CN103496784A - Self-forming dynamic membrane bioreactor using aerobic granule sludge - Google Patents
Self-forming dynamic membrane bioreactor using aerobic granule sludge Download PDFInfo
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- CN103496784A CN103496784A CN201310496755.0A CN201310496755A CN103496784A CN 103496784 A CN103496784 A CN 103496784A CN 201310496755 A CN201310496755 A CN 201310496755A CN 103496784 A CN103496784 A CN 103496784A
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Abstract
The invention provides a self-forming dynamic membrane bioreactor using aerobic granule sludge. The self-forming dynamic membrane bioreactor is characterized in that the self-forming dynamic membrane bioreactor comprises a reactor, wherein the top of the reactor is connected with a water inlet tank through a measuring pump, two baffle plates are arranged in the reactor in parallel, a porous supporting plate is arranged in the lower position between the two baffle plates, one end of an aerator pipe is arranged between the two baffle plates, the other end of the aerator pipe is connected with a draught fan, a membrane assembly is arranged outside the two baffle plates, the membrane assembly is connected with a water outlet pipe, a sludge sedimentation basin is arranged at the bottom of the reactor, and an overflow pipe is arranged at the upper portion of the reactor. According to the self-forming dynamic membrane bioreactor, the defects in the prior art are overcome, the technology which combines the self-forming dynamic membrane bioreactor with the aerobic granule sludge is provided, the self-forming dynamic membrane bioreactor has the advantages of being easy to operate, capable of bearing high organic loads and good and stable in processing effect, and the pollution condition of a self-forming dynamic membrane is greatly reduced.
Description
Technical field
The present invention relates to a kind of self-forming dynamic membrane bioreactor that uses aerobic particle mud, belong to technical field of sewage.
Background technology
At present, aerobic particle mud (Aerobic Granular Sludge, AGS) be the particulate state active sludge that microorganism forms by self-cohesion action under specific envrionment conditions, the microorganism wherein comprised is common species, and they are because the physiological effect of interdepending has formed a kind of closely knit structure of stablizing.As everyone knows, in sewage disposal, aerobic biological treatment process is general more than the Anaerobic treatment technique application, but the research of aerobic particle mud is obviously lagged behind to anaerobic grain sludge.The Optimality of anaerobic grain sludge has caused the investigator to cultivate the interest of granule sludge under aerobic condition, and people are to be based upon on the basis of anaerobic grain sludge to the research of aerobic particle mud.
At Mishima in 1991 and Nakamure at aerobic upflow sludge blanket (AUSB, Aerobic Upflow Sludge Blanket) find first to there is good sedimentation function, the particle diameter aerobic particle mud between 2～8mm in, just caused global extensive concern.
Aerobic particle mud has following features than traditional floc sludge and anaerobic grain sludge:
(1) aerobic particle mud has good settling property, and water outlet does not need to arrange settling tank, has greatly reduced construction investment and the cost for the treatment of facility.
(2) aerobic particle mud particle physical strength is high, is difficult for causing because the reasons such as flow shear and inner aerogenesis are broken sludge loss.
(3) structure of aerobic particle mud is closely knit, the contained biomass of unit volume mud is large, not only can protect the bacterium (as nitrifier) comparatively responsive to environment, its impact by toxic substance is weakened, stronger impact load can also be tolerated, thereby system processing efficiency and stability can be improved;
(4) the aerobic particle mud start-up period is shorter than anaerobic grain sludge, can cultivate at normal temperatures simultaneously;
(5) aerobic particle mud is compared anaerobic grain sludge when processing low-concentration organic waste water (as city domestic sewage) greater advantage, and when processing high concentrated organic wastewater the higher subsequent disposal that do not need of clearance:
(6) aerobic particle mud has stronger denitrogenation dephosphorizing ability.There is multiple oxygen environment in relation due to mass transfer in aerobic particle mud simultaneously, for microorganism of different nature provides suitable separately living environment.Therefore can realize individually or simultaneously denitrogenation dephosphorizing.
Membrane bioreactor (Membrane Bio-Reactor, MBR) is the Novel state Sewage treatment systems that membrane separation technique and biologic treating technique organically combine.It replaces the second pond of traditional biological treatment technology end with membrane module, keep higher sludge concentration in bio-reactor, improves the organic loading of biological treatment, thereby reduces the floor space of sewage treatment facility.It mainly utilizes the membrane separation plant of being immersed within the aerobe pond to hold back active sludge and larger molecular organics.Membrane bioreactor, because of its effective crown_interception, can retain longer microorganism of generation cycle, can realize deep purification of waste water.
