CN105271623B - Municipal middle water with steel wastewater is combined and staged is back to iron and steel enterprise's system and technique - Google Patents
Municipal middle water with steel wastewater is combined and staged is back to iron and steel enterprise's system and technique Download PDFInfo
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- CN105271623B CN105271623B CN201510832792.3A CN201510832792A CN105271623B CN 105271623 B CN105271623 B CN 105271623B CN 201510832792 A CN201510832792 A CN 201510832792A CN 105271623 B CN105271623 B CN 105271623B
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Abstract
The present invention relates to a kind of municipal middle waters and the combined and staged system and technique for being back to iron and steel enterprise of steel wastewater, belong to municipal middle water and utilize technical field with steel production Sewage treatment.The municipal middle water that municipal sewage plant is discharged the present invention clean circulating water pipe network and new grid of grading recycle in iron and steel enterprise after level-one sewerage disposing system, two level advanced treatment system two-stage treatment, at the same by steel produce waste water after primary wastewater processing system, two level advanced treatment system, three-level desalting system tertiary treatment grading recycle in iron and steel enterprise itself.Using graded combination processing by the way of and different reusing plans, water treatment facilities are made to realize shared, solves the problems, such as iron and steel enterprise's shortage of water resources, reduce iron and steel enterprise's operating cost, realize the sustainable development of water resource, serious problem of environmental pollution is avoided, there is important economic benefit and social environment benefit.
Description
Technical field
The invention belongs to municipal middle waters and steel production Sewage treatment to utilize technical field, more particularly to a kind of municipal middle water
The combined and staged system and technique for being back to iron and steel enterprise of waste water is produced with steel.
Background technology
China is the country of a serious water shortage, and it is about 2500m to occupy freshwater resources amount year per capita3, it is world's water per capita
Flat 1/4 occupies 109, the world.Steel and iron industry is to use water and blowdown rich and influential family in industrial circle, is only second to electric power, textile printing and dyeing
And paper industry, water consumption account for about the 14% of the total water consume of national industry, wastewater discharge accounts for about 12% that industry always drains.At present
Based on underground water, river water, quantity of wastewater effluent is big at iron and steel enterprise water source, and environmental pollution is serious.History is put into effect in center within 2 months 2015
Most tight " ten, water " controls disposal of pollutants, groundwater mining of keeping under strict control comprehensively, and it is water-saving that each all forces steel industrial enterprises to be accelerated
Emission reduction paces develop new water source, recycle waste water resource to greatest extent, reduce wastewater discharge, realize wastewater zero discharge.
Middle water is internationally recognized second water source, and source quality water is reliable and stable, and Reuse Range is wide.Municipal middle water reuse
Pollution of the tail water to environment for having thoroughly removed municipal sewage alleviates water resource deficiency significantly；Treated sewage reusing is than developing and using
Other water resources have advantage economically, and the water producing cost of recycle-water is low, saves water resources taxes, the energy consumption of remote water delivery
Expense and capital cost.Therefore, it develops municipal middle water and the industrial effluent reusing replacement water source new as iron and steel enterprise has and weigh
Want meaning.
Invention content
Goal of the invention
In order to solve the problems, such as that iron and steel enterprise's shortage of water resources and increasingly prominent water environment pollution, the present invention propose one kind
Municipal middle water produces the combined and staged system and technique for being back to iron and steel enterprise of waste water with steel, is replaced municipal middle water as new
It is back to iron and steel enterprise after classification is handled for water source, will be back to after the industrial wastewater classification processing of steel manufacture process discharge
Iron and steel enterprise itself.
