CN205653287U - Device that zero release of desulfurization waste water was handled - Google Patents
Device that zero release of desulfurization waste water was handled Download PDFInfo
- Publication number
- CN205653287U CN205653287U CN201620117099.8U CN201620117099U CN205653287U CN 205653287 U CN205653287 U CN 205653287U CN 201620117099 U CN201620117099 U CN 201620117099U CN 205653287 U CN205653287 U CN 205653287U
- Authority
- CN
- China
- Prior art keywords
- pond
- deliming
- reverse osmosis
- water
- waste water
- 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.)
- Active
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model provides a device that zero release of desulfurization waste water was handled. Include: a removal of magnesium removes heavy pond group, the intercommunication removal of magnesium removes one of heavy pond group and removes calcium deposit pond group, the intercommunication remove a nanofiltration system of calcium deposit pond group, include an export of the dense water of a sulphate and a villaumite freshwater outlet, the dense water of sulphate export through a concentrate recirculation pipeline with remove calcium deposit pond group intercommunication, with villaumite freshwater outlet is through a multistage reverse osmosis system of concentrated conveying line intercommunication, with an evaporated crystallizer of multistage reverse osmosis system's dense water export intercommunication. Can make desulfurization waste water accord with membrane separation technique requirements such as RO through carry out the preliminary treatment to desulfurization waste water to can reduce operation and treatment cost by a wide margin.
Description
Technical field
This utility model relates to environmental protection technical field, is specifically related to the device of a kind of desulfurization wastewater zero discharge treatment.
Background technology
Coal fired power generation occupies critical role in China's energy resource supply.For environment protection, most of power plant of China in recent years
Have employed Limestone-gypsum Wet Flue Gas Desulfurization Process technology, in order to remove the sulfur dioxide in flue gas.Use aforementioned desulfurization technology can produce greatly
The desulfurization wastewater of amount, the wet desulphurization waste component of coal-burning power plant is complicated, containing high concentration suspended matter, oversaturated sulphite,
Chloride ion, sulfate and various heavy.
At present, desulfurization wastewater mainly uses chemical precipitation method to process, part index number difficulty up to standard, even if after process up to standard, due to
Substantial amounts of sulfate and muriatic existence in waste water, water outlet salinity is still up to 2%～4%, is difficult to recycling, after outer row also
Surface water and soil ecology can be caused to destroy, cause secondary pollution.Therefore, the research and development of desulfurization wastewater zero discharge treatment technology more come
More come into one's own.
Evaporative crystallization method is desulfurization wastewater Zero-discharge treating process currently mainly, and evaporative crystallization method has, and energy consumption is high, equipment is easy
The shortcoming that fouling is big with investment.And, it is the highest that evaporative crystallization method processes desulfurization wastewater cost, and ton water processing cost generally to reach
More than 60 yuan；In order to reduce processing cost, in some practice of construction, the membrane separation techniques such as RO (reverse osmosis) can be used first
Waste water carries out minimizing process, and the dense water that membrance separation produces is evaporated crystallization again, so can effectively reduce evaporative crystallization
Process load and save processing cost.But when using the membrane separation technique such as RO, need in advance desulfurization wastewater to be carried out strict pre-
Processing, owing in waste water, calcium and magnesium concentration is high, calcium sulfate is in hypersaturated state, and softening pretreatment cost can be caused high.It addition,
The mixed salt that salt is sodium chloride and sodium sulfate that evaporative crystallization produces, it is difficult to utilize, disposes difficulty.
Therefore, in order to avoid environmental pollution and recycle-water resource, in view of the shortcoming and defect that desulfurization wastewater sofening treatment cost is high,
Exploiting economy efficient desulfurization wastewater sofening treatment technology for Wet Flue Gas Desulfurization Technique field, it is critical that.
Utility model content
For the problems referred to above, the purpose of this utility model is to provide the device of a kind of desulfurization wastewater zero discharge treatment.Can be by right
Desulfurization wastewater carries out pretreatment, makes desulfurization wastewater meet the membrane separation technique requirements such as RO, and operation and place can be greatly lowered
Reason cost.
