CN103241901B - Nitrogen and phosphorus removal water treatment device - Google Patents
Nitrogen and phosphorus removal water treatment device Download PDFInfo
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- CN103241901B CN103241901B CN201310188329.0A CN201310188329A CN103241901B CN 103241901 B CN103241901 B CN 103241901B CN 201310188329 A CN201310188329 A CN 201310188329A CN 103241901 B CN103241901 B CN 103241901B
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Abstract
The invention relates to a nitrogen and phosphorus removal water treatment device, belongs to the technical field of sewage treatment devices and aims at solving the technical problem of providing a nitrogen and phosphorus removal water treatment device which is of a simple structure and has strengthened nitrogen and phosphorus removal effect. According to the technical scheme of the invention, the nitrogen and phosphorus removal water treatment device comprises an anaerobic pond, an anoxic pond and a multi-stage A/O pond, wherein multiple groups of parallel suspend chain aeration devices are hung on the multi-stage A/O pond, each suspend chain aeration device comprises a ventilation chain, a hose and a microporous aeration head, each hose is communicated with each ventilation chain and each microporous aeration head, the tow ends of each ventilation chain are dragged by steel wire ropes to be fixed on the top of the side wall of the multi-stage A/O pond, a bottom mud discharge pipe is arranged at the bottom of the end of the multi-stage A/O pond, communicating pipes are symmetrically arranged outside the multi-stage A/O pond, and the two ends of the bottom mud discharge pipe are connected with the inlet ends of the communicating pipes.
Description
Technical field
Denitrogenation dephosphorizing water treatment device of the present invention, belongs to waste disposal plant technical field.
Background technology
Conventional A
2/ O technique is the arrangement form of anaerobic-anoxic-oxic.The function of Aerobic Pond and aeration tank is multiple, remove BOD, nitrated and absorb phosphorus all carry out in this reactor.A
2the subject matter existed in/O process operation process is exactly nitrifier, denitrifying bacteria and polyP bacteria also exist contradiction and competition on organic loading, sludge age and carbon source demand, be difficult to the efficient removal simultaneously obtaining nitrogen, phosphorus in same system, hamper the application of biological dephosphorize denitrification technology.
Generally speaking, will reach the removal object of nitrogen, phosphorus, in sewage, carbon-nitrogen ratio is at least 4.5 simultaneously.When in sewage, carbon source requires lower than this, after this technique is placed in anaerobic phosphorus release anoxic denitrification, denitrification effect is subject to carbon source quantitative limitation, a large amount of is not entered anaerobic zone by denitrifying nitrate with returned sluge, denitrifying bacteria can be that electron donor carries out denitrification with organism, consumes organic carbon source in water inlet, affects the synthesis of anaerobism product P HB, and then disturb normally carrying out of anaerobic phosphorus release, have influence on follow-up phosphor-removing effect.Sometimes polyP bacteria even can be caused directly to inhale phosphorus, finally have influence on the steady running of whole nutrient removal system.Otherwise, if aerobic section nitrification is bad, then enter the nitrate minimizing of anaerobism section with returned sluge, improve the anaerobic environment of anaerobism section, phosphorus can anaerobism be discharged, so phosphor-removing effect is better fully, but often due to not exclusively nitrated in actually operating, cause denitrification effect not good.
A
2the sludge age of/O process sludge system is subject to the impact of two aspects.First be Aerobic Pond, because autotrophic type nitrifier is more much smaller than the minimum specific growth rate of heterotroph aerobic bacteria, nitrifier be made to survive and become dominant microflora, then sludge age will be grown, and is proven, and is advisable with 20d ~ 30d.Secondly, A
2in/O technique, the removal of phosphorus is mainly realized by the excess sludge of discharging phosphorus concentration content higher, and as period of storage is long, then the surplus sludge volume of discharging containing high phosphorus every day is too little, does not reach higher phosphor-removing effect.Long sludge age can cause phosphorus again to discharge from mud simultaneously, reduces phosphor-removing effect, and the sludge age that therefore dephosphorization requires is 5d ~ 8d.
Owing to there is internal recycle, in fact only have sub-fraction to experienced by complete phosphorus of releasing in the excess sludge that common process system is discharged and inhale phosphorus process, all the other then directly enter aerobic zone by oxygen-starved area without anaerobic state substantially, and this is disadvantageous for dephosphorization.
