CN1800052A - Integral membrane biological reaction device for water treatment - Google Patents
Integral membrane biological reaction device for water treatment Download PDFInfo
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- CN1800052A CN1800052A CNA2006100232818A CN200610023281A CN1800052A CN 1800052 A CN1800052 A CN 1800052A CN A2006100232818 A CNA2006100232818 A CN A2006100232818A CN 200610023281 A CN200610023281 A CN 200610023281A CN 1800052 A CN1800052 A CN 1800052A
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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
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- Activated Sludge Processes (AREA)
Abstract
The invention relates to a integral film biological reaction water-handling device. It includes a composition reaction pool made up of anoxic zone and aerobic zone, stirrer 3 set in the anoxic zone 2, circulating active sludge water-handling equipment made up of aeration tube 6 set in the aerobic zone 4 and air pump 12 connected to air intake tube 11, water intake pump 16 connected to water intake tube 17 in anoxic zone, water outlet pump 10 connected to water outlet tube 7 in aerobic zone, and reflux pump 15 connected to sludge return tube set from aerobic zone 4 to anoxic zone 2, a film component 5 set inside said aerobic zone 4, said water outlet 7 connected to the intake of said water-outlet pump 10 through the water outlet of said film component 5.
Description
Technical field
The present invention relates to a kind ofly, belong to field of environment engineering technology circulating active sludge system process and the membrane filtration technique formula membrane biological reaction water treatment equipment that is combined into one.
Background technology
Membrane separation technique is considered to one of the most rising high-tech in mid-term 20 end of the centurys to 21 century, and biological treatment traditional in membrane separation technique and the sewage disposal is combined, and has just constituted membrane bioreactor (MembraneBioreactor is called for short MBR).Because it is simple to have the operation operation, sludge yield is low, floor space is little, can effectively remove ammonia nitrogen, Industrial Wastewater Treatment to difficult degradation is also very effective, also can be used for characteristics such as reuse water processing, membrane bioreactor has been widely used in every field, by the processing that expands to sanitary sewage and many trade effluents to water treatment.
The sixties, the U.S. at first was used for MBR wastewater treatment research, the later stage seventies 20th century, extensive aerobic membrane bioreactor begins to use in the North America, be that the eighties in 20th century is in early days in Japan (same period South Africa: anaerobic membrane bioreactor) then successively, the mid-90, the latter stage nineties was in China in Europe.
(the Cyclic Activated Sludge System of circulating active sludge system, being CASS) technology is the novel process of developing on the basis of SBR technology and oxidation Ditch Technology, be a kind of have a denitrogenation dephosphorizing function one put formula gap active sludge treatment process with preface filling of criticizing that aeration one non-aeration mode moves, in a reactor, finish the biological degradation of organic pollutant and the processing capacity of mud-water separation.By regular hour sequence operation, its operational process comprises that water-filling-aeration, water-filling-mud-water separation, supernatant liquor are strained and three phases such as removes cyclic activated sludge system in the plug-flow mode.This three phases is formed a cycle of operation, the circular flow continuously of each cycle.
In recent years, because people are more and more higher to the requirement of quality of water environment, traditional biological treatment water outlet is difficult to satisfy more and more stricter sewage drainage standard, and membrane bioreactor demonstrates the incomparable superiority of many traditional technologys among the processing of sanitary sewage and trade effluent.But also expose the some shortcomings part simultaneously.The particularly pollution problem of film causes membrane flux to descend, even causes film can't continue to use, and badly influences its widespread use in practice.In addition, at present owing to reasons such as manufacturing process, starting material, the cost that film is made is higher, and the life-span is shorter, so the investment of MBR and working cost height also become one of subject matter that MBR runs in applying.
