CN105502660A - Reverse-flow type biological contact device - Google Patents

Reverse-flow type biological contact device Download PDF

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Publication number
CN105502660A
CN105502660A CN201610060044.2A CN201610060044A CN105502660A CN 105502660 A CN105502660 A CN 105502660A CN 201610060044 A CN201610060044 A CN 201610060044A CN 105502660 A CN105502660 A CN 105502660A
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CN
China
Prior art keywords
oxygen
biological
water
starved area
zone
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
CN201610060044.2A
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Chinese (zh)
Inventor
王文东
马翠
常妮妮
冯佩
王晓昌
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Publication date
Application filed by Xian University of Architecture and Technology filed Critical Xian University of Architecture and Technology
Priority to CN201610060044.2A priority Critical patent/CN105502660A/en
Publication of CN105502660A publication Critical patent/CN105502660A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/301Aerobic and anaerobic treatment in the same reactor
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/308Biological phosphorus removal
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds

Abstract

A reverse-flow type biological contact device comprises a biological contact tower, and a first anoxic zone, an anaerobic zone, a second anoxic zone and an aerobic zone are arranged in the biological contact tower from top to bottom. An air collecting cavity is formed in the top of the biological contact tower, a mud hopper is arranged at the bottom of the biological contact tower, a water inlet is formed in the upper portion of the part, between the air collecting cavity and the mud hopper, of the side wall of the biological contact tower, a water outlet is formed in the lower portion of the part, between the air collecting cavity and the mud hopper, of the side wall of the biological contact tower, and an aeration disc is arranged between the mud hopper and the aerobic zone. When the system runs, air moves upwards, enters the air collecting cavity and finally is discharged out of an air outlet pipe, wastewater enters from the water inlet, moves downwards and flows out of the water outlet in the lower portion, and easily-settling suspended solids or mud or disengaged biological films are discharged out of a mud outlet in the running process of the system. The anaerobic zone, the anoxic zones and the aerobic zone are arranged in the same biological contact tower at the same time, so that the effect of removing organic matter and nutritive salt such as nitrogen and phosphorus in water is intensified while suspended sediment is removed, the quality of outlet water is improved, the water treatment process is shortened, and good application and popularization prospects are achieved.

