CN108996788A - A kind of zero emission method of wastewater based on crystallisation by cooling and flue evaporation technique - Google Patents
A kind of zero emission method of wastewater based on crystallisation by cooling and flue evaporation technique Download PDFInfo
- Publication number
- CN108996788A CN108996788A CN201810838475.6A CN201810838475A CN108996788A CN 108996788 A CN108996788 A CN 108996788A CN 201810838475 A CN201810838475 A CN 201810838475A CN 108996788 A CN108996788 A CN 108996788A
- Authority
- CN
- China
- Prior art keywords
- water
- waste water
- delivered
- concentrated water
- concentrated
- 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
Links
Classifications
-
- 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
- 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
- C02F1/001—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
- C02F1/44—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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The present invention relates to wastewater treatment method fields, and in particular to a kind of zero emission method of wastewater based on crystallisation by cooling and flue evaporation technique.The present invention program is as follows: (1) waste water being transported to waste water and placed in pond；(2) it is then delivered in reaction settling basin；(3) supernatant that step (2) obtains is delivered in regulating tank by tubular type microfiltration equipment；(4) it will be delivered in intermediate water tank by the waste water in step (3) regulating tank；(5) step (4) are delivered to filter by the waste water of intermediate water tank；(6) the sulfur acid sodium waste water that step (5) obtains is delivered to concentration systems one, it obtains producing water one and concentrated water one, concentrated water one is delivered in solid-liquid separator, obtain one filtrate of sodium sulfate crystal and concentrated water, the sodium chloride-containing waste water that step (5) obtains is delivered to concentration systems two, it obtains producing water two and concentrated water two, bypass flue evaporator enters deduster gas approach after being atomized one filtrate of concentrated water and concentrated water two and is discharged.
Description
Technical field
The present invention relates to wastewater treatment method fields, and in particular to a kind of useless based on crystallisation by cooling and flue evaporation technique
Water zero discharge method.
Background technique
Physical treatment process refer to by undissolved suspended state pollutant in physical action separation, recycling waste water (including
Oil film and oil droplet) method, gravitational separation process, centrifugal separation and sieving retention method etc. can be divided into.Belong to gravitational separation process
Processing unit has precipitating, floats (air bearing) etc., the processing equipment accordingly used be setting pot, sedimentation basin, oil separator, flotation tank and
Its auxiliary equipment etc..Inherently a kind of processing unit of centrifugal separation, the processing unit used have centrifugal separator and water rotation
Separator etc..Sieving retention method has grizzly to retain and filter two kinds of processing units, and the processing equipment that the former uses is grid, sieve
Net, and the latter uses sand filter and micropore filter etc..Processing method based on heat exchange principle also belongs at physics
Logos.The valuable substance in waste water can preferably be recycled by handling waste water by physical method.
Summary of the invention
The present invention be desirable to provide one kind can recovery section industry water and Na2SO4 crystal, and by its waste liquid to bypass cigarette
The form of road evaporation is discharged into deduster gas approach, and that realizes the zero-emission target of waste water evaporates skill based on crystallisation by cooling and flue
The zero emission method of wastewater of art, concrete scheme are as follows:
A kind of zero emission method of wastewater based on crystallisation by cooling and flue evaporation technique, which comprises the steps of:
(1) waste water waste water is transported to place in pond；
(2) waste water for placing pond by waste water is transported in reaction settling basin, and is put into sodium hydroxide in reaction settling basin
And sodium carbonate, supernatant and sludge is then obtained by filtration；
(3) supernatant that step (2) obtains is delivered in regulating tank by tubular type microfiltration equipment, and is put in regulating tank
Enter sulfuric acid, adjust PH to 8-9, the sludge that above-mentioned steps (2) obtain is delivered in sludge dewatering case, filter cake and filtrate are obtained,
Obtained filtrate is re-delivered to the waste water in step (1) to place in pond；
(4) it will be delivered in intermediate water tank (can reduce water velocity) by the waste water in step (3) regulating tank；
(5) step (4) being delivered to filter by the waste water of intermediate water tank, the filter inlet is connected with nanofiltration system,
Waste water is divided into sodium chloride-containing waste water and containing sodium carbonate waste water after nanofiltration system；
(6) the sulfur acid sodium waste water that step (5) obtains is delivered to concentration systems one, obtains producing water one and concentrated water one, the production
Water one is recovered, and the concentrated water one is transported in cooling crystallization tower, will be delivered to solid-liquid by the concentrated water one of crystallizing tower later
In separator, one filtrate of sodium sulfate crystal and concentrated water is obtained, sodium sulfate crystal is recycled, the sodium chloride-containing that step (5) is obtained
Waste water is delivered to concentration systems two, obtains producing water two and concentrated water two, the production water two are recovered, the concentrated water two is transported to steaming
Flood case, and one filtrate of concentrated water is transported to evaporation water tank, and bypass flue evaporator is entered under the action of compressed gas, other
Road flue evaporator will enter deduster gas approach after one filtrate of concentrated water and concentrated water atomization and be discharged.
