CN105776754A - Plant papermaking sewage treatment system - Google Patents

Plant papermaking sewage treatment system Download PDF

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Publication number
CN105776754A
CN105776754A CN201610236039.2A CN201610236039A CN105776754A CN 105776754 A CN105776754 A CN 105776754A CN 201610236039 A CN201610236039 A CN 201610236039A CN 105776754 A CN105776754 A CN 105776754A
Authority
CN
China
Prior art keywords
tank
outlet
sludge
sewage treatment
biochemistry pool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610236039.2A
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Chinese (zh)
Inventor
姜兆宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGXI HONGTAI ELECTRONIC INFORMATION MATERIAL Co Ltd
Original Assignee
JIANGXI HONGTAI ELECTRONIC INFORMATION MATERIAL Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JIANGXI HONGTAI ELECTRONIC INFORMATION MATERIAL Co Ltd filed Critical JIANGXI HONGTAI ELECTRONIC INFORMATION MATERIAL Co Ltd
Priority to CN201610236039.2A priority Critical patent/CN105776754A/en
Publication of CN105776754A publication Critical patent/CN105776754A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/26Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
    • C02F2103/28Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry

Abstract

The invention relates to industrial purification equipment, in particular to a plant papermaking sewage treatment system.Sludge-water separation efficiency and quality of the gas flotation method adopted in the system are much higher than those of the precipitation method, and the content of sludge or suspended matter in water discharged form a gas floatation tank is much lower than that of a precipitation tank; in this way, by arranging the gas floatation tank in front of a biochemical pool before sewage discharge, the amount of non-effective sludge brought into the biochemical pool along with wastewater can be reduced, the pollution load of water input into the biochemical pool is reduced, and the biochemical treatment efficiency of the biochemical pool is improved; besides, the content of suspended matter in finally discharged water can be effectively reduced, and the unit sewage treatment capacity of the system is improved; meanwhile, due to the fact that the gas floatation tank is simple in structure, low in investment and small in occupied space, both land and investment are saved for a papermaking plant with land lacking problem.

