CN104058554A - A2O2-MBR sewage treatment process and device - Google Patents
A2O2-MBR sewage treatment process and device Download PDFInfo
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Abstract
本发明提供了一种A2O2-MBR污水处理工艺，包括以下步骤：S1、将污水输入厌氧池，在厌氧池内完成磷的释放及快速的氨化作用；S2、将厌氧池的水输入到缺氧池，在缺氧池内完成反硝化脱氮作用；S3、将缺氧池的水输入到好氧池，在好氧池内完成BOD（生化需氧量）的降解、硝化作用及磷的吸收；S4、将好氧池的水输入到沉淀池，在沉淀池内完成泥水分离；S5、将沉淀池所产生的上清液输入到MBR（膜生物反应器）反应池内的臭氧预氧化区；S6、将MBR反应池内的臭氧预氧化区内的水输入到MBR反应池内的MBR反应区内。本发明还提供了一种A2O2-MBR污水处理装置。本发明的有益效果是：流程精简、占地面积小、处理效果高效稳定。
The invention provides an A2O2-MBR sewage treatment process, comprising the following steps: S1, inputting the sewage into an anaerobic tank, and completing the release of phosphorus and rapid ammonification in the anaerobic tank; S2, inputting the water in the anaerobic tank To the anoxic pool, complete denitrification and denitrification in the anoxic pool; S3, input the water in the anoxic pool to the aerobic pool, and complete the degradation of BOD (biochemical oxygen demand), nitrification and phosphorus in the aerobic pool Absorption; S4, input the water from the aerobic tank to the sedimentation tank, and complete the separation of mud and water in the sedimentation tank; S5, input the supernatant produced in the sedimentation tank to the ozone pre-oxidation zone in the MBR (membrane bioreactor) reaction tank; S6. Input the water in the ozone pre-oxidation zone in the MBR reaction tank into the MBR reaction zone in the MBR reaction tank. The invention also provides an A2O2-MBR sewage treatment device. The beneficial effects of the invention are: streamlined process, small occupied area, efficient and stable treatment effect.
Description
Technical field
The present invention relates to sewage disposal, relate in particular to a kind of A2O2-MBR sewage treatment process and device thereof in sewage disposal.
Background technology
Anaerobic-anoxic-oxic (AAO) combined process system is the sewage treatment process system of widespread use always.It is consisted of three sections of biological treatment devices, be that with the difference of single-stage AO technique its leading portion arranges anaerobic reactor, be intended to make the removal of being degraded of part hardly degraded organic substance in waste water by anaerobic process, and then improve the biodegradability of waste water, and for follow-up anoxic section provides the carbon source that is suitable for denitrification process, finally reach the efficient object of removing COD, BOD, N, P.This technique can be called the simplest synchronous denitrogen dephosphorus technology in system, has a series of advantage.First, its total hrt is less than other class technique; Secondly, under anaerobism (anoxic), aerobic alternate run condition, thread fungus can not breed in a large number, is difficult for occurring mud filamentous bulking.In addition, the phosphorous height of mud, has higher fertilizer efficiency, and is in operation and does not need dispensing, and two A sections are also only with stirring gently, and working cost is low.
Yet, due to the raising of town sewage processing emission standard, being subject to the bottleneck effect of traditional activated sludge process technique, denitrogenation dephosphorizing efficiency cannot further improve, and traditional AAO technique cannot meet emission standard, needs badly and carries out efficient novel process research.In addition, stable state is to guarantee stable effluent quality and lower than the prerequisite of certain standard, existing most of sewage works are faced with processing power and promote and upgrading pressure.Simultaneously traditional mud-water separation process completes in second pond, and it is remarkable that in water outlet, suspension content is subject to the impact of mud-water separation effect, and second pond floor space is larger, more difficult adaptation urban land resource present situation day by day in short supply.Therefore, how on the basis of traditional AAO technique, to reduce sludge yield, improve mud-water separation effect, strengthen pollutant removal, optimize this technical process, realizing sewage treatment process efficient, stable, short distance becomes the focus that researchist pays close attention to.