The evaporation tank outlet is equipped with two-fluid nozzle.Temperature in the step (6) in crystallizing tower is -1-1 DEG C.Promote
Sodium carbonate crystallization.
Waste water in the present invention places pond and is used to place the waste water of step (1) and the filtrate of step (2), and reaction settling basin is used
In precipitating, and sodium carbonate is added, subsequent sodium carbonate is facilitated to crystallize, sludge dewatering case is for the sludge of step (2) to be made into
Filter cake and filter mud, for further filtering, regulating tank is used to that sulfuric acid to be added tubular type microfiltration equipment, adjusts waste water acid-base property, in
Between water tank for reducing water velocity, for containing sodium carbonate waste water to be further concentrated, concentration systems two are used for concentration systems one
Sodium chloride-containing waste water is further concentrated, water tank is evaporated and bypass flue evaporator is used for two mist of one filtrate of concentrated water and concentrated water
Change, concentrated water two is evaporated in evaporation water tank, and sodium chloride has been left in evaporation water tank, subsequent to recycle.
The invention has the following advantages that
1. can demineralized water, remove oil removal；
2. can reuse a big chunk industrial water, the industrial water of reuse can further be utilized；
Na2SO4 crystal is obtained 3. can separate；
4. bypass flue evaporates remaining waste water, wastewater zero discharge is realized, reducing coal-fired industry, (present invention is mainly applied to steam power plants
Deng) surrounding enviroment are polluted.
Detailed description of the invention
Fig. 1: the flow diagram of the application.
Specific embodiment
Embodiment 1
(1) waste water waste water is transported to place in pond；
(2) waste water for placing pond by waste water is transported in reaction settling basin, and is put into sodium hydroxide in reaction settling basin
And sodium carbonate, supernatant and sludge is then obtained by filtration；
(3) supernatant that step (2) obtains is delivered in regulating tank by tubular type microfiltration equipment, and is put in regulating tank
Enter sulfuric acid, adjusts PH to 8, the sludge that above-mentioned steps (2) obtain is delivered in sludge dewatering case, filter cake and filtrate are obtained, it will
Obtained filtrate is re-delivered to the waste water in step (1) and places in pond；
(4) it will be delivered in intermediate water tank by the waste water in step (3) regulating tank；
(5) step (4) being delivered to filter by the waste water of intermediate water tank, the filter inlet is connected with nanofiltration system,
Waste water is divided into sodium chloride-containing waste water and containing sodium carbonate waste water after nanofiltration system；
(6) the sulfur acid sodium waste water that step (5) obtains is delivered to concentration systems one, obtains producing water one and concentrated water one, the production
Water one is recovered, and the concentrated water one is transported in cooling crystallization tower, and crystallizing tower temperature is -1 DEG C, later will be by crystallizing tower
Concentrated water one is delivered in solid-liquid separator, is obtained one filtrate of sodium sulfate crystal and concentrated water, sodium sulfate crystal is recycled, by step
(5) the sodium chloride-containing waste water obtained is delivered to concentration systems two, obtains producing water two and concentrated water two, the production water two are recovered, institute
State concentrated water two and be transported to evaporation water tank, one filtrate of concentrated water is transported to evaporation water tank, under the action of compressed gas into
Enter bypass flue evaporator, bypass flue evaporator enters deduster gas approach after being atomized one filtrate of concentrated water and concentrated water two and arranges
Out.
The crystals of sodium carbonate that the present embodiment obtains account for not through before processing in waste water sodium carbonate quality percent 60%.
