CN206570143U - A kind of desulfurization wastewater is recycled and Zero discharging system - Google Patents
A kind of desulfurization wastewater is recycled and Zero discharging system Download PDFInfo
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- CN206570143U CN206570143U CN201621423165.0U CN201621423165U CN206570143U CN 206570143 U CN206570143 U CN 206570143U CN 201621423165 U CN201621423165 U CN 201621423165U CN 206570143 U CN206570143 U CN 206570143U
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- desulfurization wastewater
- recycled
- water
- discharging system
- zero discharging
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Abstract
The utility model provides a kind of desulfurization wastewater and recycled and Zero discharging system, including：The pretreatment softening component being sequentially connected, a film thickening apparatus and an evaporative crystallization component；The pretreatment softening component, to remove suspension and heavy metal in desulfurization wastewater, and reduces desulfurization wastewater hardness, obtains sofening treatment water；The film thickening apparatus, to carry out concentration to sofening treatment water, it includes：The tubular type Microfiltration Unit being sequentially connected or a tubular type ultra filtration unit, to carry out film thickening filtration to soft processing water；One high pressure reverse osmosis units, to through film thickening filtration sofening treatment water carry out reverse-osmosis treated, obtain can reuse fresh water and concentrated water；The evaporative crystallization component, crystallized product is obtained to be evaporated crystallization to concentrated water.A series of processing such as decrement, evaporative crystallization are concentrated by pretreatment, film, the most of reuse of waste water, small part is finally reached and crystallizes into salt, be finally reached the purpose of zero-emission.
Description
Technical field
The utility model belongs to industrial wastewater and resource circulation utilization technical field, and in particular to a kind of desulfurization wastewater is reclaimed
Using and Zero discharging system.
Background technology
Power plants majority uses Limestone-gypsum Wet Flue Gas Desulfurization Process technology, for removing the sulfur dioxide in flue gas.For
The chlorine ion concentration in desulfurization slurry is maintained, it is necessary to periodically discharge desulfurization wastewater, desulfurization wastewater complicated component, suspension, chlorine
Ion, sulfate radical, calcium ions and magnesium ions, content of beary metal are higher, and salt content is typically in more than 30000mg/L, and chloride ion content exists
More than 10000mg/L, contaminative is strong, is a kind of most intractable industrial wastewater of thermal power plant.Current desulfurization wastewater conventional treatment side
Formula is three headers joint depositing reservoir, adds chemicals, goes oil removal, a part of hardness, but water outlet salt content is not reduced,
It can not recycle, it is also difficult to reach that outer row requires.With tightening up for national environmental protection policy, the exclusive requirement to thermal power plant is more next
It is stricter, it is therefore necessary to which that desulfurization wastewater is further processed.
Utility model content
For existing situation, the utility model provides a kind of desulfurization wastewater and recycled and Zero discharging system, by pre-
A series of processing such as processing, film concentration decrement, evaporative crystallization, are finally reached the most of reuse of waste water, small part and crystallize into salt, most
The purpose of zero-emission is reached eventually.
In order to achieve the above object, the concrete technical scheme of the utility model use is：
A kind of desulfurization wastewater is recycled and Zero discharging system, including：
The pretreatment softening component being sequentially connected, a film thickening apparatus and an evaporative crystallization component；
The pretreatment softening component, to remove suspension and heavy metal in desulfurization wastewater, and reduces desulfurization wastewater
Hardness, obtains sofening treatment water；
The film thickening apparatus, to carry out concentration to sofening treatment water, it includes：The tubular type being sequentially connected is micro-
Unit or a tubular type ultra filtration unit are filtered, to carry out film thickening filtration to soft processing water；One high pressure reverse osmosis units, to right
Sofening treatment water through film thickening filtration carries out reverse-osmosis treated, and acquisition can reuse fresh water and concentrated water；
The evaporative crystallization component, crystallized product is obtained to be evaporated crystallization to concentrated water.
Further, the pretreatment softening component includes：The preliminary sedimentation tank that is sequentially connected, an aeration tank, an one-level are anti-
Answer case, an one-level depositing reservoir, a second order reaction case, one or two grades of depositing reservoirs；Also include and the one-level depositing reservoir, two grades of depositing reservoirs
The connected sludge dewatering system in bottom.
Further, the first order reaction case is attached to one first chemicals dosing plant, to feeding lime breast, NaOH and coagulation
Agent；The second order reaction case is attached to one second chemicals dosing plant, to add sodium carbonate.
