CN204958659U - AAO -MBR sewage treatment device - Google Patents
AAO -MBR sewage treatment device Download PDFInfo
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- CN204958659U CN204958659U CN201520617903.4U CN201520617903U CN204958659U CN 204958659 U CN204958659 U CN 204958659U CN 201520617903 U CN201520617903 U CN 201520617903U CN 204958659 U CN204958659 U CN 204958659U
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- aerobic pond
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- membrane cisterna
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Abstract
The utility model provides a AAO -MBR sewage treatment device, main anaerobism pond including mutual intercommunication, the oxygen deficiency pond, good oxygen pond and membrane cisterna, wherein good oxygen pond comprises the series connection of three corridor, oxygen pond c1 has been in proper order, the good oxygen pond c2 oxygen pond c3 that becomes reconciled, good oxygen pond c1, good oxygen pond c2, divide equally in the good oxygen pond c3 and do not dispose a aeration systems e1, the 2nd aeration systems e2 and the 3rd aeration systems e3, and be connected to the air -blower through pipeline and valve respectively, between membrane cisterna and the good oxygen pond, between good oxygen pond and the oxygen deficiency pond, be equipped with the return -flow system between oxygen deficiency pond and the anaerobism pond respectively. The utility model discloses can be under the prerequisite of a large amount of dissolved oxygens that make full use of membrane cisterna phegma carried, carry on alternately or aeration in turn to the three corridor in good oxygen pond, reduced the operating power consumption of MBR technology, realized MBR technology energy saving and consumption reduction optimal operation, improved the denitrogenation efficiency of tradition or current AAO -MBR technology simultaneously. The utility model discloses be suitable for the wastewater treatment process's of all kinds of activated sludge process and MBR combination optimal operation and control, have extensive adaptability.
Description
Technical field
The utility model belongs to technical field of sewage, relates to a kind of equipment of activated sludge process biologic process for treating sewage.
Background technology
Membrane Bio-reactor Technology (i.e. MBR sewage treatment process) is the product that membrane separation technique and dirty water living creature processing technique organically combine, this technology replaces the muddy water gravity settling separation process in traditional active sludge treating processes with super, microfiltration membrane sepn process, owing to adopting membrane sepn, very high biophase concentration and very excellent outlet effect can be kept.This technology has the advantages such as effluent quality is good and stable, floor space is little, excess sludge discharge is few, be not subject to the impact of sludge bulking, capacity of resisting impact load is strong, level of automation is high, operational management is easy.Along with the raising of sewage disposal plant effluent water quality standard, the reduction of film production cost and the improvement of film properties, membrane Bio-reactor Technology receives publicity day by day.
But along with the reduction of masking cost, the improvement of film properties, energy consumption problem becomes MBR technique day by day, the inhibition of energy consumption problem to MBR technique more highlights.Available data shows, and the average current drain of municipal sewage plant of current China is 0.29kWh/m
3, and the unit power consumption of MBR process spent water treatment plant is 0.6 ~ 0.9kWh/m
3, far above traditional biological sewage treatment process; In addition, from the energy consumption removed needed for unit pollutent, MBR technique removes unit COD
crenergy consumption be 1.40 ~ 2.76kWh/kgCOD
cr, and the energy consumption of traditional waste water treatment process is 1.01 ~ 1.54kWh/kgCOD
cr.According to statistics, in MBR sewage treatment process, the energy consumption of biochemical unit accounts for 90% of full factory total energy consumption, and among this, the energy consumption of blast aeration accounts for 65% of biochemical unit energy consumption; For the pollution on controlling diaphragm surface, the purging of high strength need be carried out to film surface by the mode of blast aeration, in general membrane cisterna, gas-water ratio is 10:1 ~ 20:1, its mixed solution dissolved oxygen concentration is up to 5.0mg/L ~ 10.0mg/L, if do not carry out scientific utilization to it, not only waste the energy consumption of blast aeration, improve cost of sewage disposal, but also will consume in a large amount of sewage and can utilize high-quality carbon source, be unfavorable for the outlet effect improving a whole set of Sewage treatment systems.