Embodiment 2
(1) waste water waste water is transported to place in pond；
(2) waste water for placing pond by waste water is transported in reaction settling basin, and is put into sodium hydroxide in reaction settling basin
And sodium carbonate, supernatant and sludge is then obtained by filtration；
(3) supernatant that step (2) obtains is delivered in regulating tank by tubular type microfiltration equipment, and is put in regulating tank
Enter sulfuric acid, adjust PH to 8.5, the sludge that above-mentioned steps (2) obtain is delivered in sludge dewatering case, filter cake and filtrate are obtained,
Obtained filtrate is re-delivered to the waste water in step (1) to place in pond；
(4) it will be delivered in intermediate water tank by the waste water in step (3) regulating tank；
(5) step (4) being delivered to filter by the waste water of intermediate water tank, the filter inlet is connected with nanofiltration system,
Waste water is divided into sodium chloride-containing waste water and containing sodium carbonate waste water after nanofiltration system；
(6) the sulfur acid sodium waste water that step (5) obtains is delivered to concentration systems one, obtains producing water one and concentrated water one, the production
Water one is recovered, and the concentrated water one is transported in cooling crystallization tower, and crystallizing tower temperature is 1 DEG C, later will be by crystallizing tower
Concentrated water one is delivered in solid-liquid separator, is obtained one filtrate of sodium sulfate crystal and concentrated water, sodium sulfate crystal is recycled, by step
(5) the sodium chloride-containing waste water obtained is delivered to concentration systems two, obtains producing water two and concentrated water two, the production water two are recovered, institute
State concentrated water two and be transported to evaporation water tank, one filtrate of concentrated water is transported to evaporation water tank, under the action of compressed gas into
Enter bypass flue evaporator, bypass flue evaporator enters deduster gas approach after being atomized one filtrate of concentrated water and concentrated water two and arranges
Out.
The crystals of sodium carbonate that the present embodiment obtains accounts for not by 65% of sodium carbonate quality in waste water before handling.
Embodiment 3
(1) waste water waste water is transported to place in pond；
(2) waste water for placing pond by waste water is transported in reaction settling basin, and is put into sodium hydroxide in reaction settling basin
And sodium carbonate, supernatant and sludge is then obtained by filtration；
(3) supernatant that step (2) obtains is delivered in regulating tank by tubular type microfiltration equipment, and is put in regulating tank
Enter sulfuric acid, adjusts PH to 9, the sludge that above-mentioned steps (2) obtain is delivered in sludge dewatering case, filter cake and filtrate are obtained, it will
Obtained filtrate is re-delivered to the waste water in step (1) and places in pond；
(4) it will be delivered in intermediate water tank by the waste water in step (3) regulating tank；
(5) step (4) being delivered to filter by the waste water of intermediate water tank, the filter inlet is connected with nanofiltration system,
Waste water is divided into sodium chloride-containing waste water and containing sodium carbonate waste water after nanofiltration system；
(6) the sulfur acid sodium waste water that step (5) obtains is delivered to concentration systems one, obtains producing water one and concentrated water one, the production
Water one is recovered, and the concentrated water one is transported in cooling crystallization tower, and crystallizing tower temperature is 0 DEG C, later will be by crystallizing tower
Concentrated water one is delivered in solid-liquid separator, is obtained one filtrate of sodium sulfate crystal and concentrated water, sodium sulfate crystal is recycled, by step
(5) the sodium chloride-containing waste water obtained is delivered to concentration systems two, obtains producing water two and concentrated water two, the production water two are recovered, institute
State concentrated water two and be transported to evaporation water tank, one filtrate of concentrated water is transported to evaporation water tank, under the action of compressed gas into
Enter bypass flue evaporator, bypass flue evaporator enters deduster gas approach after being atomized one filtrate of concentrated water and concentrated water two and arranges
Out.
The crystals of sodium carbonate that the present embodiment obtains accounts for not by 75% of sodium carbonate quality in waste water before handling.This implementation
The mass ratio that the water of example recycling accounts for waste water is 70%.