Along with the widespread use and the film improvement of Manufacturing Technology of membrane bioreactor, the investment cost of MBR can reduce significantly, can predict thus, and membrane bioreactor does more and more to have economy, technical competitive edge.And the array configuration of increasing different biological treatment and film separation unit can appear from now on.Membrane bioreactor has demonstrated more and more stronger application trend.Cyclic activated sludge system and membrane filtration technique are combined into integrated device processing sanitary sewage, carry out Study on reuse, the domestic relevant report that yet there are no.And the technology that film and sequence bioreactor the are combined to form low a kind of membrane bioreactor that is operation energy consumption, and the membrane sepn process can not influence microbic activity, and good prospects for application is arranged.
Membrane bioreactor is divided three classes: film biotinylated biomolecule reactor; Film aeration and biological reactor; The spe membrane bio-reactor.Used membrane bioreactor major part is a film-separation biological reactor in the sewage disposal.Film-separation biological reactor can be divided into separated type and integral type film biological reactor according to the modes of emplacement of membrane module.Integral type film biological reactor is meant membrane module is placed in bio-reactor inside that concrete device is seen Fig. 1.There is aerating apparatus reactor below, and the air that air compressor machine is sent here forms the microbubble of come-up, in aeration, makes the film surface produce a shear-stress again, is beneficial to film surface scrubbing, sees through in that the negative pressure of suction pump is dirty to go out membrane module.Be characterized in not using recycle pump, can avoid microorganism to be subjected to shearing force and inactivation and can save the pipeline configuration of circulation usefulness, working cost is low.For fingerprinting stress more weak microbial cells or the less situation of reacting weight, adopt integral type comparatively favourable.But be to use integral type film biological reactor, membrane flux is relatively low, film easily takes place pollute, and causes membrane flux to descend, even causes film can't continue to use, and badly influences its widespread use in practice.In addition, at present owing to reasons such as manufacturing process, starting material, the one-tenth end that film is made is higher, and the longevity is shorter, so the investment of MBR and working cost height also become one of subject matter that MBR runs in applying.
Circulating type active sludge technology (cyclic activated sludge system) is a kind of new form of sequencing batch active sludge technology.Usually the CASS reaction tank divides three reaction zones: biological selector, oxygen-starved area and aerobic zone, volumetric ratio were generally 1: 5: 30.Water exhaust system is the important content of CASS treatment process design, also is most characteristic and be related to system operation key of success part in its design.And the hydrophone of straining in the actual engineering often is difficult to reach design requirements, and the suspended substance of water outlet is more, and turbidity is higher, and effluent quality is difficult to guarantee.The water outlet of common CASS equipment also is not enough to reach reuse standard.
Summary of the invention
The object of the present invention is to provide a kind of integral membrane biological reaction device for water treatment, the equipment cycle of operation is long, and the film pollution level greatly reduces, and can keep higher membrane flux, guarantees that the equipment effluent characteristics meets " miscellaneous domestic water quality standard ".
In order to achieve the above object, design of the present invention is: the present invention is certain about the applications well prospect of membrane bioreactor, on the basis of the multiple membrane module performance of research, circulating active sludge system process (cyclic activated sludge system) and membrane filtration technique are combined into integral type film biological reactor, and are applied to sewage treatment area.Integrated film biological reaction device for water treatment in this patent is at the shortcoming of common MBR and the existence of CASS equipment, adopt the water exhaust system of hollow-fibre membrane system as integration apparatus, guaranteed that the equipment water outlet can meet " miscellaneous domestic water quality standard " (CJ25.1-89), and unique drainage pattern and aeration mode make that the cycle of operation of equipment is long, the degree that film pollutes significantly reduces, and can keep higher membrane flux.The present invention is used for sewage disposal with the film bio-filter technology, be based on the circulating active sludge method in the design, it is combined with membrane module, adopted integral type in form, be positioned over the integral membrane biological reaction device for water treatment that forms in the CASS reaction tank thereby be about to membrane module.