Technical solution
A kind of municipal middle water produces the combined and staged system for being back to iron and steel enterprise of waste water with steel, it is characterised in that：It should
System includes municipal middle water processing system, wastewater of steel industry processing system and iron and steel enterprise's reclaiming system three parts, in city
Water treatment system connects iron and steel enterprise's reclaiming system, and wastewater of steel industry processing system connects iron and steel enterprise's reclaiming system；City
Sewage treatment plant's outlet side is divided into two by piping connection level-one sewerage disposing system, the outlet side of level-one sewerage disposing system
Branch, a branch connect two level advanced treatment system, another branch connects the clean circulating water pipe network of iron and steel enterprise；Two level depth
The outlet side of processing system is separately connected the clean circulating water pipe network of iron and steel enterprise and new grid；The outlet side connection one of iron and steel enterprise
The outlet side of grade waste water treatment system, primary wastewater processing system is divided into two branches, and a branch connects the net of iron and steel enterprise
Ring grid, another branch connect two level advanced treatment system；The outlet side of two level advanced treatment system is divided into three branches,
The clean circulating water pipe network of one branch connection iron and steel enterprise, another branch connect the new grid of iron and steel enterprise, third branch
Connect three-level desalting system；The outlet side of three-level desalting system is divided into two branches, the new water of a branch connection iron and steel enterprise
Pipe network, another branch connect the desalination grid of iron and steel enterprise.
Primary wastewater processing system includes grid, and grid connects regulating reservoir, and regulating reservoir connection carries turn on pump station, carries turn on pump station company
Primary sedimentation basin is connect, primary sedimentation basin connects secondary clarifier, and secondary sedimentation tank connects sand filter, and sand filter connects clear water reserviors,
Clear water reserviors are separately connected clean circulating water pipe network and two level advanced treatment system；The blowdown end of primary sedimentation basin and secondary clarifier connects
Sludge digestion tank is connect, sludge digestion tank is separately connected regulating reservoir and filter press.
Two level advanced treatment system includes distribution well, and distribution well connects high efficiency clarification tank, and high efficiency clarification tank is separately connected V-type
Filter tank and sludge pump, sludge pump connect filter press, and V-type filter tank connects sterilization pool, and sterilization pool connects clear water reserviors, and clear water reserviors connect respectively
Connect clean circulating water pipe network, new grid and three-level desalting system.
Three-level desalting system includes self-cleaning filter, and self-cleaning filter connects ultrafiltration apparatus, and ultrafiltration apparatus connection is anti-
Booster pump is permeated, reverse osmosis booster pump connects cartridge filter, and cartridge filter connects high-pressure pump, and high-pressure pump connects reverse osmosis dress
It sets, reverse osmosis unit is separately connected desalination pond and strong brine pond, and desalination pond is separately connected desalination grid and new grid.
It is a kind of that municipal middle water and steel being produced into the combined and staged technique for being back to iron and steel enterprise of waste water with above system, it will
The industrial wastewater of municipal sewage plant's discharge is by primary wastewater processing system, two level advanced treatment system, three-level desalination system
Grading recycle is in iron and steel enterprise itself after system tertiary treatment；The secondary effluent of municipal sewage plant's discharge is returned as municipal middle water
Raw water after level-one sewerage disposing system, two level advanced treatment system two-stage treatment grading recycle in the net of iron and steel enterprise
Ring grid and new grid；The industrial wastewater of iron and steel enterprise's discharge is by primary wastewater processing system, two level advanced treating system
Grading recycle is in iron and steel enterprise itself after system, three-level desalting system tertiary treatment.
For the processing procedure of municipal middle water and steel production waste water by the way of graded combination processing, municipal middle water divides two-stage
Processing, wastewater of steel industry divide tertiary treatment, and water treatment facilities, which are realized, to be shared, and the processing ratio of water at different levels is wanted according to enterprise water use
Seek Joint regulation.
The primary wastewater processing system of the level-one sewerage disposing system and wastewater of steel industry processing of the municipal middle water processing
System uses identical treatment process, realizes Combined Treatment waste water；Processing equipment sub-module is arranged, according to municipal middle water and Industry Waste
The water ratio adjustment module ratio of water shares processing equipment, and dosing, sludge dewatering and filter back washing system share.
The two level advanced treating system of the two level advanced treatment system and wastewater of steel industry processing of the municipal middle water processing
System uses identical treatment process, realizes Combined Treatment waste water；Processing equipment sub-module is arranged, according to municipal middle water and Industry Waste
The water ratio adjustment module ratio of water shares processing equipment, and dosing, sludge dewatering and filter back washing system share.
By the way of grading recycle, municipal middle water is back to use iron and steel enterprise for the reuse of municipal middle water and steel production waste water
Clean circulating water pipe network and new grid, industrial effluent reusing to iron and steel enterprise's clean circulating water pipe network, new grid and desalination grid.
