CN106277510B - Sewage treatment process and system - Google Patents
Sewage treatment process and system Download PDFInfo
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- CN106277510B CN106277510B CN201510278349.6A CN201510278349A CN106277510B CN 106277510 B CN106277510 B CN 106277510B CN 201510278349 A CN201510278349 A CN 201510278349A CN 106277510 B CN106277510 B CN 106277510B
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- sewage
- station
- water
- ultrafilter
- disposal system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The present invention provides sewage treatment process and system, the system includes process for producing sewage and sequentially connected water station, Desultwater Station, two return water stations, three-protection design station, three wastes pollution discharge pond, the first elevator pump, mechanical filter and triple effect evaporator, two return water station and triple effect evaporator are connected by circulation water station, and two return water station includes sequentially connected air flotation device, the first dosing pump, integrated water purifier, ultra filtration device and RO counter-osmosis device；The system further includes Pretreatment of Domestic Sewage and sequentially connected underground sewage disposal system device, the second elevator pump, the second dosing pump, pipe-line mixer, more medium filter and ultrafilter, the more medium filter and ultrafilter are connected by circulation underground sewage disposal system device, the ultrafilter is connect with water station, the sewage water treatment method can prevent pollution environment, save production cost.
Description
Technical field
The present invention relates to sewage treatment field more particularly to sewage treatment process and systems.
Background technique
With world economy and industrialized process, the demand of water is being constantly increasing, consequent is waste water
Discharge amount it is also increasing, discharge standard is also increasingly stringenter.Polysilicon is manufacture integrated circuit, photovoltaic solar cell etc.
The key basic material of product is the important foundation stone of Information of Development industry and Photovoltaic new energy industry, but polysilicon was producing
Exhaust gas, discharge of wastewater are inevitably generated in journey, and thus generates serious problem of environmental pollution, this has become polysilicon
One of the key that can industry survive and develop in a healthy way.
Especially during the vent gas treatment of polysilicon, hydrolyzing chlorosilane generates hydrogen chloride, and hydrogen chloride is dissolved in water and generates greatly
High salt waste water is measured, these wastewater treatments are improper to make chlorinity in efflux wastewater exceeded, pollute to periphery water environment.
Production of polysilicon region can also generate a large amount of sanitary sewages, and traditional sanitary sewage is direct outlet mostly, significantly
Increase the production cost of production of polysilicon.
In consideration of it, it is necessary to design sewage treatment process and system to solve the above problems.
Summary of the invention
The technical problem to be solved by the present invention is pollution environment can be prevented by providing one kind, the zero-emission of production cost is saved
Put sewage treatment process and system.
In order to achieve the above objectives, the present invention provides the following technical scheme that
A kind of technical solution:
Sewage treatment process comprising following processing step:
Production waste enters Desultwater Station via water station first, eliminates sewage with reverse osmosis by filtering in Desultwater Station
In solid impurity, colloid, larger molecular organics and salt ion, be delivered to by the qualified product water of processing and each use water spot；
Then the solid impurity in the two further filter sewages in return water station, sewage are flowed into from the sewage being discharged in Desultwater Station
The COD that air flotation device changes sewage is first passed around in two return water stations, then oxidant, flocculation aid and flocculation are added into sewage
Agent sterilizes sewage and the charged particle in sewage is made to solidify to form floccule, is then passed through integrated water purifier, ultra filtration
Device and RO counter-osmosis device removal solid impurity, colloid, larger molecular organics and salt ion, through the qualified production of two return water stations processing
Product water, which just flows back in water station, to be recycled；
The sewage being discharged from two return water stations continues to flow into three-protection design station, discharges exhaust gas for eluting removal production of polysilicon
In chlorosilane and hydrogen chloride, a part of sewage after elution carries out putting out slag after the processing of three-protection design station for being discharged to boiler；
Another part sewage being discharged from three-protection design station successively flows into three wastes pollution discharge pond, the first elevator pump, mechanical filter
Device and triple effect evaporator, steam is passed through into triple effect evaporator, vaporizes sewage through heat exchanger, by high concentration salinity from sewage
Separation, obtained distillation condensation flow return water station recycle, and the solid waste of triple effect evaporator discharge just sends out outward transport landfill.