Description

A kind of return-flow type biological device
Technical field
The invention belongs to technical field of sewage, relate to the synchronous removal that can realize the nutritive salt such as suspended substance, organism and nitrogen phosphorus, particularly a kind of return-flow type biological device.
Background technology
Along with a large amount of discharges of trade effluent and city domestic sewage, make the pollution that the drinking water source in many areas is subject in various degree, water quality lack of water phenomenon is very serious, main manifestations is ammonia nitrogen, phosphorus concentration rises, dissolved oxygen declines, and organic contamination increases the weight of, and raw water quality is decline situation.Therefore, in this case, how reasonably to utilize existing water resources, carry out pre-treatment to contaminated former water, the security improving water supply quality just seems particularly important.Therefore, seeking new processing method, effectively remove the nitrogen phosphorus in water and organic pollutant, is one of subject matter of facing of current water-purifying process.In the preconditioning technique of micro-polluted raw, biological pre-treatment process is considered to one of the most effective technology, it is by means of the metabolic activity of microbial population, to the ammonia nitrogen in water, phosphorus, organic pollutant, nitrite and iron, the inorganic pollutants such as manganese are tentatively removed, so both improve the coagulating sedimentation performance of water, follow-up conventional processing is better played a role, also mitigate the load of conventional processing and successive depths treatment process unit, extend life cycle and the capacity of use of the materializing strategy techniques such as filtration or charcoal absorption, play water technology mass action most possibly, reduce water treatment expense, control the pollution of water better.
Summary of the invention
The object of the present invention is to provide a kind of return-flow type biological device, anaerobic zone, oxygen-starved area, aerobic zone are arranged on simultaneously in same biological contact oxidation tower, the synchronous removal of the nutritive salt such as suspended substance, organism and nitrogen phosphorus can be realized, can water treatment process be shortened, have a good application prospect; Meanwhile, this plant area area is little, construction cost is low, structure is simple, and the synchronous strengthening that can realize Organic substance in water and nitrogen phosphorus while completing precipitation function is removed, and has good capacity of resisting impact load.
To achieve these goals, the technical solution used in the present invention is:
A kind of return-flow type biological device, comprise biological tower 1, in described biological tower 1, oxygen-starved area one is set from top to bottom, anaerobic zone, oxygen-starved area two and aerobic zone, biological tower 1 top is provided with the air collecting chamber 2 of escape pipe 6, bottom is provided with the bucket 3 of mud mouth 17, the top of the sidewall of biological tower 1 between air collecting chamber 2 and bucket 3 arranges water-in, bottom sets out the mouth of a river 10, aeration plate 12 is arranged between described bucket 3 and aerobic zone, during system cloud gray model, upward motion of air, successively through aerobic zone, oxygen-starved area two, the gas produced in system operation enters air collecting chamber 2 and finally to discharge from escape pipe 6, sewage enters from water-in simultaneously, under gravity successively through oxygen-starved area one, anaerobic zone, oxygen-starved area two and aerobic zone, flow out from the water outlet 10 of bottom, easy precipitation suspended substance in process, mud or the microbial film that comes off are discharged from mud mouth 17.
Be provided with the elastic filler 4 being beneficial to microorganic adhesion and enrichment corresponding to anaerobic zone, oxygen-starved area and aerobic zone in described biological tower 1, the elastic filler 4 enrichment aerobic microbiological of aerobic zone, the elastic filler 4 enrichment amphimicrobe of oxygen-starved area, the elastic filler 4 enrichment obligate anaerobe of anaerobic zone.
The length of described biological tower 1 is enough to make anaerobic zone, oxygen-starved area and aerobic zone segmentation obvious, meets each section of normal environmental requirement of microorganism.
Also be provided with water distribution system 8 in described biological tower 1, described water distribution system 8 is the annular pipeline structure of built-in cross connecting passage, and its pipe section is semicircle, namely forms by semi-cylindrical long tube is bending.The water inlet pipe 7 of level is communicated with from water-in with water distribution system 8, and sewage enters water distribution system 8, falls oxygen-starved area one in biological tower 1 by overflow manner.
