CN106045049A - Integrated denitrification and dephosphorization system applied to treatment of rural sewage - Google Patents
Integrated denitrification and dephosphorization system applied to treatment of rural sewage Download PDFInfo
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- CN106045049A CN106045049A CN201610613895.5A CN201610613895A CN106045049A CN 106045049 A CN106045049 A CN 106045049A CN 201610613895 A CN201610613895 A CN 201610613895A CN 106045049 A CN106045049 A CN 106045049A
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- pond
- dephosphorization
- tank
- denitrification
- anaerobic
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- 239000010865 sewage Substances 0.000 title claims abstract description 38
- 239000010802 sludge Substances 0.000 claims abstract description 22
- 238000010992 reflux Methods 0.000 claims abstract description 5
- 230000010354 integration Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000010907 mechanical stirring Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 238000005276 aerator Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000004568 cement Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000009189 diving Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000007790 scraping Methods 0.000 claims 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 11
- 239000011574 phosphorus Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 9
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 abstract description 6
- 241000894006 Bacteria Species 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000001556 precipitation Methods 0.000 abstract 2
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 238000006396 nitration reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 229920000037 Polyproline Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses an integrated denitrification and dephosphorization system applied to treatment of rural sewage. The system comprises a pretreatment tank, an anaerobic tank, an anoxic tank, an aerobic tank and a precipitation tank. Due to the adoption of divided-flow sewage supply manner, the sewage can enter into the anaerobic tank and the anoxic tank; the purposes of redistributing a carbon source in the sewage and effectively utilizing the carbon source can be achieved; meanwhile, an inner reflux system is arranged between the anaerobic tank and the anoxic tank, so that denitrification and dephosphorization bacteria realize denitrification and dephosphorization in the environment with alternant aerobic and anaerobic conditions. In addition, a nitration solution in the aerobic tank and active sludge in the precipitation tank are returned into the anoxic tank instead of the anaerobic tank, the denitrification and dephosphorization effects are carried out in the anoxic tank; the dephosphorization effect can be achieved; the content of nitrite nitrogen and nitrate nitrogen in the sewage can be reduced; the inhibition effects of nitrite nitrogen and nitrate nitrogen on anaerobic phosphorus-releasing reaction can be reduced; the denitrification and dephosphorization bacteria can fully release phosphorus under the anaerobic condition; the denitrification and dephosphorization efficiency of the system can be improved.
Description
Technical field
The present invention relates to a kind of integration denitrification and dephosphorization system being applicable to rural sewage treatment.
Background technology
Along with the quickening day by day of China's Development of China's Urbanization, the living standards of the people of rural area improve constantly, water consumption by
Year improves, and adds the discharge capacity of country sewage simultaneously.Without corresponding sewage disposal system to this kind of sewage at
Reason, nutrient substance, pesticide and other Organic substances such as substantial amounts of nitrogen, phosphorus are directly discharged in field ditch, river and lake, it will make water
Algae in body obtains the nutrition and sharp increase enriched, and serious meeting makes water hypoxia, water quality deterioration, black smelly phenomenon occurs,
This produces the biggest harm to ecological environment and health.Therefore, supporting rural sewage treatment system construction seems particularly
Important, the most also it is the committed step preventing natural water to pollute, prevent black smelly phenomenon from occurring.
At present, the process of country sewage is because being restricted by factors such as geographical position, it is difficult to be incorporated to urban pipe network, needs on the spot
Processing, to take rural holding area less, therefore, compact conformation, operation are conveniently, floor space is little, effluent quality is high
Sewage disposal system urgently develop, this will have good practical significance to rural sewage treatment.
Summary of the invention
For overcoming drawbacks described above, it is an object of the invention to propose little, easy to maintenance being applicable to of a kind of floor space
The integration denitrification and dephosphorization system of rural sewage treatment.
For reaching above-mentioned purpose, the integration denitrification and dephosphorization system of the rural sewage treatment of the present invention, described system by
The following each unit composition that water proof barricade separates and is sequentially connected with: pretreatment tank, anaerobic pond, anoxic pond, Aerobic Pond and stillpot；
Connected by overflow mechanism between each unit；Each unit is wholely set, and described system shell uses steel plate or cement sheet material system
Make.