In addition, because MBR technique is that mud-water separation is carried out in the place one's entire reliance upon physics cut-off filter effect of film, the quality of effluent quality depends on membrane pore size, thus this technique have sludge concentration high, not by advantages such as mud expansion effects.Generally speaking, in MBR technique, the sludge age of its active sludge reaches 20 days, is about 3 times more than of traditional activated sludge process sludge age, and its sludge settling property corresponding also exists very big-difference.For the MBR technique that sludge age reaches 20 days, its sludge settling ratio SV is generally all higher than 80%; Visible, for maintaining the good muddy water admixture of the active sludge of this proterties, the measure should taked from traditional active sludge is different.
Therefore, in conjunction with the feature of MBR technique, the operation of MBR technique should be optimized and improvement, develop the equipment of a set of less energy-consumption, dynamical MBR membrane process optimizing operation.
Utility model content
The purpose of this utility model proposes a kind of AAO-MBR sewage disposal device, it can realize the flexible adjustment of biochemistry pool operation condition, maximally utilise membrane cisterna cross aeration produce dissolved oxygen while, the blast aeration amount reducing or eliminate needed for Aerobic Pond, ensureing and saving a large amount of energy consumption while improving effluent quality, and then reducing running cost.
The technical solution of the utility model is as follows:
A kind of AAO-MBR sewage disposal device, comprises the anaerobic pond, anoxic pond, Aerobic Pond and the membrane cisterna that are interconnected successively, is respectively arranged with submersible water impeller or agitator in described anaerobic pond and anoxic pond; Be provided with membrane module in membrane cisterna, anaerobic pond has water-in, and membrane cisterna has sludge outlet, and membrane module is connected with film purging motor and rising pipe; Wherein, comprising pipeline is connected logical with the first return-flow system of the first reflux pump with Aerobic Pond by described membrane cisterna, comprising pipeline is connected logical with the second return-flow system of the second reflux pump with anoxic pond by described Aerobic Pond, comprise pipeline and anoxic pond be connected with anaerobic pond logical with the 3rd return-flow system of the 3rd reflux pump.
Described Aerobic Pond is composed in series by three gallerys, be followed successively by Aerobic Pond c1, Aerobic Pond c2, Aerobic Pond c3, be configured with the first aerating system e1, the second aerating system e2 and the 3rd aerating system e3 in Aerobic Pond c1, Aerobic Pond c2, Aerobic Pond c3 respectively, and be connected to gas blower respectively by pipeline and valve.
The operation process flow process of described AAO-MBR sewage disposal device is above adopted to be: pretreated sewage flows through anaerobic pond, anoxic pond, Aerobic Pond and membrane cisterna in order, and excess sludge discharge from the sludge outlet of membrane cisterna, processes water and discharges from rising pipe; The mixed solution of anoxic pond passes back into anaerobic pond through the 3rd return-flow system, and the mixing of Aerobic Pond passes back into anoxic pond through the second return-flow system, and the mixed solution of membrane cisterna passes back into Aerobic Pond through the first return-flow system.
The following operation method of concrete employing;
, pretreated sewage enters anaerobic pond together with the mixed solution refluxed through the 3rd return-flow system, stop 1 ~ 2 hour in anaerobic pond; Wherein, the quantity of reflux Q3 entering anaerobic pond through the 3rd return-flow system be pre-treatment after 1 ~ 3 times of wastewater influent amount Q.
, anaerobic pond mixed solution enter anoxic pond together with the mixed solution refluxed through the second return-flow system, in anoxic pond stop 2 ~ 4 hours; Wherein, the quantity of reflux Q2 entering anoxic pond through the second return-flow system be pre-treatment after 2 ~ 4 times of wastewater influent amount Q.
