CN203700018U - Pulse energy-saving MBR (Membrane Biological Reactor) device - Google Patents

Pulse energy-saving MBR (Membrane Biological Reactor) device Download PDF

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Publication number
CN203700018U
CN203700018U CN201320887657.5U CN201320887657U CN203700018U CN 203700018 U CN203700018 U CN 203700018U CN 201320887657 U CN201320887657 U CN 201320887657U CN 203700018 U CN203700018 U CN 203700018U
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China
Prior art keywords
membrane
water
trip switch
filler
aeration
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Expired - Lifetime
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CN201320887657.5U
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Chinese (zh)
Inventor
陈福泰
杨艳
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Beijing Qingda Guohua Film Technology Co ltd
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BEIJING QINGDA GUOHUA ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The utility model relates to a pulse energy-saving MBR (Membrane Biological Reactor) device which comprises a membrane pool, a membrane modulus unit, an aerating pipe and an aerator, wherein a water inlet pump is installed at the water inlet of the membrane pool, the membrane modulus unit is arranged in the membrane pool, and the membrane modulus unit comprises a plurality of membrane elements and water collecting pipes. The membrane elements are arranged in the membrane modulus unit at intervals and each membrane element is provided with a water outlet for collecting purified water. The water outlet on each membrane element is communicated with the water collecting pipe through a pipeline, and the outlet of the water collecting pipe is connected with a water yielding pump. The device is characterized in that the aerating pipe is located below the membrane modulus unit, the outlet of the aerator is sequentially connected with a control switch and an aerating pipe, and the control switch can automatically control the pulse aerating manner according to balance of water and air pressure. The device provided by the utility model is low in energy consumption, light in membrane pollution degree, less in equipment investment cost, simple in structure, small in occupied area, concise to operate and convenient for automated operation and control.