Membrane bioreactor is comprised of membrane module and bio-reactor two portions, according to this two-part combination, divides, and can be divided into external placed type and the large class of immersion two.External membrane bioreactor refers to that the mixed solution of bio-reactor enters membrane module after the pump supercharging, and the liquid under the effect of pressure in mixed solution sees through film, becomes system and processes water; Solid and macromolecular substance etc. tunicle are held back, and with concentrated solution, are back in bio-reactor.The submerged membrane bio-reactor refers to membrane module is placed in reactor, by vacuum pump or the suction of other type of pump, obtains filtered liquid.
Membrane bioreactor is compared with the traditional biological treatment technology, and following principal feature is arranged: processing efficiency is high, effluent quality good, facility compact, little, the easy realization of floor space are controlled automatically, operational management is simple.Make MBR really apply, the most important thing is to overcome film and pollute, increase membrane flux, extend membrane lifetime.
Bioreactor of dynamic membrane is the novel process that traditional MBR technology combines with membrane technique, to put forward on the basis of MBR, difference according to the formation principle of Dynamic Membrane, be divided into bioreactor of dynamic membrane " self-forming dynamic membrane bioreactor " and " precoated dynamic membrane bio-reactor ".Precoated dynamic membrane usually first filters with porous supporting body the solution that contains filmogen, until Dynamic Membrane, after its surface forms, then filters processed solution with it.Self-forming dynamic membrane is that the material in solution forms on the porous supporting body surface when filtering processed solution.The filmogen of self-forming dynamic membrane is active sludge, and the filmogen of precoated dynamic membrane is MnO
2, the material such as active carbon powder.The film base material of Dynamic Membrane is generally industrial filter cloth, nylon bolting silk, non-woven fabrics, Stainless Steel Cloth, pottery, sintered glass, sintering metal etc.
Bioreactor of dynamic membrane is that the cheap microgrid material of selection substitutes micro-filtration or the ultra-filtration membrane mould material is processed into filter assemblies and sets up bio-reactor, with traditional MBR, compare, bioreactor of dynamic membrane, except the major advantage with traditional MBR, also has the advantage of the following aspects:
(1) capital construction and maintenance cost are low: the price of microgrid material is well below expensive ultrafiltration, microfiltration membrane material;
(2) membrane flux is large: Dynamic Membrane adopts the microgrid material of larger aperture, and the basement membrane resistance is little.
(3) working cost is low: the filtration resistance of microgrid material is little, need under the effect of pump, not draw water, and relies under the waterhead that reactor is less the water outlet of just can flowing automatically, and energy consumption is low;
(4) film pollutes and to be easier to remove: Dynamic Membrane is easier to separate from the mould material surface, during cleaning together with adsorbed pollution substance and microbial metabolites together by wash-out, make membrane flux effectively be recovered.
However, bioreactor of dynamic membrane still exists and denounces, and film pollutes.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of easy to operate, can bear high organic loading, treatment effect is good and stable, and has greatly reduced the self-forming dynamic membrane bioreactor of use aerobic particle mud of the pollution of self-forming dynamic membrane.
In order to solve the problems of the technologies described above, technical scheme of the present invention is to provide a kind of self-forming dynamic membrane bioreactor that uses aerobic particle mud, it is characterized in that: comprise reactor, reactor head is connected with inlet chest by volume pump, two parallel being located in reactor of traverse baffle, between two traverse baffles, bottom is provided with the porous supporting plate; Aeration tube one end is located between two traverse baffles, and the aeration tube the other end is connected with blower fan; Two traverse baffle outsides are provided with membrane module, and membrane module is connected with rising pipe; Reactor bottom is provided with mudpan, and reactor top is provided with upflow tube.
Preferably, the pipeline that described reactor is connected with volume pump is provided with valve.
Preferably, the described aeration tube the other end is provided with gas meter with the pipeline that described blower fan is connected.
Preferably, the pipeline that described membrane module is connected with rising pipe is provided with fluid level controller.
Preferably, described mudpan bottom connects shore pipe.
Preferably, described membrane module is self-forming dynamic membrane.