The application of membrane separation technique in sewage disposal starts from late 1960s.The Smith of the U.S. in reported first in 1969 activated sludge process and the ultrafiltration membrane technique technical study in conjunction with Treating Municipal Sewage, proposed to replace the second pond in traditional activated sludge process by membrane separation technique, that utilizes membrane module efficiently holds back characteristic, make to maintain in reactor higher sludge concentration, in water treatment procedure, obtained splendid treatment effect, the initial blank of Here it is membrane bioreactor (MBR).Compare with many traditional biological water technologies, MBR has following major advantage: (1) effluent quality high-quality stable, and due to the high efficiency separation effect of film, separating effect is much better than traditional settling tank, processes water outlet extremely limpid; (2) floor space is little, occasion is not set and limits; (3) can remove ammonia nitrogen and hardly degraded organic substance; (4) convenient operation and management, is easy to realize automatic control; (4) be easy to transform from traditional technology.If can effectively solve membrane pollution problem, this technique can be used as the advanced treatment unit of traditional waste water treatment process, in fields such as city B-grade sewage treatment plant water outlet advanced treatment, has broad application prospects.
Since generation nineteen fifty, Ozonation starts for municipal effluent and Industrial Wastewater Treatment; The seventies, the treatment technology such as Ozonation and gac combined, and became sewage advanced processes and tap water and removed one of Main Means of chemical pollutant.Ozone oxidation not only can be destroyed the cytolemma that is not easy to be biodegradable etc., makes the intracellular matter can be soluble in water quickly, and simultaneous oxidation is not easy the macromolecular substance of hydrolysis, and making it is more easily Institute of Micro-biology's utilization.Mud is after ozonize, and suspended solids is dissolved, as secondary matrix, is that Institute of Micro-biology utilizes, and the organism of dissolving is carbonic acid gas and water by mineralising, can reach mud by the object of decrement.Meanwhile, ozone oxidation can be decomposed the secretory product of larger molecular organics and microorganism, thus effective decelerating membrane pollution problem.
If can combine with MBR and ozonation technology on traditional AAO technique basis, optimization technological process, propose the array mode of a suitable sewage treatment process, can overcome the shortcoming of traditional AAO technique, realize the mutual supplement with each other's advantages of ozone oxidation and MBR.Thereby make water outlet meet one-level A cleanup standard, realize that to take AAO technique be the upgrading of main sewage work, obtain efficient, stable, sludge yield is low, the sewage treatment technique that outlet effect is good.
Summary of the invention
In order to solve the problems of the prior art, the invention provides and a kind ofly can make full use of that the advantage of MBR technique the streamlining combining with ozone oxidation, floor space are little, A2O2-MBR sewage treatment process and the device thereof for the treatment of effect efficient stable.
The invention provides a kind of A2O2-MBR sewage treatment process, comprise the following steps:
S1, sewage is inputted to anaerobic pond, in anaerobic pond, complete the release of phosphorus and ammonification fast;
S2, the water of anaerobic pond is input to anoxic pond, in anoxic pond, completes denitrification denitrogenation effect;
S3, the water of anoxic pond is input to Aerobic Pond, in Aerobic Pond, completes BOD(biochemical oxygen demand (BOD)) the absorption of degraded, nitrification and phosphorus;
S4, the water of Aerobic Pond is input to settling tank, in settling tank, completes mud-water separation;
S5, the supernatant liquor that settling tank is produced are input to MBR(membrane bioreactor) ozone pre-oxidation district in reaction tank;
S6, the water in the ozone pre-oxidation district in MBR reaction tank is input in the MBR reaction zone in MBR reaction tank;
S7, water in the MBR reaction zone in MBR reaction tank is discharged through MBR membrane module, realize water outlet.
As a further improvement on the present invention, before step S6, to the ozone pre-oxidation district in MBR reaction tank, add ozone water.
As a further improvement on the present invention, step S4 is: a part of water of Aerobic Pond is input to settling tank, completes mud-water separation in settling tank; Another part water of Aerobic Pond is back to anoxic pond by internal recycle pipeline and completes denitrification.
As a further improvement on the present invention, step S5 is: the supernatant liquor that settling tank is produced is input to the ozone pre-oxidation district in MBR reaction tank; The mud that settling tank is produced is back to anaerobic pond by sludge return pipe, to maintain the sludge concentration of anaerobic pond.
As a further improvement on the present invention, step S5 is: the supernatant liquor that settling tank is produced is input to the ozone pre-oxidation district in MBR reaction tank; The mud that settling tank is produced is back to anaerobic pond by sludge return pipe, to maintain the sludge concentration of anaerobic pond; The excess sludge that settling tank is produced is discharged.