Further, the high pressure reverse osmosis units use disc tube reverse osmosis (dt-ro) (DTRO) or the wide runner counter-infiltration of high pressure
(STRO)。
Further, the evaporative crystallization component includes an evaporator and a crystallizer；The concentrated water outlet of the evaporator
It is connected with crystallizer.
Further, the one-level depositing reservoir, the bottom of two grades of depositing reservoirs are taper mud-removing bucket, respectively a piece spoil disposal of connection
Pipe, is connected to the sludge dewatering system.
Further, the sludge dewatering system includes sludge pump, sludge dewatering equipment, rinse-system；Sludge dewatering type
Formula is selected from centrifugal dehydrator or plate and frame filter press.
Further, the membrane structure of the tubular type Microfiltration Unit uses integrated film structure, and material is PP polypropylene.
Further, the membrane structure of the tubular type Microfiltration Unit makes stream under high flow rate current (cross-flow flow velocity 3-5m/s)
The form of turbulent flow is presented in body.
Further, the evaporator is selected from multi-effect forced circulation evaporation system (forced circulation MED), Horizental showering machinery
Vapor-compression evaporation system (horizontal MVC), standpipe falling liquid film function of mechanical steam recompression vapo(u)rization system (standpipe MVR).
The utility model is pre-processed by two-stage depositing reservoir, film concentrates a series of purified treatments such as decrement, evaporative crystallization,
Suspension, hardness, chlorion, sulfate radical, sodium ion and heavy metal in waste water etc. can be removed, fresh-water recovery rate reaches
60%~70%, it is really achieved the zero-emission required in country or industry.
Brief description of the drawings
Fig. 1 is the composition schematic diagram of desulfurization wastewater recycling and Zero discharging system in the embodiment of the utility model one.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clear, complete description.
As shown in figure 1, the utility model includes pretreatment softening component 100, film thickening apparatus 200 and the steaming being sequentially connected
Hair crystallization component 400.
Pretreatment softening component 100 includes：Preliminary sedimentation tank 101, aeration tank 102, first order reaction case 103, one-level depositing reservoir
104th, second order reaction case 105, two grades of depositing reservoirs 106, in addition to be used as the plate and frame filter press 107 of sludge dewatering system；Desulfurization is given up
Water enters film thickening apparatus 200 after the pretreatment softening of two-stage depositing reservoir, and film thickening apparatus 200 includes tubular type Microfiltration Unit 201
Or tubular type ultrafiltration (not shown), high pressure reverse osmosis units 202；The fresh water that high pressure reverse osmosis units 202 are produced passes through reuse pipeline
203, which are connected to recovery pond 300, recycles, and concentrated water enters evaporative crystallization component 400 by concentrated water pipeline 204；Evaporative crystallization
Component 400 includes evaporator 401, crystallizer 402.
The desulfurization wastewater that plant area produces enters desulfurization wastewater system preliminary sedimentation tank 101, and solid-liquid point is carried out to bulky grain suspension
From the mud of concentration is removed by the subsidiary automatic mud scraping device of preliminary sedimentation tank, and supernatant flow to aeration tank 102 certainly.
In aeration tank 102, desulfurization wastewater is fully aerated by the aerator for being arranged in bottom of pond, waste water in reduction pond
COD value after, waste water is delivered to first order reaction case 103 by waste water lifting pump.
In first order reaction case 103, NaOH is added by liquid caustic soda chemicals dosing plant, by wastewater pH adjust to 11.2 or so there is provided
Hydroxyl emphasis formation Mg (OH)2Precipitation, and part heavy metal precipitation is got off.
In first order reaction case 103, by lime milk feeding device feeding lime breast, by most of HCO3 -Remove, and adjust
PH, and reduce NaOH dosages.
In one-level depositing reservoir 104, organic sulfur TMT is added by organic sulfur chemicals dosing plant, further precipitation can not pass through
The heavy metal ion that hydroxide precipitates.
In one-level depositing reservoir 104, by coagulant drug-adding device, flocculate is generated, in depositing reservoir or inlet pipeline
In can be chosen whether according to process requirements add high-molecular polyelectrolyte as flocculation aid, become much larger flocculate, more hold
Easily precipitation, can precipitate in depositing reservoir, separate.