Claims (3)
1. a kind of zero emission method of wastewater based on crystallisation by cooling and flue evaporation technique, which comprises the steps of:
(1) waste water waste water is transported to place in pond；
(2) waste water for placing pond by waste water is transported in reaction settling basin, and is put into sodium hydroxide in reaction settling basin
And sodium carbonate, supernatant and sludge is then obtained by filtration；
(3) supernatant that step (2) obtains is delivered in regulating tank by tubular type microfiltration equipment, and is put in regulating tank
Enter sulfuric acid, adjust PH to 8-9, the sludge that above-mentioned steps (2) obtain is delivered in sludge dewatering case, filter cake and filtrate are obtained,
Obtained filtrate is re-delivered to the waste water in step (1) to place in pond；
(4) it will be delivered in intermediate water tank by the waste water in step (3) regulating tank；
(5) step (4) being delivered to filter by the waste water of intermediate water tank, the filter inlet is connected with nanofiltration system,
Waste water is divided into sodium chloride-containing waste water and containing sodium carbonate waste water after nanofiltration system；
(6) the sulfur acid sodium waste water that step (5) obtains is delivered to concentration systems one, obtains producing water one and concentrated water one, the production
Water one is recovered, and the concentrated water one is transported in cooling crystallization tower, will be delivered to solid-liquid by the concentrated water one of crystallizing tower later
In separator, one filtrate of sodium sulfate crystal and concentrated water is obtained, sodium sulfate crystal is recycled, the sodium chloride-containing that step (5) is obtained
Waste water is delivered to concentration systems two, obtains producing water two and concentrated water two, the production water two are recovered, the concentrated water two is transported to steaming
Flood case, and one filtrate of concentrated water is transported to evaporation water tank, and bypass flue evaporator is entered under the action of compressed gas, other
Road flue evaporator enters deduster gas approach after being atomized one filtrate of concentrated water and concentrated water two and is discharged.
2. a kind of zero emission method of wastewater based on crystallisation by cooling and flue evaporation technique as described in claim 1, feature
Be: the evaporation tank outlet is equipped with two-fluid nozzle.
3. a kind of zero emission method of wastewater based on crystallisation by cooling and flue evaporation technique as described in claim 1, feature
Be: the temperature in the step (6) in crystallizing tower is -1-1 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810838475.6A CN108996788A (en) | 2018-07-27 | 2018-07-27 | A kind of zero emission method of wastewater based on crystallisation by cooling and flue evaporation technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810838475.6A CN108996788A (en) | 2018-07-27 | 2018-07-27 | A kind of zero emission method of wastewater based on crystallisation by cooling and flue evaporation technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108996788A true CN108996788A (en) | 2018-12-14 |
Family
ID=64598428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810838475.6A Pending CN108996788A (en) | 2018-07-27 | 2018-07-27 | A kind of zero emission method of wastewater based on crystallisation by cooling and flue evaporation technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108996788A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110304694A (en) * | 2019-06-27 | 2019-10-08 | 北京朗新明环保科技有限公司南京分公司 | A kind of novel slag moisture film treatment process and waste water reuse system |
| CN110963614A (en) * | 2019-12-27 | 2020-04-07 | 浙江德创环保科技股份有限公司 | System for extracting chloride ions and producing sodium sulfate and ammonium chloride from desulfurization wastewater |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205151986U (en) * | 2015-12-03 | 2016-04-13 | 曾永健 | Zero discharge system of coal fired power plant wet flue gas desulfurization waste water |
| CN105565573A (en) * | 2016-02-05 | 2016-05-11 | 大唐环境产业集团股份有限公司 | Device and method for desulfurization waste water zero discharge treatment |
| CN105621775A (en) * | 2016-02-05 | 2016-06-01 | 大唐环境产业集团股份有限公司 | Novel desulfurated wastewater zero-emission treatment device and method |
| CN105712557A (en) * | 2016-02-05 | 2016-06-29 | 大唐环境产业集团股份有限公司 | Desulfurization waste water zero discharging treatment device and method |
| CN205953746U (en) * | 2016-06-23 | 2017-02-15 | 南京龙源环保有限公司 | Zero discharge system of coal fired power plant waste water |