The sidewall being positioned at top, oxygen-starved area one in described biological tower 1 is provided with air inlet transverse tube 16, and air inlet transverse tube 16 is connected with aeration plate 12 by air inlet vertical tube 5, and air enters aeration plate 12 through air inlet transverse tube 16, air inlet vertical tube 5 successively, carries out aeration.
Described water outlet 10 connects a mouth of pipe of the threeway rising pipe 11 outside biological tower 1, wherein, second mouth of pipe of threeway rising pipe 11 connects one end of Digestive system return line 9, the other end of Digestive system return line 9 is connected to water distribution system in biological tower 1, realizes a part of water outlet as return digestion liquid.
The present invention also comprises online dynamic regulation aerating apparatus, described online dynamic regulation aerating apparatus comprises that the low DO Concentration Testing be laid between anaerobic zone and oxygen-starved area two pops one's head in 13, middle DO Concentration Testing between oxygen-starved area two and aerobic zone pops one's head in 14, each probe be all close to be arranged on biological tower 1 inwall on; Each probe connection control device, controller is connected with the setter of aeration plate 12.
Described low DO Concentration Testing is popped one's head in 13 sensing range DO<0.2mg/L,
Middle DO Concentration Testing is popped one's head in 14 sensing range 0.2mg/L<DO<0.5mg/L,
Low DO Concentration Testing probe 13 regulates operated pneumatic valve aperture by signal feedback aeration controller, guarantees that dissolved oxygen concentration bottom anaerobic zone is at about 0.2mg/L; Middle DO Concentration Testing probe 14 regulates operated pneumatic valve aperture by signal feedback, guarantees that dissolved oxygen concentration bottom oxygen-starved area is at about 0.5mg/L.
Compared with prior art, the present invention is reasonable in design, simple to operate; By being arranged in same biological contact oxidation tower in anaerobic zone, oxygen-starved area, aerobic zone simultaneously, have that floor space is little, construction cost is low, advantages of simple structure and simple; In the present invention, biological tower sufficiently long, anaerobic zone, oxygen-starved area, aerobic zone segmentation are obvious, enriched obligate microorganism in the elastic filler of different section, microbial film, because of excessive enrichment, exceedes elastic filler anchorage force and naturally comes off, and under water impact, biomembrane activity is high, and whole system has good capacity of resisting impact load all the time; The monitor value that the online dynamic regulation aerating apparatus of the present invention is popped one's head according to DO Concentration Testing can run aeration rate by automatic-adjusting device, saves energy consumption; The present invention arranges bucket at biological tower bottom, makes in water suspended substance and the mud that produced by anaerobic zone, oxygen-starved area, aerobic zone and the microbial film that comes off concentrate in bucket, and water outlet does not need to arrange settling tank separately, reduces floor space, reduces investment outlay.Therefore, the present invention, in the removal efficiency realizing enhancing while suspended substance precipitation removes function Organic substance in water, effectively improves the effluent quality of technique.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is water distribution system vertical view of the present invention.
Fig. 3 is the stereographic map that the present invention forms the pipeline of water distribution system.
Fig. 4 is aerating system schematic diagram of the present invention.
Embodiment
Embodiments of the present invention are described in detail below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of return-flow type biological device, comprises biological tower 1, arranges oxygen-starved area one, anaerobic zone, oxygen-starved area two and aerobic zone in biological tower 1 from top to bottom.
Biological tower 1 top is provided with the air collecting chamber 2 of escape pipe 6, the methane produced in gathering system operational process, N 2deng gas.Bottom is provided with the bucket 3 of mud mouth 17, and to make in water suspended substance and the mud produced by anaerobic zone, oxygen-starved area and aerobic zone or the microbial film that comes off concentrate in bucket 3, water outlet does not need to arrange settling tank separately.
The top of the sidewall of biological tower 1 between air collecting chamber 2 and bucket 3 arranges water-in, bottom sets out the mouth of a river 10, aeration plate 12 is arranged between bucket 3 and aerobic zone, during system cloud gray model, upward motion of air, successively through aerobic zone, oxygen-starved area two, the gas produced in system operation enters air collecting chamber 2 and finally to discharge from escape pipe 6, sewage enters from water-in simultaneously, under gravity successively through oxygen-starved area one, anaerobic zone, oxygen-starved area two and aerobic zone, flow out from the water outlet 10 of bottom, the material in bucket 3 is discharged from mud mouth 17.