It is also preferred that the left be provided with internal reflux system between anaerobic pond and anoxic pond；
Nitrification liquid return-flow system it is provided with between anoxic pond and Aerobic Pond；
Sludge recirculation system it is provided with, in order to the activated sludge of sedimentation tank is passed through sludge reflux between anoxic pond and stillpot
System flowback is to anoxic pond.
It is also preferred that the left in pretreatment tank installing submersible pump, for a part of sewage separation is entered into anoxic pond.
Scrape mud equipment it is also preferred that the left install in stillpot, in described stillpot, be provided with heavy bucket；Described scrapes mud
Activated sludge is scraped in heavy bucket by equipment.
It is also preferred that the left be respectively mounted one or several mechanical stirring device in pretreatment tank, anoxic pond.
It is also preferred that the left install semi soft packing in described anaerobic pond, packing volume accounts for the 50%-70% that pond holds, with propping up
Frame supports；One or more jet mixers are being installed at the bottom of anaerobic pond simultaneously.
It is also preferred that the left be provided with portable suspending carrier in described Aerobic Pond；Described portable suspending carrier accounts for pond
The 20%-30% held, carrier proportion is 0.97-0.98kg/m3, porosity is more than 90%, and specific surface area is more than 500m2/m3；
Aerator is installed in Aerobic Pond.
Present invention process is simple, is only provided with pretreatment tank, anaerobic pond, anoxic pond, Aerobic Pond and stillpot, and exists respectively
Install in anaerobic pond and Aerobic Pond, added semi-soft packing and portable suspending carrier, by biomembrane and two kinds of works of activated sludge
Skill organically combines.This system uses the mode of distributing inlet, makes carbon source limited in rural sewage obtain fully
Utilize, not only increase the anti-load-bearing capacity of system and the denitrification dephosphorization ability of system, and dirty processing low-carbon-source agricultural
During water, it is not necessary to adding or add less carbon source and can obtain higher denitrogenation dephosphorizing efficiency, ammonia nitrogen removal frank reaches 98%, and total nitrogen goes
Except rate is more than 95%, total tp removal rate reaches 95%.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, illustrated embodiment is served only for explaining the present invention,
But the present invention is not limited to embodiment.Described method is conventional method if no special instructions.Described raw material is as without special
Do not mentionlet alone bright equal can be either commercially available from open.
Fig. 1 is the structural representation of the embodiment of the present invention.As it is shown in figure 1, the integration denitrification of a kind of rural sewage treatment
Dephosphorization system, including pretreatment tank 1, anaerobic pond 2, anoxic pond 3, Aerobic Pond 4, stillpot 5, this system can be applicable to low-carbon-source
Rural sewage treatment, it is possible to be applied to small town sewage disposal, Expressway Service, tourist attraction, nursing house and portion
The sewage disposals such as team post.
Being mounted with mechanical stirring device 6 and Water inlet shunt device 7 in pretreatment tank, wherein mechanical stirring device can make entrance
The sewage of system uniformly mixes；Part flow arrangement is in order to the part water inlet in pretreatment tank is further separated into anoxic pond, for
Denitrification dephosphorization effect in anoxic pond provides more carbon source.Another part water inlet in pretreatment tank is then overflow by therein
Certainly flowing into anaerobic pond carries out anaerobic phosphorus release effect on stream weir.
Anaerobic pond has added and has been made half soft cellulose filler 9 by polypropylene or polyethylene, diameter can be Ф 120mm,
Ф 150mm or Ф 200mm, installing space, specifically can be according to packed density regulation peace required during design between 30-100mm
Dress spacing；Specific surface area is at 25-110m2/m3.Packing layer accounts for the 50%-70% that total pond holds, it is therefore intended that extend mud age, abundant micro-
Biological species, improves anti-load-bearing capacity.Jet mixing device 8 is being installed at the bottom of pond, is not only being possible to prevent activated sludge to deposit, and
Activated sludge and sewage uniformly can be mixed, make activated sludge be fully contacted with the pollutant in sewage, improve pollutant
Removal ability.Sewage after anaerobic pond processes, through downflow weir from flowing into anoxic pond.