According to the foregoing invention design, the present invention adopts following technical proposals:
A kind of integral membrane biological reaction device for water treatment, comprise one by the reaction tank that is divided into oxygen-starved area and aerobic zone, be arranged on the agitator in the oxygen-starved area, insert the aeration tube of aerobic zone and the pneumatic pump on the connection inlet pipe thereof, intake pump on the water inlet pipe of oxygen-starved area, go out water pump on the aerobic zone rising pipe, and the circulating type active sludge water treatment device of the formation of the reflux pump on from aerobic zone to the oxygen-starved area mud return line, it is characterized in that being provided with in the described aerobic zone membrane module, described rising pipe is communicated to the described import that goes out water pump from the water outlet of membrane module.
Above-mentioned membrane module is the polyvinylidene difluoride (PVDF) hollow fiber film assembly.
The structure of above-mentioned polyvinylidene difluoride (PVDF) hollow fiber film assembly is: two parallel pipes are connected the two ends of polyvinylidene difluoride (PVDF) hollow fiber membrane bundle respectively, and described then two parallel pipe two ends are communicated with and connect the rising pipe of described aerobic zone.
Above-mentioned aeration tube is the pipe of uniform little perforation on 1～2 root canal wall, its end closure and head end is connected described inlet pipe, and described aeration tube is tiled in the bottom of reaction tank aerobic zone.
Above-mentioned pneumatic pump, water inlet pipe, the electric motor that goes out water pump, reflux pump and agitator all are connected to an automatic control box,---draining intake simultaneously aeration---the water inlet aeration of by their opening of automatic control box control, realizing the water inlet aeration ... two step cycle operation scheme.
The present invention compared with prior art, have following conspicuous outstanding substantive distinguishing features and remarkable advantage: the present invention is provided with membrane module in the reaction tank aerobic zone in the circulating type active sludge water treatment device, its water outlet is played " second pond " effect, guarantee effluent quality, and aeration tube is settled in the bottom of the aerobic zone below membrane module, the film pollution level is greatly reduced, keep membrane flux, the equipment cycle of operation is long.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural representation of the polyvinylidene difluoride (PVDF) hollow fiber film assembly among Fig. 1.
Embodiment
A preferred embodiment of the present invention is: referring to Fig. 1, Fig. 2 and Fig. 3, this integral membrane biological reaction device for water treatment includes one by the reaction tank 1 that is divided into oxygen-starved area 2 and aerobic zone 4, be arranged on the agitator 3 in the oxygen-starved area 2, insert the aeration tube 6 of aerobic zone 4 and the pneumatic pump 12 on the connection inlet pipe 11 thereof, intake pump 16 on 2 water inlet pipes 17 of oxygen-starved area, go out water pump 10 on aerobic zone 4 rising pipes 7, and the circulating type active sludge water treatment device that the reflux pump on 2 mud return lines 14 15 constitutes from aerobic zone 4 to the oxygen-starved area, a membrane module 5 is set in the described aerobic zone 4, and described rising pipe 7 is communicated to the described import that goes out water pump 10 from the water outlet of membrane module 5.Also have a vacuum pressure gauge 8 on the above-mentioned rising pipe 7, also have an air flowmeter 9 on the above-mentioned inlet pipe 11, reaction tank 1 go to the bottom a blow-down pipe and on blow-off valve 13.Described membrane module 5 is the polyvinylidene difluoride (PVDF) hollow fiber film assembly.The structure of this membrane module is: two parallel pipes 18 are connected the two ends of polyvinylidene difluoride (PVDF) hollow fiber membrane bundle 19 respectively, and described then two parallel pipe 18 two ends are communicated with and connect the rising pipe 7 of described aerobic zone 4.Described aeration tube 6 is pipes of uniform little perforation on 2 root canal walls, its end closure and head end is connected described inlet pipe 11, and described aeration tube is tiled in the bottom of the aerobic zone 4 of reaction tank 1.Above-mentioned pneumatic pump 12, water inlet pipe 16, the electric motor that goes out water pump 10, reflux pump 15 and agitator 13 all are connected to an automatic control box,---draining intake simultaneously aeration---the water inlet aeration of by their opening of automatic control box control, realizing the water inlet aeration ... two step cycle operation scheme.