The self-forming dynamic membrane bioreactor of use aerobic particle mud provided by the invention, whole reactor is divided into to three compartments, in three compartments in reactor, middle compartment has been oxygen condition, microorganism is realized the degraded to most of pollutent therein, only has a small amount of suspension microorganism in the compartment of both sides, has therefore also greatly alleviated the pollution to film, the souring to the film surface can be realized by internal recycle simultaneously, the pollution of film can also be alleviated.And, due to aeration not in the compartment of both sides, be lower dissolved oxygen state, the alternating state of low dissolved axygen and high-solubility oxygen in reactor, be conducive to the removal of pollutent; Under the environment aerobic, that anaerobism alternately changes, the observed yield coefficient of microorganism reduces simultaneously, thereby can reach the purpose that reduces sludge yield.
Device provided by the invention has overcome the deficiencies in the prior art, combine self-forming dynamic membrane bioreactor and Aerobic Granular Sludge Technology, have easy to operate, can bear high organic loading, characteristics that treatment effect is good and stable, and greatly reduced the pollution situation of self-forming dynamic membrane.
The accompanying drawing explanation
The self-forming dynamic membrane bioreactor schematic diagram that Fig. 1 is use aerobic particle mud provided by the invention;
Fig. 2 is A-A sectional view in Fig. 1;
Fig. 3 is B-B sectional view in Fig. 1.
Embodiment
For the present invention is become apparent, hereby with a preferred embodiment, and coordinate accompanying drawing to be described in detail below.
The self-forming dynamic membrane bioreactor schematic diagram that Fig. 1 is use aerobic particle mud provided by the invention, the self-forming dynamic membrane bioreactor of described use aerobic particle mud comprises reactor, in conjunction with Fig. 2 and Fig. 3, reactor head is connected with inlet chest 1 by volume pump 2, on the pipeline that reactor is connected with volume pump 2, valve 3 also is housed.Two parallel being located in reactor of traverse baffle 8, be divided into three compartments by whole reactor.Between two traverse baffles 8, bottom is provided with porous supporting plate 9.Aeration tube 5 one ends are located between two traverse baffles 8, and the other end is connected with blower fan 7.On the pipeline that aeration tube 5 the other ends are connected with blower fan 7, gas meter 6 also is housed.Two traverse baffle 8 outsides are provided with membrane module 10, and membrane module 10 is connected with rising pipe 12 by fluid level controller 4.Reactor bottom is provided with mudpan 11, and mudpan 11 bottoms connect shore pipe 13.Reactor top is provided with upflow tube 14.
The self-forming dynamic membrane bioreactor of use aerobic particle mud provided by the invention, whole device is the integral type reactor, comprises water inlet system, outlet system, Controlling System, aerating system and membrane module.After waste water enters this reactor, first pass through the biological treatment of aerobic particle mud, realize the degraded to most of pollutent in waste water, finally by self-forming dynamic membrane, hold back the materials such as suspended substance in water outlet and colloid.
Two traverse baffles are set in reactor, whole reactor is divided into to three compartments, in intermediate compartment, aerating system is set, oxygen is provided by blower fan, aeration effect by intermediate compartment provides dissolved oxygen, and the power that forms internal recycle in whole reactor also is provided.Can realize the automatic control to the blower fan air demand by the interlock of dissolved oxygen concentration in system and blower motor frequency transformer or pipe valve aperture, for intermediate compartment provides dissolved oxygen.Control liquid level in self-forming dynamic membrane bioreactor not higher than traverse baffle by fluid level control device, the lifting force that utilizes aerating system to form is realized the circulation of whole inside reactor.
Put into membrane module in the compartment on both sides, aerating system is not set, realize the souring on film surface is polluted to alleviate film by internal recycle.Intermediate compartment bottom arranges the porous supporting plate, and for the support aerobic particle mud, aerobic particle mud is realized its stability by the washing away of air, screening effect.Aerobic particle mud exists only in intermediate compartment, and aerobic particle mud can make whole reactor keep higher sludge concentration.Reactor bottom arranges mudpan, and the inertia mud screened enters mudpan by the effect of internal recycle, can keep the activity of whole system by regular spoil disposal.