The method of Treated sewage reusing be after being mixed in required ratio with the new water after advanced treating before two level advanced treating again
Supplement water of the reuse as clean circulating water, or the new water after advanced treating is directly fed to the new grid of iron and steel enterprise；By three-level
Supplement water of the reuse as new water again after being mixed in required ratio with the demineralized water after desalting system before desalting system, or by desalination
Demineralized water after system directly feeds the desalination grid of iron and steel enterprise.
Advantage and effect
Advantages and beneficial effects of the present invention are as follows：
1. municipal middle water is divided two-stage treatment, wastewater of steel industry to divide tertiary treatment, the processing ratio of water at different levels by the present invention
Joint regulation can be required according to enterprise water use, the different reusing plans of proposition, so that recycle-water is met, iron and steel enterprise is a variety of to use water
Demand really realizes the replacement of industrial water.
2. the present invention realizes the Combined Treatment of municipal middle water and steel production waste water, water treatment facilities realize it is shared,
Processing capacity realizes elastification, and dosing, sludge dewatering and filter back washing system, which are realized, to be shared, and initial cost cost has been saved.
3. the present invention realizes the reuse of municipal middle water and steel production waste water, sewage discharge is greatly reduced, is saved
New water consumption solves the problems, such as iron and steel enterprise's shortage of water resources, reduces iron and steel enterprise's operating cost, realizes water resource
Sustainable development avoids serious problem of environmental pollution, has important economic benefit and social environment benefit.
Description of the drawings
Fig. 1 is the total system schematic diagram of the present invention.
Fig. 2 is the primary wastewater processing system schematic diagram of the present invention（That is level-one sewerage disposing system schematic）.
Fig. 3 is the two level advanced treatment system schematic diagram of the present invention.
Fig. 4 is the three-level desalting system schematic diagram of the present invention.
Specific implementation mode：
The municipal middle water that municipal sewage plant is discharged the present invention is by level-one sewerage disposing system, two level advanced treating
Clean circulating water pipe network and new grid of the grading recycle in iron and steel enterprise after system two-stage treatment, while steel production waste water being passed through
After primary wastewater processing system, two level advanced treatment system, three-level desalting system tertiary treatment grading recycle in iron and steel enterprise from
Body.By the way of graded combination processing, water treatment facilities realize altogether the processing procedure of municipal middle water and steel production waste water
It enjoys, processing capacity realizes elastification, and dosing, sludge dewatering and filter back washing system, which are realized, to be shared.Difference proposed by the present invention
Reusing plan enables recycle-water to meet a variety of water demands of iron and steel enterprise, really realizes the replacement of industrial water, not only realizes
The reuse of municipal middle water and wastewater of steel industry, and sewage discharge is greatly reduced, new water consumption has been saved, has solved steel
The problem of enterprise's shortage of water resources, reduces iron and steel enterprise's operating cost, realizes the sustainable development of water resource, avoids tight
The problem of environmental pollution of weight has important economic benefit and social environment benefit.
Following further describes the present invention with reference to the drawings：
As shown in Figure 1, the present invention proposes a kind of municipal middle water and steel production waste water is combined and staged is back to steel enterprise
The system of industry, the system include municipal middle water processing system, wastewater of steel industry processing system and iron and steel enterprise's reclaiming system three
Part, municipal middle water processing system connect iron and steel enterprise's reclaiming system, and wastewater of steel industry processing system connects iron and steel enterprise and returns
Use system.
Municipal sewage plant's outlet side passes through piping connection level-one sewerage disposing system, the row of level-one sewerage disposing system
Outlet is divided into two branches, and a branch connects two level advanced treatment system, another branch connects the clean circulating water of iron and steel enterprise
Pipe network；The outlet side of two level advanced treatment system is separately connected the clean circulating water pipe network of iron and steel enterprise and new grid；Iron and steel enterprise
Outlet side connect primary wastewater processing system, the outlet side of primary wastewater processing system is divided into two branches, and a branch connects
The clean circulating water pipe network of iron and steel enterprise is connect, another branch connects two level advanced treatment system；The discharge of two level advanced treatment system
End is divided into three branches, the clean circulating water pipe network of a branch connection iron and steel enterprise, another branch connects the new water of iron and steel enterprise
Pipe network, third branch connect three-level desalting system；The outlet side of three-level desalting system is divided into two branches, a branch connection
The new grid of iron and steel enterprise, another branch connect the desalination grid of iron and steel enterprise.