BIOLAK process is the multistage A/O activated sludge treatment method based on extended aeration.BIOLAK process utilizes the aeration of the alternative aeration of aerator chain/not and forms oxygen-starved area and aerobic zone, because oxygen-starved area and aerobic zone are not strictly separated and close together, along with the flowing of water and the swing of aerator chain, oxygen in aerobic zone easily brings oxygen-starved area into, the environment of the extremely low or anoxic of more difficult formation dissolved oxygen concentration, although therefore BIOLAK process has certain denitrification effect, stable denitrification effect be reached and still acquire a certain degree of difficulty.To improve nitric efficiency, must nitrate recirculation ratio be strengthened, thus can strengthen running cost, in addition because internal recycle liquid is from aeration tank, containing certain DO, make A section be difficult to the desirable anoxic condition of full maintenance, affect denitrification effect.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, and technical problem to be solved is to provide the denitrogenation dephosphorizing water treatment device that a kind of structure is simple, Nitrogen/Phosphorus Removal is strengthened.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: denitrogenation dephosphorizing water treatment device, comprise anaerobic pond, anoxic pond and multistage A/O pond, described multistage A/O pond is hung with the many groups of suspend chain aerating apparatuss be arranged in parallel, described suspend chain aerating apparatus comprises ventilation chain, flexible pipe and micro porous aeration head, to ventilate described in described soft pipe connection chain and micro porous aeration head, the two ends of described ventilation chain are fixed on the sidewall top in multistage A/O pond by rope traction, bottom shore pipe is provided with at the bottom of the terminal reseavoir in described multistage A/O pond, the outer symmetrical in described multistage A/O pond is provided with communicating pipe, the entrance end of described communicating pipe is communicated with the side wall upper part in multistage A/O pond, the exit end of described communicating pipe is communicated with the rear wall in multistage A/O pond, the two ends of described bottom shore pipe are connected with the entrance end of described communicating pipe, the rear wall top in described multistage A/O pond is provided with effluent trough, described effluent trough is provided with rising pipe, the antetheca top of described anaerobic pond is provided with overflow groove, described overflow groove is communicated with mud return line with water inlet pipe, pool wall between described anoxic pond and multistage A/O pond is provided with nitrification liquid reflux pump, and described anaerobic pond is communicated with respectively by communicating aperture with between anoxic pond and between anoxic pond with multistage A/O pond.
The quantity of described anaerobic pond and anoxic pond is two, and forms the anaerobic-anoxic processing unit of two groups of parallel connections.
Low speed pushing flow agitator is provided with in described anaerobic pond and anoxic pond.
Described nitrification liquid reflux pump is for leaning on wall type reflux pump.
Described effluent trough is provided with adjustment weir plate.
Described overflow groove is provided with cover plate.
Described anaerobic pond is provided with unwatering sump, and described unwatering sump is communicated with blow-down pipe.
Described multistage A/O pond is Tu Chi.
Described anaerobic pond is communicated with the reserving gaps between sidewall by pool wall therebetween with anoxic pond.
Compared with prior art the present invention has following beneficial effect.
1, present invention incorporates A
2the technological merit of/O technique and BIOLAK process, makes up mutually the shortcoming of the two, enhances the effect of denitrogenation dephosphorizing, defines the denitrification dephosphorization system that operation is more stable.Apparatus structure comprises anaerobic pond successively, anoxic pond and multistage A/O pond, suspend chain aerating apparatus is adopted in multistage A/O pond, during ventilation, aerator produces motion due to unbalance stress in water, move when aeration and successively change as wave, oxygen consumption district and anaerobic zone is formed in reaction tank, along with the nitration reaction of oxygen and the anti-nitration reaction phase change of anaerobism, nitrogen in sewage can be removed very thorough, because oxygen directly can obtain a part from anti-nitration reaction, therefore the air needed is little, stage aeration is utilized to save energy consumption.Simultaneous Nitrification liquid is back to anoxic pond and carries out denitrification, brings carbon source simultaneously, and strengthening anoxic pond denitrification denitrogenation effect, adds the denitrification reaction in multistage A/O pond further, and cause the nitrate content in returned sluge little, what can not affect anaerobic pond removes phosphorus reaction.
2, the present invention adopts suspend chain aerating apparatus due to the special structure of aeration head and operation scheme, makes the utilising efficiency of oxygen high, saves electric energy; Aeration head runs and also seldom blocks in complex environment simultaneously, in whirlwind state at the bottom of pond, and fastener-free at the bottom of pond or built-in fitting.When aeration head must overhaul, do not need the sewage drained in pond, operational management is convenient.