During the present embodiment operation, fetching active sludge from Quyang Sewage Plant tames, be active sludge certain growth and breeding condition is provided, during the sludge acclimatization membrane module is taken out, be immersed in the clear water, domestication through certain hour finishes, and polysulfone hollow fiber ultrafiltration membrane system is put into device (it is following to be placed on lowest water level), device beginning commencement of commercial operation.
Waste water is squeezed into the oxygen-starved area of CASS reaction tank front end by volume pump, aeration not, flooding quantity is judged by hydraulic detention time (HRT), waste water carries out denitrification to be handled in this district, the organism amount is tentatively descended, waste water flows into main reaction region (aerobic zone) afterwards, carry out nitrated and organic matter degradation in this district, aeration rate in the aerobic zone determines that by spinner-type flowmeter the purpose of aeration is of paramount importance to be for microbial growth provides oxygen, is exactly by stirring in addition, active sludge is fully contacted with waste water, decelerating membrane pollution passes through the membrane module water outlet through the sewage of carrying out a biological disposal upon simultaneously, and membrane module has played the effect of second pond.The mud of main reaction region is back to the oxygen-starved area by sludge reflux pump, and to guarantee denitrifying sludge quantity, spoil disposal adopts manual spoil disposal, and the spoil disposal time calculates according to sludge age SRT.
Operation by for some time, the optimised process operational conditions of having determined device is hydraulic detention time HRT=4h, dissolved oxygen DO remains between 2.0～3.5mg/L, temperature changes near being controlled at normal temperature, pH is between 6.5～8.0, and experimental installation is as follows to the pollutant removal of real life sewage under these processing condition:
(1) water inlet COD
CrBetween 215～689mg/L, change water outlet COD
CrBe lower than 50mg/L always, about 30mg/L, change basically.Clearance remains on more than 85% always.
(2) influent ammonium concentration changes between 13～41mg/L, and ammonia nitrogen removal frank is stable after one week of commencement of commercial operation.The water outlet ammonia nitrogen is lower than 5mg/L always, and minimum have only 0.3mg/L.Maximum material removal rate reaches 97.69%.
When (3) influent turbidity changed between 86.7 and 278, the turbidity of water outlet did not have wide variation, all was lower than 1.0 basically, and turbidity removal rate is stabilized in more than 99%, was better than " miscellaneous domestic water quality standard " (CJ25.1-89).
(4) Jin Shui pH value changes between 7.0～7.5, and the pH of water outlet is stabilized in about 7.2 always; Do not detect SS in the water outlet.
The result shows the COD of water outlet
CrAll be better than " miscellaneous domestic water quality standard " (CJ25.1-89) with ammonia nitrogen, turbidity, pH etc., and can't check SS in the water outlet.But water outlet after sterilization direct reuse in flush the toilet, city miscellaneous waters such as road-cleaning, fire-fighting, afforestation, carwash, building operation.Novel integrated membrane bioreactor is described---when circulating active sludge system process+polyvinylidene difluoride (PVDF) (PVDF) tubular fibre membrane filtration process is used for the processing of real life sewage, good treatment effect is arranged.
Claims (5)
1. integral membrane biological reaction device for water treatment, comprise one by the reaction tank (1) that is divided into oxygen-starved area (2) and aerobic zone (4), be arranged on the agitator (3) in the oxygen-starved area (2), insert the aeration tube (6) of aerobic zone (4) and the pneumatic pump (12) on the connection inlet pipe (11) thereof, intake pump (16) on oxygen-starved area (2) water inlet pipe (17), go out water pump (10) on aerobic zone (4) rising pipe (7), and the circulating type active sludge water treatment device of the formation of the reflux pump (15) on from aerobic zone (4) to oxygen-starved area (2) mud return line (14), it is characterized in that being provided with in the described aerobic zone (4) membrane module (5), described rising pipe (7) is communicated to the described import that goes out water pump (10) from the water outlet of membrane module (5).
2. integral membrane biological reaction device for water treatment according to claim 1 is characterized in that described membrane module (5) is the polyvinylidene difluoride (PVDF) hollow fiber film assembly.
