CN101205100A - Integral combined process treatment reactor for city sewage - Google Patents
Integral combined process treatment reactor for city sewage Download PDFInfo
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- CN101205100A CN101205100A CNA2007100326858A CN200710032685A CN101205100A CN 101205100 A CN101205100 A CN 101205100A CN A2007100326858 A CNA2007100326858 A CN A2007100326858A CN 200710032685 A CN200710032685 A CN 200710032685A CN 101205100 A CN101205100 A CN 101205100A
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Abstract
The invention discloses a reactor of integrative combination technique for treating city sewage.The reactor comprises an anaerobic zone (2), a hypoxia zone (5), an aerobic zone (7) and a precipitate zone (11); one of sludge return tube (13) and another sludge return tube (14) which are provided with valves are connected with the anaerobic zone (2) and the hypoxia zone (5) from the precipitate zone (11) respectively; one of mixture return pipe (16) and another mixture return pipe (17) which are provided with valves are connected to front of the hypoxia zone (5) and the anaerobic zone (2) from end of the aerobic zone (7) and end of the hypoxia zone (5) respectively.The invention runs two sewage treatment techniques alternatively in the integrative reactor, by arranging an anaerobic pool, a hypoxia pool and an aerobic pool in the integrative reactor, nitrogen and phosphorus removal can be realized efficiently and economically.And under requirements of different conditions, the two techniques are alternatively run and technology resource is integrated, which can realize high-efficient and economical life sewage treatment function.
Description
Technical field
The present invention relates to a kind of integrated reactor, specifically is a kind of by two kinds of sewage treatment process: A of alternate run in integrated reactor
2/ O technology and UCT technology, thus the raising integrated reactor of efficient economy is to the integral combined process treatment reactor for city sewage of city domestic sewage denitrogenation dephosphorizing treatment effect.
Background technology
A
2/ O (Anaerobic-Anoxic-Oxic) technology is on the basis of original biological phosphate-eliminating A/O (Anaerobic-Oxic) technology, embeds an anoxic pond.Sewage carries out nitration reaction in Aerobic Pond, mixed-liquor return carries out denitrification denitrogenation to anoxic pond in the Aerobic Pond, settling tank phosphorus containing sludge partial reflux and former water enter anaerobic pond together, carry out anaerobic phosphorus release, again to the aerobic phosphorus of taking the photograph of Aerobic Pond, anaerobic-anoxic-aerobic Sludge System that is in series can realize denitrogenation dephosphorizing simultaneously so at last.A
2/ O technology is the starting point of present many denitrogenation dephosphorizing combined process, because its flow process is simple, easy to operate, can realizes denitrogenation dephosphorizing simultaneously in same system, thereby be widely used.
UCT (University of Cape town) technology is a kind of A of being similar to of Cape Town, RSA university exploitation
2The denitrification dephosphorization technique of/O technology.UCT technology and A
2/ O technology difference is the mud of settling tank is back to anoxic pond, the nitrate that carries in mud denitrification denitrogenation in anoxic pond, when having avoided being back to anaerobic pond to the influence of phosphor-removing effect.In order to remedy the loss of mud in the anaerobic pond, set up the mud backflow of anoxic pond simultaneously to anaerobic pond.The phosphor-removing effect of UCT technology obtains bigger raising, but has added return-flow system owing to whole, has also improved running cost.
Summary of the invention
The objective of the invention is in conjunction with above-mentioned A
2The advantage that two kinds of technologies of/O and UCT exist, but the integral combined process treatment reactor for city sewage of a kind of conserve space and cost of investment is provided, by closing down of mud return line net and mixed-liquor return pipe network in the control integrated reactor, realize alternate run A
2/ O technology and UCT technology.
To achieve the above object of the invention, the present invention has taked following process technology scheme:
Integral combined process treatment reactor for city sewage comprises anaerobic zone, oxygen-starved area, aerobic zone and settling region, and water inlet pipe is connected with anaerobic zone; Be provided with diving plug-flow stirrer in anaerobic zone, the oxygen-starved area; Aerobic zone is provided with a plurality of micro-pore aeration dishes; The front end of settling region is provided with commutating zone, and the rear end is provided with exhalant region, and gas blower is connected with aerobic zone; One of reflux sludge tube that is provided with valve is connected to anaerobic zone and oxygen-starved area respectively with two of reflux sludge tube from the settling region, be provided with two of one of the mixed-liquor return pipe of valve and mixed-liquor return pipe is connected to oxygen-starved area and anaerobic zone respectively by the end of the end of aerobic zone and oxygen-starved area front end.