3, the present invention adopts extended aeration, and relative aeration time is longer, and sludge loading is lower, microorganism absorbs pollutent as nutriment, specific absorption is high, and water outlet is very clean, sludge quantity is little, do not need nitration treatment and mud mineralization degree high, the long breeding being conducive to nitrifier in mud age.
4, the present invention sets up bottom shore pipe, carries out disturbance spoil disposal to multistage A/O pond, prevents mud in multistage A/O pond afterbody deposition, further increases the utilization ratio of mud.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Fig. 4 is the C-C sectional view of Fig. 1.
Fig. 5 is the D-D sectional view of Fig. 1.
Fig. 6 is the E-E sectional view of Fig. 1.
In figure, 1 is anaerobic pond, and 2 is anoxic pond, and 3 is multistage A/O pond, 4 is suspend chain aerating apparatus, and 5 is ventilation chain, and 6 is flexible pipe, 7 is micro porous aeration head, and 8 is bottom shore pipe, and 9 is communicating pipe, 10 is effluent trough, and 11 is rising pipe, and 12 is overflow groove, 13 is water inlet pipe, and 14 is mud return line, and 15 is nitrification liquid reflux pump, 16 is unwatering sump, and 17 is blow-down pipe.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
As shown in figures 1 to 6, denitrogenation dephosphorizing water treatment device, comprise anaerobic pond 1, anoxic pond 2 and multistage A/O pond 3, described multistage A/O pond 3 is hung with the many groups of suspend chain aerating apparatuss 4 be arranged in parallel, described suspend chain aerating apparatus 4 comprises ventilation chain 5, flexible pipe 6 and micro porous aeration head 7, described flexible pipe 6 is communicated with described ventilation chain 5 and micro porous aeration head 7, the two ends of described ventilation chain 5 are fixed on the sidewall top in multistage A/O pond 3 by rope traction, bottom shore pipe 8 is provided with at the bottom of the terminal reseavoir in described multistage A/O pond 3, the outer symmetrical in described multistage A/O pond 3 is provided with communicating pipe 9, the entrance end of described communicating pipe 9 is communicated with the side wall upper part in multistage A/O pond 3, the exit end of described communicating pipe 9 is communicated with the rear wall in multistage A/O pond 3, the two ends of described bottom shore pipe 8 are connected with the entrance end of described communicating pipe 9, the rear wall top in described multistage A/O pond 3 is provided with effluent trough 10, described effluent trough 10 is provided with rising pipe 11, the antetheca top of described anaerobic pond 1 is provided with overflow groove 12, described overflow groove 12 is communicated with mud return line 14 with water inlet pipe 13, pool wall between described anoxic pond 2 and multistage A/O pond 3 is provided with nitrification liquid reflux pump 15, and described anaerobic pond 1 is communicated with respectively by communicating aperture with between anoxic pond 2 and between anoxic pond 2 with multistage A/O pond 3.
The quantity of described anaerobic pond 1 and anoxic pond 2 is two, and forms the anaerobic-anoxic processing unit of two groups of parallel connections.
Low speed pushing flow agitator is provided with in described anaerobic pond 1 and anoxic pond 2.
Described nitrification liquid reflux pump 15 is for leaning on wall type reflux pump.
Described effluent trough 10 is provided with adjustment weir plate.
Described overflow groove 12 is provided with cover plate.
Described anaerobic pond 1 is provided with unwatering sump 16, and described unwatering sump 16 is communicated with blow-down pipe 17.
Described multistage A/O pond 3 is Tu Chi.
Described anaerobic pond 1 is communicated with the reserving gaps between sidewall by pool wall therebetween with anoxic pond 2.