In one-level depositing reservoir 104, the CaCO that will be produced in first order reaction case 1033、Mg(OH)2And heavy metal precipitation thing
Be deposited on the bottom of one-level depositing reservoir 104 under gravity Deng floccule body, the bottom of one-level depositing reservoir 104 be with certain slope,
Center lowest part is sludge hopper, and floccule body forms body refuse by the mud scraper rotated at a slow speed, and is stored in sludge hopper.One-level is clear
Clear pond 104 clear water then rises to top and flow to water aeration tank certainly by annular triangle downflow weir.Body refuse passes through dirt in sludge hopper
Mud pipeline 108 is pumped into automatic plate frame press filter 107 (in other embodiments, can select centrifugal dehydrator) by body refuse conveying and entered
Row desliming process, the outward transport of solid phase mud cake, then flow to aeration tank reenters system to liquid phase certainly.
In second order reaction case 105, sodium carbonate is added by sodium carbonate chemicals dosing plant, precipitation of calcium carbonate is formed.
In two grades of depositing reservoirs 106, the CaCO that will be produced in reaction chamber3Remove, remove simultaneously Deng sediment formation body refuse
Part COD, principle is with one-level depositing reservoir.Clear water calcium concentration is reduced to below 40mg/L after clarification
Clear water after clarification enters tubular type Microfiltration Unit 201 by delivery pump and (in other embodiments, can select tubular type to surpass
Filter unit), filtering accuracy is got over 0.01~0.20um cross-flow filtrations and the tiny particles content in waste water is separated using micropore,
And tubular type micro-filtration can bear higher sludge concentration and pH value range.In high flow rate current (cross-flow flow velocity 3-5m/s), fluid
The form of turbulent flow is presented, the solid particle being rejected by will not rest on the surface of film, but certain rush is played on film surface
Brush is acted on, it is to avoid pollutant is in film superficial residence.Even if pollutant is attached to film surface after operation a period of time, it can also pass through
Backwash and come off.Produce water after excessively stream to can be used for rinsing, concentrated water then enters next step high pressure counter-infiltration.
Tubular type micro-filtration or tubular type ultrafiltration backwash, in order to prevent quickly blocking or dirty stifled film, per 20-40min (according to reality
Border operation is determined) backwashed with vacuum compression air and clean production aquapulse formula, so as to force in fenestra or film surface
Tamper is returned in sludge stream.The system rate of recovery is more than 90%, goes out water pollution index SDI less than 3, hardness is less than 0.1mmol/L,
Turbidity is less than 0.1NTU.
Tubular type micro-filtration or tubular type ultrafiltration Chemical cleaning, by producing water-carrying capacity continuous monitoring, if flow it is low arrive predetermined value when,
Film is to need Chemical cleaning.Passing first into fresh water will rinse well in pipe, then acidic cleaning solution is used for cleaning inorganic foulants, alkali
Property cleaning fluid be used for organics removal.
Tubular type micro-filtration concentrated water sends into DTRO or STRO by high-pressure pump, and pressure is between 90~120bar, and pressure is up to
To 160bar, big flow circulating pump meets the flow rates demand of film surface, and waste water intermediate ion composition is trapped within concentrated water side, transmission it is light
Water can meet reuse requirement, and fresh water enters reuse pool, and TDS is less than 1000mg/L, and concentrated water TDS is more than 150000mg/L.It is dense
It is sodium ion, chlorion, sulfate ion etc. that water, which enters main component in evaporator system, concentrated water, and the rate of recovery of fresh water reaches
60%~70%.
Evaporative crystallization component 400 includes evaporator 401, crystallizer 402；Concentrated water outlet and the crystallizer 402 of evaporator 401
It is connected, the salt constantly crystallized out in crystallizer 402 is brilliant.Magma after crystallized device concentration drains into centrifugal dehydrator, and filtrate is returned
Crystallizer separation chamber is flow to, crystallization salt-cake is discharged into drying equipment, and outward transport of packing.
Evaporator, crystallizer, are the equipment by film process concentrated water by high temperature evaporation, and pattern can select multiple-effect forced circulation
Vapo(u)rization system (forced circulation MED), Horizental showering mechanical steam compression evaporating system (horizontal MVC), standpipe falling liquid film mechanical vapour
Recompression evaporation system (standpipe MVR) etc..After pervaporation, most of water is separated in waste water, and crystallization obtains salt, isolates
The salt come is mainly sodium chloride, sodium sulphate, then carries out outward transport disposal.The condensate liquid that steam is produced is back to recovery pond, can
For plant area's reuse, the rate of recovery of fresh water reaches more than 60%.
The desulfurization wastewater handled by the system will not arrange any waste water outside, reach the effect that water resource is recycled, and meet
National environmental protection policy requirements.
Obviously, described embodiment is only a part of embodiment of the utility model, rather than whole embodiments.It is based on
Embodiment in the utility model, it is all that those of ordinary skill in the art are obtained under the premise of creative work is not made
Other embodiment, belongs to the scope of the utility model protection.
Claims (10)
1. a kind of desulfurization wastewater is recycled and Zero discharging system, it is characterised in that including：
The pretreatment softening component being sequentially connected, a film thickening apparatus and an evaporative crystallization component；
The pretreatment softening component, to remove suspension and heavy metal in desulfurization wastewater, and reduces desulfurization wastewater hardness,
Obtain sofening treatment water；
The film thickening apparatus, to carry out concentration to sofening treatment water, it includes：The tubular type micro-filtration list being sequentially connected
Member or a tubular type ultra filtration unit, to carry out film thickening filtration to soft processing water；One high pressure reverse osmosis units, to through film
The sofening treatment water of thickening filtration carries out reverse-osmosis treated, and acquisition can reuse fresh water and concentrated water；
The evaporative crystallization component, crystallized product is obtained to be evaporated crystallization to concentrated water.
2. desulfurization wastewater as claimed in claim 1 is recycled and Zero discharging system, it is characterised in that the pretreatment softening
Component includes：The preliminary sedimentation tank that is sequentially connected, an aeration tank, a first order reaction case, an one-level depositing reservoir, a second order reaction case,
One or two grades of depositing reservoirs；Also include the sludge dewatering system being connected with the one-level depositing reservoir, two grades of depositing reservoir bottoms.
3. desulfurization wastewater as claimed in claim 2 is recycled and Zero discharging system, it is characterised in that the first order reaction case
One first chemicals dosing plant is attached to, to feeding lime breast, NaOH and coagulant；The second order reaction case is attached to one second and added
Medicine device, to add sodium carbonate.
4. desulfurization wastewater as claimed in claim 2 is recycled and Zero discharging system, it is characterised in that the one-level clarification
Pond, the bottom of two grades of depositing reservoirs are taper mud-removing bucket, and respectively a piece discharge pipeline of connection, is connected to the sludge dewatering system.
5. desulfurization wastewater as claimed in claim 4 is recycled and Zero discharging system, it is characterised in that the sludge dewatering system
System includes sludge pump, sludge dewatering equipment, rinse-system；The pattern of sludge dewatering equipment is selected from centrifugal dehydrator or plate and frame filter press.
6. desulfurization wastewater as claimed in claim 1 is recycled and Zero discharging system, it is characterised in that the high pressure counter-infiltration
Unit uses disc tube reverse osmosis (dt-ro) or the wide runner counter-infiltration of high pressure.
7. desulfurization wastewater as claimed in claim 1 is recycled and Zero discharging system, it is characterised in that the evaporative crystallization group
Part includes an evaporator and a crystallizer；The concentrated water outlet of the evaporator is connected with crystallizer.
8. desulfurization wastewater as claimed in claim 7 is recycled and Zero discharging system, it is characterised in that the evaporator is selected from
Multi-effect forced circulation evaporation system, Horizental showering mechanical steam compression evaporating system, the evaporation of standpipe falling liquid film function of mechanical steam recompression
System.
9. desulfurization wastewater as claimed in claim 1 is recycled and Zero discharging system, it is characterised in that the tubular type micro-filtration list
The membrane structure of member uses integrated film structure, and material is PP polypropylene.