| CN106587225A (en) * | 2016-12-07 | 2017-04-26 | 浙江德创环保科技股份有限公司 | Zero discharge process for desulfurization wastewater |
-
2018
- 2018-07-27 CN CN201810838475.6A patent/CN108996788A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205151986U (en) * | 2015-12-03 | 2016-04-13 | 曾永健 | Zero discharge system of coal fired power plant wet flue gas desulfurization waste water |
| CN105565573A (en) * | 2016-02-05 | 2016-05-11 | 大唐环境产业集团股份有限公司 | Device and method for desulfurization waste water zero discharge treatment |
| CN105621775A (en) * | 2016-02-05 | 2016-06-01 | 大唐环境产业集团股份有限公司 | Novel desulfurated wastewater zero-emission treatment device and method |
| CN105712557A (en) * | 2016-02-05 | 2016-06-29 | 大唐环境产业集团股份有限公司 | Desulfurization waste water zero discharging treatment device and method |
| CN205953746U (en) * | 2016-06-23 | 2017-02-15 | 南京龙源环保有限公司 | Zero discharge system of coal fired power plant waste water |
| CN106587225A (en) * | 2016-12-07 | 2017-04-26 | 浙江德创环保科技股份有限公司 | Zero discharge process for desulfurization wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 韩朝略: "《化工小商品生产法 第一集》", 31 July 1992, 长沙：湖南科学技术出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110304694A (en) * | 2019-06-27 | 2019-10-08 | 北京朗新明环保科技有限公司南京分公司 | A kind of novel slag moisture film treatment process and waste water reuse system |
| CN110963614A (en) * | 2019-12-27 | 2020-04-07 | 浙江德创环保科技股份有限公司 | System for extracting chloride ions and producing sodium sulfate and ammonium chloride from desulfurization wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104326612B (en) | A kind of method and system reclaiming salt from Waste Water Treatment | |
| CN105540960B (en) | The processing method and system of limestone/lime-gypsum method flue gas desulfurization waste-water | |
| CN113105138B (en) | Treatment method and system for water washing and dechlorination of waste incineration fly ash and evaporation, quality separation and crystallization of water washing liquid | |
| CN106946395A (en) | A kind of method and device of desulfurization wastewater sub-prime crystallization treatment | |
| CN103420532A (en) | Processing method of sewage in oil fields by using film evaporator | |
| CN103813987A (en) | Treatment of phosphate-containing wastewater with fluorosilicate and phosphate recovery | |
| CN105314783A (en) | Coal-fired power plant desulfurization waste water zero-emission treating technology and device special for treating technology | |
| CN104140174A (en) | Combined treatment method for ammonia chloride waste water through rare earth extraction separation | |
| CN104860461A (en) | Method and device for preparing NaCl industrial salt with desulphurization waste water zero discharge | |
| CN110759571B (en) | Fly ash leachate treatment system and treatment method | |
| CN113245342B (en) | Resource treatment method and treatment system for waste incineration fly ash water washing salt making based on seed crystal method | |
| CN205575837U (en) | Processing system of lime stone / lime - gypsum method flue gas desulfurization waste water | |
| CN108996788A (en) | A kind of zero emission method of wastewater based on crystallisation by cooling and flue evaporation technique | |
| CN108218096B (en) | System and method for treating mercury-containing high-salt wastewater from chloroethylene production by calcium carbide method | |
| CN114230070A (en) | Incineration fly ash washing water recycling treatment device and method | |
| CN207862094U (en) | A kind of electroplating waste-water reutilizing and the processing system of zero-emission | |
| CN108821493A (en) | A kind of Environmentally-frielow-energy-consumptipolycarboxylic low-energy-consumptipolycarboxylic tar refining processing method of sodium sulfate wastewater containing phenol | |
| CN111484180B (en) | Waste heat method recrystallization purification mode and system for zero-emission associated crystallization salt of sewage | |
| CN108911343A (en) | Polysilicon zero emission method of wastewater and system | |
| CN205974124U (en) | Coal chemical wastewater's processing system | |
| CN205204972U (en) | Coal fired power plant desulfurization waste water zero release treatment process's isolated plant | |
| CN214167680U (en) | Coal mine water drainage system | |
| CN109607582A (en) | A kind of method and system recycling magnesium salts from desulfurization wastewater | |
| CN212222698U (en) | Industrial waste salt recrystallization purification system driven by waste heat | |
| CN111620497A (en) | Method and system for treating Enbipu pharmaceutical wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181214 |
|
| RJ01 | Rejection of invention patent application after publication |