Utilize the mechanical stirring device in anoxic pond, activated sludge is uniformly mixed with sewage, make activated sludge and sewage
In pollutant be fully contacted, carry out denitrification dephosphorization reaction, on the one hand can utilize the effect of denitrifying phosphorus removing bacteria (DPAOs)
Absorb the phosphorus in sewage, on the other hand can reduce the content of Nitrite In Polluted Water nitrate nitrogen and nitrate nitrogen, in internal reflux system
Effect under, by the mixed-liquor return of the activated sludge in anoxic pond and sewage to anaerobic pond, make denitrifying phosphorus removing bacteria in anaerobism
With under the alternating action of anaerobic environment, it is achieved denitrification dephosphorization function, simultaneously can also reduce nitrite nitrogen and nitrate nitrogen
Inhibitory action to anaerobic phosphorus release reaction.Sewage after anoxic pond processes, through downflow weir from flowing into Aerobic Pond.
The 20%-30% held according to pond in Aerobic Pond adds portable suspending carrier 10, and this carrier is cylindrical, diameter
For 10mm or 20mm, being made up of polyethylene, proportion is 0.97-0.98kg/m3, porosity is more than 90%, and specific surface area is more than
500m2/m3, it is therefore intended that the nitrobacteria making the generation cycle longer is attached on suspending carrier, extends the sludge age of system, carries
The nitrification efficiency of high system.
Aerator 11 is installed in Aerobic Pond, provides sufficient oxygen for aerobic reaction.Additionally, arrange in Aerobic Pond
Nitrification liquid return-flow system, is back to anoxic pond by nitrite nitrogen produced by nitrifying process and nitrate nitrogen, removes for denitrification
Phosphorus effect provides more electron acceptor, and meanwhile, the polyP bacteria in activated sludge also can absorb in sewage under aerobic condition
Phosphorus, it is achieved dephosphorization function.Sewage after Aerobic Pond processes, through downflow weir from flowing into stillpot 5.
Install in stillpot 5 and scrape mud equipment 12, in described stillpot, be provided with heavy bucket；Described scrapes mud equipment
Activated sludge is scraped in heavy bucket.In stillpot, utilizing action of gravity to be separated by muddy water, supernatant is through outlet conduit
Entering water body, the activated sludge part precipitated is through sludge recirculation system, and being back to the operation that anoxic pond is system provides
More Biomass, it is ensured that being smoothed out of denitrification dephosphorization effect, another part activated sludge then waste disposal.
Using integration denitrification and dephosphorization system of the present invention to process country sewage, result is shown in Table 1.
In water outlet, COD, ammonia nitrogen, total nitrogen, total phosphorus all can reach People's Republic of China's " urban wastewater treatment firm pollutant emission standard "
(GB18918-2002) one-level A standard.
The table 1 integration denitrification and dephosphorization system disposition to country sewage
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (7)
1. the integration denitrification and dephosphorization system of a rural sewage treatment, it is characterised in that described system is divided by water proof barricade
Every and be sequentially connected with following each unit composition: pretreatment tank, anaerobic pond, anoxic pond, Aerobic Pond and stillpot；Wherein, each list
Unit is wholely set, and described system shell uses steel plate or cement sheet material to make；Connected by overflow mechanism between each unit.
Integration denitrification and dephosphorization system the most according to claim 1, it is characterised in that set between anaerobic pond and anoxic pond
There is internal reflux system；
Nitrification liquid return-flow system it is provided with between anoxic pond and Aerobic Pond；
Sludge recirculation system it is provided with, to be returned by sludge recirculation system by the activated sludge of sedimentation tank between anoxic pond and stillpot
It flow to anoxic pond.