For further realizing the object of the invention, described reactor also is provided with the excess sludge comb, after the excess sludge comb is located at the pipeline of one of reflux sludge tube, connects with the external world.
Described anaerobic zone, oxygen-starved area and aerobic district are provided with anaerobic zone division plate, oxygen-starved area division plate and the aerobic plate that separates respectively; Anaerobic zone division plate, oxygen-starved area division plate and aerobic zone dividing plate are divided into anaerobic zone, oxygen-starved area and aerobic zone three lattice, four lattice and three lattice respectively.
In three lattice of aerobic zone, be provided with 42 micro-pore aeration dishes.
Two of one of described reflux sludge tube and reflux sludge tube drawn from the settling region by same pipeline, is connected respectively to anaerobic zone and oxygen-starved area again.
On the two shared pipelines of one of described reflux sludge tube and reflux sludge tube, and one of mixed-liquor return pipe is respectively equipped with residual sea water pump with two of mixed-liquor return pipe.
Integral combined process treatment reactor for city sewage of the present invention is handled real life sewage, and treatment scale is 312m
3/ d, aerobic zone hydraulic detention time are 5.84 hours, and the anaerobic zone hydraulic detention time is 1.45 hours, and the oxygen-starved area hydraulic detention time is 2.25 hours.
Compared with the prior art, the present invention has following beneficial effect:
(1) the present invention is owing to being provided with valve in all reflux sludge tubes and the mixed-liquor return pipe, as operation A
2During/O technology, open one of reflux sludge tube and one of mixed-liquor return pipe, the closing volume sludge pipe two, two and excess sludge pipe of mixed-liquor return pipe; When operation UCT technology, open reflux sludge tube two, one of mixed-liquor return pipe and mixed-liquor return pipe two, one of closing volume sludge pipe and excess sludge pipe.This integral combined process treatment reactor for city sewage can move A flexibly
2/ O technology and UCT technology.
(2) compare by moving single adsorption biodegradation with actual sewage treatment plant, reactor of the present invention has bigger lifting to the removal effect of pollutent, wherein COD, ammonia nitrogen are all had good effect, water outlet COD is (real life sewage, treatment scale 312m below 50mg/L
3/ d), ammonia nitrogen is below 5mg/L; Removal effect to TN, TP all is better than the treatment effect that actual sewage treatment plant moves single adsorption biodegradation.
(3) contain phosphorus concentration when disposing of sewage when not high, operation A
2/ O technology can efficient economy the biological carbon and phosphorous removal that carries out handle; Contain phosphorus concentration when disposing of sewage higher and when requiring denitrogenation, operation UCT technology can effectively improve phosphor-removing effect, and can guarantee the denitrogenation requirement.The present invention carries out sewage disposal in integrated reactor, can conserve space and cost of investment; And in conjunction with two kinds of sewage treatment process, the integration technology advantage can be according to the requirement of different sewage processing, and flexible operates.
Description of drawings
Fig. 1 is an integral combined process municipal sewage treatment structure of reactor synoptic diagram of the present invention;
The integrated combination process municipal sewage treatment of Fig. 2-1 reactor A
2/ O technology is to the removal effect synoptic diagram of COD;
The integrated combination process municipal sewage treatment of Fig. 2-2 reactor UCT technology is to the removal effect synoptic diagram of COD;
Fig. 3-1 is the integrated combination of the present invention A
2The removal effect synoptic diagram of/O technology municipal sewage treatment ammonia nitrogen;
Fig. 3-2 is the removal effect synoptic diagram of the integrated combination of the present invention UCT technology municipal sewage treatment to ammonia nitrogen;
Fig. 4-1 is the integrated combination of the present invention A
2The municipal sewage treatment of/O technology is to the removal effect synoptic diagram of TN;
Fig. 4-2 is the removal effect synoptic diagram of the integrated combination of the present invention UCT technology municipal sewage treatment to TN;
Fig. 5-1 is the integrated combination of the present invention A
2The municipal sewage treatment of/O technology is to the removal effect synoptic diagram of TP.