For reaching above-mentioned purpose, the concrete technical scheme that this utility model is taked is:
A kind of device of desulfurization wastewater concentration, including:
One demagging is except weight pond group；
Connect described demagging except a deliming sedimentation tank group of weight pond group；
Connect a nanofiltration system of described deliming sedimentation tank group, including a dense water out of sulfate and a villaumite water outlet, described
The dense water out of sulfate is connected with described deliming sedimentation tank group by a concentrate recirculation pipeline；
Concentrate, by one, the multi-stage reverse osmosis system that transfer pipeline connects with described villaumite water outlet；
The crystallizing evaporator connected with a dense water out of described multi-stage reverse osmosis system.
Further, described demagging includes except heavy pond group: a demagging, except weight pond, is provided with one first dosing pipe；With described demagging
Except a preliminary sedimentation tank of weight pond connection, bottom it, it is provided with one first spoil disposal pipeline.
Further, described deliming sedimentation tank group includes: the first deliming pond of be sequentially communicated, one or two deliming ponds and or two sink
Pond；First deliming pond described in described concentrate recirculation pipeline connection；Described second pond connects with a water inlet of described nanofiltration system；
Described first deliming pond is provided with one second dosing pipe；Described secondary deliming pond is provided with one the 3rd dosing pipe；Described first deliming
The bottom of pond, secondary deliming pond and second pond all with one second spoil disposal pipeline communication.
Further, a filter it is provided with between described second pond and described water inlet.
Further, described multi-stage reverse osmosis system includes first-stage reverse osmosis system and two-stage reverse osmosis system；Described one-level reverse osmosis
Permeable system uses ordinary RO membrane or sea water reverse osmosis membrane；Described two-stage reverse osmosis system uses supertension reverse osmosis membrane.
Carry out zero emission treatment of desulfured waste water based on aforementioned means, comprise the following steps:
1) desulfurization wastewater enters demagging and removes weight pond group, makes the magnesium ion in desulfurization wastewater and heavy metal ion generate hydroxide precipitation；
Obtain demagging except weight waste water；
2) demagging enters deliming sedimentation tank group except weight waste water, makes demagging remove weight waste water and makes calcium ion concentration in waste water be reduced to 10mg/L
Hereinafter, mixed salt waste water is obtained；
3) mixed salt waste water enters nanofiltration system；Mixed salt waste water is separated into the dense water of sulfate and villaumite fresh water；
4) the dense water of sulfate is at least partly back to deliming sedimentation tank group；Villaumite fresh water enters multi-stage reverse osmosis system, is distilled
Condensed water and the dense water of villaumite；The dense water of villaumite enters crystallizing evaporator, obtains evaporation condensed water and can reuse salt.
Further, step 1) desulfurization wastewater enters demagging except weight pond group, makes the magnesium ion in desulfurization wastewater and heavy metal ion
Generate hydroxide precipitation to include:
1-1) desulfurization wastewater enters demagging and removes weight pond, to demagging except adding calcium hydroxide and organic sulfur in weight pond, controls pH in pond
It is 9～12, obtains demagging except weight waste water；
1-2) demagging enters preliminary sedimentation tank except weight waste water, carries out mud-water separation, obtains primary sludge and low concentration wastewater.
Further, step 2) demagging enters deliming sedimentation tank group except weight waste water, and make demagging remove weight waste water and make calcium ion in waste water
Concentration is reduced to below 10mg/L, including:
2-1) low concentration wastewater enters first deliming pond, sulfate in first deliming pond, makes calcium ion concentration in low concentration wastewater
It is reduced to 300～800mg/L, obtains first deliming waste water；
2-2) first deliming waste water enters secondary deliming pond, adds carbonate, flocculant and flocculation aid to secondary deliming pond, makes to give up
In water, remaining calcium ion generates precipitation of calcium carbonate, obtains secondary deliming waste water；
2-3) secondary deliming waste water enters second pond, carries out precipitation clarification, makes calcium ion concentration in secondary deliming waste water be reduced to
Below 10mg/L.
