CN102531270A - Multi-section multi-step anaerobic-oxic (AO) biological reaction tank - Google Patents
Multi-section multi-step anaerobic-oxic (AO) biological reaction tank Download PDFInfo
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- CN102531270A CN102531270A CN2010106093073A CN201010609307A CN102531270A CN 102531270 A CN102531270 A CN 102531270A CN 2010106093073 A CN2010106093073 A CN 2010106093073A CN 201010609307 A CN201010609307 A CN 201010609307A CN 102531270 A CN102531270 A CN 102531270A
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Abstract
The invention relates to the field of sewage treatment and in particular relates to a multi-section multi-step anaerobic-oxic (AO) biological reaction tank. The biological reaction tank comprises a reaction tank body, a water inlet canal, an anaerobic zone, anoxic zones, aerobic zones, a return sludge canal and an aeration system arranged in the aerobic zone, wherein a partition wall is arranged between every two adjacent zones; the front end of the biological reaction tank is provided with a primary anaerobic zone and a primary aerobic zone, the rear ends of the primary anaerobic zone and the primary aerobic zone are provided with multi-step anoxic zones and aerobic zones, the front end of the anaerobic zone and the front end of each anoxic zone are provided with water distribution holes which are communicated with the water inlet canal, the anaerobic zone and each aerobic zone are respectively provided with a plurality of hydraulic mixing guide plates; and the tail ends of the last-step anoxic zone and the aerobic zone are provided with water outlet areas. The front end of the anaerobic zone is provided with a sludge inlet which is communicated with the return sludge canal. The hydraulic mixing guide plates are used for replacing the mechanical agitation equipment to form a subsectional mixing whole plug flow type hydraulic flow state; and the aeration system adopts a multi-step degression aeration mode. The multi-section multi-step AO biological reaction tank has the following advantages: the process layout is reasonable, the water flow is smooth, the civil structure is small, the treatment efficiency is high, and the infrastructure investment and the operation and maintenance cost are reduced.
Description
Technical field
This invention relates to biological reaction tank in the sewage treatment area, particularly relates to the multistage AO biological reaction tank of a kind of multistage.
Background technology
In the sewage treatment project field, biological reaction tank is the core structures of sewage treatment process.The shortcoming that the prior biological reaction tank exists is that process layout is not perfect; The waterpower fluidised form has some setbacks, and the civil engineering structure size is bigger, and the mechanical stirring equipment maintenance cost is high; Cause to a certain degree investment and energy consumption waste, fail to satisfy the request for utilization that the user saves energy and reduce the cost.
Summary of the invention
The purpose of this invention is to provide the multistage AO biological reaction tank of multistage that a kind of process layout is reasonable, current are smooth and easy, civil engineering structure is little, processing efficiency is high, use cost is low.This biological reaction tank can combine sewage treatment process layout and civil engineering structure design, improves pond body structure stress condition, improves safety of structure, makes things convenient for operational management, reduces the target of initial cost and operation and maintenance cost.
To achieve these goals, the technical scheme that the present invention takes is following: the multistage AO biological reaction tank of a kind of multistage comprises the aerating system that reaction tank body, inlet channel, anaerobic zone, oxygen-starved area, aerobic zone, returned sluge canal and aerobic zone are provided with; Be provided with partition wall between adjacent two districts; It is characterized in that: reaction tank body front end is provided with one-level anaerobic zone and aerobic zone; The rear end of one-level anaerobic zone and aerobic zone is provided with multi-stage anaerobic district and aerobic zone; The front end of anaerobic zone and each oxygen-starved area is provided with the water-distributing gap that is communicated with inlet channel, and anaerobic zone is provided with several piece waterpower respectively with each oxygen-starved area and mixes flow deflector; The end of final stage oxygen-starved area and aerobic zone sets out the pool.
The anaerobic zone front end is provided with the mud inlet that is communicated with the returned sluge canal, makes from the returned sluge of second pond and gets into anaerobic zone through the returned sluge canal, and the bacterial classification of returned sluge is used.
The partition wall of the partition wall of anaerobic zone and aerobic zone, aerobic zone and oxygen-starved area, promptly the partition wall between each district is as training wall, and partition wall is a skeleton construction.
Inlet channel of the present invention is along the adjacent setting of same end of anaerobic zone, oxygen-starved area and aerobic zone; Returned sluge canal and inlet channel laterally arrange.