, anoxic pond mixed solution enter in Aerobic Pond together with the mixed solution refluxed through the first return-flow system, in Aerobic Pond stop 3 ~ 8 hours; Wherein, the quantity of reflux Q1 entering Aerobic Pond through the first return-flow system be pre-treatment after 3 ~ 8 times of wastewater influent amount Q.
, Aerobic Pond mixed solution enter in membrane cisterna, in membrane cisterna, the residence time is 1 ~ 2 hour, the mixed solution in membrane cisterna through membrane module filter after through rising pipe water outlet.
Aerobic Pond c1, Aerobic Pond c2, Aerobic Pond c3 open aeration separately separately respectively by the first configured aerating system e1, the second aerating system e2, the 3rd aerating system e3, each aerating system opens the aeration time section that duration is 3 ~ 30 minutes at every turn, and the aeration time section of identical Aerobic Pond is separated by 30 ~ 60 minutes.
The utility model has following substantive distinguishing features and progress.
1. the utility model can according to the change of influent quality, the water yield and envrionment conditions, flexible adjustment System operational mode and flexibly adjustment Aerobic Pond operation condition, Aerobic Pond is in series by three gallerys and is provided with separately independently aerating system, the mutual or alternate run of the aerating system of each gallery of Aerobic Pond, also can independent operating; The a large amount of dissolved oxygens produced due to the strong aeration of membrane cisterna can be back to Aerobic Pond with the phegma of membrane cisterna, even if realize Aerobic Pond when not aeration, the high-solubility oxygen that membrane cisterna phegma also can be utilized to carry carries out nitrated and removal that is pollutent.
2. the utility model is in conjunction with the high feature of the sludge settling ratio SV of MBR technique, mutual or alternative aeration are carried out to each gallery of Aerobic Pond, under the prerequisite without the need to arranging agitator or impeller, good muddy water admixture can be realized, reduce further operation energy consumption and the construction investment of MBR technique.
3. can be AAOA-MBR technique by traditional AAO-MBR process reform, namely the change of operation condition is utilized, anoxic pond after realizing setting up after traditional AAO technique, raising system to the efficiency utilization of internal carbon source, realize endogenous denitrification, improve the denitrification efficiency of whole set process further.
The utility model can be used for the newly-built of AAO-MBR sewage work and improvement project, can reduce the process energy consumption of Sewage Plant, and the gas blower gas pushing quantity of the utility model technique can reduce by more than 50%, and processed in units energy consumption is corresponding reduction also.
Accompanying drawing explanation
Fig. 1 is a specific embodiment Equipments Setting schematic diagram of the present utility model.
Fig. 2 is the aeration sequence operation scheme schematic diagram of Aerobic Pond in embodiment one of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
Embodiment one, with reference to figure 1, a kind of AAO-MBR sewage disposal device, comprise be interconnected anaerobic pond a, anoxic pond b, Aerobic Pond c and membrane cisterna d.
Agitator a1 and b1 is respectively arranged with in described anaerobic pond a and anoxic pond b; Be provided with membrane module d1 in membrane cisterna d, membrane module d1 adopts hollow-fibre membrane, and anaerobic pond a has water-in, and membrane cisterna d has excess sludge relief outlet, and membrane module d1 connects gas blower d0 and rising pipe d2.
Described Aerobic Pond c is composed in series by three gallerys, be followed successively by Aerobic Pond c1, Aerobic Pond c2, Aerobic Pond c3, in Aerobic Pond c1, Aerobic Pond c2, Aerobic Pond c3, be configured with the first aerating system e1, the second aerating system e2, the 3rd aerating system e3 be connected to gas blower e0 respectively by pipeline and valve f1, valve f2, valve f3 respectively.