The present invention also provides a kind of A2O2-MBR waste disposal plant, comprise sewage input tube, anaerobic pond, anoxic pond, Aerobic Pond, settling tank, MBR reaction tank and water shoot, wherein, the delivery port of described sewage input tube is connected with the input aperture of described anaerobic pond, the delivery port of described anaerobic pond is connected with the input aperture of described anoxic pond, the delivery port of described anoxic pond is connected with the input aperture of described Aerobic Pond, the delivery port of described Aerobic Pond is connected with the input aperture of described settling tank, the supernatant liquor delivery port of described settling tank is connected with the input aperture of described MBR reaction tank, in described MBR reaction tank, be provided with and be divided into ozone pre-oxidation district, the division plate of MBR reaction zone, the input aperture of described MBR reaction tank is connected with described ozone pre-oxidation district, described ozone pre-oxidation district is connected with described MBR reaction zone, described MBR is provided with MBR membrane module in reaction zone, the delivery port of described MBR membrane module is connected with the input aperture of described water shoot.
As a further improvement on the present invention, between the delivery port of described Aerobic Pond and the input aperture of described anoxic pond, be connected with internal recycle pipeline.
As a further improvement on the present invention, between the mud delivery port of described settling tank and the mud input aperture of described anaerobic pond, be connected with sludge return pipe.
As a further improvement on the present invention, the mud delivery port of described settling tank is connected with the first excess sludge discharge pipe, in described settling tank, is provided with agitator.
As a further improvement on the present invention, the input aperture in described ozone pre-oxidation district is connected with ozone water input channel, and the mud delivery port of described MBR reaction zone is connected with the second excess sludge discharge pipe.
The invention has the beneficial effects as follows:
(1) set up efficient sewage biological treatment system, by the combined running of AAO technique and MBR, reach the object of removing the pollution substance in sewage;
(2) traditional AAO technique is carried out to simple upgrading, increase and process the water yield, improve effluent quality;
(3) before MBR reaction zone, set up ozone pre-oxidation district, can give full play to the effect of ozone, remove the larger molecular organics of hard degradation, and effectively reduce sludge yield, meanwhile, can effectively slow down the pollution of the MBR membrane module in follow-up MBR reaction zone;
(4) settling tank is fast set in short-term after Aerobic Pond, completes simple mud-water separation, thereby sludge concentration the unlikely backend process sludge quantity of assurance FEOL are less, reach the object of spoil disposal dephosphorization simultaneously;
(5) at technique end, MBR reaction tank is set, can effectively guarantees effluent quality, and play good mud-water separation effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of A2O2-MBR waste disposal plant of the present invention.
Embodiment
Below in conjunction with accompanying drawing explanation and embodiment, the present invention is further described.
Drawing reference numeral in Fig. 1 is: sewage input tube 100; Sludge return pipe 101; Internal recycle pipeline 102; Anaerobic pond 1; Anoxic pond 2; Aerobic Pond 3; Settling tank 4; Ozone pre-oxidation district 5; Agitator 6; Ozone water input channel 7; Water shoot 8; MBR reaction tank 9; The second excess sludge discharge pipe 10; The first excess sludge discharge pipe 11; Cross MBR membrane module 12;
The present invention need to solve that traditional AAO art breading efficiency cannot further improve, floor space is large and precipitation after water outlet concentration of suspension is higher, sludge yield is high problem.Proposed a kind ofly can make full use of that the advantage of MBR technique the streamlining combining with ozone oxidation, floor space are little, the new process for treating waste water that is suitable for AAO technique upgrading for the treatment of effect efficient stable, and by optimum combination, overcome AAO technique, MBR technique shortcoming separately, realized and having complementary advantages.
