3) produces;
(5) dope of higher concentration solid-liquid separation in step (3) produced carries out catalytic oxidation treatment, uses oxidant and urges Agent processes evaporation dope;
(6) dope after step (5) being processed is back to wastewater collection pond, is again introduced into evaporated crystallization device after mix homogeneously, Carry out the circulation of technique.
2. the evaporative crystallization new technology of high salt high concentrated organic wastewater as claimed in claim 1, it is characterised in that described step (1) oil removing in is oil removal by air bubbling, can be removed by grease that is water insoluble and that be partially soluble in water.
3. the evaporative crystallization new technology of high salt high concentrated organic wastewater as claimed in claim 1, it is characterised in that described step (2) evaporated crystallization device in is triple effect evaporation crystallizer or MBR crystallizing evaporator.
4. the evaporative crystallization new technology of high salt high concentrated organic wastewater as claimed in claim 1, it is characterised in that described step (3) the NaCl crystal in refines, and prepares for its recycling.
5. the evaporative crystallization new technology of high salt high concentrated organic wastewater as claimed in claim 1, it is characterised in that described step (5), in catalytic oxidation technique, the oxidant of employing is H2O2And ozone.
6. the evaporative crystallization new technology of high salt high concentrated organic wastewater as claimed in claim 1, it is characterised in that described step (5), in catalytic oxidation technique, the catalyst of employing is uviol lamp and catalytic filler.
7. the evaporative crystallization new technology of high salt high concentrated organic wastewater as claimed in claim 1, it is characterised in that described step (5), in catalytic oxidation technique, the response time is 0.5-4h.
CN201610669568.1A 2016-08-16 2016-08-16 A kind of evaporative crystallization new technology of high salt high concentrated organic wastewater Pending CN106186537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610669568.1A CN106186537A (en) 2016-08-16 2016-08-16 A kind of evaporative crystallization new technology of high salt high concentrated organic wastewater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610669568.1A CN106186537A (en) 2016-08-16 2016-08-16 A kind of evaporative crystallization new technology of high salt high concentrated organic wastewater

Publications (1)

Publication Number Publication Date
CN106186537A true CN106186537A (en) 2016-12-07

Family

ID=57521534

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610669568.1A Pending CN106186537A (en) 2016-08-16 2016-08-16 A kind of evaporative crystallization new technology of high salt high concentrated organic wastewater

Country Status (1)