Primary wastewater processing system includes grid, and grid connects regulating reservoir, and regulating reservoir connection carries turn on pump station, carries turn on pump station company
Primary sedimentation basin is connect, primary sedimentation basin connects secondary clarifier, and secondary sedimentation tank connects sand filter, and sand filter connects clear water reserviors,
Clear water reserviors are separately connected clean circulating water pipe network and two level advanced treatment system；The blowdown end of primary sedimentation basin and secondary clarifier connects
Sludge digestion tank is connect, sludge digestion tank is separately connected regulating reservoir and filter press.
Two level advanced treatment system includes distribution well, and distribution well connects high efficiency clarification tank, and high efficiency clarification tank is separately connected V-type
Filter tank and sludge pump, sludge pump connect filter press, and V-type filter tank connects sterilization pool, and sterilization pool connects clear water reserviors, and clear water reserviors connect respectively
Connect clean circulating water pipe network, new grid and three-level desalting system.
Three-level desalting system includes self-cleaning filter, and self-cleaning filter connects ultrafiltration apparatus, and ultrafiltration apparatus connection is anti-
Booster pump is permeated, reverse osmosis booster pump connects cartridge filter, and cartridge filter connects high-pressure pump, and high-pressure pump connects reverse osmosis dress
It sets, reverse osmosis unit is separately connected desalination pond and strong brine pond, and desalination pond is separately connected desalination grid and new grid.
By municipal sewage plant discharge industrial wastewater by primary wastewater processing system, two level advanced treatment system,
Grading recycle is in iron and steel enterprise itself after three-level desalting system tertiary treatment；The secondary effluent conduct of municipal sewage plant's discharge
The raw water of municipal middle water reuse after level-one sewerage disposing system, two level advanced treatment system two-stage treatment grading recycle in steel
The clean circulating water pipe network and new grid of iron enterprise；The industrial wastewater of iron and steel enterprise's discharge is by primary wastewater processing system, two level
Grading recycle is in iron and steel enterprise itself after advanced treatment system, three-level desalting system tertiary treatment.
The processing procedure of the municipal middle water and steel production waste water is by the way of graded combination processing, municipal middle water
Two-stage treatment, wastewater of steel industry is divided to divide tertiary treatment, water treatment facilities, which are realized, to be shared, and the processing ratio of water at different levels can be according to enterprise
Industry requires Joint regulation with water.
Wherein the level-one sewerage disposing system of municipal middle water processing and the primary wastewater processing system of wastewater of steel industry processing
For system using identical treatment process, it can be achieved that Combined Treatment waste water, the setting of processing equipment sub-module can be according to municipal middle water and work
The water ratio adjustment module ratio of industry waste water shares processing equipment, and dosing, sludge dewatering and filter back washing system share.
The two level advanced treatment system of municipal middle water processing and the two level advanced treatment system of wastewater of steel industry processing are adopted
It, can be according to municipal middle water and Industry Waste with identical treatment process, it can be achieved that Combined Treatment waste water, processing equipment sub-module are arranged
The water ratio adjustment module ratio of water shares processing equipment, and dosing, sludge dewatering and filter back washing system share.
By the way of grading recycle, municipal middle water is back to use iron and steel enterprise for the reuse of municipal middle water and steel production waste water
Clean circulating water pipe network and new grid, industrial effluent reusing to iron and steel enterprise's clean circulating water pipe network, new grid and desalination grid.