Further, step 4) in the dense water of sulfate at least partly carry out flue evaporation process and/or be back to a desulfuration absorbing tower.
By taking technique scheme, sulfate can do deliming with reuse and process, and villaumite passes through multi-stage reverse osmosis and evaporative crystallization
Process, two kinds of salinity other places reason, have that added amount of chemical is few, operating cost is low, produce that water water quality is good, be prone to and other technique phases
In conjunction with and advantage that Nacl side-product can be reclaimed.Additionally, it is Membrane Materials system thermal that this utility model may utilize residual heat of electric power plant
Source, is possible not only to effectively reduce system operation cost, can reduce flue-gas temperature simultaneously, reduces water consumption in desulfuration absorbing tower,
And reduce to environmental emission heat.
Accompanying drawing explanation
Fig. 1 is the layout schematic diagram of desulfurization wastewater zero discharge treatment device in this utility model one embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clear,
Complete description, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.
Based on the embodiment in this utility model, the institute that those of ordinary skill in the art are obtained under not making creative work premise
There are other embodiments, broadly fall into the scope of this utility model protection.Coordinate institute's accompanying drawing to feature and advantage of the present utility model below
Elaborate.
As it is shown in figure 1, in one embodiment, it is provided that the device of a kind of desulfurization wastewater concentration, including demagging remove weight pond 1,
Agitating device 2, spoil disposal pipeline 3, preliminary sedimentation tank 4, first deliming pond 5, agitating device 6, secondary deliming pond 7, agitating device 8,
Second pond 9, spoil disposal pipeline 10, water pump 11, filter 12, nanofiltration system 13, concentrate recirculation pipeline 14, concentrated water discharge pipe
Road 15, intermediate pool 16, water pump 17, first-stage reverse osmosis 18, two-pass reverse osmosis 19 and crystallizing evaporator 20.
Wherein, demagging is equipped with agitating device except weight pond 1, first deliming pond 5, secondary deliming pond 7, demagging except weight pond 1, just
Heavy pond 4, deliming pond 5, secondary deliming pond 7, second pond 9 are equipped with sludge bucket and spoil disposal pipeline.
Demagging shares spoil disposal pipeline 3 except weight pond 1 and preliminary sedimentation tank 4, and described deliming pond 5, secondary deliming pond 7, second pond 9 share
Spoil disposal pipeline 10.
Filter is more medium filter, it is to avoid in waste water, remaining levitation thing affects subsequent film distillation operation.Select ultrafiltration or microfiltration
System.
First-stage reverse osmosis system 18, can use ordinary RO membrane or sea water reverse osmosis membrane.Two-stage reverse osmosis system 19 is adopted
Use supertension reverse osmosis membrane.
When utilizing said apparatus to carry out desulfurization wastewater zero discharge treatment, desulfurization wastewater initially enters demagging and removes weight pond, in reaction tank
Adding calcium hydroxide and organic sulfur, in control reactor, pH is 9～12, makes the magnesium in waste water and major part heavy metal generate hydrogen-oxygen
Compound precipitates, and the hydrargyrum in waste water generates sulfide precipitation, thus removes the heavy metal such as magnesium hardness and lead, zinc, chromium and hydrargyrum in waste water.