Further, the sewage water treatment method further includes that sanitary sewage first passes around the reduction of underground sewage disposal system device
COD and BOD；It is transported in pipe-line mixer via the second elevator pump again, and to oxidant, flocculation aid are added in pipe-line mixer
Sewage is sterilized with flocculant, so that the charged particle in sewage is frozen into floccule；Then multimedium mistake is passed sequentially through
Filter and ultrafilter multi-filtering, the draining of more medium filter and ultrafilter return to above-mentioned underground sewage disposal system and think highly of newly
Filtering pretreatment；It is connected in water station through the filtered sanitary sewage of ultrafilter and carries out advanced treatment and reclamation.
Further, the water station includes circulating water pool and reception sewage and/or the life for receiving processed product water
The circulating sewage pond of sewage.
Further, the flocculant uses the weight ratio of aluminium chloride and ST efficient flocculant for 20-25:1 mixing
Investment.
Further, the flocculant uses aluminium chloride 5-10ppm or ST efficient flocculant 0.2-0.5ppm.
Further, 6≤PH≤9 in the triple effect evaporator.
Another technical solution:
Sewage disposal system comprising sequentially connected water station, Desultwater Station, two return water stations, three-protection design station, three wastes row
Dirty pond, the first elevator pump, mechanical filter and triple effect evaporator, two return water station and triple effect evaporator are connected by circulation water
It stands, two return water station includes sequentially connected air flotation device, integrated water purifier, ultra filtration device and RO counter-osmosis device, institute
It states and is equipped with the first dosing pump between air flotation device and integrated water purifier.
Further, the sewage disposal system further include sequentially connected underground sewage disposal system device, the second elevator pump,
Pipe-line mixer, more medium filter and ultrafilter are equipped with the second dosing pump between second elevator pump and pipe-line mixer,
The more medium filter and ultrafilter are connected by circulation underground sewage disposal system device, and the ultrafilter is connect with water station.
Further, the water station includes circulating water pool and circulating sewage pond, the circulating sewage pond and the desalination of series winding
Water station connection, two return water station and triple effect evaporator are connect with circulating water pool, and the ultrafilter is connect with circulating sewage pond.
The prior art is compared, and the present invention has at least the following advantages: the impurity and high salt in sewage can be efficiently separated,
Allow to sufficiently obtain cycle applications, it is therefore prevented that zero-emission is realized in influence of the production waste to environment；And the present invention is reasonable
Sanitary sewage and production waste are jointly processed by, production cost is saved, improves the utilization rate of sewage.
Detailed description of the invention
Fig. 1 is the flow diagram of sewage disposal system of the invention.
Fig. 2 is the flow chart at two return water stations in sewage disposal system shown in FIG. 1.
Fig. 3 is the pretreated flow chart of sanitary sewage in sewage disposal system of the invention.
Specific embodiment
Below with reference to Fig. 1 to Fig. 3, preferred embodiments of the present invention will be described.
The present invention is sewage disposal system, including sequentially connected water station 1, Desultwater Station 2, two return water stations 3, three-protection design
It stands 4, three wastes pollution discharge pond 5, the first elevator pump 6, mechanical filter 7 and triple effect evaporator 8.Two return water station 3 and triple effect steam
Hair device 8 is connected by circulation water station 1.Two return water station 3 includes sequentially connected air flotation device 9, integrated water purifier 10, super
Filter 11 and RO counter-osmosis device 12.The first dosing pump 13 is equipped between the air flotation device 9 and integrated water purifier 10.
The zero-emission sewage disposal system further includes the preprocessing module to sanitary sewage, referring in particular to Fig. 3.It is described
Preprocessing module includes sequentially connected underground sewage disposal system device 14, the second elevator pump 15, pipe-line mixer 16, multimedium mistake
Filter 17 and ultrafilter 18.The second dosing pump 19 is equipped between second elevator pump 15 and pipe-line mixer 16.More Jie
Mass filter 17 and ultrafilter 18 are connected by circulation underground sewage disposal system device 14.The ultrafilter 18 is connect with water station 1.
