CN1151983C - Integral type film biological reactor - Google Patents
Integral type film biological reactor Download PDFInfo
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- CN1151983C CN1151983C CNB011206918A CN01120691A CN1151983C CN 1151983 C CN1151983 C CN 1151983C CN B011206918 A CNB011206918 A CN B011206918A CN 01120691 A CN01120691 A CN 01120691A CN 1151983 C CN1151983 C CN 1151983C
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- water
- reactor
- integral type
- film
- biological reactor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The present invention relates to an integrated membrane biological reactor. Raw water is lifted into the biological reactor through a grid or a screen mesh, a regulating tank and a pump; a membrane unit is arranged in the range from water surface of the biological reactor to 2.5 m below the water surface, the lower part of a membrane component is provided with an air-blowing pipe and a guide plate, and purified water is discharged by self-pressure or is pumped out. When the integrated membrane biological reactor of the present invention is used, energy consumption of unit water treatment is lowered by 49% to 64%, the cost of unit water treatment is lowered, and the economic practicality of the technology in water treatment application is enhanced.
Description
Technical field
The invention belongs to field of membrane bioreactor technology, particularly integral type film biological reactor.
Background technology
Mostly known integral type film biological reactor is deep water submerged membrane bioreactor system, and membrane module is inserted the bottom of bio-reactor, and water outlet is by the vacuum pump suction or utilize the head pressure on membrane module top to realize.Known integral type film biological reactor has 3 main drawbacks:
1. need higher air-blowing energy consumption.Because the film on the flushing membrane assembly pollutes and gives the required air that blasts of microorganism oxygenation in the pond, must overcome in the bio-reactor and could realize from the head pressure of the almost whole bio-reactor depth of water of aspiration tube place to pond water surface that the pond base fabric is established.Therefore, the about 1.0-2.4kWh/m of processing power consumption of integral type film biological reactor unit's water yield of using at present
3(Yamamoto K.et al., 1989, Wat.Sci.Tech., Vol21:(4/5), 43-54; Zheng Xiang etc., 2000, Techniques and Equipment for Environmental Pollution Control, Vol.1:(5), 12-19; Tatsuki Ueda andKenji Hata 1999, water research, 33,2888-2892; Gu Ping, Jiang Liqun, Yang Zaoyan, 2000, Chinese plumbing Vol.16:(3), 5-8).
2. the film permeability rate is low.The unit surface membrane flux generally only is 5-10L/m
2H0.1Mpa (Liu Rui, 1999, water supply and drainage, Vol.25:(1), 1-4).Because of the flushing energy consumption of film is big, the pollution that the backwash rate of film is difficult to bigger raising, film is difficult to effective removal, so the film permeability rate is low, and is big with membrane area.
3. membrane module is positioned at the bottom of bio-reactor, not easy cleaning and maintenance.
Summary of the invention
The object of the present invention is to provide a kind of in shoaling layer air-blowing carry out film flushing, can effectively reduce unit water treatment energy consumption, thereby reduce the integral type film biological reactor technology of unit water treatment expense, it is a kind of not only efficient but also economical and practical that membrane bioreactor is become, at home, the world water treatment and the waste water reclaiming technology of popularization and application as early as possible.