For strengthening subsequent mud-water separation effect, can be to demagging except weight pond adds flocculant and flocculation aid；
Waste water, after magnesium is except weight, enters preliminary sedimentation tank, and after mud-water separation, in preliminary sedimentation tank water outlet, magnesium density is reduced to 15mg/L
Hereinafter, heavy metal realizes qualified discharge, and preliminary sedimentation tank produces mud with demagging except the further thickening of mud of weight pond generation processes,
Final security landfill is disposed；Preliminary sedimentation tank supernatant enters deliming pond, and adding medicament B, medicament B in deliming pond is sulfate,
It is preferably sodium sulfate, by increasing sulfate radical in waste water concentration, makes oversaturated calcium sulfate in waste water separate out, thus reach to remove
The purpose of part calcium ion, in waste water, sodium sulfate dosage is 0.01～0.3mol/L, makes calcium ion concentration in waste water be reduced to
300～800mg/L；
In deliming pond, waste water enters secondary deliming pond, and adds combination medicament carbonate, flocculant and flocculation aid, by combination medicine
Agent C adds, and carbonate is preferably sodium carbonate；Make remaining calcium ion in waste water generate precipitation of calcium carbonate, be simultaneously introduced flocculation
Agent and flocculation aid improve sludge settling performance；
In secondary deliming pond, waste water enters second pond, after precipitation clarification, makes calcium ion concentration in waste water be reduced to 10mg/L
Hereinafter, the mud that second pond, deliming pond, secondary deliming pond produce is discharged into gypsum dehydration machine by spoil disposal pipeline and carries out processed,
Comprehensively utilize as gypsum by-product；
Wastewater pH, by adding hydrochloric acid, is adjusted to 6～8, is then entering filter by water pump, entering by the supernatant of second pond
One step removes the float in waste water；
Filter can use more medium filter；
Filter can use ultrafiltration or microfiltration filtration system；
Filter water outlet enters nanofiltration system, by point salt action of nanofiltration, makes the divalent ions such as sulfate radical in waste water and chloride ion
Separating Deng monovalent ion, sulfate (predominantly sodium sulfate) the dense water that nanofiltration system produces, a part is back to deliming pond, carries
For sodium sulfate as softening medicament, another part remains the then condensing crystallizing process further of dense water；
Another part remains dense water and carries out flue evaporation process, is sprayed into by sodium sulfate dope in cleaner unit front end smoke canal, through high temperature
After flue gas gasification, inorganic salt in dense water forms solid crystal, then by during follow-up cleaner unit by cleaner unit with the shape of dirt
Formula captures；
Another part residue concentrate recirculation is in desulfurizing tower；
The fresh water containing chloride ion that nanofiltration system produces enters intermediate pool, then under the effect of water pump, useless in intermediate pool
Water enters first-stage reverse osmosis, and waste water salinity is concentrated into more than 4%, and the dense water that first-stage reverse osmosis produces enters two-pass reverse osmosis system
System, by Waste water concentrating to salinity more than 10%；
The dense water that two-pass reverse osmosis produces enters crystallizing evaporator, produces sodium chloride crystal salt by evaporative crystallization, as Nacl
Selling outward, clear water and the distilled water of crystallizing evaporator generation that first-stage reverse osmosis, two-pass reverse osmosis produce are back to power plant water.
Finally realize the zero discharge treatment of desulfurization wastewater.
As a example by a Practical Project, take certain power plant desulfurization waste water, initially enter demagging and remove weight pond, open agitating device, to reaction
Adding calcium hydroxide and organic sulfur in pond, in control reactor, pH is about 11.5, makes the magnesium in waste water and major part heavy metal
Generation hydroxide precipitates, and the hydrargyrum in waste water generates sulfide precipitation, and then waste water enters preliminary sedimentation tank, at the beginning of after mud-water separation
In sinking pool effluent, magnesium density is reduced to below 15mg/L, and heavy metal realizes qualified discharge, and preliminary sedimentation tank produces mud with demagging except weight
The further thickening of mud that pond produces processes, and final security landfill is disposed.
Preliminary sedimentation tank supernatant enters deliming pond, adds sodium sulfate in deliming pond, and dosage is 0.1mol/L, useless by increasing
Sulfate concentration in water, makes oversaturated calcium sulfate in waste water separate out, thus reaches to remove the purpose of part calcium ion, in waste water
The dosage of sodium sulfate is 0.01～0.3mol/L, makes calcium ion concentration in waste water be reduced to about 500mg/L by 2500mg/L.
Then waste water enters secondary deliming pond, adds sodium carbonate, flocculant and flocculation aid, make remaining calcium ion in waste water in waste water
Generating precipitation of calcium carbonate, be simultaneously introduced flocculant and flocculation aid improves sludge settling performance, waste water enters second pond, through precipitation
After clarification, calcium ion concentration in waste water is made to be reduced to below 10mg/L, the dirt that second pond, deliming pond, secondary deliming pond produce
Mud is discharged into gypsum dehydration machine and carries out processed, comprehensively utilizes as gypsum by-product.