In three compartments in reactor, middle compartment has been oxygen condition, microorganism is realized the degraded to most of pollutent therein, only has a small amount of suspension microorganism in the compartment of both sides, therefore also greatly alleviated the pollution to film, the souring to the film surface can be realized by internal recycle simultaneously, the pollution of film can also be alleviated.And due to aeration not in the compartment of both sides, for lower dissolved oxygen state, the alternating state of low dissolved axygen and high-solubility oxygen in reactor, be conducive to the removal of pollutent: simultaneously under the environment aerobic, that anaerobism alternately changes, the observed yield coefficient of microorganism reduces, thereby can reach the purpose that reduces sludge yield.Membrane module in reactor is self-forming dynamic membrane, and membrane module is dismountable, and film base material is non-woven fabrics but is not limited only to non-woven fabrics; Self-generative dynamic membrane component effluent adopting flow by gravity water outlet (but being not limited only to the run by gravity water outlet), can reduce energy consumption, saves power.The small and dense collection in porous supporting plate hole in reactor, can guarantee passing through of water, can guarantee that again aerobic particle mud does not fall into settling tank.
During the operation of this device, water inlet is promoted and is entered reactor by volume pump, and membrane module adopts the flow by gravity water outlet, and controls the cleaning frequency to film by the variation of reactor liquid level.
Below with certain printing and dyeing mill's use-case, verify the result of use of the self-forming dynamic membrane bioreactor of use aerobic particle mud provided by the invention.
The alkali decrement dyeing waste water that certain printing and dyeing mill produces, after anaerobism flap flow reactor (ABR) is processed, still contains a large amount of gelatinoids and suspended substance in water outlet, chemical oxygen demand (COD) is still higher,, concrete water quality is as table, 1.
The water-quality guideline of table 1 alkali decrement dyeing waste water after anaerobism ABR processes
Alkali decrement dyeing waste water after preposition anaerobism flap flow reactor (ABR) is processed is promoted in the intermediate compartment of reactor from inlet chest 1 by volume pump 2.Regulate the flooding velocity of volume pump 2, hydraulic detention time is remained on to the 24h left and right; Regulate aerating system intensity by gas meter 6, the dissolved oxygen in the maintenance reactor is at 2.0～2.5mg/L; Aerobic particle mud is placed on porous supporting plate 9, keeps the interior about 5000mg/L of sludge concentration of reactor and by fluid level controller 4, the liquid level in whole reactor is controlled to traverse baffle below 8.Under the acting in conjunction of aeration tube 5, blower fan 7 and traverse baffle 8, forming internal recycling in whole reactor flows, alkali decrement dyeing waste water alternately realizes that under the effect of internal recycle an aerobic anaerobism one is aerobic, microorganism in aerobic particle mud and the microorganism of all kinds of suspensions utilize pollution substance (being mainly TA) in alkali decrement dyeing waste water as self metabolic nutritive substance, thereby reach the purifying treatment effect to sewage.
, in operational process, the aerobic particle mud that part is tiny and suspension microorganism be absorption deposition on membrane module 10 gradually, forms Dynamic Membrane.Alkali decrement dyeing waste water by being immersed in self-generative dynamic membrane component 10 water outlets in reactor, is trapped in most of colloidalmaterial and suspended substance in reactor after microbiological treatment, and the water after filtration goes out by flow by gravity from rising pipe 12.
When the liquid level in reaction can't be controlled by fluid level controller 4 (liquid level in reactor is higher than traverse baffle 8), think severe contamination of self-forming dynamic membrane, a cycle of operation end of reactor.Contaminated membrane module 10 will take out from reactor, by modes such as physics, chemistry, be cleaned rear recycling.Aerobic particle mud through air wash away, the inertia mud of screening and separating enters mudpan 11 through the effect of internal recycle, and discharges by shore pipe 13 after a cycle of operation of aerobic particle mud self-forming dynamic membrane bioreactor finishes.
Water quality through the alkali decrement dyeing waste water after preposition anaerobism flap flow reactor (ABR) is processed after the aerobic particle mud self-forming dynamic membrane bioreactor is processed is as table 2:
Table 2 aerobic particle mud self-forming dynamic membrane bioreactor effluent quality index
The present invention adopts aerobic particle mud and self-forming dynamic membrane bioreactor process integration to process waste water, the film that denounces that can alleviate on the one hand conventional membrane bioreactor pollutes, can make on the other hand aerobic particle mud keep stable form in reactor, can by the internal recycle of whole reactor, make aerobic particle mud, to sewage, good treatment effect be arranged again.
The self-forming dynamic membrane bioreactor of aerobic particle mud, with traditional self-forming dynamic membrane bioreactor, compare, utilized that the aerobic particle mud settleability is good, strong shock resistance, integrated the characteristics such as microorganism of different nature, with the self-forming dynamic membrane bioreactor coupling, have easy to operate, can bear high organic loading, treatment effect is good and the characteristics such as stable, and has reduced greatly the pollution situation of self-forming dynamic membrane.