Solve the problems of the technologies described above, the technical solution used in the present invention is as follows:
As shown in Figure 1, a kind of A2O2-MBR sewage treatment process, comprises the following steps:
S1, sewage is inputted to anaerobic pond 1, in anaerobic pond 1, complete the release of phosphorus and ammonification fast;
S2, the water of anaerobic pond 1 is input to anoxic pond 2, in anoxic pond 2, completes denitrification denitrogenation effect;
S3, the water of anoxic pond 2 is input to Aerobic Pond 3, in Aerobic Pond 3, completes the absorption of degraded, nitrification and the phosphorus of BOD;
S4, the water of Aerobic Pond 3 is input to the settling tank 4 of simple underload, in settling tank 4, complete mud-water separation, this settling tank 4 is preferably rapid sedimentation tank, completes simple mud-water separation in rapid sedimentation tank, thereby can keep the sludge concentration of MBR reaction tank 9 to be in suitable scope;
S5, the supernatant liquor that settling tank 4 is produced are input to the ozone pre-oxidation district 5 in MBR reaction tank 9, in ozone pre-oxidation district 5, difficult degradation macromole in sewage is had an opportunity by ozone oxidation, simultaneously ozone also can biolytic cellularstructure, can biodegradable material thereby microbiological oxidation is become, reach the object of mud decrement and slow down the pollution problem of the MBR membrane module 12 of MBR reaction zone, rear end;
S6, by the water in the ozone pre-oxidation district 5 in MBR reaction tank 9 through ozone oxidation in short-term, then be input in the MBR reaction zone in MBR reaction tank 9;
S7, water in the MBR reaction zone in MBR reaction tank 9 is discharged through MBR membrane module 12, realize water outlet, MBR reaction tank 9 is as last procedure that ensures effluent quality, in the interior generation nitrification of MBR reaction tank 9 and good mud-water separation effect, thereby make water outlet reach one-level A emission standard.
As shown in Figure 1, can to the ozone pre-oxidation district 5 in MBR reaction tank 9, add ozone water by the arbitrary steps before step S6.
As shown in Figure 1, step S4 is: a part of water of Aerobic Pond 3 is input to settling tank 4, in settling tank 4, completes mud-water separation; Another part water of Aerobic Pond 3 is back to anoxic pond 2 by internal recycle pipeline 102 and completes denitrification.
As shown in Figure 1, step S5 is: the supernatant liquor that settling tank 4 is produced is input to the ozone pre-oxidation district 5 in MBR reaction tank 9; The mud that settling tank 4 is produced is back to anaerobic pond 1 by sludge return pipe 101, to maintain the sludge concentration of anaerobic pond 1.
As shown in Figure 1, step S5 is: the supernatant liquor that settling tank 4 is produced is input to the ozone pre-oxidation district 5 in MBR reaction tank 9; The mud that settling tank 4 is produced is back to anaerobic pond 1 by sludge return pipe 101, to maintain the sludge concentration of anaerobic pond 1; The excess sludge that settling tank 4 is produced is discharged.
As shown in Figure 1, a kind of A2O2-MBR sewage treatment process provided by the invention, at the end of whole technique, add MBR reaction tank as one of enhancements of technique, can guarantee the outlet effect of whole reaction system, and play the effect of settling tank, reach good mud-water separation effect, meanwhile, MBR reaction tank, because sludge age is longer, can be removed the organism of more difficult removal and maintain higher denitrification effect.Leading portion in MBR reaction zone adds ozone pre-oxidation district, can bring into play the function of ozone, slows down the pollution of MBR membrane module and removes difficult degradation larger molecular organics.
As shown in Figure 1, a kind of A2O2-MBR waste disposal plant, comprise sewage input tube 100, anaerobic pond 1, anoxic pond 2, Aerobic Pond 3, settling tank 4, MBR reaction tank 9 and water shoot 8, wherein, the delivery port of described sewage input tube 100 is connected with the input aperture of described anaerobic pond 1, the delivery port of described anaerobic pond 1 is connected with the input aperture of described anoxic pond 2, the delivery port of described anoxic pond 2 is connected with the input aperture of described Aerobic Pond 3, the delivery port of described Aerobic Pond 3 is connected with the input aperture of described settling tank 4, the supernatant liquor delivery port of described settling tank 4 is connected with the input aperture of described MBR reaction tank 9, in described MBR reaction tank 9, be provided with and be divided into ozone pre-oxidation district 5, the division plate of MBR reaction zone, the input aperture of described MBR reaction tank 9 is connected with described ozone pre-oxidation district 5, described ozone pre-oxidation district 5 is connected with described MBR reaction zone, described MBR is provided with MBR membrane module 12 in reaction zone, the delivery port of described MBR membrane module 12 is connected with the input aperture of described water shoot 8.
As shown in Figure 1, between the delivery port of described Aerobic Pond 3 and the input aperture of described anoxic pond 1, be connected with internal recycle pipeline 102.
As shown in Figure 1, between the mud delivery port of described settling tank 4 and the mud input aperture of described anaerobic pond 1, be connected with sludge return pipe 101.
As shown in Figure 1, the mud delivery port of described settling tank 4 is connected with the first excess sludge discharge pipe 11, in described settling tank 4, is provided with agitator 6.