Different Treated sewage reusing schemes：Both can by before two level advanced treating with the new water after advanced treating by a certain percentage
New water after advanced treating, can also be directly fed the new water of iron and steel enterprise by supplement water of the reuse as clean circulating water again after mixing
Pipe network.Both after being mixed in a certain ratio with the demineralized water after desalting system before three-level desalting system again reuse as new water
Supplement water, the demineralized water after desalting system can also be directly fed to the desalination grid of iron and steel enterprise.The selection of scheme is
It is required using the enterprise water use and water quality situation is foundation.If the enterprise needs a large amount of demineralized waters, three-level desalting system
Treated demineralized water with regard to direct reuse in enterprise, if the demineralized water that the enterprise need not be so more, you can selection is by desalination
Water mixes with the new water that two level advanced treatment system generates and is back to the enterprise together；If the enterprise needs a large amount of new water, that
Two level advanced treatment system treated new water with regard to direct reuse in enterprise, if the new water that the enterprise need not be so more,
It may be selected new water and primary wastewater（Middle water）The purified water mixing that processing system generates is back to the enterprise together.
As shown in Fig. 2, the primary wastewater processing system（That is level-one sewerage disposing system）Specific implementation mode be：
The city secondary effluent of municipal sewage plant's discharge or the industrial wastewater of iron and steel enterprise's discharge are introduced into grid and go in water removal
Impurity enters regulating reservoir homogeneous, measures, carries out runoff investigation later, the blender of setting relatively high power in regulating reservoir, prevents
Grain object largely deposits herein, influences pond body volume and increases management difficulty, while oil skimming is arranged in pond and scrapes slag facility, periodically scrapes
Skim the petroleum-type for the water float that gives up；Again by Boosting pumping station be sent to primary sedimentation basin except carry in decontaminated water can Direct precipitation mud
The impurity such as sand reduce suspension object amount and sludge quantity into follow-up equipment, while increasing in sedimentation basin dosing coagulant and precipitating；It
Enter secondary clarifier afterwards, flocculant be added, precipitation removes oil removal, part ion and organic matter, and after the adjustment after pH value from
It is flow to sand filter filtering, filter tank water outlet enters clear water reserviors after sterilizing, and the purified water of clear water reserviors is sent to steel by clarified water pump
The clean circulating water pipe network and two level advanced treatment system of enterprise；Primary sedimentation basin and the sludge of secondary clarifier discharge are introduced into sludge
Digester makes sludge constantly be concentrated, be fermented by anaerobic digestion, further Degradation and Transformation, reduces surplus sludge volume, most
It is transported outward afterwards at dry mud by filter press dehydration, desiccation, while the supernatant of sludge-tank is back to regulating reservoir and handles again.
As shown in figure 3, the specific implementation mode of the two level advanced treatment system is：The purified water of coagulation system
Water initially enters distribution well, by entering high efficiency clarification tank after matching mill weir and proportional assignment；High efficiency clarification tank is collection dosing
Mixing, reaction, clarification, sludge condensation are in the efficient water treatment building of one, which employs thickened sludge reflux cycle and tiltedly
Pipe sedimentation removes give up water part suspended matter, COD, BOD by dosing coagulant, flocculation aid and milk of lime5, the dirts such as oil
Impurity, temporary hardness are contaminated, and flowing to V-type filter tank further removes the pollutants such as SS and colloid certainly after pH value after the adjustment；Filter tank goes out
Water, which enters after sterilization pool sterilizing, flows into clear water reserviors, the new water of clear water reserviors be sent to by clarified water pump iron and steel enterprise new grid,
Three-level desalting system and return are sent to clean circulating water pipe network after being mixed with purified water；Since setting sludge reflux makes sludge and water
Time of contact is elongated, first, making the dosage low compared with traditional handicraft 25% of medicament, effectively save processing cost, second is that can be effective
The impact load of water is resisted, more stable effluent characteristics still can be kept after water, water quality mutation in a short time, third, from pond
The sludge of interior discharge be not necessarily into concentration basin or dosing, directly by sludge pump enter filter press dehydration, desiccation transported outward at dry mud, can
Reduce Treatment of Sludge expense.