Country Link
CN (1) CN106186537A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107298494A (en) * 2017-07-04 2017-10-27 聊城鲁西聚碳酸酯有限公司 A kind of system and method for handling the waste water produced in makrolon technique
CN107601747A (en) * 2017-11-07 2018-01-19 哈尔滨工程大学 A kind of crystallizing evaporator of oil removing containing salt oil-containing wastewater
CN108264063A (en) * 2018-01-13 2018-07-10 安徽金禾实业股份有限公司 A kind of method of sewage salt extraction in maltol production
CN108658389A (en) * 2018-06-07 2018-10-16 戴安娜 A kind of processing method of high-sulfate waste water
CN109896683A (en) * 2019-03-26 2019-06-18 江苏春江润田农化有限公司 The cycling and reutilization treatment process of time acid producing waste water
CN110002656A (en) * 2019-05-17 2019-07-12 上海试四赫维化工有限公司 A kind of ethyl acetate liquid waste treatment system and its processing method
CN110002657A (en) * 2019-05-17 2019-07-12 上海试四赫维化工有限公司 A kind of processing system and its processing method of dichloroethanes waste liquid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102079603A (en) * 2010-12-20 2011-06-01 大连理工大学 High-concentration organic and inorganic mixed wastewater treatment and recovery method
CN104478173A (en) * 2014-12-22 2015-04-01 新疆环境工程技术有限责任公司 Wastewater treatment and recycling integrated treatment process for coal chemical enterprise
CN104628205A (en) * 2015-01-30 2015-05-20 苏州聚智同创环保科技有限公司 High-salt organic wastewater zero discharge treatment process
CN105439395A (en) * 2016-01-04 2016-03-30 大唐国际化工技术研究院有限公司 Zero-discharge treatment method of salt-containing organic wastewater
CN105776711A (en) * 2016-05-10 2016-07-20 李明 Industrial wastewater resource zero-discharge system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102079603A (en) * 2010-12-20 2011-06-01 大连理工大学 High-concentration organic and inorganic mixed wastewater treatment and recovery method
CN104478173A (en) * 2014-12-22 2015-04-01 新疆环境工程技术有限责任公司 Wastewater treatment and recycling integrated treatment process for coal chemical enterprise
CN104628205A (en) * 2015-01-30 2015-05-20 苏州聚智同创环保科技有限公司 High-salt organic wastewater zero discharge treatment process
CN105439395A (en) * 2016-01-04 2016-03-30 大唐国际化工技术研究院有限公司 Zero-discharge treatment method of salt-containing organic wastewater
CN105776711A (en) * 2016-05-10 2016-07-20 李明 Industrial wastewater resource zero-discharge system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107298494A (en) * 2017-07-04 2017-10-27 聊城鲁西聚碳酸酯有限公司 A kind of system and method for handling the waste water produced in makrolon technique
CN107601747A (en) * 2017-11-07 2018-01-19 哈尔滨工程大学 A kind of crystallizing evaporator of oil removing containing salt oil-containing wastewater
CN107601747B (en) * 2017-11-07 2019-12-06 青岛哈工资源环境技术有限公司 oil-removing evaporative crystallizer for salt-containing oily wastewater
CN108264063A (en) * 2018-01-13 2018-07-10 安徽金禾实业股份有限公司 A kind of method of sewage salt extraction in maltol production
CN108658389A (en) * 2018-06-07 2018-10-16 戴安娜 A kind of processing method of high-sulfate waste water
CN109896683A (en) * 2019-03-26 2019-06-18 江苏春江润田农化有限公司 The cycling and reutilization treatment process of time acid producing waste water
CN110002656A (en) * 2019-05-17 2019-07-12 上海试四赫维化工有限公司 A kind of ethyl acetate liquid waste treatment system and its processing method
CN110002657A (en) * 2019-05-17 2019-07-12 上海试四赫维化工有限公司 A kind of processing system and its processing method of dichloroethanes waste liquid

Similar Documents

Publication Publication Date Title
CN103936218B (en) The high fluorine-containing nitrogenous wastewater from battery production of a kind of photovoltaic industry becomes the method for zero release
KR101087257B1 (en) Water Treatment Method Using An Inorganic Powder Reagent With High Specific Surface Area Including A Step Of Recycling Said Reagent
US7681643B2 (en) Treatment of brines for deep well injection
KR100361799B1 (en) Method and apparatus for regenerating photoresist developing waste liquid
CN104071808B (en) A kind of Coal Chemical Industry strong brine is separated the method that evaporative crystallization prepares Industrial Salt
AU2009259824B2 (en) Forward osmosis separation processes
CN101928087B (en) Method for treating high salinity wastewater
CN100548906C (en) The removal method of ammonia nitrogen in a kind of coking chemical waste water
KR100191961B1 (en) Apparatus for producing ultra-pure water
CN101264948B (en) Ammonia nitrogen waste water discharge-reducing and ammonia nitrogen resource utilizing device and method
CN104326612B (en) A kind of method and system reclaiming salt from Waste Water Treatment
US8343328B2 (en) Brine purification
CN102583862B (en) Method and system for treating saline wastewater to zero discharge and recycling
CN105540976A (en) Coal chemical strong brine zero emission and salt screening technology
KR20080109860A (en) Hybrid membrane module, system and process for treatment of industrial wastewater
CN105152443A (en) Method and system for recycling crystallized salt resources in high-salt-content wastewater zero discharge
CN103224260B (en) Wastewater treatment and recovery method
CN105439395A (en) Zero-discharge treatment method of salt-containing organic wastewater
CA2833012A1 (en) Method of recovering oil or gas and treating the resulting produced water
RU2052390C1 (en) Method for deep treatment of sewage discharged from urea production and device for decomposition of urea contained in sewage discharged from urea production
CN104926021B (en) Phenol ammonia waste water processing unit
CN1625433A (en) Method and apparatus for treatment of fluid by reverse osmosis process under acidic conditions
CA2819780C (en) Chemical oxidation or electromagnetic treatment in sagd operations
AU2014352663B2 (en) Systems and methods for removing minerals from a brine using electrodialysis
CN104150722A (en) Treatment process for acrylic fiber waste water

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20161207