As shown in Figure 1, the input aperture in described ozone pre-oxidation district 5 is connected with ozone water input channel 7, and the mud delivery port of described MBR reaction zone 5 is connected with the second excess sludge discharge pipe 10.
As shown in Figure 1, the principle of work of a kind of A2O2-MBR waste disposal plant provided by the invention is:
Sewage enters anaerobic pond 1 from sewage input tube 100, completes the release of phosphorus and ammonification fast in anaerobic pond 1, and then the water outlet of anaerobic pond 1 enters anoxic pond 2, completes denitrification denitrogenation effect in anoxic pond 2; The water outlet of anoxic pond 2 enters Aerobic Pond 3 and completes BOD(biochemical oxygen demand (BOD)) the absorption of degraded, nitrification and phosphorus;
Settling tank 4 is easy deposition facility, surface load is less, the water outlet of Aerobic Pond 3 enters after settling tank 4, through of short duration muddy water, process, water outlet contains a certain amount of mud, enters ozone pre-oxidation district 5, the mud of settling tank 4 bottoms is back to anaerobic pond 1 by sludge return pipe 101, thereby guarantee the sludge concentration in anaerobic pond 1, excess sludge (containing abundant phosphorus) is discharged by the first excess sludge discharge pipe 11, thereby phosphorus is removed;
Ozone water adds ozone pre-oxidation district 5 through ozone water input channel 7, in ozone pre-oxidation district 5, strong oxidation due to ozone, can decompose macromole hardly degraded organic substance, and cellularstructure that can destroy microorganisms makes it be decomposed into the organic substance being easily biodegradable, thereby reach the object of mud decrement; In addition, ozone can decompose the materials such as extracellular polymeric that Institute of Micro-biology produces, thereby can slow down the pollution of the MBR membrane module 12 of rear end MBR reaction tank 9;
The water of the of short duration oxide treatment in process ozone pre-oxidation district 5 enters the MBR reaction zone of MBR reaction tank 9, in MBR reaction zone, can continue biological degradation, final outflow water is discharged by water shoot 8 through MBR membrane module 12, and the MBR membrane module 12 in MBR reaction tank 9 has also played outstanding mud-water separation effect when guaranteeing effluent quality.
The advantage of a kind of A2O2-MBR sewage treatment process provided by the invention and device thereof is:
(1) set up efficient sewage biological treatment system, by the combined running of AAO technique and MBR, form A2O2-MBR technique (being anaerobic-anoxic-oxic-aerobic-MBR), reach the object of removing the pollution substance in sewage;
(2) traditional AAO technique is carried out to simple upgrading, increase and process the water yield, improve effluent quality;
(3) before MBR reaction zone, set up ozone pre-oxidation district 5, can give full play to the effect of ozone, remove the larger molecular organics of hard degradation, and effectively reduce sludge yield, meanwhile, can effectively slow down the pollution of the MBR membrane module 12 in follow-up MBR reaction zone;
(4) settling tank 4 is fast set in short-term after Aerobic Pond 3, completes simple mud-water separation, thereby sludge concentration the unlikely backend process sludge quantity of assurance FEOL are less, reach the object of spoil disposal dephosphorization simultaneously;
(5) at technique end, MBR reaction tank 9 is set, can effectively guarantees effluent quality, and play good mud-water separation effect.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
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| CN106045236A (en) * | 2016-08-08 | 2016-10-26 | 张哲麟 | Technology for treating high-nitrogen, high-carbon and high-chroma organic sewage |
| CN106430835A (en) * | 2016-11-07 | 2017-02-22 | 天津傲人环保科技有限公司 | Embedded ozone membrane bioreactor (MBR) device and embedded ozone MBR treatment method |
| CN107434298A (en) * | 2017-08-23 | 2017-12-05 | 长沙中联重科环境产业有限公司 | Gallery type sewage disposal system and the method that sewage disposal is carried out using the system |
| CN107434298B (en) * | 2017-08-23 | 2021-03-02 | 长沙中联重科环境产业有限公司 | Corridor type sewage treatment system and method for treating sewage by using same |
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| CN110550827A (en) * | 2019-09-26 | 2019-12-10 | 湖南沃工环境科技有限公司 | Environment-friendly energy-saving domestic sewage treatment equipment |
| CN115466009A (en) * | 2022-09-01 | 2022-12-13 | 上海莲立环境有限公司 | Municipal sludge hydrothermal carbonization pressure filtrate nano tube standard-reaching treatment process and treatment system thereof |
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Application publication date: 20140924 |