The front end of anaerobic zone of the present invention and each oxygen-starved area all is provided with the water-distributing gap that is communicated with inlet channel, promptly adopts the multiple spot water distribution mode, divides multistage to allocate anaerobic zone and each oxygen-starved area respectively in inlet channel sewage; Anaerobic zone that the biological reaction tank front end is provided with and aerobic zone are as the one-level AO dephosphorization facility that is provided with in pairs; Oxygen-starved area and the paired multistage AO strengthened denitrification facility that is provided with of aerobic zone conduct in that one-level AO dephosphorization is provided with at the back constitute the multistage AO biological reaction tank of multistage (AOMAO) that is combined by (AO) dephosphorization of one-level anaerobic-aerobic and multi-stage anaerobic aerobic (MAO) strengthened denitrification in fact; Sewage gets into anaerobic zone and multi-stage anaerobic district respectively by a certain percentage through inlet channel, forms the process combination of one-level AO dephosphorization and multistage AO strengthened denitrification.
The present invention combines sewage treatment process layout and civil engineering structure design; The multistage AO technology of multistage is adopted in WWT; Sewage divides multistage to get into anaerobic zone and oxygen-starved area in the biological tank through inlet channel, gets into anaerobic zone from the returned sluge of second pond through the returned sluge canal, and sewage and returned sluge are through waterpower mixing flow deflector; Utilize waterpower to mix stirring action and substitute traditional mechanical stirring equipment; Form the waterpower fluidised form that segmentation mixes whole pulling flow type, the aerating system of aerobic zone setting possesses the system features of multistage decrescence aeration simultaneously, forms whole waterpower fluidised form system as the partition wall of training wall and biological respinse pool wall.Have advantages such as process layout is reasonable, current are smooth and easy, civil engineering structure is little, processing efficiency is high, use cost is low, carbon reduction; Improved pond body structure stress condition; Improve safety of structure; Make things convenient for operational management, reduce initial cost and operation and maintenance cost, realized the process combination of one-level AO dephosphorization and multistage AO strengthened denitrification.
Description of drawings
Fig. 1 is a two dimensional structure synoptic diagram of the present invention,
Fig. 2 is the synoptic diagram that concerns of mixing flow deflector, aerating system, training wall and pond body,
Fig. 3 moves towards synoptic diagram for mixing flow deflector set-up mode and current.
Among the figure: 1-inlet channel, 2-anaerobic zone, 3-oxygen-starved area, 4-aerobic zone, 5-water-distributing gap; 6-returned sluge canal, 7-exhalant region, 8-flow deflector, 9-aerating system, 10-partition wall are also claimed training wall; 11-mud inlet, 12-reaction tank body, 13-current are opened one's mouth, 14-gap.
Embodiment
Below in conjunction with accompanying drawing and embodiment explanation the present invention.
As shown in Figure 1: the multistage AO biological reaction tank of a kind of multistage comprises the aerating system 9 that reaction tank body 12, inlet channel 1, anaerobic zone 2, oxygen-starved area 3, aerobic zone 4, returned sluge canal 6 and aerobic zone 4 are provided with; Be provided with partition wall 10 between adjacent two districts; Reaction tank body 12 front ends are provided with one-level anaerobic zone 2 and aerobic zone 4; One-level anaerobic zone 2 is provided with three grades of oxygen-starved areas 3 and aerobic zone 4 with the rear end of aerobic zone 4; The front end of anaerobic zone 2 and each oxygen-starved area 3 is provided with the water-distributing gap 5 that is communicated with inlet channel 1, and anaerobic zone 2 is provided with waterpower respectively with each oxygen-starved area 3 and mixes flow deflector 8, and referring to Fig. 2 and Fig. 3: waterpower is mixed flow deflector 8 has two kinds of mounting means; Waterpower is mixed the lower end and airtight fixed connection the at the bottom of reaction tank body 12 ponds of flow deflector 8, and this waterpower is mixed the upper end of flow deflector 8 and opened one's mouth 13 as current; Perhaps; Establish current at the bottom of the lower end of waterpower mixing flow deflector 8 and reaction tank body 12 ponds and open one's mouth 13; Waterpower is mixed flow deflector 8 sides and is fixed in partition wall 10; The upper end is mixed flow deflector 8 and lower end and is arranged alternately as open one's mouth 13 the flow deflector 8 that mixes of current as open one's mouth 13 waterpower of current, and the waterpower of utilizing waterpower to mix flow deflector 8 is mixed stirring action and substituted traditional mechanical stirring equipment, the waterpower fluidised form that the formation segmentation mixes whole pulling flow type;
Referring to Fig. 2: aerating system 9 is located at the bottom of the pond of aerobic zone 4; Aerating system 9 is set to multistage decrescence aeration mode from feed-water end to water side, promptly realize carbon reduction.