As shown in figure 4, the specific implementation mode of the three-level desalination processing system is：The new water of secondary treatment system comes
Water removes tiny SS and colloid after water pump lifting into self-cleaning filter, and subsequently into ultrafiltration apparatus, ultrafiltration is main
The impurities in water such as SS, colloid, the bacterium that removal sand filtration can not remove, ensure SDI<3；Ultra-filtration water is carried by reverse osmosis booster pump
It rises and enters cartridge filter, then enter reverse osmosis unit desalination through high-pressure pump pressurization, reverse osmosis produced water enters desalination pond, leads to
Desalination grid is transported to for a pump part outside crossing, part return is sent to new grid after being mixed with new water；Reverse osmosis generation
Strong brine enters strong brine pond by its own overbottom pressure, is recycled in steel enterprise sintering, flushing cinder etc..
Conclusion：
The present invention is back to iron and steel enterprise using municipal middle water as new replacement water source after classification is handled, and steel is produced
It is back to iron and steel enterprise itself after the industrial wastewater classification processing of process discharge.It is truly realized the replacement of industrial water, not only
The reuse of municipal middle water and wastewater of steel industry is realized, and greatly reduces sewage discharge, has saved new water consumption, is solved
It the problem of iron and steel enterprise's shortage of water resources, iron and steel enterprise's operating cost is reduced, realizes the sustainable development of water resource, keeps away
Serious problem of environmental pollution is exempted from, there is important economic benefit and social environment benefit.
Claims (9)
1. a kind of municipal middle water produces the combined and staged system for being back to iron and steel enterprise of waste water with steel, it is characterised in that：This is
System includes municipal middle water processing system, wastewater of steel industry processing system and iron and steel enterprise's reclaiming system three parts, municipal middle water
Processing system connects iron and steel enterprise's reclaiming system, and wastewater of steel industry processing system connects iron and steel enterprise's reclaiming system；City is dirty
Water treatment plant's outlet side is divided into two branch by piping connection level-one sewerage disposing system, the outlet side of level-one sewerage disposing system
Road, a branch connect two level advanced treatment system, another branch connects the clean circulating water pipe network of iron and steel enterprise；Two level depth
The outlet side of reason system is separately connected the clean circulating water pipe network of iron and steel enterprise and new grid；The outlet side of iron and steel enterprise connects level-one
The outlet side of waste water treatment system, primary wastewater processing system is divided into two branches, the net ring of a branch connection iron and steel enterprise
Grid, another branch connect two level advanced treatment system；The outlet side of two level advanced treatment system is divided into three branches, and one
The clean circulating water pipe network of a branch connection iron and steel enterprise, another branch connect the new grid of iron and steel enterprise, and third branch connects
Connect three-level desalting system；The outlet side of three-level desalting system is divided into two branches, the new water pipe of a branch connection iron and steel enterprise
Net, another branch connect the desalination grid of iron and steel enterprise；
Primary wastewater processing system includes grid, and grid connects regulating reservoir, and regulating reservoir connection carries turn on pump station, proposes turn on pump station connection one
Secondary sedimentation basin, primary sedimentation basin connect secondary clarifier, and secondary sedimentation tank connects sand filter, and sand filter connects clear water reserviors, clear water
Pond is separately connected clean circulating water pipe network and two level advanced treatment system；The blowdown end of primary sedimentation basin and secondary clarifier is all connected with dirt
Mud digester, sludge digestion tank are separately connected regulating reservoir and filter press.
2. municipal middle water according to claim 1 produces the combined and staged system for being back to iron and steel enterprise of waste water with steel,
It is characterized in that：Two level advanced treatment system includes distribution well, and distribution well connects high efficiency clarification tank, and high efficiency clarification tank is separately connected
V-type filter tank and sludge pump, sludge pump connect filter press, and V-type filter tank connects sterilization pool, and sterilization pool connects clear water reserviors, clear water reserviors point
It Lian Jie not clean circulating water pipe network, new grid and three-level desalting system.
3. municipal middle water according to claim 1 produces the combined and staged system for being back to iron and steel enterprise of waste water with steel,
It is characterized in that：Three-level desalting system includes self-cleaning filter, and self-cleaning filter connects ultrafiltration apparatus, ultrafiltration apparatus connection
Reverse osmosis booster pump, reverse osmosis booster pump connect cartridge filter, and cartridge filter connects high-pressure pump, and high-pressure pump connection is reverse osmosis
Device, reverse osmosis unit are separately connected desalination pond and strong brine pond, and desalination pond is separately connected desalination grid and new water pipe
Net.