The water station 1 includes circulating water pool 20 and the circulating sewage pond 21 of series winding.The circulating sewage pond 21 and desalted water
Stand 2 connection.Two return water station 3 and triple effect evaporator 8 are connect with circulating water pool 20.The ultrafilter 18 and circulating sewage pond
21 connections.
Embodiment one:
Sewage treatment process of the present invention comprising following processing step:
Production waste enters Desultwater Station 2 via the circulating sewage pond 21 of water station 1 first, passes through in Desultwater Station 2
The reverse osmosis solid impurity and part ion eliminated in production waste is filtered, and then reduces the hardness and ion concentration of water, is passed through
The qualified various products water of processing, which is just discharged to, each uses water spot；
Then the solid impurity in the further filter sewage in two return water station 3 is flowed into from the sewage being discharged in Desultwater Station 2, it is dirty
It is 80%-85% that water, which first passes around air flotation device 9 in two return water stations 3 and reduces the COD of sewage, then is added into sewage by first
Teat pipette 13 adds oxidant, flocculation aid and flocculant sterilize sewage and make the charged particle in sewage solidify to be formed it is cotton-shaped
Object is then passed through integrated water purifier 10, ultra filtration device 11 and RO counter-osmosis device 12 and removes solid impurity, through two return water stations 3
The qualified product water of processing, which just flows back in water station circulating water pool 20, to be recycled, and the flocculant uses aluminium chloride and ST
The weight ratio of efficient flocculant is 25:1 mixing investment；
The sewage being discharged from two return water stations 3 continues to flow into three-protection design station 4, for eluting removal production of polysilicon discharge
Chlorosilane and hydrogen chloride in exhaust gas, a part of sewage after elution are put out after the processing of three-protection design station for being discharged to boiler
Slag, the sewage after woods is washed still conform to sewage drainage standard after the processing of three-protection design station, 6 < PH < 9, fluoride < 10 mg/L,
COD<150mg/L；Another part sewage being discharged from three-protection design station 4 successively flows into three wastes pollution discharge pond 5, the first elevator pump 6, machine
Tool filter 7 and triple effect evaporator 8 separate high concentration salinity from sewage, and steam, which is added, vaporizes sewage, obtains
It distills and is recycled in the circulating water pool 20 at condensation flow return water station 1, the solid waste that triple effect evaporator 8 is discharged just is sent out outward transport and filled out
It buries, achievees the effect that sewage zero-discharge, PH=6 in triple effect evaporator 9；
Sanitary sewage, which first passes around underground sewage disposal system device 14, reduces COD and BOD；It is conveyed again via the second elevator pump 15
Oxidant, flocculation aid and flocculation is added into pipe-line mixer 16, and in pipe-line mixer 16 and by the second dosing pump 19
Sewage is sterilized in agent, so that the charged particle in sewage is frozen into floccule；Then more medium filter 17 is passed sequentially through
With 18 multi-filtering of ultrafilter, the draining of more medium filter 17 and ultrafilter 18 returns to above-mentioned underground sewage disposal system device 14
Again filtering pretreatment；The circulating sewage pond 21 in water station, which is connected to, through the filtered sanitary sewage of ultrafilter 18 carries out depth
Processing, i.e., pretreated sanitary sewage mix in circulating sewage Chi Zhongyu production waste and carry out advanced treating.Described second adds
Flocculant in Teat pipette 19 also uses the weight ratio of aluminium chloride and ST efficient flocculant to mix for 25:1 and puts into.
Embodiment two:
The present embodiment is basically the same as the first embodiment, and the difference is that only: the first dosing pump 1 and the second dosing pump 19
Flocculant uses the weight ratio of aluminium chloride and ST efficient flocculant for 20:1.PH=7 in triple effect evaporator 8.