Description

A kind of factory papermaking sewage treatment system
Technical field
The present invention relates to Industrial cleaning facility equipment, specifically a kind of factory papermaking sewage treatment system.
Background technology
In wet papermaking factory, from slurrying to papermaking, each process is required for using and discharge substantial amounts of water, the water discharged is called paper waste, except waste water participates in recycling except a part of mthod of white water from paper making, unnecessary waste water needs to reach sewage drainage standard through process and could outer arrange, and therefore each Pulp And Papermaking Mill has sewage treatment plant or sewage treatment plant.Must having alkali collection facility in the factory utilizing wood chip or rice and wheat straw pulping, the black liquor of steaming and decocting wood chip or the generation of rice wheat straw is processed by alkali collection facility, and middle-stage wastewater and mthod of white water from paper making enter sewage disposal system and process;Use the factory of commodity purchased slurry papermaking, it does not have pulping process, therefore do not need alkali collection, but the waste water produced in production process also must through materialization, biochemical treatment ability qualified discharge.
But existing sewage disposal system processes and is generally adopted the sedimentation method, its efficiency is low, weak effect, and sludge settling process needs the longer time of staying, when paper mill cannot build sufficiently large sedimentation tank because place is little, sedimentation tank water outlet just can be carried a part of mud or float unavoidably.And materialized mud enters biochemistry pool and not only increases the pollutional load of biochemistry pool, and cause invalid mud in biochemistry pool to increase, reduce biochemical efficiency;If afterbody sedimentation tank and final deposition pool are big not, then aqueous suspension can be caused out to exceed standard and do not reach discharge standard;Mud cake landfill disposal can cause secondary pollution simultaneously.
Summary of the invention
It is an object of the invention to optimize the deficiency of existing production technology, adapt to reality need, it is provided that a kind of factory papermaking sewage treatment system.
In order to realize the purpose of the present invention, the technical solution used in the present invention is:
A kind of factory papermaking sewage treatment system, it is characterised in that it includes collecting-tank, regulating reservoir, reaction tank, flotation tank, biochemistry pool, sedimentation tank, the second flotation tank, sludge-tank, sludge paper board machine and connects pipeline,
Waste water inlet is connected with collecting-tank;Oblique net it is provided with between collecting-tank and regulating reservoir, the outlet at bottom of regulating reservoir is connected with the import at reaction tank top through the first sewage pump and blender, reaction tank upper outlet is connected with the import of flotation tank, first flotation tank is provided with two outlets, the upper outlet of the first flotation tank is connected with sludge-tank through mud-scraping apparatus, the lower part outlet of the first flotation tank is connected with bottom biochemistry pool through the second sewage pump, the outlet of biochemistry pool is connected with sedimentation tank, the upper outlet of sedimentation tank is connected with the second flotation tank, second flotation tank is provided with two outlets, the upper outlet of the second flotation tank is connected with sludge-tank through mud-scraping apparatus, the lower part outlet of the second flotation tank is connected with three-way valve through clarified water pump, the outlet of sludge-tank is connected with sludge paper board machine.
In described biochemistry pool, level is provided with an aerated conduit, the aerobic section being arranged above biochemistry pool of aerated conduit, and lower section is the anaerobism section of biochemistry pool.
Described oblique net is arranged on the side, top of regulating reservoir by cross beam support;Tiltedly the tilt outlet of net is provided with fiber recovery pond near the side of regulating reservoir.
Described reaction tank is positioned at the top of the first flotation tank, and the water inlet end of the first flotation tank and the second flotation tank is equipped with molten gas release device.
The wastewater outlet of described biochemistry pool, the wastewater outlet of sedimentation tank and the wastewater outlet of the second flotation tank are arranged for gravity flow low by height;
The aerated conduit of described biochemistry pool is arranged on cell body 1/4 equal-height position, and aerated conduit is connected with compressed air hose.
The bottom of described sedimentation tank is provided with sludge outlet, and sludge outlet, through the first sludge pump and three-way valve, is back to biochemistry pool on the one hand, is connected with sludge-tank on the other hand.
Described blender has two, respectively the first blender and the second blender, the first blender and the second blender is equipped with medicament add mouth.
Being additionally provided with the 3rd blender on the outlet of described sludge-tank and the connecting line of sludge paper board machine, the 3rd blender is provided with medicament and adds mouth.
The present invention adopts By Bubble-floating Method mud-water separation efficiency and disintegrate-quality to be significantly larger than the sedimentation method, mud or suspension content in flotation tank water outlet are significantly less than the content in sedimentation tank water outlet, therefore before biochemistry pool and before sewage discharge, flotation tank is set, when not only can reduce waste water entrance biochemistry pool, invalid mud brings into, alleviate the pollutional load of biochemistry pool water inlet, the biochemical treatment efficiency of raising biochemistry pool, and can effectively reduce the suspension content of terminal water outlet, improve the unit sewage treatment capacity of system;Simultaneously because flotation tank simple in construction, invest little, take up an area little, the paper mill for place shortage, both can save the area, save again investment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
In figure, collecting-tank 1, oblique net 2, regulating reservoir 3, reaction tank 4, the first flotation tank 5, biochemistry pool 6, sedimentation tank 7, second flotation tank 8, sludge-tank 9, fiber recovery pond 10, sludge paper board machine 11, compressed air hose 12, the first sewage pump 31, the first blender 32, second blender 33, the second sewage pump 51, the first sludge pump 71, clarified water pump 81, the second sludge pump 91, the 3rd blender 92.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described:
Embodiment: referring to Fig. 1.
A kind of factory papermaking sewage treatment system, it is characterised in that it includes collecting-tank 1, regulating reservoir 3, reaction tank 4, flotation tank 5, biochemistry pool 6, sedimentation tank the 7, second flotation tank 8, sludge-tank 9, sludge paper board machine 11 and connects pipeline,
Waste water inlet is connected with collecting-tank 1;Oblique net 2 it is provided with between collecting-tank 1 and regulating reservoir 3, the outlet at bottom of regulating reservoir 3 is connected with the import at reaction tank 4 top through the first sewage pump 31 and blender, reaction tank 4 upper outlet is connected with the import of flotation tank 5, first flotation tank 5 is provided with two outlets, the upper outlet of the first flotation tank 5 is connected with sludge-tank 9 through mud-scraping apparatus, the lower part outlet of the first flotation tank 5 is through the second sewage pump 5) it is connected with bottom biochemistry pool 6, the outlet of biochemistry pool 6 is connected with sedimentation tank 7, the upper outlet of sedimentation tank 7 is connected with the second flotation tank 8, second flotation tank 8 is provided with two outlets, the upper outlet of the second flotation tank 8 is connected with sludge-tank 9 through mud-scraping apparatus, the lower part outlet of the second flotation tank 8 is connected with three-way valve through clarified water pump 81, the outlet of sludge-tank 9 is connected with sludge paper board machine 11.
In described biochemistry pool 6, level is provided with an aerated conduit, the aerobic section being arranged above biochemistry pool 6 of aerated conduit, and lower section is the anaerobism section of biochemistry pool 6.
Described oblique net 2 is arranged on the side, top of regulating reservoir 3 by cross beam support;The tilt outlet of oblique net 2 is provided with fiber recovery pond 10 near the side of regulating reservoir 3.
Described reaction tank 4 is positioned at the top of the first flotation tank 5, and the water inlet end of the first flotation tank 5 and the second flotation tank 8 is equipped with molten gas release device.
The wastewater outlet of described biochemistry pool 6, the wastewater outlet of sedimentation tank 7 and the wastewater outlet of the second flotation tank 8 are arranged for gravity flow low by height.
The aerated conduit of described biochemistry pool 6 is arranged on cell body 1/4 equal-height position, and aerated conduit is connected with compressed air hose 12.
The bottom of described sedimentation tank 7 is provided with sludge outlet, and sludge outlet, through the first sludge pump 71 and three-way valve, is back to biochemistry pool 6 on the one hand, is connected with sludge-tank 9 on the other hand.
Described blender has two, respectively the first blender 32 and the second blender 33, the first blender 32 and the second blender 33 is equipped with medicament and adds mouth.
Being additionally provided with the 3rd blender 92 on the outlet of described sludge-tank 9 and the connecting line of sludge paper board machine 11, the 3rd blender 92 is provided with medicament and adds mouth.
Waste water of the present invention flows into collecting-tank 1 by gravity flow after grid, waste water by sewage pump carry to the tank of oblique net 2 upper end and by tank cross direction profiles stream to tiltedly online, the paper pulp fiber that oblique net filtration goes out slips into fiber recovery pond 10 and is sent back to slip house reuse by pulp pump, waste water then falls into regulating reservoir 3 through mesh, waste water is pumped by the first sewage pump 31 after overregulating after being mixed by dosing in chemical-dosing mixer and enters the further coagulating of reaction tank 4 and form cotton-shaped alumen ustum mud, and then gravity flow flows into the intake chamber of flotation tank 5;The molten gas release device of flotation tank 5 water inlet end discharges microbubble in pond, after cotton-shaped alumen ustum sludge absorption microbubble, buoyancy increases and rapidly increases to face, pond, scraped into sludge sump by the scraper plate of mud-scraping apparatus and flow into sludge-tank 9 by sludge pipe, the anaerobism section that waste water after mud-water separation is then delivered to bottom biochemistry pool 6 by the second sewage pump 51 of water side carries out anaerobic biological, wherein, a part of biochemical sludge is thrown in advance in biochemistry pool 6;nullThen aerobic section aerobic is slowly risen through biochemical,Period compressed air hose 12 discharges large quantity of air microbubble,Some microbubbles are assembled formation air pocket and waste water are risen agitaion,Make activated sludge in pond、Microbubble、Waste water three be sufficiently mixed,Waste water after biochemical treatment flows into sedimentation tank 7 from biochemistry pool upper end outlet and carries out precipitate and separate,A part of mud returns biochemistry pool 6 supplementing as activated sludge by the first sludge pump 71,Unnecessary mud carries to sludge-tank 9,The supernatant after precipitation flows into the second further solid-liquid separation of flotation tank 8 from upper end outlet,The molten gas release device of the second flotation tank 8 water inlet end discharges microbubble in pond,In waste water, after float absorption microbubble, buoyancy increases and rapidly increases to face, pond,Scraped into sludge sump by the scraper plate of mud-scraping apparatus and flow into sludge-tank 9 by sludge pipe,Clear water then sends into workshop reuse or the three-way valve qualified discharge opening on clarified water pump inlet pipeline by clarified water pump 81.Mud in sludge-tank 9 utilizes sludge paper board machine to make mud cardboard after dosing and takes out for making carton or producing Concha Arcae boxboard wrapping paper etc. and be reused, and reduces secondary pollution.
The present invention adopts By Bubble-floating Method mud-water separation efficiency and disintegrate-quality to be significantly larger than the sedimentation method, mud or suspension content in flotation tank water outlet are significantly less than the content in sedimentation tank water outlet, therefore before biochemistry pool and before sewage discharge, flotation tank is set, when not only can reduce waste water entrance biochemistry pool, invalid mud brings into, alleviate the pollutional load of biochemistry pool water inlet, the biochemical treatment efficiency of raising biochemistry pool, and can effectively reduce the suspension content of terminal water outlet, improve the unit sewage treatment capacity of system;Simultaneously because flotation tank simple in construction, invest little, take up an area little, the paper mill for place shortage, both can save the area, save again investment.