Integral type film biological reactor of the present invention comprises grid and screen cloth, equalizing tank, bio-reactor, film separation unit, the water tank etc. of purifying waste water.It is characterized in that: former water 1 enters equalizing tank 3 through grid or screen cloth 2, enter bio-reactor 7 through pump 4 liftings, the film separation unit 5 that is rearranged by several membrane modules as shown in Figure 2 is installed on the top of Chi Shui in the bio-reactor 7 or mud mixed liquid, membrane module is from the downward laying of the water surface, the last header 19 that is membrane module just is submerged under the water surface, and the following header 20 of membrane module is looked membrane module length and is submerged in the water layer in the water surface to 2.5 meter depth of water scope; Film silk 21 two ends of membrane module are bonded in it up and down between the header 19,20 in the accompanying drawing 2; The film that described film silk 21 adopts is ultra-filtration membrane or microfiltration membrane; The perforated pipe 6 that carries out flushing membrane silk 21 and give active sludge intermixture air-blowing oxygenation in the bio-reactor 7 simultaneously is equipped with in the bottom of film separation unit 5; The fitting depth of aspiration tube 6 in bio-reactor 7 looked following header 20 submergences of membrane module, is installed in the water layer in the water surface to 2.5 meter depth of water scope; Air-blowing perforated pipe 6 vertically is equipped with flow deflector 18 down to the bio-reactor bottom, the upper limb of flow deflector 18 is concordant with the air-blowing perforated pipe, flow deflector 18 lower rims are apart from bottom, bio-reactor 7 ponds 0.4-0.8 rice, and the effect of flow deflector 18 is to make the active sludge in the bio-reactor realize good reflux cycle in biological reaction tank.Carry out flushing membrane silk 21 and feed aspiration tube 6 by pneumatic pump 9 through air flowmeter 10, blast main 11 and air door 8 for the air of active sludge intermixture air-blowing oxygenation in the bio-reactor 7.Purify waste water and flow from extruding by described membrane module by suction pump 16 suctions or by the water level of membrane module top and the pressure difference of rising pipe 13 between clear water tanks 17 water outlet place water levels of purifying waste water.Purify waste water through water control valve door 12, purify water pipe 13, the flow meter 14 of purifying waste water, water purification valve 15 inflow clear water tanks 17.When purifying waste water when extruding the flowing water flow and can not meet the demands, close water purification valve 15, open clarified water pump 16, making purifies waste water enters cleaned water tank 17 by suction pump 16 suctions.
Principle of work of the present invention is to reduce the depth of water of top, membrane separation apparatus unit in the integral type film biological reactor greatly, promptly reduce aspiration tube when the flushing membrane assembly the head pressure that must overcome, effectively reduce the film flushing pressure and reach the purpose that reduces film flushing energy consumption thereby reach.The air-blowing pressure that washes away membrane module can be reduced to 2.5 meters depth of waters to the head scope between the water surface.As the length when membrane module is 0.3 meter, and membrane module is laid downwards from the water surface, and the following header of membrane module is in 0.3 meter depth of water place from the underwater, and the head that will overcome during air-blowing perforated pipe flushing membrane is about 0.3 meter; And for example, the length of membrane module is 0.5 meter, and membrane module is laid downwards from the water surface, and the following header of membrane module is in 0.5 meter depth of water place from the underwater, and the head that will overcome during air-blowing perforated pipe flushing membrane is about 0.5 meter.For another example, the length of membrane module is 1 meter, and membrane module is laid downwards from the water surface, and the following header of membrane module is in 1 meter depth of water place from the underwater, and the head that will overcome during air-blowing perforated pipe flushing membrane is about 1 meter.By that analogy, the length of membrane module is 2 meters, and membrane module is laid downwards from the water surface, and the following header of membrane module is in 2 meters depth of water places from the underwater, and the head that will overcome during air-blowing perforated pipe flushing membrane is about 2 meters.Present technique limits membrane module length and is no more than 2.5 meters.
The characteristics of integral type film biological reactor of the present invention are: 1, in shoaling layer, carry out the film flushing by air-blowing.Compare with known integral type film biological reactor, because the present invention's air-blowing in shoaling layer is washed film, even carry out under the condition of film flushing in same air-blowing amount, the air-blowing pressure that the present invention must overcome is less, therefore, the energy of air-blowing flushing membrane consumption is less.2, the big-and-middle bubble air-blowing device of employing is washed in the air-blowing of film, therefore can carry out the film flushing effectively, thereby a nearly step is reduced integral type film biological reactor unit's product water consumption effectively.
The present invention adopts the technical scheme at shoaling layer air-blowing flushing membrane to reduce the pressure that washes away the membrane module air-blowing effectively, and the operating pressure (be make the permeable water pressure that is applied to the film both sides of film poor) of the air-blowing pressure that washes away membrane module and film has been realized effective the separation.Under the prerequisite that does not increase total air-blowing energy consumption, can improve the air-blowing intensity of film flushing, the backwash rate that can solve the integral type film biological reactor film effectively is weak, the heavy contamination of film, the film permeability rate is lower and be difficult to stable problem.Broken through known integral type film biological reactor unit water treatment energy consumption height, the water treatment scale mostly is middle and small scale, and the restriction of scale unsuitable excessive (as ten thousand ton per days) makes the possibility that turns into that realizes extensive membrane bioreactor water treatment system.Membrane module places shoaling layer to bring convenience for the maintenance and the cleaning of film, can lower the construction costs of membrane bioreactor.