Embodiment three:
The present embodiment and embodiment one and two are essentially identical, the difference is that only: the first dosing pump 1 and the second dosing pump
19 flocculant uses the weight ratio of aluminium chloride and ST efficient flocculant for 22:1.PH=9 in triple effect evaporator 8.
Example IV:
The present embodiment and embodiment one, two, three are essentially identical, the difference is that only: the first dosing pump 1 and the second dosing
The flocculant of pump 19 uses aluminium chloride 10ppm or ST efficient flocculant 0.2ppm.
Embodiment five:
The present embodiment is essentially identical with example IV, the difference is that only: the first dosing pump 1 and the second dosing pump 19
Flocculant uses aluminium chloride 5ppm or ST efficient flocculant 0.5ppm.
Embodiment six:
It is the present embodiment and example IV, five essentially identical, it the difference is that only: the first dosing pump 1 and the second dosing pump
19 flocculant uses aluminium chloride 8ppm or ST efficient flocculant 0.35ppm.
In conclusion the above is merely preferred embodiments of the present invention, should not be limited the scope of the invention with this.It is i.e. all
It is that should still belong to the invention patent according to simple equivalent changes and modifications made by claims of the present invention and description
In the range of covering.
Claims (9)
1. sewage treatment process, it is characterised in that: comprise the following steps that:
Production waste enters Desultwater Station via water station first, is eliminated in sewage by filtering with reverse osmosis in Desultwater Station
Solid impurity, colloid, larger molecular organics and salt ion are delivered to by the qualified product water of processing and each use water spot；
Then the solid impurity in the two further filter sewages in return water station is flowed into from the sewage being discharged in Desultwater Station, sewage is two
The COD that air flotation device changes sewage is first passed around in return water station, then oxidant, flocculation aid and flocculant pair are added into sewage
Sewage sterilizes and the charged particle in sewage is made to solidify to form floccule, be then passed through integrated water purifier, ultra filtration device with
And RO counter-osmosis device removal solid impurity, colloid, larger molecular organics and salt ion, through the qualified product water of two return water stations processing
Just it flows back in water station and recycles；
The sewage being discharged from two return water stations continues to flow into three-protection design station, for eluting in removal production of polysilicon discharge exhaust gas
Chlorosilane and hydrogen chloride, a part of sewage after elution carry out putting out slag after the processing of three-protection design station for being discharged to boiler；
From three-protection design station be discharged another part sewage successively flow into three wastes pollution discharge pond, the first elevator pump, mechanical filter and
Triple effect evaporator is passed through steam into triple effect evaporator, vaporizes sewage through heat exchanger, and high concentration salinity is divided from sewage
From obtained distillation condensation flow return water station recycles, and the solid waste of triple effect evaporator discharge just sends out outward transport landfill.
2. sewage treatment process as described in claim 1, it is characterised in that: the sewage treatment process further includes sanitary sewage
First passing around underground sewage disposal system device reduces COD and BOD；It is transported in pipe-line mixer via the second elevator pump again, and to
Oxidant, flocculation aid and flocculant are added in pipe-line mixer to sterilize sewage, so that the charged particle in sewage solidifies
At floccule；Then more medium filter and ultrafilter multi-filtering, the draining of more medium filter and ultrafilter are passed sequentially through
It returns to above-mentioned underground sewage disposal system and thinks highly of new filtering pretreatment；Water station is connected to through the filtered sanitary sewage of ultrafilter
Middle carry out advanced treatment and reclamation.
3. sewage treatment process as claimed in claim 2, it is characterised in that: the water station includes receiving processed product water
Circulating water pool and receive the circulating sewage pond of sewage and/or sanitary sewage.
4. sewage treatment process as described in claim 1, it is characterised in that: the flocculant uses aluminium chloride and ST high
The weight ratio for imitating flocculant is 20-25:1 mixing investment.
5. sewage treatment process as claimed in claim 2, it is characterised in that: the flocculant uses aluminium chloride 5-
10ppm or ST efficient flocculant 0.2-0.5ppm.
6. sewage treatment process as claimed in claim 2, it is characterised in that: 6≤pH≤9 in the triple effect evaporator.