Description

A kind of pulse energy saving formula MBR device
Technical field
The utility model belongs to environmental technology field, and particularly a kind of pulse energy saving formula MBR device, belongs to waste water treatment process and integrated equipment.
Background technology
Membrane bioreactor (Membrane Bioreactor, be called for short MBR) is one of waste water reclaiming regenerative use technology of the tool potentiality that grow up for 20 end of the centurys.Membrane separation technique is introduced biological treatment of waste water system by MBR, utilizes membrane separation technique and bioreaction technology advantage separately, a kind of High-efficient Water treatment system of developing.It has the advantages such as effluent quality good stable, floor space is little, activated sludge concentration is high, surplus sludge volume is few, operational management is simple.
MBR technique, as the efficient water technology of one, is in development and improves the stage, himself still exists certain defect to need further to solve.At present, operation energy consumption height and membrane pollution problem are the Main Bottlenecks of restriction MBR engineering application.Wherein aeration energy consumption is the basic reason that determines MBR operation energy consumption, and it accounts for the more than 80% of whole service energy consumption.In addition, because film is easily polluted in operational process, cause flux to decline, increase cleaning frequency membrane and film replacement frequency, directly affected efficiency and the work-ing life of film group device, increased working cost, hindered its widespread use in practice.
Summary of the invention
The utility model provides oneplant pulse energy saving formula MBR device, solved the problems such as in existing MBR, aeration energy consumption is high, film easily pollutes, working cost height.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of pulse energy saving formula MBR device, wherein, comprise membrane cisterna, film group device, aeration tube and aerator, the water-in of described membrane cisterna is provided with intake pump, described film group device is arranged in membrane cisterna, described film group device comprises some membrane elements and header, described membrane element is located in described film group device at each interval, each membrane element is provided with water outlet, be used for collecting water purification, and the water outlet on each membrane element is all communicated with header by pipeline, the outlet of described header is connected with product water pump, described aeration tube is positioned at the below of film group device, the outlet of described aerator is connected with trip switch and aeration tube in turn, described trip switch can be according to water, air pressure balance automatic-control pulse aeration mode, in the time that the suffered normal atmosphere of trip switch is greater than suffered hydraulic pressure, trip switch is opened, gas enters aeration tube along pipeline, in the time that the suffered normal atmosphere of trip switch is less than or equal to suffered hydraulic pressure, trip switch cuts out, and is so concatenated to form with pulse aeration.
Further, a kind of preferred version of the present utility model: described membrane element is the one in flat sheet membrane, hollow-fibre membrane and tubular membrane, more preferably flat sheet membrane.
Further, a kind of preferred version of the present utility model: described membrane element is filled with filler.Filler is one or more in urethane filler, combined stuffing, elastic filler.
Further, a kind of preferred version of the present utility model: described membrane element is filled with filler.Described filler be shaped as honeycomb sponge shape, spherical, sheet, strip, more preferably adopt honeycomb sponge shape.Carrier material used can be can be organically also inorganic, and preferred, material therefor is polyurethane elastomer.
A method of utilizing pulse energy saving formula MBR device of the present utility model to dispose of sewage, comprises the following steps:
(1) waste water is squeezed in membrane cisterna through intake pump, after mixing, enters film group device with active sludge in membrane cisterna and/or filler;
(2) by aerator to aeration tube air feed, trip switch can be according to water, air pressure balance automatic-control pulse aeration mode, in the time that the suffered normal atmosphere of trip switch is greater than suffered hydraulic pressure, trip switch is opened, gas enters aeration tube along pipeline; In the time that the suffered normal atmosphere of trip switch is less than or equal to suffered hydraulic pressure, trip switch cuts out, so be concatenated to form pulse aeration, aeration is distributed in film group device mud mixed liquid and/or uniform filling, and the air that the bubbles entrain filler that aeration produces carries out continuous effective to membrane element washes away and cleans;
(3) the header multiparity water pump of film group device suction water outlet, swabbing pressure is 1 ~ 100kPa, permeant flux is at 1~100 L/m 2.h.
Further, a preferred embodiment of the present invention: described product water pump intermittent operation, suction 5-15min, stop pumping 1-5min.
Further, a preferred embodiment of the present invention: when described product water pump intermittent operation, adopt intensity adjustable aeration, while producing water pump suction, control gas-water ratio at 5-30:1, while producing water pump stop pumping, control gas-water ratio at 5-45:1.
the beneficial effects of the utility model:
The utility model compared with prior art has the following advantages and high-lighting effect:
(1) adopt water, air pressure balance automatic-control pulse aeration mode, trip switch is set on aeration tube, under aeration effect, the air pressure suffered when trip switch progressively rises, in the time that the suffered air pressure of trip switch is greater than the suffered hydraulic pressure of trip switch, trip switch is opened, and gas enters aeration tube along pipeline; Gas enters after aeration tube, and the suffered air pressure of trip switch reduces, and in the time that the suffered air pressure of trip switch is less than or equal to suffered hydraulic pressure, switch cuts out, and aeration stops; So be concatenated to form with pulse aeration, can significantly improve hydrodynamic performances and mass transfer coefficient in group device, meanwhile, reduced the release of EPS and the stripping of SMP in mixed solution, effectively alleviate film and pollute.
(2) adopt intensity adjustable aeration mode, , in the time that producing water pump suction, MBR adopts lower aeration intensity, control gas-water ratio at 5-30:1, in the time that producing water pump stop pumping, MBR adopts higher aeration intensity, control gas-water ratio at 5-45:1, (can adopt two pumps control, when low intensity aeration, adopt a pump, when high strength aeration, adopt two pumps to open simultaneously) like this, in suction time interval, what the mud flco that interconnects was looser is attached to film surface, form the deposition resistant layer of " relaxing ", be conducive to rest in sky aeration time, when the external and internal pressure of film group device reaches balance very soon, the aeration that before the aeration increasing, degree produces rapidly washes away, the shearing force on the turbulent extent of enhance liquid box out and film surface, reduce rapidly the deposition of pollutent on film surface, the suspended impurity and the mud that adhere to are repelled, the speed that the settled layer that slows down forms on film surface, reduce resistance of membrane filtration and face pressure reduction, be conducive to film group device and keep for a long time higher infiltration rate, on the other hand, intensity adjustable aeration, is conducive to biomembranous replacement, maintain its " fresh " state, " lax tack " and " reversibility " polluted of having strengthened film surface Dynamic Membrane, the film in mud mixed liquid pollutes and has obtained to a certain extent " alleviation ", is conducive to the control that film pollutes.
