CN102874920A - External component anaerobic membrane bioreactor and waste water purification process thereof - Google Patents

External component anaerobic membrane bioreactor and waste water purification process thereof Download PDF

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Publication number
CN102874920A
CN102874920A CN2012103857686A CN201210385768A CN102874920A CN 102874920 A CN102874920 A CN 102874920A CN 2012103857686 A CN2012103857686 A CN 2012103857686A CN 201210385768 A CN201210385768 A CN 201210385768A CN 102874920 A CN102874920 A CN 102874920A
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anaerobic
pipe type
membrane
pressure
waste water
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CN2012103857686A
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CN102874920B (en
Inventor
曹达文
张静晨
张洲
王小存
张东曙
夏洪超
曹先艳
唐继承
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SHANGHAI TONGJI ENVIRONMENT ENGINEERING TECHNOLOGY Co Ltd
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SHANGHAI TONGJI ENVIRONMENT ENGINEERING 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention provides an external component anaerobic membrane bioreactor and a waste water purification process thereof. The waste water purification process includes that a mixed liquid in an anaerobic tank is pumped into a ceramic internal pressure pipe type ultrafiltration membrane through a pump for a cross flow filtration, the mixed liquid contains anaerobic bacteria and diatomaceous earth, under the action of pressure difference, clear water is permeated outwards through the ceramic internal pressure pipe type ultrafiltration membrane and is led out, and a concentration mixed liquid reserved in the ceramic internal pressure pipe type ultrafiltration membrane is taken back to the anaerobic tank through a cross flow. Compared with anaerobic membrane bioreactors in prior art, the external component anaerobic membrane bioreactor has the advantages that during operating, a certain amount of the diatomaceous earth is added into the mixed liquid, consequently the scouring and washing effects on the inner wall of the ceramic internal pressure pipe type ultrafiltration membrane can be strengthened, deposition and pollution of impurities to the inner wall of the ceramic internal pressure pipe type ultrafiltration membrane can be effectively reduced, the permeation flux is stabilized, simultaneously the cross flow speed can be reduced, the energy consumption is lowered, the filtering period of the ceramic internal pressure pipe type ultrafiltration membrane is prolonged, and the chemical cleaning frequency is reduced.