Present treatment equipment comprises three cover internal circulation systems: comprise pipeline and be connected with Aerobic Pond c1 by described membrane cisterna d logical with the first return-flow system R1 of the first reflux pump p1, comprising pipeline is connected logical with the second return-flow system R2 of the second reflux pump p2 with anoxic pond b by described Aerobic Pond c3, comprise pipeline and be connected with anaerobic pond a by anoxic pond b logical with the 3rd return-flow system R3 of the 3rd reflux pump p3.
Adopt above-mentioned AAO-MBR sewage disposal device, technical process is: pretreated sewage flows through anaerobic pond a, anoxic pond b, Aerobic Pond c and membrane cisterna d in order, excess sludge discharges from the excess sludge relief outlet of membrane cisterna d, and process water is discharged from rising pipe d2 by wet-pit p0; The mixed solution of anoxic pond b passes back into anaerobic pond a through the 3rd return-flow system R3, and the mixing of Aerobic Pond c passes back into anoxic pond b through the second return-flow system R2, and the mixed solution of membrane cisterna d passes back into Aerobic Pond c through the first return-flow system R1.
The following operation method of concrete employing;
, pretreated sewage enters anaerobic pond a together with the mixed solution refluxed through the 3rd return-flow system R3, stop 1.6 hours in anaerobic pond a; Wherein, the quantity of reflux Q3 entering anaerobic pond a through the 3rd return-flow system R3 be pre-treatment after 1.5 times of wastewater influent amount Q.
, anaerobic pond a mixed solution enter anoxic pond b together with the mixed solution refluxed through the second return-flow system R2, in anoxic pond b stop 3.8 hours; Wherein, the quantity of reflux Q2 entering anoxic pond b through the second return-flow system R2 be pre-treatment after 2 times of wastewater influent amount Q.
, anoxic pond b mixed solution enter in Aerobic Pond c together with the mixed solution refluxed through the first return-flow system R1, in Aerobic Pond c stop 6.7 hours; Wherein, the quantity of reflux Q1 entering Aerobic Pond c through the first return-flow system R1 be pre-treatment after 5 times of wastewater influent amount Q.
, Aerobic Pond c mixed solution enter in membrane cisterna d, in membrane cisterna d, the residence time is 1.5 hours; The water outlet after membrane module d1 filters of mixed solution in membrane cisterna d, excess sludge discharges from the excess sludge relief outlet of membrane cisterna d.
Aerobic Pond c1, Aerobic Pond c2, Aerobic Pond c3 is respectively by the first configured aerating system e1, second aerating system e2, 3rd aerating system e3 opens aeration in order in turn, in the present embodiment, each aerating system opens the aeration time section that duration is 10 minutes at every turn, the aeration time section of different Aerobic Pond is separated by 10 minutes, the aeration time section of identical Aerobic Pond is separated by 50 minutes, namely each aerating system opening time is: start (supposing to be now 0min) from system water inlet, Aerobic Pond c2, the second aerating system e2 of c3, 3rd aerating system e3 is closed by valve f2 and valve f3, the 1st aerating system e1 of Aerobic Pond c1 is in open mode by valve f1, run 10min, then shut-off valve f1, after 20min, opened the second aerating system e2, operation 10min, then the shut-off valve f2 of Aerobic Pond c2 by valve f2, after 40min, opened the 3rd aerating system e3, operation 10min, then the shut-off valve f3 of Aerobic Pond c3 by valve f3, after 60min, the running status of the aerating system (e1, e2, e3) of three gallerys (c1, c2, c3) of Aerobic Pond c enters the next cycle of operation, the alternate run time devided modulation of the aerating system of Aerobic Pond c1, Aerobic Pond c2, Aerobic Pond c3 as shown in Figure 2.
In the present embodiment, the mixed solution sludge concentration average out to MLSS=6g/L in anaerobic pond a, anoxic pond b and Aerobic Pond c, the mixed solution sludge concentration MLSS=8g/L in membrane cisterna d, mud length of time is 20 days.