Like Fig. 1 and shown in Figure 2: inlet channel 1 is along the adjacent setting of same end of anaerobic zone 2, oxygen-starved area 3 and aerobic zone 4, and inlet channel 1 is positioned at the outside of reaction tank body 12, and inlet channel 1 upper end is concordant with reaction tank body 12 upper ends; Returned sluge canal 6 laterally arranges with inlet channel 5, and returned sluge canal 6 is positioned at inlet channel 5 outsides.
The waterpower that is provided with in the front end anaerobic zone 2 is mixed flow deflector 8 spacings and is mixed flow deflector 8 spacings less than the waterpower that is provided with in the oxygen-starved area, back.
Actual Engineering Projects:
Yunnan XX sewage work treatment scale is 80,000 ton per days; The multistage AO biological reaction tank of employing multistage, sewage gets into anaerobic zone 2 and oxygen-starved area 3 in the biological tank through 1 fen multistage of inlet channel, and it is 6m that waterpower mixing flow deflector 8 spacings are set in its front end anaerobic zone; It is 6.4m that waterpower mixing flow deflector 8 spacings are set in the oxygen-starved area; Sewage and returned sluge mix flow deflector 8 through waterpower, utilize waterpower to mix and stir, and form the waterpower fluidised form that segmentation mixes whole pulling flow type; Aerating system 9 is arranged to multistage decrescence aeration mode, the multistage AO biological reaction tank of multistage (AOMAO) that becomes the present invention to design according to the array configuration set of layouts of one-level AO dephosphorization and multistage AO strengthened denitrification.
This project is checked and accepted through operation, and water outlet reaches " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A emission request.This project adopts the multistage AO biological reaction tank of multistage (AOMAO) to save more than 1,300 ten thousand yuan of engineering construction investments; Wherein mix flow deflector with waterpower; Substitute one in traditional submarine mechanical whisking appliance; Disregard equipment maintenance cost, move 360 days per year, 0.65 yuan of the electricity charge/degree calculates, the multistage AO biological reaction tank of multistage of the present invention (AOMAO) can be saved 102.6 ten thousand yuan/year of working costs.
Claims (8)
1. the multistage AO biological reaction tank of multistage comprises the aerating system that reaction tank body, inlet channel, anaerobic zone, oxygen-starved area, aerobic zone, returned sluge canal and aerobic zone are provided with; Be provided with partition wall between adjacent two districts; It is characterized in that: said reaction tank body (12) front end is provided with one-level anaerobic zone (2) and aerobic zone (4); Said one-level anaerobic zone (2) is provided with multi-stage anaerobic district (3) and aerobic zone (4) with the rear end of aerobic zone (4); The front end of said anaerobic zone (2) and each said oxygen-starved area (3) is provided with the water-distributing gap (5) that is communicated with said inlet channel (1), and said anaerobic zone (2) is provided with several piece waterpower respectively with each said oxygen-starved area (3) and mixes flow deflector (8); The said oxygen-starved area of final stage (3) sets out pool (7) with the end of aerobic zone (4).
2. the multistage AO biological reaction tank of a kind of multistage as claimed in claim 1 is characterized in that: said anaerobic zone (2) front end is provided with the mud inlet (11) that is communicated with said returned sluge canal (6); Many said level oxygen-starved areas (3) are three grades with aerobic zone (4).
3. the multistage AO biological reaction tank of multistage according to claim 1 is characterized in that: said reaction tank body (12) is provided with from feed-water end to water side according to anaerobic zone (2), aerobic zone (4), oxygen-starved area (3), aerobic zone (4), oxygen-starved area (3), aerobic zone (4), oxygen-starved area (3), aerobic zone (4) ordering; By the partition wall (10) of skeleton construction at interval, said partition wall (10) is provided with gap (14) between adjacent two districts, and said gap (14) is located at the water side of said anaerobic zone (2), each said aerobic zone (4) and each said oxygen-starved area (3).
4. the multistage AO biological reaction tank of multistage according to claim 1; It is characterized in that: said waterpower is mixed the lower end and airtight fixed connection the at the bottom of said reaction tank body (12) pond of flow deflector (8), and the upper end of said waterpower mixing flow deflector (8) is as current open one's mouth (13); Perhaps said waterpower is mixed and is established current open one's mouth (13) at the bottom of lower end and said reaction tank body (12) pond of flow deflector (8); Said waterpower is mixed flow deflector (8) side and is fixed in said partition wall (10), and the upper end is mixed flow deflector (8) and lower end and is arranged alternately as the open one's mouth said flow deflector (8) that mixes of (13) of current as the open one's mouth said waterpower of (13) of current.