Description

A kind of external placed type assembly anaerobic membrane bioreactor and process for purifying waste water thereof
Technical field
The present invention relates to field of waste water treatment, particularly a kind of external placed type assembly anaerobic membrane bioreactor and process for purifying waste water thereof.
Background technology
The anaerobe reaction is the common process in the sewage disposal, it has, and floor space is little, technique is simple, operation energy consumption is low, sludge yield is low, the advantages such as organic pollution materials of some difficult degradations of degradable, and the biogas that produces in the anaerobic process can be used as energy recycling, it is a kind for the treatment of technology that has the multiple advantage of environment and economy benefit concurrently, therefore, be widely used in field of waste water treatment, especially the wastewater treatment of higher concentration organic pollutant.
The external placed type anaerobic membrane bioreactor is a kind of in the present anaerobic membrane bioreactor.Specifically the anaerobic treatment water outlet is guided to outside the reaction tank, entered high speed cross flow filter in the film pipe by inner pressed, leach clear water and ooze out the film pipe, active sludge and concentrated solution are stayed in the film pipe, then are back in the reaction tank.The advantage of this technology is that processing flux is higher, facility compact.But, there is following defective:
In the process of cleaning the film pipe, need current continual rinsing for some time at a high speed, energy consumption is large, and, can only wash impurity large on the tube wall, and can't be cleaned at the medium and small impurity of fenestra, of long duration, can stop up fenestra, thereby affect filter effect and the filtration efficiency of film pipe, even affect the work-ing life of film pipe.
Summary of the invention
The object of the invention is to provide a kind of external placed type assembly anaerobic membrane bioreactor, to solve external placed type anaerobic membrane bioreactor of the prior art in the process of cleaning the film pipe, need current continual rinsing for some time at a high speed, energy consumption is large, and, can only wash impurity large on the tube wall, and the little impurity in fenestra can't be cleaned, and is of long duration, can stop up fenestra, thereby affect filter effect and the filtration efficiency of film pipe, even affect the technical matters in the work-ing life of film pipe.
Another object of the present invention is to provide a kind of process for purifying waste water of external placed type assembly anaerobic membrane bioreactor, to solve external placed type anaerobic membrane bioreactor of the prior art in the process of cleaning the film pipe, need current continual rinsing for some time at a high speed, energy consumption is large, and, can only wash impurity large on the tube wall, and the little impurity in fenestra can't be cleaned, of long duration, can stop up fenestra, thereby affect filter effect and the filtration efficiency of film pipe, even affect the technical matters in the work-ing life of film pipe.
The object of the invention is achieved through the following technical solutions:
A kind of process for purifying waste water of external placed type assembly anaerobic membrane bioreactor may further comprise the steps:
With the mixed solution in the anaerobic pond by be pumped into the pottery in pressure-pipe type ultra-filtration membrane cross flow filter, contain anerobe and diatomite in the described mixed solution, under the pressure difference effect, clear water sees through the interior pressure-pipe type ultra-filtration membrane of described pottery and is exported to exosmosis, and the concentrated mixed solution of staying in the interior pressure-pipe type ultra-filtration membrane of pottery is back to described anaerobic pond by the cross-flow band.
Preferably, diatomaceous content is 5g/L-20g/L in the described mixed solution.
Preferably, diatomaceous content is 10g/L in the described mixed solution.
Preferably, also comprise the step that pressure-pipe type ultra-filtration membrane in the described pottery is carried out back flushing, every operation is filtered after 20-60 minute back flushing once, and backwashing time is 30-60s.
A kind of external placed type assembly anaerobic membrane bioreactor, comprise anaerobic pond, diatomite throwing device and tubular membrane component, be provided with pressure-pipe type ultra-filtration membrane in some potteries in the described tubular membrane component, the water outlet of described anaerobic pond is connected with the water-in of pressure-pipe type ultra-filtration membrane in the described pottery, and the water outlet of described diatomite throwing device is connected with the water-in of pressure-pipe type ultra-filtration membrane in the described pottery.
Preferably, add diatomite by described diatomite throwing device, make that diatomaceous content is 5g/L-20g/L in the waste water.
Preferably, also comprise backwashing pump, described backwashing pump is connected with described tubular membrane component.
Preferably, be followed successively by from down to up inhalant region, packing area, exhalant region and collecting methane district in the described anaerobic pond, sidewall at inhalant region is provided with water-in, be provided with the water distributor with the sludge agitation function in the described inhalant region, described water outlet is located on the sidewall of exhalant region, and described collecting methane district is provided with venting port.
Compared with prior art, the present invention has following advantage:
External placed type assembly anaerobic membrane bioreactor of the present invention is when operation, owing in mixed solution, adding a certain amount of diatomite, can strengthen the washing away of inwall, cleanup action to pressure-pipe type ultra-filtration membrane in the pottery, can effectively reduce inwall deposition and the pollution of impurity pressure-pipe type ultra-filtration membrane in pottery, the steady seepage flux, the while can be reduced the flow velocity of cross-flow, saves energy consumption, and the filtration cycle of the interior pressure-pipe type ultra-filtration membrane of prolongation pottery, reduce the matting frequency.In addition, also can improve filter effect and the filtration efficiency of pressure-pipe type ultra-filtration membrane in the pottery, thereby prolong the work-ing life of pressure-pipe type ultra-filtration membrane in the pottery.
Description of drawings
Fig. 1 is the structural representation of external placed type assembly anaerobic membrane bioreactor of the present invention;
Fig. 2 is the schema of the process for purifying waste water of external placed type assembly anaerobic membrane bioreactor of the present invention.
Embodiment
Below in conjunction with accompanying drawing, describe the present invention in detail.
See also Fig. 1, external placed type assembly anaerobic membrane bioreactor of the present invention, comprise anaerobic pond 1, diatomite throwing device 2 and tubular membrane component, be provided with pressure-pipe type ultra-filtration membrane 4 in some potteries in the tubular membrane component, the water outlet of anaerobic pond 1 is connected with the water-in of pressure-pipe type ultra-filtration membrane 4 in the pottery, and the water outlet of diatomite throwing device 2 is connected with the water-in of pressure-pipe type ultra-filtration membrane 4 in the pottery.Wherein, be followed successively by from down to up inhalant region, packing area, exhalant region and collecting methane district in the anaerobic pond 1, be provided with water-in at the sidewall of inhalant region, be provided with the water distributor with the sludge agitation function in the inhalant region, water outlet is located on the sidewall of exhalant region, and the collecting methane district is provided with venting port.
Diatomite throwing device 2 is used for diatomite is joined the waste water before the pressure-pipe type ultrafiltration membrance filter in the pottery, makes that diatomaceous content is 5g/L-20g/L in the waste water, is preferably 10g/L.
External placed type assembly anaerobic membrane bioreactor of the present invention also comprises backwashing pump (not drawing among the figure), is used for pressure-pipe type ultra-filtration membrane in the pottery is carried out back flushing, and backwashing pump is connected with tubular membrane component.
See also Fig. 2, the present invention also provides a kind of process for purifying waste water of external placed type assembly anaerobic membrane bioreactor, and detailed step is as follows:
(1) pending waste water enters in the anaerobic pond 1, water distributor by inhalant region contacts with mud, then slowly pass through the packing area, adsorbed by anaerobic sludge and degrade at packing area waste water, produce biogas, afterwards, waste water enters exhalant region, the biogas that produces enters the collecting methane district, and the biogas in collecting methane district is derived from venting port and is collected into the biogas air collector by intake ducting;
(2) waste water in the exhalant region enters pressure-pipe type ultra-filtration membrane 4 in the pottery after fine fack filters, simultaneously, diatomite in the diatomite throwing device 2 also enters pressure-pipe type ultra-filtration membrane in the pottery, makes that diatomaceous content is 5g/L-20g/L in the waste water before filtering, and is preferably 10g/L;
(3) under the pressure difference effect, clear water sees through the interior pressure-pipe type ultra-filtration membrane of pottery and is exported to exosmosis, is collected in the clean water basin, and the concentrated mixed solution of staying in the interior pressure-pipe type ultra-filtration membrane of pottery is back to anaerobic pond by the cross-flow band;
(4) in pottery after the every operation of pressure-pipe type ultra-filtration membrane 20-60 minute (being preferably 30 minutes), the clear water in the clean water basin (or tap water) carries out the back flushing of 30-60s to pressure-pipe type ultra-filtration membrane in ceramic in backwashing pump 3 introducing tubular membrane groups; Clear water in the clean water basin also can supply water to subsequent treatment process.
External placed type assembly anaerobic membrane bioreactor of the present invention is when operation, owing in mixed solution, adding a certain amount of diatomite, can strengthen the washing away of inwall, cleanup action to pressure-pipe type ultra-filtration membrane in the pottery, can effectively reduce inwall deposition and the pollution of impurity pressure-pipe type ultra-filtration membrane in pottery, the steady seepage flux, the while can be reduced the flow velocity of cross-flow, saves energy consumption, and the filtration cycle of the interior pressure-pipe type ultra-filtration membrane of prolongation pottery, reduce the matting frequency.In addition, also can improve filter effect and the filtration efficiency of pressure-pipe type ultra-filtration membrane in the pottery, thereby prolong the work-ing life of pressure-pipe type ultra-filtration membrane in the pottery.
Above disclosed only be several specific embodiments of the application, but the application is not limited thereto, the changes that any person skilled in the art can think of all should drop in the application's the protection domain.