Be provided with the elastic filler 4 being beneficial to microorganic adhesion and enrichment in biological tower 1 corresponding to anaerobic zone, oxygen-starved area and aerobic zone, be conducive to microorganism in the attachment of each section and enrichment.The elastic filler 4 enrichment aerobic microbiological of aerobic zone, the elastic filler 4 enrichment amphimicrobe of oxygen-starved area, the elastic filler 4 enrichment obligate anaerobe of anaerobic zone.
The length of biological tower 1 is enough to make anaerobic zone, oxygen-starved area and aerobic zone segmentation obvious, meets each section of normal environmental requirement of microorganism.
Also be provided with water distribution system 8 in biological tower 1, as shown in Figure 2, water distribution system 8 is the annular pipeline structure of built-in cross connecting passage, and its pipe section is semicircle, namely forms by semi-cylindrical long tube is bending, as shown in Figure 3.The water inlet pipe 7 of level is communicated with from water-in with water distribution system 8, and sewage enters water distribution system 8, falls oxygen-starved area one in biological tower 1 by overflow manner.
The sidewall being positioned at top, oxygen-starved area one in biological tower 1 is provided with air inlet transverse tube 16, and as shown in Figure 4, air inlet transverse tube 16 is connected with aeration plate 12 by air inlet vertical tube 5, and air enters aeration plate 12 through air inlet transverse tube 16, air inlet vertical tube 5 successively, carries out aeration.
Water outlet 10 connects a mouth of pipe of the threeway rising pipe 11 outside biological tower 1, wherein, second mouth of pipe of threeway rising pipe 11 connects one end of Digestive system return line 9, the other end of Digestive system return line 9 is connected in biological tower 1 water distribution system, realizes a part of water outlet as return digestion liquid.
The present invention also comprises online dynamic regulation aerating apparatus, online dynamic regulation aerating apparatus comprises that the low DO Concentration Testing be laid between anaerobic zone and oxygen-starved area two pops one's head in 13, middle DO Concentration Testing between oxygen-starved area two and aerobic zone pops one's head in 14, each probe be all close to be arranged on biological tower 1 inwall on; Each probe connection control device, controller is connected with the setter of aeration plate 12.Wherein low DO Concentration Testing is popped one's head in 13 sensing range DO<0.2mg/L, middle DO Concentration Testing is popped one's head in 14 sensing range 0.2mg/L<DO<0.5mg/L, low DO Concentration Testing probe 13 regulates operated pneumatic valve aperture by signal feedback aeration controller, guarantees that dissolved oxygen concentration bottom anaerobic zone is at about 0.2mg/L; Middle DO Concentration Testing probe 14 regulates operated pneumatic valve aperture by signal feedback, guarantees that dissolved oxygen concentration bottom oxygen-starved area is at about 0.5mg/L.
Principle of the present invention is:
Sewage enters water distribution system 8 through water inlet pipe 7, oxygen-starved area one in biological tower 1 is fallen by overflow manner, in sewage, a large amount of organic carbon is decomposed utilization by amphimicrobe, and discharge phosphorus in born of the same parents, denitrifying bacteria utilizes the nitrate nitrogen produced in aerobic zone to make final electron acceptor(EA), various organic substrate in sewage, such as organic acid, alcohols, carbohydrate or alkanes, benzoic acid salt, phenols and other benzene derivative carry out denitrification denitrogenation as electron donor (carbon source); In water suspended substance or in elastic filler 4 microbial film retain or be degraded by microorganisms or be precipitated to bucket 3.The collection and confinement of gases such as under gravity, sewage enters anaerobic zone, and organic carbon decomposes further under anerobe effect, releases phosphorus effect and improves further, the methane that anaerobic stages produces, at air collecting chamber 2, are discharged by escape pipe 6; Sewage continues to enter oxygen-starved area two downwards, and organic carbon decomposes further under facultative anaerobe effect, releases phosphorus effect and improves further; Last sewage enters aerobic zone, in water, ammonia nitrogen transfers nitrate nitrogen under nitrobacteria effect, polyP bacteria all absorbs phosphorus, organic carbon is at utmost removed under aerobic bacteria effect, reach the object of the nutritive salt such as synchronous organics removal and nitrogen phosphorus, water finally flows out from water outlet 10 after treatment, and a part of water outlet is back in water distribution system as Digestive system through reflux pump, and completion system is denitrogenation at utmost.