Integration denitrification and dephosphorization system the most according to claim 1, it is characterised in that install diving in pretreatment tank
Pump, for entering into anoxic pond by a part of sewage separation.
Integration denitrification and dephosphorization system the most according to claim 1, it is characterised in that install in stillpot and scrape mud and set
Standby, in described stillpot, it is provided with heavy bucket；Activated sludge is scraped in heavy bucket by described mud equipment of scraping.
Integration denitrification and dephosphorization system the most according to claim 1, it is characterised in that in pretreatment tank and/or anoxic pond
The one or more mechanical stirring device of interior installation.
Integration denitrification and dephosphorization system the most according to claim 1, it is characterised in that install half in described anaerobic pond
Soft-filler, packing volume accounts for the 50%-70% that pond holds, supports with support；One or more penetrating is being installed at the bottom of anaerobic pond simultaneously
Streaming agitating device.
Integration denitrification and dephosphorization system the most according to claim 1, it is characterised in that be provided with in described Aerobic Pond
Portable suspending carrier；Described portable suspending carrier accounts for the 20%-30% that pond holds, and carrier proportion is 0.97-0.98kg/
m3, porosity is more than 90%, and specific surface area is more than 500m2/m3；
Aerator is installed in Aerobic Pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610613895.5A CN106045049A (en) | 2016-07-29 | 2016-07-29 | Integrated denitrification and dephosphorization system applied to treatment of rural sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610613895.5A CN106045049A (en) | 2016-07-29 | 2016-07-29 | Integrated denitrification and dephosphorization system applied to treatment of rural sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106045049A true CN106045049A (en) | 2016-10-26 |
Family
ID=57196974
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|---|---|---|---|
| CN201610613895.5A Pending CN106045049A (en) | 2016-07-29 | 2016-07-29 | Integrated denitrification and dephosphorization system applied to treatment of rural sewage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019169610A1 (en) * | 2018-03-08 | 2019-09-12 | 大连理工大学 | Method for upgrading and expanding sewage biological treatment process |
| CN110294568A (en) * | 2019-05-11 | 2019-10-01 | 浙江水艺环境科技有限公司 | One kind is for improveing UCT sewage treatment plant and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050087480A1 (en) * | 2002-02-28 | 2005-04-28 | Park Jong-Bok | Wastewater treatment apparatus and method for removing nitrogen and phosphorus |
| CN205328812U (en) * | 2016-01-11 | 2016-06-22 | 北京市市政工程设计研究总院有限公司 | Festival ground type treatment of domestic sewage integrated device |
-
2016
- 2016-07-29 CN CN201610613895.5A patent/CN106045049A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050087480A1 (en) * | 2002-02-28 | 2005-04-28 | Park Jong-Bok | Wastewater treatment apparatus and method for removing nitrogen and phosphorus |
| CN205328812U (en) * | 2016-01-11 | 2016-06-22 | 北京市市政工程设计研究总院有限公司 | Festival ground type treatment of domestic sewage integrated device |
Non-Patent Citations (1)
| Title |
|---|
| 郭姣: "进水方式与比例对UCT工艺脱氮除磷效果的影响", 《河南科学》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019169610A1 (en) * | 2018-03-08 | 2019-09-12 | 大连理工大学 | Method for upgrading and expanding sewage biological treatment process |
| CN110294568A (en) * | 2019-05-11 | 2019-10-01 | 浙江水艺环境科技有限公司 | One kind is for improveing UCT sewage treatment plant and method |
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Effective date of registration: 20220615 Address after: 243000 Fu Chang Industrial Park, 259 HSI Nan Road, Ma'anshan economic and Technological Development Zone, Anhui Applicant after: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Applicant after: HUATIAN NANJING ENGINEERING & TECHNOLOGY CORPORATION, MCC Address before: 243005 Hunan West Road, Ma'anshan, Ma'anshan, Anhui Applicant before: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Applicant before: MCC HUATIAN (ANHUI) ENERGY SAVING ENVIRONMENTAL PROTECTION RESEARCH INSTITUTE Co.,Ltd. |
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