Claims (8)

1. the process for purifying waste water of an external placed type assembly anaerobic membrane bioreactor is characterized in that, may further comprise the steps:
With the mixed solution in the anaerobic pond by be pumped into the pottery in pressure-pipe type ultra-filtration membrane cross flow filter, contain anerobe and diatomite in the described mixed solution, under the pressure difference effect, clear water sees through the interior pressure-pipe type ultra-filtration membrane of described pottery and is exported to exosmosis, and the concentrated mixed solution of staying in the interior pressure-pipe type ultra-filtration membrane of pottery is back to described anaerobic pond by the cross-flow band.
2. the process for purifying waste water of a kind of external placed type assembly anaerobic membrane bioreactor as claimed in claim 1 is characterized in that, diatomaceous content is 5g/L-20g/L in the described mixed solution.
3. the process for purifying waste water of a kind of external placed type assembly anaerobic membrane bioreactor as claimed in claim 2 is characterized in that, diatomaceous content is 10g/L in the described mixed solution.
4. the process for purifying waste water of a kind of external placed type assembly anaerobic membrane bioreactor as claimed in claim 1, it is characterized in that, also comprise the step that pressure-pipe type ultra-filtration membrane in the described pottery is carried out back flushing, every operation is filtered after 20-60 minute back flushing once, and backwashing time is 30-60s.
5. external placed type assembly anaerobic membrane bioreactor, it is characterized in that, comprise anaerobic pond, diatomite throwing device and tubular membrane component, be provided with pressure-pipe type ultra-filtration membrane in some potteries in the described tubular membrane component, the water outlet of described anaerobic pond is connected with the water-in of pressure-pipe type ultra-filtration membrane in the described pottery, and the water outlet of described diatomite throwing device is connected with the water-in of pressure-pipe type ultra-filtration membrane in the described pottery.
6. a kind of external placed type assembly anaerobic membrane bioreactor as claimed in claim 5 is characterized in that, adds diatomite by described diatomite throwing device, makes that diatomaceous content is 5g/L-20g/L in the waste water.
7. a kind of external placed type assembly anaerobic membrane bioreactor as claimed in claim 5 is characterized in that, also comprise backwashing pump, described backwashing pump is connected with described tubular membrane component.
8. a kind of external placed type assembly anaerobic membrane bioreactor as claimed in claim 5, it is characterized in that, be followed successively by from down to up inhalant region, packing area, exhalant region and collecting methane district in the described anaerobic pond, sidewall at inhalant region is provided with water-in, be provided with the water distributor with the sludge agitation function in the described inhalant region, described water outlet is located on the sidewall of exhalant region, and described collecting methane district is provided with venting port.
CN201210385768.6A 2012-10-12 2012-10-12 External component anaerobic membrane bioreactor and waste water purification process thereof Active CN102874920B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105776654A (en) * 2014-12-26 2016-07-20 青岛海尔智能技术研发有限公司 Water purifying device and control method thereof
CN109906207A (en) * 2016-10-21 2019-06-18 阿奎泰克国际公司 The method for handling high-concentration waste water by anaerobic biological reactor
CN110563269A (en) * 2019-09-17 2019-12-13 上海济旦水科技有限公司 Sewage treatment device and method for treating sewage by using microalgae and producing microalgae by using sewage
CN111056632A (en) * 2019-12-17 2020-04-24 福建中盟环保科技有限公司 Anaerobic external tubular ultrafiltration membrane bioreactor

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CN101746848A (en) * 2008-12-12 2010-06-23 同济大学 Dynamic film separating method for processing sewage by using biological diatomite
CN102153251A (en) * 2011-05-11 2011-08-17 上海膜达克环保工程有限公司 External anaerobic membrane bioreactor and waste water purification technology thereof

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JPS51109286A (en) * 1975-03-22 1976-09-28 Hitachi Ltd
JPH04126528A (en) * 1990-09-17 1992-04-27 Ebara Infilco Co Ltd Method for cleaning hollow-fiber membrane filter device the same
CN101746848A (en) * 2008-12-12 2010-06-23 同济大学 Dynamic film separating method for processing sewage by using biological diatomite
CN102153251A (en) * 2011-05-11 2011-08-17 上海膜达克环保工程有限公司 External anaerobic membrane bioreactor and waste water purification technology thereof

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105776654A (en) * 2014-12-26 2016-07-20 青岛海尔智能技术研发有限公司 Water purifying device and control method thereof
CN109906207A (en) * 2016-10-21 2019-06-18 阿奎泰克国际公司 The method for handling high-concentration waste water by anaerobic biological reactor
CN110563269A (en) * 2019-09-17 2019-12-13 上海济旦水科技有限公司 Sewage treatment device and method for treating sewage by using microalgae and producing microalgae by using sewage
CN111056632A (en) * 2019-12-17 2020-04-24 福建中盟环保科技有限公司 Anaerobic external tubular ultrafiltration membrane bioreactor

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