Wastewater pH, by adding hydrochloric acid, is pulled back to 6～8, is then entering filter by water pump by the supernatant of second pond,
Remove the float in waste water further.Filter water outlet enters nanofiltration system, by point salt action of nanofiltration, makes sulfur in waste water
The monovalent ions such as the divalent ions such as acid group and chloride ion separate, sulfate (predominantly sodium sulfate) the dense water that nanofiltration system produces,
A part is back to deliming pond, it is provided that sodium sulfate is as softening medicament, and another part remains the then condensing crystallizing process further of dense water；
The fresh water containing chloride ion that nanofiltration system produces enters intermediate pool, and subsequently into next stage counter-infiltration system, one-level is anti-
Permeate dense water entrance two-stage reverse osmosis system and carry out secondary concentration, by two-pass RO system, Waste water concentrating is more than to salinity
10%, it is evaporated crystallization treatment subsequently into crystallizing evaporator, produces condensed water and sodium chloride crystal salt, crystal salt is as industry
Salt is sold outward, and the fresh water that condensed water and counter-infiltration system produce is used in power plant process as recycle-water, preferentially as boiler feedwater
Use.
Through adjusting, ton water processing cost is about 25 yuan；Relatively prior art significantly declines, and multi-products produce water can with reuse,
Additional income can be increased or reduce respective handling cost.
Claims (5)
1. the device of a desulfurization wastewater concentration, it is characterised in that including:
One demagging is except weight pond group；
Connect described demagging except a deliming sedimentation tank group of weight pond group；
Connecting a nanofiltration system of described deliming sedimentation tank group, including a dense water out of sulfate and a villaumite water outlet, the dense water out of described sulfate is connected with described deliming sedimentation tank group by a concentrate recirculation pipeline；
Concentrate, by one, the multi-stage reverse osmosis system that transfer pipeline connects with described villaumite water outlet；
The crystallizing evaporator connected with a dense water out of described multi-stage reverse osmosis system.
2. the device of desulfurization wastewater concentration as claimed in claim 1, it is characterised in that described demagging includes except weight pond group: a demagging, except weight pond, is provided with one first dosing pipe；The preliminary sedimentation tank connected except weight pond with described demagging, is provided with one first spoil disposal pipeline bottom it.
3. the device of desulfurization wastewater concentration as claimed in claim 1, it is characterised in that described deliming sedimentation tank group includes: the first deliming pond of be sequentially communicated, one or two deliming ponds and a second pond；First deliming pond described in described concentrate recirculation pipeline connection；Described second pond connects with a water inlet of described nanofiltration system；Described first deliming pond is provided with one second dosing pipe；Described secondary deliming pond is provided with one the 3rd dosing pipe；The bottom of described first deliming pond, secondary deliming pond and second pond all with one second spoil disposal pipeline communication.
4. the device of desulfurization wastewater concentration as claimed in claim 3, it is characterised in that be provided with a filter between described second pond and described water inlet.