4. a kind of system described in claim 1 is by municipal middle water and the combined and staged iron and steel enterprise that is back to of steel production waste water
Technique, it is characterised in that：By the industrial wastewater of municipal sewage plant's discharge by primary wastewater processing system, two level depth
Grading recycle is in iron and steel enterprise itself after reason system, three-level desalting system tertiary treatment；The two level of municipal sewage plant's discharge
It is discharged and is classified after level-one sewerage disposing system, two level advanced treatment system two-stage treatment as the raw water of municipal middle water reuse
It is back to the clean circulating water pipe network of iron and steel enterprise and new grid；The industrial wastewater of iron and steel enterprise's discharge passes through primary wastewater processing system
Grading recycle is in iron and steel enterprise itself after system, two level advanced treatment system, three-level desalting system tertiary treatment.
5. municipal middle water according to claim 4 produces the combined and staged technique for being back to iron and steel enterprise of waste water with steel,
It is characterized in that：The processing procedure of municipal middle water and steel production waste water is by the way of graded combination processing, municipal middle water point
Two-stage treatment, wastewater of steel industry divide tertiary treatment, and water treatment facilities, which are realized, to be shared, and the processing ratio of water at different levels is used according to enterprise
Water requires Joint regulation.
6. municipal middle water according to claim 4 produces the combined and staged technique for being back to iron and steel enterprise of waste water with steel,
It is characterized in that：The level-one sewerage disposing system and the primary wastewater of wastewater of steel industry processing of the municipal middle water processing are handled
System uses identical treatment process, realizes Combined Treatment waste water；Processing equipment sub-module is arranged, according to municipal middle water and industry
The water ratio adjustment module ratio of waste water shares processing equipment, and dosing, sludge dewatering and filter back washing system share.
7. municipal middle water according to claim 4 produces the combined and staged technique for being back to iron and steel enterprise of waste water with steel,
It is characterized in that：The two level advanced treating of the two level advanced treatment system and wastewater of steel industry processing of the municipal middle water processing
System uses identical treatment process, realizes Combined Treatment waste water；Processing equipment sub-module is arranged, according to municipal middle water and industry
The water ratio adjustment module ratio of waste water shares processing equipment, and dosing, sludge dewatering and filter back washing system share.
8. municipal middle water according to claim 4 produces the combined and staged technique for being back to iron and steel enterprise of waste water with steel,
It is characterized in that：By the way of grading recycle, municipal middle water is back to use steel for the reuse of municipal middle water and steel production waste water
Enterprise's clean circulating water pipe network and new grid, industrial effluent reusing to iron and steel enterprise's clean circulating water pipe network, new grid and desalination water pipe
Net.
9. the municipal middle water described in claim 4 produces the combined and staged technique for being back to iron and steel enterprise of waste water with steel,
It is characterized in that：The method of Treated sewage reusing be after being mixed in required ratio with the new water after advanced treating before two level advanced treating again
Supplement water of the reuse as clean circulating water, or the new water after advanced treating is directly fed to the new grid of iron and steel enterprise；By three-level
Supplement water of the reuse as new water again after being mixed in required ratio with the demineralized water after desalting system before desalting system, or by desalination
Demineralized water after system directly feeds the desalination grid of iron and steel enterprise.
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| CN201510832792.3A CN105271623B (en) | 2015-11-26 | 2015-11-26 | Municipal middle water with steel wastewater is combined and staged is back to iron and steel enterprise's system and technique |
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| CN201510832792.3A CN105271623B (en) | 2015-11-26 | 2015-11-26 | Municipal middle water with steel wastewater is combined and staged is back to iron and steel enterprise's system and technique |
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| CN105271623B true CN105271623B (en) | 2018-10-23 |
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| CN107840499B (en) * | 2017-10-31 | 2023-11-10 | 上海市政工程设计研究总院（集团）有限公司 | Combined treatment device for reuse water of water works and water treatment process of combined treatment device |
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| CN112479400A (en) * | 2020-11-30 | 2021-03-12 | 安徽节源环保科技有限公司 | Recycling and circulating process system for steel wastewater and domestic sewage |
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