(3) adopt water, air pressure balance automatic-control pulse aeration mode, avoid adopting a shortcoming that needs to change magnetic valve for short, 2-3 of the life-span that in the mechanical type pulse aeration mode use procedure of magnetic valve, magnetic valve frequent start-stop causes month, and, save facility investment and running cost.
(4) in MBR membrane cisterna, add filler, enriched the living species of reactor, the bacterium that in reactor, grow generation time breeds in a large number on carrier, and on filler, distinctive metazoan and anaerobic bacterium have been strengthened the decomposition to hardly degraded organic substance.
(5) in MBR membrane cisterna, add the microorganism of filler postadhesion on it constantly to grow, breed, suspended biological is suppressed due to foodstuff competition, causes the reduction of MLSS value, has alleviated the pollution of film group device.
The utility model energy consumption is low, and film pollution level is light, and facility investment expense is few, and apparatus structure is simple, and floor space is little, operation is succinct, be convenient to automatic operation control.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of an embodiment of the present utility model;
In figure, 1 is aerator, and 2 is trip switch, and 3 is film group device, and 31 is header, and 32 is membrane element, and 4 is membrane cisterna, and 5 is intake pump, and 6 for producing water pump, and 7 is filler, and 8 is aeration tube.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of instructions such as " outward " are orientation or the position relationship based on described in accompanying drawing, only the utility model and simplified characterization for convenience of description, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can particular case understand the concrete meaning of above-mentioned term in the utility model.
embodiment 1
As described in Figure 1, a kind of pulse energy saving formula MBR device, wherein, comprise membrane cisterna 4, film group device 3, aeration tube 8 and aerator 1, the water-in of membrane cisterna 4 is provided with intake pump 5, film group device 3 is arranged in membrane cisterna 4, film group device 3 comprises some membrane elements 32 and header 31, membrane element 32 is located in film group device 3 at each interval, each membrane element 32 is provided with water outlet, be used for collecting water purification, and the equal pipeline of water outlet on each membrane element 32 is communicated with header 31, the outlet of header 31 is connected with produces water pump 6, aeration tube 8 is positioned at the below of film group device 3, the outlet of aerator 1 is connected with in turn according to trip switch 2 and aeration tube 8.Trip switch 2 can be according to water, air pressure balance automatic-control pulse aeration mode, and in the time that the suffered normal atmosphere of trip switch 2 is greater than suffered hydraulic pressure, trip switch 2 is opened, and gas enters aeration tube 8 along pipeline; In the time that the suffered normal atmosphere of trip switch 2 is less than or equal to suffered hydraulic pressure, trip switch 2 cuts out, and is so concatenated to form pulse aeration.
Aerator 1 of the present utility model has two.
Operational process: waste water is squeezed in membrane cisterna 4 through intake pump 5, and active sludge in membrane cisterna 4 enters film group device 3 by the space between membrane element 32 after mixing; Aerator 1, to aeration tube 8 air feed, is equipped with according to trip switch 2 in the outlet of aerator 1.Trip switch 2 can be according to water, air pressure balance automatic-control pulse aeration mode, and in the time that the suffered normal atmosphere of trip switch 2 is greater than suffered hydraulic pressure, trip switch 2 is opened, and gas enters aeration tube 8 along pipeline; In the time that the suffered normal atmosphere of trip switch 2 is less than or equal to suffered hydraulic pressure, trip switch 2 cuts out, and is so concatenated to form pulse aeration; Under aeration effect, mud mixed liquid and filler 7 are evenly distributed in film group device 3, and the air that membrane element 32 is carried out to continuous effective washes away and cleans, and the header 31 multiparity water pumps 6 of film group device 3 aspirate water outlet, swabbing pressure is-1 ~-100kPa, and permeant flux is at 1~100L/m 2.h; Produce water pump 6 intermittent operatioies, suction 5-15min, stop pumping 1-5min; When product water pump 6 aspirates, start aerator 1 air feed, control gas-water ratio at 5-30:1, while producing water pump 6 stop pumping, start two aerator 2 air feed, control gas-water ratio at 5-45:1; When permeant flux be reduced to design flux 80% time, need to clean film group device 3.
The control of gas-water ratio when aeration of the present utility model also can be controlled by other means, produces water pump 6 while aspirating as long as can reach, and controls gas-water ratio at 5-30:1, while producing water pump 6 stop pumping, controls gas-water ratio at 5-45:1.
In embodiment more of the present utility model, membrane element 32 can adopt flat sheet membrane, hollow-fibre membrane, tubular membrane, preferably, membrane element 32 is selected flat sheet membrane, microbial immobilized carrier can effectively wash away flat membrane component 32 under the drive of bubble, carry out physical cleaning, improve antifouling property.
According to the filler 7 of the utility model embodiment, filler 7 is one or more in urethane filler, combined stuffing, elastic filler.Its form can be honeycomb sponge shape, spherical, sheet, strip; Preferably, adopt honeycomb sponge shape.Carrier material used can be can be organically also inorganic, and preferred, material therefor is polyurethane elastomer.
production instance 1
Certain sanitary sewage disposal project, treatment capacity 1000m 3/ d, former water COD cr200-500mg/L, ammonia nitrogen 40-50mg/L, SS 100-230mg/L.Adopt pulse energy saving formula MBR device of the present utility model processing, wherein membrane element 32 used is flat sheet membrane; Filler 7 is; Urethane filler, filler 7 be shaped as honeycomb sponge shape.
Water outlet COD after processing cr20-50mg/L, ammonia nitrogen <3mg/L, SS<1mg/L.Cleaning interval was promoted to 180 days by 120 days, cleaned cost 30%.
production instance 2
Certain industrial park waste water treatment and reuse project, treatment capacity is 500 m 3/ d, former water COD crbe 300 ~ 800mg/L, ammonia nitrogen is 40~90 mg/L, and SS is 250~400 mg/L.Adopt pulse energy saving formula MBR device of the present utility model processing, wherein membrane element 32 used is hollow-fibre membrane; Filler 7 is combined stuffing; Filler 7 be shaped as sheet.After processing, water outlet COD crbe less than 50mg/L, turbidity is less than 1NTU.This system operation one month, transmembrane pressure (TMP) rises to 6.3 kPa by 2.1kPa, and the poor rising of mould is steady, stable.
production instance 3
Certain Coal Chemical Industry industry wastewater treatment project, treatment capacity is 2000m3/d, the former water COD of intaking crbe 450 ~ 1000mg/L, ammonia nitrogen is 50~150mg/L, and SS is 120~260 mg/L.Adopt pulse energy saving formula MBR device of the present utility model processing, wherein membrane element 32 used is tubular membrane; Filler 7 is elastic filler; Filler 7 be shaped as strip.
After processing, produce water COD cr<50mg/L, ammonia nitrogen <5mg/L, SS<1mg/L.Cleaning interval was promoted to 98 days by 60 days.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.