7. sewage disposal system, it is characterised in that: the sewage disposal system includes sequentially connected water station, Desultwater Station, two
Return water station, three wastes elution pond, three wastes pollution discharge pond, the first elevator pump, mechanical filter and triple effect evaporator, two return water station
It is connected by circulation water station with triple effect evaporator, two return water station includes sequentially connected air flotation device, integrated water purifier, surpasses
Grade filter and RO counter-osmosis device are equipped with the first dosing pump between the air flotation device and integrated water purifier.
8. sewage disposal system as claimed in claim 7, it is characterised in that: the sewage disposal system further includes being sequentially connected
Underground sewage disposal system device, the second elevator pump, pipe-line mixer, more medium filter and ultrafilter, second elevator pump
The second dosing pump is equipped between pipe-line mixer, the more medium filter and ultrafilter are connected by circulation at buried sewage
Device is managed, the ultrafilter is connect with water station.
9. sewage disposal system as claimed in claim 7, it is characterised in that: the water station includes the circulating water pool of series winding and follows
Environmental pollution pond, the circulating sewage pond are connect with Desultwater Station, and two return water station and triple effect evaporator connect with circulating water pool
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510278349.6A CN106277510B (en) | 2015-05-28 | 2015-05-28 | Sewage treatment process and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510278349.6A CN106277510B (en) | 2015-05-28 | 2015-05-28 | Sewage treatment process and system |
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| Publication Number | Publication Date |
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| CN106277510A CN106277510A (en) | 2017-01-04 |
| CN106277510B true CN106277510B (en) | 2019-04-05 |
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| CN201510278349.6A Active CN106277510B (en) | 2015-05-28 | 2015-05-28 | Sewage treatment process and system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101306A (en) * | 2017-12-23 | 2018-06-01 | 淮北智淮科技有限公司 | A kind of processing method of trade effluent |
| CN107879519A (en) * | 2017-12-23 | 2018-04-06 | 淮北智淮科技有限公司 | A kind of domestic sewage treatment process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201620084U (en) * | 2009-12-17 | 2010-11-03 | 乐山永祥硅业有限公司 | Waste water treating device for trichlorosilane production |
| CN102295374A (en) * | 2011-08-16 | 2011-12-28 | 深圳恒通源水处理科技有限公司 | Preparation method and preparation equipment of water for solar battery production |
| CN202246314U (en) * | 2011-09-13 | 2012-05-30 | 深圳恒通源水处理科技有限公司 | Water treatment system for polycrystalline silicon production |
| KR20120105903A (en) * | 2011-03-17 | 2012-09-26 | (주)케이지인바이로텍 | Recycling method for poly silicon waste |
-
2015
- 2015-05-28 CN CN201510278349.6A patent/CN106277510B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201620084U (en) * | 2009-12-17 | 2010-11-03 | 乐山永祥硅业有限公司 | Waste water treating device for trichlorosilane production |
| KR20120105903A (en) * | 2011-03-17 | 2012-09-26 | (주)케이지인바이로텍 | Recycling method for poly silicon waste |
| CN102295374A (en) * | 2011-08-16 | 2011-12-28 | 深圳恒通源水处理科技有限公司 | Preparation method and preparation equipment of water for solar battery production |
| CN202246314U (en) * | 2011-09-13 | 2012-05-30 | 深圳恒通源水处理科技有限公司 | Water treatment system for polycrystalline silicon production |
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| CN106277510A (en) | 2017-01-04 |
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Effective date of registration: 20201117 Address after: 015500 southeast of the intersection of jingsan road and Weisi Road, Qingshan Industrial Park, wulatehouqi, Bayannur City, Inner Mongolia Autonomous Region Patentee after: Bayannur concentrated Silicon Industry Co., Ltd Address before: 015543 the Inner Mongolia Autonomous Region Bayannaoer wulatehouqi Qingshan Industrial Park Patentee before: INNER MONGOLIA DUN'AN PHOTOVOLTAIC TECHNOLOGY Co.,Ltd. |