Fig. 5-2 is the removal effect synoptic diagram of the integrated combination of the present invention UCT technology municipal sewage treatment to TP.
Embodiment
Come below in conjunction with Figure of description that the invention will be further described, but the present invention's scope required for protection is not limited to the scope described in the embodiment.
Device of the present invention as shown in Figure 1, integral combined process treatment reactor for city sewage comprises water inlet pipe 1, anaerobic zone 2, anaerobic zone division plate 3, diving plug-flow stirrer 4, oxygen-starved area 5, oxygen-starved area division plate 6, aerobic zone 7, aerobic zone dividing plate 8, micro-pore aeration dish 9, commutating zone 10, settling region 11 and exhalant region 12.By water (flow) direction, water inlet pipe 1 is located at the bight of anaerobic zone 2; All be provided with 2 diving plug-flow stirrers 4 in anaerobic zone 2 and the oxygen-starved area 5; Anaerobic zone division plate 3 oxygen-starved area division plates 6 and aerobic zone dividing plate 8 are divided into three lattice, four lattice and three lattice with anaerobic zone 2, oxygen-starved area 5 and aerobic zone 7 respectively; In three lattice of aerobic zone, be provided with 42 micro-pore aeration dishes 9; 2 gas blowers 18 are connected with aerobic zone 7.Commutating zone 10 is located at the front end of settling region 11; Exhalant region 12 is located at the end of settling region 11.Integral combined process treatment reactor for city sewage also is provided with reflux sludge tube 13, reflux sludge tube 14, excess sludge comb 15, mixed-liquor return pipe 16 and mixed-liquor return pipe 17; Reflux sludge tube 13 and reflux sludge tube 14 11 are connected to anaerobic zone 2 and oxygen-starved area 5 from the settling region respectively, and excess sludge comb 15 is in communication with the outside after being located at the pipeline of reflux sludge tube 13; This mode of connection can also be that 2 14 of one of reflux sludge tube 13 and reflux sludge tube drawn from the settling region by same pipeline, is connected respectively to anaerobic zone 2 and oxygen-starved area 5 again.Mixed-liquor return pipe 16 and mixed-liquor return pipe 17 are connected to the front end of oxygen-starved area 5 and anaerobic zone 2 respectively by the end of the end of aerobic zone 7 and oxygen-starved area 5.In above-mentioned all reflux sludge tubes and the mixed-liquor return pipe valve is set.As operation A
2During/O technology, open reflux sludge tube 13 and mixed-liquor return pipe 16, closing volume sludge pipe 14, mixed-liquor return pipe 17 and excess sludge pipe 15; When operation UCT technology, open reflux sludge tube 14, mixed-liquor return pipe 16 and mixed-liquor return pipe 17, closing volume sludge pipe 13 and excess sludge pipe 15.
On the 2 14 shared pipelines of one of reflux sludge tube 13 and reflux sludge tube, and one of mixed-liquor return pipe 16 and mixed-liquor return pipe 2 17 be respectively equipped with residual sea water pump 19.
Integral combined process treatment reactor for city sewage is provided with 4 diving plug-flow stirrers, two gas blower 18 diving plug-flow stirrers can controlling reactor in anaerobic zone and oxygen-starved area dissolved oxygen be 0.1～0.6mg/L.Gas blower aeration control aerobic zone dissolved oxygen is 1～3mg/L.
Improvements of the present invention are alternate run A in integrated reactor
2/ O technology and UCT technology are provided with all return-flow systems of two kinds of technologies, control closing down of each return-flow system by valve, flexibly two kinds of technologies of alternate run.
The present invention handles Guangzhou sewage work actual cities sewage with above-mentioned integral combined process reactor, and useful volume is 190m
3, treatment scale is 312m
3/ d, aerobic zone hydraulic detention time are 5.84 hours, and the anaerobic zone hydraulic detention time is 1.45 hours, and the oxygen-starved area hydraulic detention time is 2.25 hours.