5. the device of desulfurization wastewater concentration as claimed in claim 1, it is characterised in that described multi-stage reverse osmosis system includes first-stage reverse osmosis system and two-stage reverse osmosis system；Described first-stage reverse osmosis system uses ordinary RO membrane or sea water reverse osmosis membrane；Described two-stage reverse osmosis system uses supertension reverse osmosis membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620117099.8U CN205653287U (en) | 2016-02-05 | 2016-02-05 | Device that zero release of desulfurization waste water was handled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620117099.8U CN205653287U (en) | 2016-02-05 | 2016-02-05 | Device that zero release of desulfurization waste water was handled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205653287U true CN205653287U (en) | 2016-10-19 |
Family
ID=57356093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620117099.8U Active CN205653287U (en) | 2016-02-05 | 2016-02-05 | Device that zero release of desulfurization waste water was handled |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205653287U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106430829A (en) * | 2016-10-26 | 2017-02-22 | 南宁市桂润环境工程有限公司 | Lead and zinc industrial wastewater treatment device and method |
| WO2017133514A1 (en) * | 2016-02-05 | 2017-08-10 | 大唐环境产业集团股份有限公司 | Treatment apparatus and method for softening desulfurization wastewater |
| CN107265696A (en) * | 2017-07-12 | 2017-10-20 | 大唐环境产业集团股份有限公司 | A kind of desulfurization wastewater sofening treatment device and method |
| CN108423903A (en) * | 2018-02-27 | 2018-08-21 | 四川美富特水务有限责任公司 | Dyeing waste water zero-discharge treatment system |
-
2016
- 2016-02-05 CN CN201620117099.8U patent/CN205653287U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2017133514A1 (en) * | 2016-02-05 | 2017-08-10 | 大唐环境产业集团股份有限公司 | Treatment apparatus and method for softening desulfurization wastewater |
| WO2017133511A1 (en) * | 2016-02-05 | 2017-08-10 | 大唐环境产业集团股份有限公司 | Treatment apparatus and method for zero liquid discharge of desulfurization wastewater |
| CN105565573B (en) * | 2016-02-05 | 2019-01-25 | 大唐环境产业集团股份有限公司 | The device and method of desulfurization wastewater zero discharge treatment |
| CN106430829A (en) * | 2016-10-26 | 2017-02-22 | 南宁市桂润环境工程有限公司 | Lead and zinc industrial wastewater treatment device and method |
| CN107265696A (en) * | 2017-07-12 | 2017-10-20 | 大唐环境产业集团股份有限公司 | A kind of desulfurization wastewater sofening treatment device and method |
| CN108423903A (en) * | 2018-02-27 | 2018-08-21 | 四川美富特水务有限责任公司 | Dyeing waste water zero-discharge treatment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105565573B (en) | The device and method of desulfurization wastewater zero discharge treatment | |
| CN105712557B (en) | A kind of desulfurization wastewater zero discharge treatment device and method | |
| CN104355473B (en) | A kind of method using electrodialytic technique to carry out power plant desulfurization waste water desalination zero discharge treatment | |
| CN105621742B (en) | Desulfurization wastewater sofening treatment device and method | |
| CN205556348U (en) | Desulfurization waste water zero release processing apparatus | |
| CN205653287U (en) | Device that zero release of desulfurization waste water was handled | |
| CN107337292B (en) | Process flow for deeply treating desulfurization wastewater | |
| CN105439358A (en) | Method and device for realizing zero discharge of desulfurization wastewater | |
| CN104591459B (en) | A kind of sodium saponification waste-water soda acid recycling treatment process | |
| CN105540960A (en) | Treatment method and treatment system for wastewater produced during flue gas desulfurization adopting limestone/lime-gypsum method | |
| CN107758962A (en) | A kind of system of the preparing magnesium sulfate from desulfurization wastewater | |
| CN203878018U (en) | Desulfurization wastewater recycling and zero-discharge system | |
| CN103102027B (en) | Sewage treatment system and method for solar cell production | |
| CN202924865U (en) | Membrane-process treatment recycling system for desulfurization waste water | |
| CN205556349U (en) | Novel zero release of desulfurization waste water is handled device | |
| CN205575837U (en) | Processing system of lime stone / lime - gypsum method flue gas desulfurization waste water | |
| CN107721037A (en) | A kind of high ammonia nitrogen desulfurization wastewater processing up to standard and reclaiming system and method | |
| CN110937728A (en) | Desulfurization wastewater treatment method and system | |
| CN107285489A (en) | A kind of device and method of desulfurization wastewater pretreatment | |
| CN105621775A (en) | Novel desulfurated wastewater zero-emission treatment device and method | |
| CN214570785U (en) | System for extracting magnesium sulfate and sodium chloride from desulfurization wastewater | |
| CN107055886B (en) | A kind of depth graded divides salt technique | |
| CN205635216U (en) | Concentrated processing apparatus of desulfurization waste water | |
| CN205616698U (en) | Desulfurization waste water zero release processing system | |
| CN205556299U (en) | Desulfurization waste water softens processing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |