CN207175661U - A kind of desulfurization wastewater treatment system - Google Patents
A kind of desulfurization wastewater treatment system Download PDFInfo
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- CN207175661U CN207175661U CN201721059690.3U CN201721059690U CN207175661U CN 207175661 U CN207175661 U CN 207175661U CN 201721059690 U CN201721059690 U CN 201721059690U CN 207175661 U CN207175661 U CN 207175661U
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Abstract
The utility model discloses a kind of desulfurization wastewater treatment system, including desulfurization wastewater softening plant, demineralizer and the preparing chlorine by electrolysis system being sequentially connected by pipeline.The hypochlorite obtained through the utility model desulfurization wastewater treatment system has very strong sterilizing function, power plant cycle water process, film processing system bactericide can be used as to use, the recycling rate of power plant's water system is improved, reduces water intake of power plant cost and production cost.
Description
Technical field
The process field of heat-engine plant desulfurized waste water is the utility model is related to, specifically a kind of desulfurization wastewater treatment system.
Background technology
Prior art mainly has two schemes：
The desulfurization wastewater of scheme one uses flocculation sediment+softening+concentration+evaporation+crystallization
The problem of existing:
1st, occupation area of equipment is big, and construction investment is very high, and ton water invests 3,500,000-400 ten thousand yuan/ton of water；
2nd, medicament and high energy consumption, cause O＆M costly, about 300 yuan/ton of water of operation and maintenance expenses；
3rd, the disposal costs of evaporative crystallization product mixed salt are high；
3rd, divide sodium chloride, the sodium sulphate market value of salt output low, it is difficult to cost recovery.
4th, thermal power plant need to consider outer committee's disposal or as solidification disposal of waste without industrial salt manufacturing licensing；
The desulfurization wastewater of scheme two passes through flocculation sediment+flue evaporation technology
The problem of existing：
1st, in the case of design improperly, flue fouling is serious；Flue flow field is complicated, and if design is improper, flying dust can produce
On the wall, chlorion can be to causing heavy corrosion exposed to outer steel member for raw adhesion effect adhesion；
2nd, the design of atomizer and the arrangement of shower nozzle influence big on evaporation effect, desulfurization wastewater concentration and atomized drop
Size directly affects evaporation effect；
3rd, the burden of deduster is added, while reduces fired coal combustion efficiency；There is higher want to desulfurization wastewater pretreatment
Ask, SS quantity influences very big on flue evaporation rotational flow atomizer in water；
4th, treating capacity is small, about 2,600,000 yuan of ton water investment cost, about 130 yuan/ton of water of operation and maintenance expenses；Such as increase treating capacity, need
System is redesigned；
5th, the evaporation of desulfurization wastewater reduces cigarette temperature, reduces the efficiency of combustion of boiler, adds coal-fired consumption；
6th, desulfurization wastewater is not handled, can not reuse, do not meet the national policy of energy-saving and water-saving.
Utility model content
For above-mentioned technical problem, the utility model proposes a kind of method for treating desulfurized wastewater, using electrochemical treatments side
Formula, suspension, heavy metal and COD in desulfurization wastewater are removed, desulfurization wastewater is concentrated by ro treatment technology, produced
Water enters power plant production technology section and carries out reuse, the concentrated water after concentration by preparing chlorine by electrolysis system be greatly lowered chlorine in water from
Sub- content, it is hypochlorite by the villaumite conversion in concentrated water, hypochlorite has very strong sterilizing function, can be used as power plant
Circulating water treatment, film processing system bactericide use, and improve the recycling rate of power plant's water system, reduce water intake of power plant into
Sheet and production cost.
In order to realize above-mentioned technical purpose, the utility model adopts the following technical scheme that：
A kind of desulfurization wastewater treatment system, including desulfurization wastewater softening plant, the demineralizer being sequentially connected by pipeline
With preparing chlorine by electrolysis system；
The desulfurization wastewater softening plant includes preliminary sedimentation tank, the first regulating reservoir, electric flocculation device, depositing reservoir, the second regulation
Pond and sludge treatment device, wherein：
The bottom of preliminary sedimentation tank is provided with connection inlet channel, and delivery port is set in preliminary sedimentation tank pool wall side, and delivery port passes through the
One outlet conduit is connected with the first regulating reservoir, and preliminary sedimentation tank sets liquid level gauge；
First regulating reservoir peripheral hardware highly basic medicine system, after chemical feeding points are arranged on waste water delivery pump, strong base solution is placed on room
In outer lye tank, alkali lye is added in pipe-line mixer by drug feeding pipeline by dosing pump, and desulfurization wastewater is with medicament in pipe
Premix, and be added in the first regulating reservoir in road blender, mixer is set in the first regulating reservoir, passes through second on the first regulating reservoir
Outlet conduit is connected with electric flocculation device, and flowmeter and regulating valve are set on second outlet conduit；
Battery lead plate, strong oxidizer adding set and pH meters are set in electric flocculation device, electric flocculation bottom of device sets dirty
Mud floss hole, sludge caused by reaction connect sludge pipe by floss hole and enter sludge treatment device, and reacted water outlet is passed through
The flow export of first isopipe root enters depositing reservoir, and inclined tube clarifier is set in depositing reservoir, and current enter inclined tube clarifier,
And natural sedimentation is carried out, the water outlet after clarification overflows to the second overflow launder by overflow manner, and the second isopipe root sets stream
Outlet, the water of outflow enter more medium filter, and the water after more medium filter filters is flowed into the second regulating reservoir；
HCL chemical feeding points and agitating device are set in the second regulating reservoir, and pH tables, transmissometer, electrical conductivity table are set, simultaneously
Sample tap is set in the second regulating reservoir, the parameters of water outlet detected, by water delivery after the second regulating reservoir water outlet is qualified
Pump flows to demineralizer.
The demineralizer includes counter-infiltration raw water box and reverse osmosis unit；By water delivery after second regulating reservoir water outlet is qualified
Pump flows to that counter-infiltration raw water box is standby, and the water outlet of counter-infiltration raw water box enters reverse osmosis unit, is gone by reverse osmosis unit in water removal
Salinity, production water enters power plant production technology section and carries out reuse, and concentrated water enters preparing chlorine by electrolysis system.
The preparing chlorine by electrolysis system includes preparing chlorine by electrolysis system and sodium hypochlorite storage box, wherein, preparing chlorine by electrolysis system will
Chlorion generation sodium hypochlorite in concentrated water after reverse osmosis unit is handled, is stored in sodium hypochlorite storage box, hypochlorous acid
Sodium solution enters condenser processing system or chemical water treatment system uses as bactericide.
The beneficial effects of the utility model are：
The utility model uses electrochemical treatments mode, removes suspension, heavy metal and COD in desulfurization wastewater, passes through
Ro treatment technology concentrates to desulfurization wastewater, and production water enters power plant's production technology section and carries out reuse, the concentrated water after concentration
The chloride ion content in water is greatly lowered by preparing chlorine by electrolysis system, is hypochlorite by the villaumite conversion in concentrated water,
Hypochlorite has very strong sterilizing function, power plant cycle water process, film processing system bactericide can be used as to use, improve electricity
The recycling rate of factory's water system, reduces water intake of power plant cost and production cost.
The utility model desulfurization wastewater treatment system has the following advantages that：
Firstth, equipment modularization assembling, is not limited treating capacity using sled blockization design；
Secondth, cost of investment is low；
3rd, operation expense is low, and the utility model method equipment is low-pressure system, and O＆M cost is low, equivalent to it
His technique O＆M cost 8%, standby redundancy are easy to get and cheap；
4th, equipment is arranged on outside power plants generating electricity system, can independent operating, to power plant production do not impact；
5th, technique is simple, and system is easy to connect, is not required to add medicament in production, will not pollute；
6th, end productses are the necessary medicaments of power plant's conventional treatment, and usable value is high.
Brief description of the drawings
Fig. 1 is the structural representation of the heat-engine plant desulfurized Waste Water Treatment of the utility model；
Fig. 2 is the structural representation of electric flocculation device.
Embodiment
With reference to Figure of description and specific embodiment to a kind of skill of desulfurization wastewater treatment system of the utility model
Art scheme elaborates.
As shown in figure 1, the utility model discloses a kind of desulfurization wastewater treatment system, including be sequentially connected by pipeline
Desulfurization wastewater softening plant, demineralizer and preparing chlorine by electrolysis system；
The desulfurization wastewater softening plant includes preliminary sedimentation tank, the first regulating reservoir, electric flocculation device, depositing reservoir, the second regulation
Pond and sludge treatment device, wherein：
The bottom of preliminary sedimentation tank is provided with connection inlet channel, and delivery port is set in preliminary sedimentation tank pool wall side, and delivery port passes through the
One outlet conduit is connected with the first regulating reservoir, and preliminary sedimentation tank sets liquid level gauge；
First regulating reservoir peripheral hardware highly basic medicine system, after chemical feeding points are arranged on waste water delivery pump, strong base solution is placed on room
In outer lye tank, alkali lye is added in pipe-line mixer by drug feeding pipeline by dosing pump, and desulfurization wastewater is with medicament in pipe
Premix, and be added in the first regulating reservoir in road blender, mixer is set in the first regulating reservoir, passes through second on the first regulating reservoir
Outlet conduit is connected with electric flocculation device, and flowmeter and regulating valve are set on second outlet conduit；
Battery lead plate, strong oxidizer adding set and pH meters are set in electric flocculation device, electric flocculation bottom of device sets dirty
Mud floss hole, sludge caused by reaction connect sludge pipe by floss hole and enter sludge treatment device, and reacted water outlet is passed through
The flow export of first isopipe root enters depositing reservoir, and inclined tube clarifier is set in depositing reservoir, and current enter inclined tube clarifier,
And natural sedimentation is carried out, the water outlet after clarification overflows to the second overflow launder by overflow manner, and the second isopipe root sets stream
Outlet, the water of outflow enter more medium filter, and the water after more medium filter filters is flowed into the second regulating reservoir.
Desulfurization wastewater enters preliminary sedimentation tank by sewage pump, and is premixed by pipe-line mixer, and desulfurization wastewater exists
Preliminary sedimentation tank bottom enters in pond, while sets sludge blowdown apparatus in preliminary sedimentation tank bottom, check valve is set on blow-off pipe, and lead to
Cross sludge pump and enter the first sludge compressor.
Mud discharging is entered the first sludge compressor by sludge drainage system by sludge pump, and the water after sludge compression is back to just
In heavy pond, outward transport processing after sludge compression.
First outlet conduit is set inside preliminary sedimentation tank, and supernatant of the sewage after precipitation is by waste water delivery pump to the
In one regulating reservoir, preliminary sedimentation tank sets liquid level gauge.
First regulating reservoir peripheral hardware highly basic medicine system, alkali lye are added in pipe-line mixer by medicine system, waste water with
Alkali lye premixes in pipe-line mixer, and is added in the first regulating reservoir.The pH value that highly basic is used to adjust waste water is added, while can be sunk
Shallow lake part calcium ions and magnesium ions；Waste water enters in preliminary sedimentation tank, and mixer is set in pond, and mixer rotates stirring and alkali lye is filled with waste water
Divide mixing, pH tables are set in the first regulating reservoir, mixer is linked with waste water delivery pump, and mixer is opened when waste water delivery pump is opened
Open the first regulating reservoir and magnetic double level gauge is set, setting high-low-position is spacing, the sewage transport when liquid level reaches top set location
Pump is out of service, and when sewage is to delivery port neighbouring position, pump is out of service, and chemical feeding quantity is adjusted according to the pH tables of setting；Mix
Waste water flowed out by delivery port, the first regulating reservoir bottom set sewage draining exit discharge sludge.Blow-off line and the first regulating reservoir are dirty
Mud discharge tube connects, and is handled by the first sludge compressor compresses.
Electric flocculation apparatus structure described in the utility model on flow ipe as shown in Fig. 2 set flowmeter and regulation
Valve.
Waste water passes through waste water pump and regulating valve to electric flocculation device from the first regulating reservoir.
Battery lead plate is set in electric flocculation device, electric flocculation bottom of device sets mud discharging mouth, and sludge caused by reaction passes through
Floss hole connects sludge pipe and enters the second sludge compressor, the outward transport disposal of compressed sludge, and the water outlet of sludge compressibility enters
Second regulating reservoir.
Battery lead plate neck is set in electric flocculation device, battery lead plate is placed in battery lead plate neck, setting strong oxidizer in device adds
Feeder apparatus, strong oxidizer can be added electro-Fenton reaction occurs under the function of current, pH meters are set in electric flocculation device, after reaction
Flow export of the water outlet Jing Guo the first isopipe root enter depositing reservoir, inclined tube clarifier is set in depositing reservoir, current enter oblique
Pipe clarifier, and natural sedimentation is carried out, the water outlet after clarification overflows to the second overflow launder, the second overflow launder by overflow manner
Bottom sets flow export, and the water of outflow enters more medium filter；Water after more medium filter filters is flowed into second
Regulating reservoir.
Further, HCL chemical feeding points and agitating device are set in the second regulating reservoir, and pH tables, transmissometer, conductance are set
Rate table, while sample tap is set in the second regulating reservoir, the parameters of water outlet are detected, after the second regulating reservoir water outlet is qualified
It is standby that counter-infiltration raw water box is flowed to by water-delivery pump；The water outlet of counter-infiltration raw water box enters reverse osmosis unit.
The salinity gone by reverse osmosis unit in water removal, production water enter power plant's production technology section and carry out reuse, and concentrated water enters
Chlorion in water is generated sodium hypochlorite by preparing chlorine by electrolysis system, preparing chlorine by electrolysis system, and liquor natrii hypochloritis enters at condenser
Reason system or chemical water treatment system use as bactericide, finally realize power plant desulfurization wastewater zero-emission.
Claims (3)
- A kind of 1. desulfurization wastewater treatment system, it is characterised in that including be sequentially connected by pipeline desulfurization wastewater softening plant, Demineralizer and preparing chlorine by electrolysis system；The desulfurization wastewater softening plant include preliminary sedimentation tank, the first regulating reservoir, electric flocculation device, depositing reservoir, the second regulating reservoir with And sludge treatment device, wherein：The bottom of preliminary sedimentation tank is provided with connection inlet channel, sets delivery port in preliminary sedimentation tank pool wall side, delivery port goes out by first Waterpipe is connected with the first regulating reservoir, and preliminary sedimentation tank sets liquid level gauge；First regulating reservoir peripheral hardware highly basic medicine system, after chemical feeding points are arranged on waste water delivery pump, strong base solution is placed on outdoor In lye tank, alkali lye is added in pipe-line mixer by drug feeding pipeline by dosing pump, and desulfurization wastewater mixes with medicament in pipeline Premix, and be added in the first regulating reservoir in clutch, mixer is set in the first regulating reservoir, passes through the second water outlet on the first regulating reservoir Pipeline is connected with electric flocculation device, and flowmeter and regulating valve are set on second outlet conduit；Battery lead plate, strong oxidizer adding set and pH meters are set in electric flocculation device, electric flocculation bottom of device sets sludge to arrange Mouth is put, sludge caused by reaction connects sludge pipe by floss hole and enters sludge treatment device, and reacted water outlet passes through first The flow export of isopipe root enters depositing reservoir, and inclined tube clarifier is set in depositing reservoir, and current enter inclined tube clarifier, gone forward side by side Row natural sedimentation, the water outlet after clarification overflow to the second overflow launder by overflow manner, and the second isopipe root sets flow export, The water of outflow enters more medium filter, and the water after more medium filter filters is flowed into the second regulating reservoir；HCL chemical feeding points and agitating device are set in the second regulating reservoir, and pH tables, transmissometer, electrical conductivity table are set, while the Two regulating reservoirs set sample tap, the parameters of water outlet are detected, by water-delivery pump stream after the second regulating reservoir water outlet is qualified To demineralizer.
- 2. desulfurization wastewater treatment system according to claim 1, it is characterised in that it is former that the demineralizer includes counter-infiltration Water tank and reverse osmosis unit；It is standby that by water-delivery pump counter-infiltration raw water box is flowed to after second regulating reservoir water outlet is qualified, and counter-infiltration is former Water tank water outlet enters reverse osmosis unit, the salinity gone by reverse osmosis unit in water removal, and production water enters into power plant's production technology section Row reuse, concentrated water enter preparing chlorine by electrolysis system.
- 3. desulfurization wastewater treatment system according to claim 1, it is characterised in that the preparing chlorine by electrolysis system includes electrolysis Chlorine system and sodium hypochlorite storage box processed, wherein, preparing chlorine by electrolysis system by the chlorine in the concentrated water after reverse osmosis unit is handled from Son generation sodium hypochlorite, is stored in sodium hypochlorite storage box, liquor natrii hypochloritis enters condenser processing system or chemical water Processing system uses as bactericide.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721059690.3U CN207175661U (en) | 2017-08-23 | 2017-08-23 | A kind of desulfurization wastewater treatment system |
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| CN201721059690.3U CN207175661U (en) | 2017-08-23 | 2017-08-23 | A kind of desulfurization wastewater treatment system |
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| CN207175661U true CN207175661U (en) | 2018-04-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107364994A (en) * | 2017-08-23 | 2017-11-21 | 南京友智科技有限公司 | A kind of method for treating desulfurized wastewater and system |
| CN110550791A (en) * | 2018-05-30 | 2019-12-10 | 北京朗新明环保科技有限公司 | Desulfurization waste water resourceful zero discharge system |
-
2017
- 2017-08-23 CN CN201721059690.3U patent/CN207175661U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107364994A (en) * | 2017-08-23 | 2017-11-21 | 南京友智科技有限公司 | A kind of method for treating desulfurized wastewater and system |
| CN110550791A (en) * | 2018-05-30 | 2019-12-10 | 北京朗新明环保科技有限公司 | Desulfurization waste water resourceful zero discharge system |
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