By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (8)
1. denitrogenation dephosphorizing water treatment device, it is characterized in that: comprise anaerobic pond (1), anoxic pond (2) and multistage A/O pond (3), described multistage A/O pond (3) is hung with the many groups of suspend chain aerating apparatuss (4) be arranged in parallel, described suspend chain aerating apparatus (4) comprises ventilation chain (5), flexible pipe (6) and micro porous aeration head (7), described flexible pipe (6) is communicated with described ventilation chain (5) and micro porous aeration head (7), the two ends of described ventilation chain (5) are fixed on the sidewall top of multistage A/O pond (3) by rope traction, bottom shore pipe (8) is provided with at the bottom of the terminal reseavoir of described multistage A/O pond (3), the outer symmetrical of described multistage A/O pond (3) is provided with communicating pipe (9), the entrance end of described communicating pipe (9) is communicated with the side wall upper part of multistage A/O pond (3), the exit end of described communicating pipe (9) is communicated with the rear wall of multistage A/O pond (3), the two ends of described bottom shore pipe (8) are connected with the entrance end of described communicating pipe (9), the rear wall top of described multistage A/O pond (3) is provided with effluent trough (10), described effluent trough (10) is provided with rising pipe (11), the antetheca top of described anaerobic pond (1) is provided with overflow groove (12), described overflow groove (12) is communicated with mud return line (14) with water inlet pipe (13), pool wall between described anoxic pond (2) and multistage A/O pond (3) is provided with nitrification liquid reflux pump (15), is communicated with respectively by communicating aperture between described anaerobic pond (1) with anoxic pond (2) and between anoxic pond (2) with multistage A/O pond (3),
Described anaerobic pond (1) is also communicated with the reserving gaps between sidewall by pool wall therebetween with anoxic pond (2).
2. denitrogenation dephosphorizing water treatment device according to claim 1, is characterized in that: the quantity of described anaerobic pond (1) and anoxic pond (2) is two, and forms the anaerobic-anoxic processing unit of two groups of parallel connections.
3. denitrogenation dephosphorizing water treatment device according to claim 1, is characterized in that: be provided with low speed pushing flow agitator in described anaerobic pond (1) and anoxic pond (2).
4. denitrogenation dephosphorizing water treatment device according to claim 1, is characterized in that: described nitrification liquid reflux pump (15) is for leaning on wall type reflux pump.
5. denitrogenation dephosphorizing water treatment device according to claim 1, is characterized in that: described effluent trough (10) is provided with adjustment weir plate.
6. denitrogenation dephosphorizing water treatment device according to claim 1, is characterized in that: described overflow groove (12) is provided with cover plate.
7. denitrogenation dephosphorizing water treatment device according to claim 1, is characterized in that: described anaerobic pond (1) is provided with unwatering sump (16), and described unwatering sump (16) is communicated with blow-down pipe (17).
8. denitrogenation dephosphorizing water treatment device according to claim 1, is characterized in that: described multistage A/O pond (3) is Tu Chi.
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| CN201310188329.0A CN103241901B (en) | 2013-05-21 | 2013-05-21 | Nitrogen and phosphorus removal water treatment device |
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| CN201310188329.0A CN103241901B (en) | 2013-05-21 | 2013-05-21 | Nitrogen and phosphorus removal water treatment device |
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| CN103241901B true CN103241901B (en) | 2015-01-21 |
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| CN105174645B (en) * | 2015-10-13 | 2018-03-20 | 佰福聚能（天津）环保科技发展有限公司 | A kind of wastewater treatment energy-saving equipment and method of wastewater treatment |
| CN110980950A (en) * | 2019-12-23 | 2020-04-10 | 中广核环保产业有限公司 | Vertical flow multistage A/O sewage treatment device and sewage treatment method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0149978B1 (en) * | 1995-02-09 | 1999-03-30 | 최의소 | Advanced waste water treatment process by noxn removal from return activated sludge |
| CN2752252Y (en) * | 2004-10-13 | 2006-01-18 | 贾润 | Biology treatment pool of floating and separated suspension air filling device |
| CN101570383A (en) * | 2009-06-10 | 2009-11-04 | 北京工业大学 | Advanced nitrogen and phosphorus removal device and process control method thereof |
| CN101723510A (en) * | 2008-10-30 | 2010-06-09 | 机科发展科技股份有限公司 | Preliminary dexidation-anaerobism-oxygen deficit-multistage aerobic/anaerobic biological N and P removing method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203295322U (en) * | 2013-05-21 | 2013-11-20 | 山西省环境工程设计院(有限公司) | Nitrogen and phosphorus removal water-treatment device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0149978B1 (en) * | 1995-02-09 | 1999-03-30 | 최의소 | Advanced waste water treatment process by noxn removal from return activated sludge |
| CN2752252Y (en) * | 2004-10-13 | 2006-01-18 | 贾润 | Biology treatment pool of floating and separated suspension air filling device |
| CN101723510A (en) * | 2008-10-30 | 2010-06-09 | 机科发展科技股份有限公司 | Preliminary dexidation-anaerobism-oxygen deficit-multistage aerobic/anaerobic biological N and P removing method and device |
| CN101570383A (en) * | 2009-06-10 | 2009-11-04 | 北京工业大学 | Advanced nitrogen and phosphorus removal device and process control method thereof |
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