3. integral membrane biological reaction device for water treatment according to claim 2, the structure that it is characterized in that described polyvinylidene difluoride (PVDF) hollow fiber film assembly is: two parallel pipes (18) are connected the two ends of polyvinylidene difluoride (PVDF) hollow fiber membrane bundle (19) respectively, and described then two parallel pipes (18) two ends are communicated with and connect the rising pipe (7) of described aerobic zone (4).
4. integral membrane biological reaction device for water treatment according to claim 1, it is characterized in that described aeration tube (6) is the pipe of uniform little perforation on 1～2 root canal wall, its end closure and head end is connected described inlet pipe (11), described aeration tube is tiled in the bottom of reaction tank (1) aerobic zone (4).
5. integral membrane biological reaction device for water treatment according to claim 1, it is characterized in that described pneumatic pump (12), water inlet pipe (16), go out water pump (10), the electric motor of reflux pump (15) and agitator (13) all is connected to an automatic control box,---draining intake simultaneously aeration---the water inlet aeration of by their opening of automatic control box control, realizing the water inlet aeration ... two step cycle operation scheme.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863590A (en) * | 2010-06-17 | 2010-10-20 | 同济大学 | Combined anoxic/aerobic enhanced biological activated carbon dynamic membrane nitrogen and phosphorus removal process |
| CN102491521A (en) * | 2011-12-30 | 2012-06-13 | 哈尔滨工业大学 | Integrated sewage treatment device of membrane bioreactor and sewage treatment method |
| CN101205110B (en) * | 2006-12-21 | 2012-06-20 | 株式会社日立制作所 | Sewage water treatment device and method thereof |
| CN101734793B (en) * | 2008-11-27 | 2012-10-10 | 陈光浩 | Sewage treatment system and sewage treatment method |
| CN103408127A (en) * | 2008-05-20 | 2013-11-27 | 北京汉青天朗水处理科技有限公司 | Sewage treatment device |
| CN103523925A (en) * | 2013-11-04 | 2014-01-22 | 哈尔滨工业大学深圳研究生院 | Plant-activated sludge combined wastewater treatment device free of stink release |
| CN103723884A (en) * | 2013-12-04 | 2014-04-16 | 刘军亮 | Sewage treatment method of degrading COD, BOD, SS, and ammonia nitrogen |
| CN103787497A (en) * | 2012-10-29 | 2014-05-14 | 浦华环保有限公司 | Sewage treatment system and application thereof |
| CN103908904A (en) * | 2012-12-31 | 2014-07-09 | 格兰富控股联合股份公司 | Flat-type membrane filtration element and manufacturing method thereof, flat-type membrane filtration assembly and membrane bioreactor |
| CN106477722A (en) * | 2016-12-21 | 2017-03-08 | 河海大学 | A kind of combined film bioreactor and application thereof |
| CN108911121A (en) * | 2018-07-24 | 2018-11-30 | 哈尔滨工程大学 | A kind of device and method of modification nonwoven cloth and Cyclic Activated Sludge System Combined Treatment vessel sewage |
| CN111499089A (en) * | 2020-03-23 | 2020-08-07 | 北京德源通环保科技有限公司 | Large-scale integrated sewage treatment tank |
| CN111620440A (en) * | 2020-05-22 | 2020-09-04 | 浙江双益环保科技发展有限公司 | Method and equipment for treating low-carbon-nitrogen-ratio domestic sewage by using improved CASS-MBR process |
| CN113072179A (en) * | 2021-03-12 | 2021-07-06 | 中山大学 | Sewage nitrogen and phosphorus removal device and method thereof |
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| CN2308595Y (en) * | 1997-10-10 | 1999-02-24 | 清华大学 | Sucking built-in film biological reactor |