Claims (9)

1. factory's papermaking sewage treatment system, it is characterized in that it includes collecting-tank (1), regulating reservoir (3), reaction tank (4), flotation tank (5), biochemistry pool (6), sedimentation tank (7), the second flotation tank (8), sludge-tank (9), sludge paper board machine (11) and connects pipeline
Waste water inlet is connected with collecting-tank (1);nullOblique net (2) it is provided with between collecting-tank (1) and regulating reservoir (3),The outlet at bottom of regulating reservoir (3) is connected with the import at reaction tank (4) top through the first sewage pump (31) and blender,Reaction tank (4) upper outlet is connected with the import of flotation tank (5),First flotation tank (5) is provided with two outlets,The upper outlet of the first flotation tank (5) is connected with sludge-tank (9) through mud-scraping apparatus,The lower part outlet of the first flotation tank (5) is connected with biochemistry pool (6) bottom through the second sewage pump (51),The outlet of biochemistry pool (6) is connected with sedimentation tank (7),The upper outlet of sedimentation tank (7) is connected with the second flotation tank (8),Second flotation tank (8) is provided with two outlets,The upper outlet of the second flotation tank (8) is connected with sludge-tank (9) through mud-scraping apparatus,The lower part outlet of the second flotation tank (8) is connected with three-way valve through clarified water pump (81),The outlet of sludge-tank (9) is connected with sludge paper board machine (11).
2. a kind of factory according to claim 1 papermaking sewage treatment system, it is characterized in that, described biochemistry pool (6) interior level is provided with an aerated conduit, the aerobic section being arranged above biochemistry pool (6) of aerated conduit, and lower section is the anaerobism section of biochemistry pool (6).
3. a kind of factory according to claim 1 papermaking sewage treatment system, it is characterised in that described oblique net (2) is arranged on the side, top of regulating reservoir (3) by cross beam support;The tilt outlet of oblique net (2) is provided with fiber recovery pond (10) near the side of regulating reservoir (3).
4. a kind of factory according to claim 1 papermaking sewage treatment system, it is characterized in that, described reaction tank (4) is positioned at the top of the first flotation tank (5), and the water inlet end of the first flotation tank (5) and the second flotation tank (8) is equipped with molten gas release device.
5. a kind of factory according to claim 1 papermaking sewage treatment system, it is characterized in that, the wastewater outlet of described biochemistry pool (6), the wastewater outlet of sedimentation tank (7) and the wastewater outlet of the second flotation tank (8) are arranged for gravity flow low by height.
6. a kind of factory according to claim 2 papermaking sewage treatment system, it is characterised in that the aerated conduit of described biochemistry pool (6) is arranged on cell body 1/4 equal-height position, and aerated conduit is connected with compressed air hose (12).
7. a kind of factory according to claim 1 papermaking sewage treatment system, it is characterized in that, the bottom of described sedimentation tank (7) is provided with sludge outlet, sludge outlet is through the first sludge pump (71) and three-way valve, it is back to biochemistry pool (6) on the one hand, is connected with sludge-tank (9) on the other hand.
8. a kind of factory according to claim 1 papermaking sewage treatment system, it is characterized in that, described blender has two, respectively the first blender (32) and the second blender (33), the first blender (32) and the second blender (33) is equipped with medicament add mouth.
9. a kind of factory according to claim 1 papermaking sewage treatment system, it is characterized in that, being additionally provided with the 3rd blender (92) on the outlet of described sludge-tank (9) and the connecting line of sludge paper board machine (11), the 3rd blender (92) is provided with medicament and adds mouth.
CN201610236039.2A 2016-04-18 2016-04-18 Plant papermaking sewage treatment system Pending CN105776754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610236039.2A CN105776754A (en) 2016-04-18 2016-04-18 Plant papermaking sewage treatment system

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Application Number Priority Date Filing Date Title
CN201610236039.2A CN105776754A (en) 2016-04-18 2016-04-18 Plant papermaking sewage treatment system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019056408A1 (en) * 2017-09-20 2019-03-28 南通翔龙纸业有限公司 Tower-type pulp sedimentation pond

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Publication number Priority date Publication date Assignee Title
CN1792845A (en) * 2005-11-29 2006-06-28 山东丰源中科生态科技有限公司 Process for treating papermaking waste liquid of vapor blasting straw pulping
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CN103466884A (en) * 2013-09-12 2013-12-25 安徽省绿巨人环境技术有限公司 Process for treating waste paper pulping and papermaking waste water

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CN1792845A (en) * 2005-11-29 2006-06-28 山东丰源中科生态科技有限公司 Process for treating papermaking waste liquid of vapor blasting straw pulping
CN103058467A (en) * 2013-01-22 2013-04-24 富民宝地纸业有限公司 Water paper paper-making wastewater efficient treatment and comprehensive recycling method and device
CN103466884A (en) * 2013-09-12 2013-12-25 安徽省绿巨人环境技术有限公司 Process for treating waste paper pulping and papermaking waste water

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019056408A1 (en) * 2017-09-20 2019-03-28 南通翔龙纸业有限公司 Tower-type pulp sedimentation pond

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Application publication date: 20160720