Implementation result:
1, the removal effect of COD
By accompanying drawing 2-1, Fig. 2-2 as can be seen integral combined process city domestic sewage treatment reactor COD is had the good treatment effect.For handling real life sewage, water inlet COD is 150～250mg/L, and the water outlet COD of integral combined process treatment reactor for city sewage remains on below the 50mg/L, all can reach country's discharging primary standard.
2, the removal of nitrogen
2.1 the nitrification of ammonia nitrogen
By accompanying drawing 3-1, Fig. 3-2 as can be seen, under the enough situation of basicity, integral combined process city domestic sewage treatment reactor is very thorough for the nitrification of ammonia nitrogen.Integral combined process treatment reactor for city sewage in handling the process of sanitary sewage, influent ammonia nitrogen be 20mg/L, TN under the situation of mg/L more than 20, the final outflow water ammonia nitrogen all remains on below the 5mg/L, clearance wherein moves A more than 80%
2During/O technology the water outlet ammonia nitrogen some float, the water outlet ammonia nitrogen all remains on about 2mg/L during operation UCT technology.The existing large size city sewage work in Guangzhou technology ammonia nitrogen removal frank has only about 70%～80%, compares and has improved nitrogen removal rate about 10%.
2.2 denitrification denitrogenation effect
In the oxygen-starved area, denitrifying bacterium utilizes the COD of readily biodegradable in the water inlet to make electron acceptor(EA), makes nitrate be reduced into N
2Thereby, the nitrogen nutrition element is removed from water body.In integral combined process treatment reactor for city sewage, A
2/ O technology and UCT technology all can effectively be carried out the denitrification denitrogenation effect, and shown in Fig. 4-1, Fig. 4-2, the water outlet total nitrogen remains on about 10mg/L, and nitrogen removal rate is more than 50%.Under to real life sewage, TN influent concentration height, the bigger situation that fluctuates, improve the denitrification denitrogenation effect, can suitably increase the hydraulic detention time of oxygen-starved area, each conversion zone dissolved oxygen of strict controlling reactor is created good denitrification denitrogenation effect under the hypoxia.Guangzhou large size city sewage work technology nitrogen removal rate has only about 30%～40%, compares and has improved nitrogen removal rate about 20%.
3, the removal of P
The influence factor of the removal of phosphorus is also more.Integral combined process treatment reactor for city sewage can be eliminated the influence of the influence of DO, organic influence, nitrate as far as possible.The existence of oxygen-starved area is put the place of phosphorus for polyP bacteria provides an anaerobism, and directly the organism in the water inlet provides matrix for follow-up aerobic poly-phosphorus effect, eliminates the influence of nitrate nitrogen to the release of phosphorus to greatest extent from the oxygen-starved area backflow mixed liquor.
Shown in Fig. 5-1, Fig. 5-2, when total phosphorus changes more than 2mg/L in the real life sewage of water inlet, integral combined process treatment reactor for city sewage operation A
2/ O technology, though can be good carry out denitrification denitrogenation, the phosphor-removing effect shakiness, water outlet TP is about 0.5mg/L, the TP clearance is about 80%; At this moment move UCT technology, can keep water outlet TP about 0.2mg/L, clearance is more than 80%.The good phosphor-removing effect that integral combined process treatment reactor for city sewage is obtained under the situation to real life sewage treatment project state if will further improve dephosphorizing rate, can suitably increase the hydraulic detention time of anaerobic zone.Guangzhou large size city sewage work technology biological phosphate-eliminating clearance has only about 60%, compares to have improved and removes tp removal rate more than 20%.
Comprehensive above-mentioned experiment, integral combined process city domestic sewage treatment reactor of the present invention is as follows to the removal effect of pollutent: the removal effect to COD, ammonia nitrogen is good, and water outlet COD is below 50mg/L, and the ammonia nitrogen water outlet is below 5mg/L; The TN clearance at the TN clearance about 50%; To the clearance of TP about 80%.