| ES2190895B2 (en) * | 2002-02-01 | 2004-05-16 | Universida De Santiago De Compostela | HYBRID BIOLOGICAL REACTOR OF MEMBRANES FOR TREATMENT OF INDUSTRIAL AND URBAN RESIDUAL WATERS. |
| TW593166B (en) * | 2003-07-28 | 2004-06-21 | Ind Tech Res Inst | Apparatus for reduction of biological wasted sludge |
| US6946073B2 (en) * | 2003-09-02 | 2005-09-20 | Ch2M Hill, Inc. | Method for treating wastewater in a membrane bioreactor to produce a low phosphorus effluent |
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2006
- 2006-01-12 CN CNB2006100232818A patent/CN100357197C/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101205110B (en) * | 2006-12-21 | 2012-06-20 | 株式会社日立制作所 | Sewage water treatment device and method thereof |
| CN103408127A (en) * | 2008-05-20 | 2013-11-27 | 北京汉青天朗水处理科技有限公司 | Sewage treatment device |
| CN101734793B (en) * | 2008-11-27 | 2012-10-10 | 陈光浩 | Sewage treatment system and sewage treatment method |
| CN101863590B (en) * | 2010-06-17 | 2011-11-16 | 同济大学 | Combined anoxic/aerobic enhanced biological activated carbon dynamic membrane nitrogen and phosphorus removal process |
| CN101863590A (en) * | 2010-06-17 | 2010-10-20 | 同济大学 | Combined anoxic/aerobic enhanced biological activated carbon dynamic membrane nitrogen and phosphorus removal process |
| CN102491521A (en) * | 2011-12-30 | 2012-06-13 | 哈尔滨工业大学 | Integrated sewage treatment device of membrane bioreactor and sewage treatment method |
| CN102491521B (en) * | 2011-12-30 | 2013-03-13 | 哈尔滨工业大学 | Integrated sewage treatment device of membrane bioreactor and sewage treatment method |
| CN103787497A (en) * | 2012-10-29 | 2014-05-14 | 浦华环保有限公司 | Sewage treatment system and application thereof |
| CN103787497B (en) * | 2012-10-29 | 2015-09-16 | 浦华环保有限公司 | A kind of Sewage treatment systems and application thereof |
| CN103908904B (en) * | 2012-12-31 | 2016-02-10 | 格兰富控股联合股份公司 | Flat film filtering element and manufacture method, flat membrane filtration module and membrane bioreactor |
| CN103908904A (en) * | 2012-12-31 | 2014-07-09 | 格兰富控股联合股份公司 | Flat-type membrane filtration element and manufacturing method thereof, flat-type membrane filtration assembly and membrane bioreactor |
| CN103523925A (en) * | 2013-11-04 | 2014-01-22 | 哈尔滨工业大学深圳研究生院 | Plant-activated sludge combined wastewater treatment device free of stink release |
| CN103723884A (en) * | 2013-12-04 | 2014-04-16 | 刘军亮 | Sewage treatment method of degrading COD, BOD, SS, and ammonia nitrogen |
| CN103723884B (en) * | 2013-12-04 | 2016-04-27 | 刘军亮 | The sewage water treatment method of a kind of COD that degrades, BOD, SS, ammonia nitrogen |
| CN106477722A (en) * | 2016-12-21 | 2017-03-08 | 河海大学 | A kind of combined film bioreactor and application thereof |
| CN108911121A (en) * | 2018-07-24 | 2018-11-30 | 哈尔滨工程大学 | A kind of device and method of modification nonwoven cloth and Cyclic Activated Sludge System Combined Treatment vessel sewage |
| CN111499089A (en) * | 2020-03-23 | 2020-08-07 | 北京德源通环保科技有限公司 | Large-scale integrated sewage treatment tank |
| CN111620440A (en) * | 2020-05-22 | 2020-09-04 | 浙江双益环保科技发展有限公司 | Method and equipment for treating low-carbon-nitrogen-ratio domestic sewage by using improved CASS-MBR process |
| CN113072179A (en) * | 2021-03-12 | 2021-07-06 | 中山大学 | Sewage nitrogen and phosphorus removal device and method thereof |
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