Description of drawings
Be further described below in conjunction with the technical scheme of drawings and Examples invention.
Fig. 1 is the process flow sheet of integral type film biological reactor water technology of the present invention; The implication of label is among Fig. 1: 1. former water, 2. grid and screen cloth, 3. equalizing tank, 4. pump, 5. film separation unit, 6. aspiration tube, 7. bio-reactor, 8. air door, 9. pneumatic pump, 10. air flowmeter, 11. blast mains, 12. water control valve doors, 13. purify water pipes, 14. purify waste water flow meter, 15. water purification valves, 16. clarified water pumps, 17. purify waste water water tank, 18. flow deflectors.
Fig. 2 is the synoptic diagram of the used membrane module of integral type film biological reactor water technology of the present invention; The implication of label is among Fig. 2: the last header of 19. membrane modules, the following header of 20. membrane modules, 21. film silks.
Embodiment
Please refer to Fig. 1, comprise grid and screen cloth, equalizing tank, bio-reactor, film separation unit, the water tank of purifying waste water, water pump, air-blowing pump and corresponding pipeline.With a scale is 24m
3/ d residential district reusing sewage engineering adopts known integral type film biological reactor technology and integral type film biological reactor technology of the present invention to carry out preliminary operation energy consumption analysis and comparison respectively.
Known integral type film biological reactor: bio-reactor depth of water 3m, membrane module length is 1m, promptly last header 19 upper edges of membrane module to the distance of following header 20 lower edges of membrane module is 1m.Gas-water ratio is 40: 1, and promptly total air-blowing amount is 40m
3/ h handles water yield 1m
3/ h, air-blowing pressure is about 30kPa, and air-blowing efficient is 0.44, and the energy consumption of handling the unit water yield is 0.89kWh/m
3
Adopt integral type film biological reactor technical scheme of the present invention, i.e. the integral type film biological reactor technology that the film flushing is carried out in air-blowing in shoaling layer: bio-reactor depth of water 3m, handle water yield 1m
3/ h, membrane module length is 1m, air-blowing pressure is about 10kPa; Total gas-water ratio also is 40: 1, and promptly total air-blowing amount is 40m
3/ h, air-blowing efficient is 0.44, the energy consumption of handling the unit water yield is 0.45kWh/m
3
Please refer to Fig. 1, comprise grid and screen cloth, equalizing tank, bio-reactor, film separation unit, the water tank of purifying waste water, water pump, air-blowing pump and corresponding pipeline.With a scale is 24m
3/ d residential district reusing sewage engineering adopts known integral type film biological reactor technology and integral type film biological reactor technology of the present invention to carry out preliminary operation energy consumption analysis and comparison respectively.
Known integral type film biological reactor: bio-reactor depth of water 3m, membrane module length is 0.5m, promptly last header 19 upper edges of membrane module to the distance of following header 20 lower edges of membrane module is 0.5m.Gas-water ratio is 40: 1, and promptly total air-blowing amount is 40m
3/ h handles water yield 1m
3/ h, air-blowing pressure is about 30kPa, and air-blowing efficient is 0.44, and the energy consumption of handling the unit water yield is 0.89kWh/m
3
Adopt integral type film biological reactor technical scheme of the present invention, i.e. the integral type film biological reactor technology that the film flushing is carried out in air-blowing in shoaling layer: bio-reactor depth of water 3m, handle water yield 1m
3/ h, membrane module length is 0.5m, air-blowing pressure is about 5kPa; Total gas-water ratio also is 40: 1, and promptly total air-blowing amount is 40m
3/ h, air-blowing efficient is 0.44, the energy consumption of handling the unit water yield is 0.32kWh/m
3
Relatively draw from embodiment 1 and embodiment 2: adopt integral type film biological reactor technical scheme of the present invention, promptly the said residential district of the integral type film biological reactor technical finesse present embodiment sewage that film washes is carried out in air-blowing in shoaling layer, the unit sewage disposal can be hanged down 49%-64% by the known integral type film biological reactor of loss-rate, thereby can the unit's of effectively reducing water treatment expense, improve the economic and practical that this technology is used in water treatment.