In the present embodiment, the main water-quality guideline mean value in run duration water inlet is: CODcr is 195mg/L, NH
4 +-N is 22mg/L, TN is 25mg/L.The analytical procedure adopted in test is all according to the standard method in " water and waste water method for monitoring and analyzing (the 4th edition) ".According to above-mentioned specific embodiments, water outlet CODcr, NH
4 +the mean concns of-N, TN is 16mg/L, 1.4mg/L, 6.8mg/L.Effluent quality is better than " integrated wastewater discharge standard (GB8978-1996) " one-level A standard-required.
Claims (2)
1. an AAO-MBR sewage disposal device, comprise the anaerobic pond (a) be interconnected successively, anoxic pond (b), Aerobic Pond (c) and membrane cisterna (d), submersible water impeller or agitator is respectively arranged with in described anaerobic pond (a) and anoxic pond (b), membrane module (d1) is provided with in membrane cisterna (d), anaerobic pond (a) has water-in, membrane cisterna (d) has sludge outlet, membrane module (d1) is connected with film purging motor and rising pipe, wherein, comprising pipeline is connected logical with first return-flow system (R1) of the first reflux pump (p1) with Aerobic Pond (c) by described membrane cisterna (d), comprising pipeline is connected logical with second return-flow system (R2) of the second reflux pump (p2) with anoxic pond (b) by described Aerobic Pond (c), comprising pipeline is connected logical with the 3rd return-flow system (R3) of the 3rd reflux pump (p3) with anaerobic pond (a) by anoxic pond (b),
It is characterized in that: described Aerobic Pond (c) is composed in series by three gallerys, be followed successively by Aerobic Pond c1, Aerobic Pond c2, Aerobic Pond c3, be configured with the first aerating system (e1), the second aerating system (e2) and the 3rd aerating system (e3) in Aerobic Pond c1, Aerobic Pond c2, Aerobic Pond c3 respectively, and be connected to gas blower respectively by pipeline and valve.
2. AAO-MBR sewage disposal device according to claim 1, is characterized in that: described Aerobic Pond c3 is connected logical by the second return-flow system (R2) with anoxic pond (b).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520617903.4U CN204958659U (en) | 2015-08-17 | 2015-08-17 | AAO -MBR sewage treatment device |
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| CN201520617903.4U CN204958659U (en) | 2015-08-17 | 2015-08-17 | AAO -MBR sewage treatment device |
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| CN204958659U true CN204958659U (en) | 2016-01-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045042A (en) * | 2016-07-18 | 2016-10-26 | 胡勇飞 | Membrane-process sewage purification system and use method thereof |
| CN106145556A (en) * | 2016-08-30 | 2016-11-23 | 余浩 | Waste water purifying treatment system and operational approach thereof |
| CN108383320A (en) * | 2017-12-25 | 2018-08-10 | 湖南新九方科技有限公司 | A kind of integrated processing method of livestock breeding wastewater |
-
2015
- 2015-08-17 CN CN201520617903.4U patent/CN204958659U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045042A (en) * | 2016-07-18 | 2016-10-26 | 胡勇飞 | Membrane-process sewage purification system and use method thereof |
| CN106145556A (en) * | 2016-08-30 | 2016-11-23 | 余浩 | Waste water purifying treatment system and operational approach thereof |
| CN108383320A (en) * | 2017-12-25 | 2018-08-10 | 湖南新九方科技有限公司 | A kind of integrated processing method of livestock breeding wastewater |
| CN108383320B (en) * | 2017-12-25 | 2024-01-05 | 湖南新九方科技有限公司 | Integrated treatment method for livestock and poultry breeding wastewater |
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Address after: 510060 East seat, No. 348 East Ring Road, Guangzhou, Guangdong, Yuexiu District Patentee after: Guangzhou municipal engineering design and Research Institute Co., Ltd. Address before: 510060 East staircase, No. 348 East Ring Road, Guangzhou, Guangdong Patentee before: Guangzhou City Engineering Design studies total institute |