5. the multistage AO biological reaction tank of multistage according to claim 1; It is characterized in that: said inlet channel (1) is along the adjacent setting of same end of said anaerobic zone (2), said oxygen-starved area (3) and said aerobic zone (4); Said inlet channel (1) is positioned at the outside of said reaction tank body (12), and said inlet channel (1) upper end is concordant with said reaction tank body (12) upper end.
6. the multistage AO biological reaction tank of multistage according to claim 5 is characterized in that: said returned sluge canal (6) laterally arranges with said inlet channel (5), and said returned sluge canal (6) is positioned at said inlet channel (5) outside.
7. according to the multistage AO biological reaction tank of any described multistage of claim 1 to 7, it is characterized in that: the said waterpower that is provided with in the said anaerobic zone (2) is mixed flow deflector (8) spacing and is mixed flow deflector (8) spacing less than the said waterpower that is provided with in said oxygen-starved area (3).
8. the multistage AO biological reaction tank of multistage according to claim 1 is characterized in that: said aerating system (9) is set to multistage decrescence aeration mode from feed-water end to water side.
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| CN2010106093073A CN102531270A (en) | 2010-12-28 | 2010-12-28 | Multi-section multi-step anaerobic-oxic (AO) biological reaction tank |
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| CN2010106093073A CN102531270A (en) | 2010-12-28 | 2010-12-28 | Multi-section multi-step anaerobic-oxic (AO) biological reaction tank |
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Cited By (6)
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| CN103145246A (en) * | 2013-03-29 | 2013-06-12 | 环境保护部南京环境科学研究所 | Device and method for controlling runoff pollution of farmland for large-scale farming |
| CN104193073A (en) * | 2014-07-21 | 2014-12-10 | 上海禾元环保集团有限公司 | Horizontal multistage AO-vertical AAO ecological combination sewage treatment system |
| CN106348522A (en) * | 2016-08-25 | 2017-01-25 | 广西壮族自治区环境保护科学研究院 | Low-energy-consumption intensifying-denitrifying integrated reactor |
| CN106824017A (en) * | 2017-03-14 | 2017-06-13 | 四川泸州巨宏化工有限责任公司 | Auxiliary reactor for producing methyl butynol |
| CN108585207A (en) * | 2018-07-16 | 2018-09-28 | 北京北排水务设计研究院有限公司 | A kind of flow-stopping plate and its application method avoiding aerobic tank dissolved oxygen reflux anoxic pond |
| CN114644434A (en) * | 2022-04-13 | 2022-06-21 | 同济大学 | Sewage low-carbon biological treatment system and method adaptive to water quality change |
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| CN1544364A (en) * | 2003-11-17 | 2004-11-10 | 李迪田 | Propulsive and batched type activated sludge reaction process and device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145246A (en) * | 2013-03-29 | 2013-06-12 | 环境保护部南京环境科学研究所 | Device and method for controlling runoff pollution of farmland for large-scale farming |
| CN104193073A (en) * | 2014-07-21 | 2014-12-10 | 上海禾元环保集团有限公司 | Horizontal multistage AO-vertical AAO ecological combination sewage treatment system |
| CN104193073B (en) * | 2014-07-21 | 2015-10-14 | 上海禾元环保集团有限公司 | The ecologic assemblage treatment system of the vertical AAO of the horizontal multistage AO-of sewage |
| CN106348522A (en) * | 2016-08-25 | 2017-01-25 | 广西壮族自治区环境保护科学研究院 | Low-energy-consumption intensifying-denitrifying integrated reactor |
| CN106824017A (en) * | 2017-03-14 | 2017-06-13 | 四川泸州巨宏化工有限责任公司 | Auxiliary reactor for producing methyl butynol |
| CN108585207A (en) * | 2018-07-16 | 2018-09-28 | 北京北排水务设计研究院有限公司 | A kind of flow-stopping plate and its application method avoiding aerobic tank dissolved oxygen reflux anoxic pond |
| CN108585207B (en) * | 2018-07-16 | 2024-01-02 | 北京北排水务设计研究院有限公司 | Baffle plate for preventing dissolved oxygen in aerobic tank from flowing back to anoxic tank and application method of baffle plate |
| CN114644434A (en) * | 2022-04-13 | 2022-06-21 | 同济大学 | Sewage low-carbon biological treatment system and method adaptive to water quality change |
| CN114644434B (en) * | 2022-04-13 | 2022-12-06 | 同济大学 | Sewage low-carbon biological treatment system and method adaptive to water quality change |
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Application publication date: 20120704 |