Claims (7)
1. an integral type film biological reactor comprises equalizing tank (3) and bio-reactor (7); Wherein, in the bio-reactor (7) film separation unit (5) is housed; Aspiration tube (6) is equipped with in the bottom of film separation unit (5), is used for by pneumatic pump (9) and blast main (11) bubbling air; Aspiration tube (6) vertically is equipped with flow deflector (18) down to bottom, bio-reactor (7) pond; Be connected with on the film separation unit (5) and be used to flow out the purification water pipe (13) and the clear water tanks (17) of purifying waste water; It is characterized in that:
The film separation unit (5) that is rearranged by membrane module is installed on the top in the bio-reactor (7), membrane module is made up of last header (19), following header (20) and film silk (21), and film silk (21) two ends are bonded between header (19), the following header (20); Membrane module makes the last header (19) of membrane module be installed in the underwater from the downward laying of the water surface, and the following header (20) of membrane module is installed in the water layer in the water surface to 2.5 meter depth of water scope.
2. according to the described integral type film biological reactor of claim 1, it is characterized in that, grid or screen cloth (2) also are housed on equalizing tank (3); Between equalizing tank (3) and bio-reactor (7), a pump (4) is housed also; Air flowmeter (10) and air door (8) also are housed between pneumatic pump (9) and aspiration tube (6); Water control valve door (12) also is housed between film separation unit (5) and clear water tanks, purify waste water flow meter (14) and water purification valve (15).
3. according to the described integral type film biological reactor of claim 2, it is characterized in that, also comprise a clarified water pump (16), in parallel with water purification valve (15), be used for when purifying waste water when extruding the stream underfed, close water purification valve (15), open clarified water pump (16), making purifies waste water enters cleaned water tank (17) by clarified water pump (16) suction.
4. according to the described integral type film biological reactor of claim 1, it is characterized in that described film separation unit (5) is made up of a plurality of membrane modules.
5. according to the described integral type film biological reactor of claim 1, it is characterized in that described aspiration tube (6) is a perforated pipe, be installed in the water layer in the water surface to 2.5 meter depth of water scope.
6. according to the described integral type film biological reactor of claim 1, it is characterized in that, described flow deflector (18) is vertically to install, and flow deflector (18) upper limb is concordant with aspiration tube (6), and flow deflector (18) lower rim is apart from bottom, bio-reactor (7) pond 0.4-0.8 rice.
7. according to the described integral type film biological reactor of claim 1, it is characterized in that the film that described film silk (21) adopts is ultra-filtration membrane or microfiltration membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011206918A CN1151983C (en) | 2000-12-15 | 2001-08-13 | Integral type film biological reactor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00135704 | 2000-12-15 | ||
| CN00135704.2 | 2000-12-15 | ||
| CNB011206918A CN1151983C (en) | 2000-12-15 | 2001-08-13 | Integral type film biological reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1358674A CN1358674A (en) | 2002-07-17 |
| CN1151983C true CN1151983C (en) | 2004-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011206918A Expired - Fee Related CN1151983C (en) | 2000-12-15 | 2001-08-13 | Integral type film biological reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1151983C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329315C (en) * | 2004-07-27 | 2007-08-01 | 金棠科技股份有限公司 | Membrane bioreactor |
| CN1323955C (en) * | 2005-09-23 | 2007-07-04 | 浙江大学 | Rotary disk type membrane bioreactor and its water treatment method |
| CN106186298A (en) * | 2016-09-14 | 2016-12-07 | 苏州科特环保股份有限公司 | A kind of integrated film bioreactor device of improvement |
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2001
- 2001-08-13 CN CNB011206918A patent/CN1151983C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1358674A (en) | 2002-07-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040602 Termination date: 20130813 |