10. desulfurization wastewater as claimed in claim 1 is recycled and Zero discharging system, it is characterised in that the tubular type micro-filtration
The membrane structure of unit makes fluid that the form of turbulent flow is presented under high flow rate current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621423165.0U CN206570143U (en) | 2016-12-23 | 2016-12-23 | A kind of desulfurization wastewater is recycled and Zero discharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621423165.0U CN206570143U (en) | 2016-12-23 | 2016-12-23 | A kind of desulfurization wastewater is recycled and Zero discharging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206570143U true CN206570143U (en) | 2017-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201621423165.0U Expired - Fee Related CN206570143U (en) | 2016-12-23 | 2016-12-23 | A kind of desulfurization wastewater is recycled and Zero discharging system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902826A (en) * | 2017-11-06 | 2018-04-13 | 新疆环境工程技术有限责任公司 | A kind of power plant desulfurization wastewater zero-discharge treatment system and method |
| CN107915354A (en) * | 2018-01-04 | 2018-04-17 | 江苏科行环保科技有限公司 | A kind of desulfurization wastewater zero-emission and resource utilization device and method |
| CN108409018A (en) * | 2018-05-15 | 2018-08-17 | 上海奕茂环境科技有限公司 | The online desalination of dangerous waste incineration flue gas washes and reclaiming system and method |
| CN108947079A (en) * | 2018-09-21 | 2018-12-07 | 华电水务工程有限公司 | A kind of hot compression zero emission treatment of desulfured waste water and system |
| CN109607925A (en) * | 2019-01-23 | 2019-04-12 | 成都锐思环保技术股份有限公司 | A kind of method for treating desulfurized wastewater can produce qualified salt product |
| CN109761391A (en) * | 2019-01-16 | 2019-05-17 | 广州环投设计研究院有限公司 | A kind of burning power plant wet process depickling wastewater treatment method |
| CN110228891A (en) * | 2019-07-22 | 2019-09-13 | 四川省川南酿造有限公司 | A kind of preparation method of brine waste MVR condensing crystallizing |
| CN111875135A (en) * | 2020-07-08 | 2020-11-03 | 江苏圣富利环境工程有限公司 | Zero-discharge treatment process for electroplating wastewater |
| CN113023998A (en) * | 2021-04-14 | 2021-06-25 | 吉林省铸洁环保有限责任公司 | Desulfurization waste water zero release processing system based on bypass flue evaporation |
| CN113800704A (en) * | 2021-11-17 | 2021-12-17 | 浙江晟格生物科技有限公司 | Ion exchange resin regeneration activation wastewater distillation concentration treatment method |
| WO2022142181A1 (en) * | 2020-12-28 | 2022-07-07 | 国网河北省电力有限公司电力科学研究院 | Desulfurization wastewater zero-discharge device and system |
-
2016
- 2016-12-23 CN CN201621423165.0U patent/CN206570143U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902826A (en) * | 2017-11-06 | 2018-04-13 | 新疆环境工程技术有限责任公司 | A kind of power plant desulfurization wastewater zero-discharge treatment system and method |
| CN107915354A (en) * | 2018-01-04 | 2018-04-17 | 江苏科行环保科技有限公司 | A kind of desulfurization wastewater zero-emission and resource utilization device and method |
| CN108409018A (en) * | 2018-05-15 | 2018-08-17 | 上海奕茂环境科技有限公司 | The online desalination of dangerous waste incineration flue gas washes and reclaiming system and method |
| CN108947079A (en) * | 2018-09-21 | 2018-12-07 | 华电水务工程有限公司 | A kind of hot compression zero emission treatment of desulfured waste water and system |
| CN109761391A (en) * | 2019-01-16 | 2019-05-17 | 广州环投设计研究院有限公司 | A kind of burning power plant wet process depickling wastewater treatment method |
| CN109607925A (en) * | 2019-01-23 | 2019-04-12 | 成都锐思环保技术股份有限公司 | A kind of method for treating desulfurized wastewater can produce qualified salt product |
| CN110228891A (en) * | 2019-07-22 | 2019-09-13 | 四川省川南酿造有限公司 | A kind of preparation method of brine waste MVR condensing crystallizing |
| CN111875135A (en) * | 2020-07-08 | 2020-11-03 | 江苏圣富利环境工程有限公司 | Zero-discharge treatment process for electroplating wastewater |
| WO2022142181A1 (en) * | 2020-12-28 | 2022-07-07 | 国网河北省电力有限公司电力科学研究院 | Desulfurization wastewater zero-discharge device and system |
| CN113023998A (en) * | 2021-04-14 | 2021-06-25 | 吉林省铸洁环保有限责任公司 | Desulfurization waste water zero release processing system based on bypass flue evaporation |
| CN113800704A (en) * | 2021-11-17 | 2021-12-17 | 浙江晟格生物科技有限公司 | Ion exchange resin regeneration activation wastewater distillation concentration treatment method |
| CN113800704B (en) * | 2021-11-17 | 2022-02-22 | 浙江晟格生物科技有限公司 | Ion exchange resin regeneration activation wastewater distillation concentration treatment method |
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