Claims (5)

1. a pulse energy saving formula MBR device, comprise membrane cisterna, film group device, aeration tube and aerator, the water-in of described membrane cisterna is provided with intake pump, described film group device is arranged in membrane cisterna, described film group device comprises some membrane elements and header, described membrane element is located in described film group device at each interval, each membrane element is provided with water outlet, be used for collecting water purification, and the water outlet on each membrane element is all communicated with header by pipeline, the outlet of described header is connected with product water pump, it is characterized in that: described aeration tube is positioned at the below of film group device, the outlet of described aerator is connected with trip switch and aeration tube in turn, described trip switch can be according to water, air pressure balance automatic-control pulse aeration mode, in the time that the suffered normal atmosphere of trip switch is greater than suffered hydraulic pressure, trip switch is opened, gas enters aeration tube along pipeline, in the time that the suffered normal atmosphere of trip switch is less than or equal to suffered hydraulic pressure, trip switch cuts out, and is so concatenated to form pulse aeration.
2. a kind of pulse energy saving formula MBR device according to claim 1, is characterized in that: described membrane element is the one in flat sheet membrane, hollow-fibre membrane and tubular membrane.
3. a kind of pulse energy saving formula MBR device according to claim 1 and 2, is characterized in that: described membrane cisterna is filled with filler.
4. a kind of pulse energy saving formula MBR device according to claim 3, is characterized in that: described filler is one or more in urethane filler, combined stuffing, elastic filler.
5. a kind of pulse energy saving formula MBR device according to claim 4, is characterized in that: described filler be shaped as honeycomb sponge shape, spherical, sheet, strip.
CN201320887657.5U 2013-12-31 2013-12-31 Pulse energy-saving MBR (Membrane Biological Reactor) device Expired - Lifetime CN203700018U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103708606A (en) * 2013-12-31 2014-04-09 北京清大国华环保科技有限公司 Pulsed energy-saving MBR (membrane bioreactor) method and device
CN105293684A (en) * 2015-11-14 2016-02-03 常州大学 Novel modularized flat membrane module of immersed type membrane bioreactor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103708606A (en) * 2013-12-31 2014-04-09 北京清大国华环保科技有限公司 Pulsed energy-saving MBR (membrane bioreactor) method and device
CN105293684A (en) * 2015-11-14 2016-02-03 常州大学 Novel modularized flat membrane module of immersed type membrane bioreactor

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Address after: 100085 C building, Ka Wah building, No. 9, 3rd Street, Beijing, Haidian District, C404

Patentee after: GO HIGHER ENVIRONMENT CO.,LTD.

Address before: 100085 C building, Ka Wah building, No. 9, 3rd Street, Beijing, Haidian District, C404

Patentee before: BEIJING GOHIGHER ENVIRONMENTAL TECHNOLOGY CO.,LTD.

C41 Transfer of patent application or patent right or utility model
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Effective date of registration: 20160316

Address after: 102200, No. 2, building 7, 2237 Chuangxin Road, Changping District science and Technology Park, Beijing

Patentee after: BEIJING QINGDA GUOHUA FILM TECHNOLOGY CO.,LTD.

Address before: 100085 C building, Ka Wah building, No. 9, 3rd Street, Beijing, Haidian District, C404

Patentee before: GO HIGHER ENVIRONMENT CO.,LTD.

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Granted publication date: 20140709

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