Claims (8)

1. a return-flow type biological device, comprise biological tower (1), it is characterized in that, in described biological tower (1), oxygen-starved area one is set from top to bottom, anaerobic zone, oxygen-starved area two and aerobic zone, biological tower (1) top is provided with the air collecting chamber (2) of escape pipe (6), bottom is provided with the bucket (3) of mud mouth (17), the top of the sidewall of biological tower (1) between air collecting chamber (2) and bucket (3) arranges water-in, bottom sets out the mouth of a river (10), aeration plate (12) is arranged between described bucket (3) and aerobic zone, during system cloud gray model, upward motion of air, successively through aerobic zone, oxygen-starved area two, the gas produced in system operation enters air collecting chamber (2) and finally discharges from escape pipe (6), sewage enters from water-in simultaneously, under gravity successively through oxygen-starved area one, anaerobic zone, oxygen-starved area two and aerobic zone, flow out from the water outlet (10) of bottom, easy precipitation suspended substance in this process, mud or the microbial film that comes off are discharged from mud mouth (17).
2. return-flow type biological device according to claim 1, it is characterized in that, be provided with the elastic filler (4) being beneficial to microorganic adhesion and enrichment corresponding to anaerobic zone, oxygen-starved area and aerobic zone in described biological tower (1), elastic filler (4) the enrichment aerobic microbiological of aerobic zone, elastic filler (4) the enrichment amphimicrobe of oxygen-starved area, elastic filler (4) the enrichment obligate anaerobe of anaerobic zone.
3. return-flow type biological device according to claim 1, is characterized in that, the length of described biological tower (1) is enough to make anaerobic zone, oxygen-starved area and aerobic zone segmentation obvious, meets each section of normal environmental requirement of microorganism.
4. return-flow type biological device according to claim 1, it is characterized in that, water distribution system (8) is also provided with in described biological tower (1), described water distribution system (8) is the annular pipeline structure of built-in cross connecting passage, and its pipe section is semicircle, the water inlet pipe (7) of level is communicated with from water-in with water distribution system (8), sewage enters water distribution system (8), falls oxygen-starved area one in biological tower (1) by overflow manner.
5. return-flow type biological device according to claim 1, it is characterized in that, the sidewall being positioned at top, oxygen-starved area one in described biological tower (1) is provided with air inlet transverse tube (16), air inlet transverse tube (16) is connected with aeration plate (12) by air inlet vertical tube (5), air enters aeration plate (12) through air inlet transverse tube (16), air inlet vertical tube (5) successively, carries out aeration.
6. return-flow type biological device according to claim 1, it is characterized in that, described water outlet (10) connects a mouth of pipe of biological tower (1) threeway rising pipe (11) outward, wherein, second mouth of pipe of threeway rising pipe (11) connects one end of Digestive system return line (9), the other end of Digestive system return line (9) is connected in the water distribution system of biological tower (1), realizes a part of water outlet as return digestion liquid.
7. return-flow type biological device according to claim 1, it is characterized in that, online dynamic regulation aerating apparatus, described online dynamic regulation aerating apparatus comprises that the low DO Concentration Testing be laid between anaerobic zone and oxygen-starved area two is popped one's head in (13), middle DO Concentration Testing between oxygen-starved area two and aerobic zone is popped one's head in (14), each probe be all close to be arranged on biological tower (1) inwall on; Each probe connection control device, controller is connected with the setter of aeration plate (12).
8. return-flow type biological device according to claim 7, is characterized in that, described low DO Concentration Testing probe (13) sensing range DO<0.2mg/L,
Middle DO Concentration Testing probe (14) sensing range 0.2mg/L<DO<0.5mg/L,
Low DO Concentration Testing probe (13) regulates operated pneumatic valve aperture by signal feedback aeration controller, guarantees that dissolved oxygen concentration bottom anaerobic zone is at about 0.2mg/L; Middle DO Concentration Testing probe (14) regulates operated pneumatic valve aperture by signal feedback, guarantees that dissolved oxygen concentration bottom oxygen-starved area is at about 0.5mg/L.
CN201610060044.2A 2016-01-28 2016-01-28 Reverse-flow type biological contact device Pending CN105502660A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201610060044.2A CN105502660A (en) 2016-01-28 2016-01-28 Reverse-flow type biological contact device

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CN105502660A true CN105502660A (en) 2016-04-20

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108046433A (en) * 2018-01-25 2018-05-18 哈尔滨工业大学 A kind of floating stuffing colonization method of Anaerobic wastewater treatment
CN109384312A (en) * 2018-10-16 2019-02-26 湖南清之源环保科技有限公司 Biological filtering tower combined working for sewage treatment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202346827U (en) * 2011-12-02 2012-07-25 无锡市新都环保科技有限公司 Biological contact oxidation tower
CN104496025A (en) * 2014-12-11 2015-04-08 深圳市环境科学研究院 Enhanced simultaneous phosphorus and nitrogen removal sewage-treatment method and device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202346827U (en) * 2011-12-02 2012-07-25 无锡市新都环保科技有限公司 Biological contact oxidation tower
CN104496025A (en) * 2014-12-11 2015-04-08 深圳市环境科学研究院 Enhanced simultaneous phosphorus and nitrogen removal sewage-treatment method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108046433A (en) * 2018-01-25 2018-05-18 哈尔滨工业大学 A kind of floating stuffing colonization method of Anaerobic wastewater treatment
CN109384312A (en) * 2018-10-16 2019-02-26 湖南清之源环保科技有限公司 Biological filtering tower combined working for sewage treatment

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Application publication date: 20160420