Claims (6)
1. integral combined process treatment reactor for city sewage comprises anaerobic zone (2), oxygen-starved area (5), aerobic zone (7) and settling region (11), and water inlet pipe (1) is located at the bight of anaerobic zone (2); All be provided with diving plug-flow stirrer (4) in anaerobic zone (2), oxygen-starved area (5); Aerobic zone (7) is provided with a plurality of micro-pore aeration dishes (9); The front end of settling region (11) is provided with commutating zone (10), and the rear end is provided with exhalant region (12), and gas blower (18) is connected with aerobic zone (7); It is characterized in that, be provided with one of reflux sludge tube of valve (13) and reflux sludge tube two (14) (11) are connected to anaerobic zone (2) and oxygen-starved area (5) from the settling region respectively, be provided with two (17) of one of mixed-liquor return pipe of valve (16) and mixed-liquor return pipe is connected to oxygen-starved area (5) and anaerobic zone (2) respectively by the end of the end of aerobic zone (7) and oxygen-starved area (5) front end.
2. integral combined process treatment reactor for city sewage according to claim 1 is characterized in that described reactor also is provided with excess sludge comb (15), after excess sludge comb (15) is located at the pipeline of one of reflux sludge tube (13), connects with the external world.
3. integral combined process treatment reactor for city sewage according to claim 1 and 2 is characterized in that described anaerobic zone (2), oxygen-starved area (5) and aerobic zone (7) are respectively equipped with anaerobic zone division plate (3), oxygen-starved area division plate (6) and the aerobic plate (8) that separates; Anaerobic zone division plate (3), oxygen-starved area division plate (6) and aerobic zone dividing plate (8) are divided into three lattice, four lattice and three lattice with anaerobic zone (2), oxygen-starved area (5) and aerobic zone (7) respectively.
4. integral combined process treatment reactor for city sewage according to claim 3 is characterized in that being provided with 42 micro-pore aeration dishes in three lattice of aerobic zone (7).
5. integral combined process treatment reactor for city sewage according to claim 1, it is characterized in that one of described reflux sludge tube (13) and reflux sludge tube two (14) by same pipeline from the settling region (11) draw, be connected respectively to anaerobic zone (2) and oxygen-starved area (5) again.
6. integral combined process treatment reactor for city sewage according to claim 5, it is characterized in that on two (14) the shared pipelines of one of described reflux sludge tube (13) and reflux sludge tube, and one of mixed-liquor return pipe (16) and mixed-liquor return pipe two (17) be respectively equipped with residual sea water pump (19).
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| CN200710032685A CN101205100B (en) | 2007-12-18 | 2007-12-18 | Integral combined process treatment reactor for city sewage |
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| CN200710032685A CN101205100B (en) | 2007-12-18 | 2007-12-18 | Integral combined process treatment reactor for city sewage |
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| CN101205100B CN101205100B (en) | 2010-05-19 |
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| CN102153239A (en) * | 2011-04-19 | 2011-08-17 | 中冶南方工程技术有限公司 | Process and system for carrying out high-efficiency denitrification and dephosphorization treatment on urban sewage |
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| US3994802A (en) * | 1975-04-16 | 1976-11-30 | Air Products And Chemicals, Inc. | Removal of BOD and nitrogenous pollutants from wastewaters |
| CN2767434Y (en) * | 2005-02-05 | 2006-03-29 | 彭永臻 | Two-kind sludge denitrification and dephosphorization experiment device |
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| CN200953208Y (en) * | 2006-09-29 | 2007-09-26 | 北京工业大学 | A/O oxidation groove technology educational testing device |
| CN201141000Y (en) * | 2007-12-18 | 2008-10-29 | 华南理工大学 | A2/O and UCT technique integrated composite sewage treatment reactor |
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- 2007-12-18 CN CN200710032685A patent/CN101205100B/en not_active Expired - Fee Related
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| CN102153239A (en) * | 2011-04-19 | 2011-08-17 | 中冶南方工程技术有限公司 | Process and system for carrying out high-efficiency denitrification and dephosphorization treatment on urban sewage |
| CN102295346A (en) * | 2011-06-14 | 2011-12-28 | 江苏龙腾工程设计有限公司 | Adjustable biochemical tank and adjustable AAO process for water treatment |
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| CN105384311A (en) * | 2015-12-09 | 2016-03-09 | 浦华环保股份有限公司 | Method for processing high concentration comprehensive municipal sewage and apparatus thereof |
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