Capacity of resisting impact load of the present invention is strong, treatment effect is stable good, can be used for processing sanitary sewage, high slat-containing wastewater and high concentrated organic wastewater etc., particularly in the processing of dyeing waste water, has good advantage; It is simple to operate simultaneously, and the cycle of operation is long, and running cost is low, can reduce the enterprise operation cost, realizes the Sustainable development of enterprise, and good application prospect is arranged.
Claims (6)
1. a self-forming dynamic membrane bioreactor that uses aerobic particle mud, it is characterized in that: comprise reactor, reactor head is connected with inlet chest (1) by volume pump (2), two traverse baffles (8) are parallel to be located in reactor, and between two traverse baffles (8), bottom is provided with porous supporting plate (9); Aeration tube (5) one ends are located between two traverse baffles (8), and aeration tube (5) the other end is connected with blower fan (7); Two traverse baffles (8) outside is provided with membrane module (10), and membrane module (10) is connected with rising pipe (12); Reactor bottom is provided with mudpan (11), and reactor top is provided with upflow tube (14).
2. a kind of self-forming dynamic membrane bioreactor that uses aerobic particle mud as claimed in claim 1, it is characterized in that: the pipeline that described reactor is connected with volume pump (2) is provided with valve (3).
3. a kind of self-forming dynamic membrane bioreactor that uses aerobic particle mud as claimed in claim 1, it is characterized in that: the pipeline that described aeration tube (5) the other end is connected with described blower fan (7) is provided with gas meter (6).
4. a kind of self-forming dynamic membrane bioreactor that uses aerobic particle mud as claimed in claim 1, it is characterized in that: the pipeline that described membrane module (10) is connected with rising pipe (12) is provided with fluid level controller (4).
5. a kind of self-forming dynamic membrane bioreactor that uses aerobic particle mud as claimed in claim 1, is characterized in that: described mudpan (11) bottom connection shore pipe (13).
6. a kind of self-forming dynamic membrane bioreactor that uses aerobic particle mud as described as claim 1 or 4, it is characterized in that: described membrane module (10) is self-forming dynamic membrane.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104276653A (en) * | 2014-08-27 | 2015-01-14 | 浙江竟成环保科技有限公司 | Method for treating sewage by virtue of high-interception membrane bioreactor |
| CN104386775A (en) * | 2014-10-27 | 2015-03-04 | 安徽农业大学 | Adsorption reactor with separated internal recycle combined membranes, and water treatment device |
| CN105854372A (en) * | 2015-01-22 | 2016-08-17 | 上海城市污染控制工程研究中心有限公司 | Multi-format multifunctional flat micronet element used for separating impurity |
| CN108117161A (en) * | 2017-12-20 | 2018-06-05 | 厦门大学 | Regulate and control method using the anaerobic-aerobic dynamic fouling membrane of immobilization quorum sensing |
| CN111892167A (en) * | 2020-08-27 | 2020-11-06 | 贵州工业职业技术学院 | Method for manufacturing self-generated dynamic membrane bioreactor |
| CN112174436A (en) * | 2020-09-30 | 2021-01-05 | 重庆工商大学 | Method for stably operating bacteria-algae symbiotic aerobic granular sludge membrane bioreactor |
| CN114772850A (en) * | 2022-04-22 | 2022-07-22 | 北京华宇辉煌生态环保科技股份有限公司 | Self-generated dynamic membrane solid-liquid separator and use method thereof |
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Cited By (9)
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| CN104276653A (en) * | 2014-08-27 | 2015-01-14 | 浙江竟成环保科技有限公司 | Method for treating sewage by virtue of high-interception membrane bioreactor |
| CN104386775A (en) * | 2014-10-27 | 2015-03-04 | 安徽农业大学 | Adsorption reactor with separated internal recycle combined membranes, and water treatment device |
| CN104386775B (en) * | 2014-10-27 | 2016-04-13 | 安徽农业大学 | Adsorptive reactor, the water treatment device of internal recycle associating membrane sepn |
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| CN108117161B (en) * | 2017-12-20 | 2020-12-08 | 厦门大学 | Anaerobic-aerobic dynamic membrane pollution regulation and control method utilizing immobilized quorum sensing |
| CN111892167A (en) * | 2020-08-27 | 2020-11-06 | 贵州工业职业技术学院 | Method for manufacturing self-generated dynamic membrane bioreactor |
| CN112174436A (en) * | 2020-09-30 | 2021-01-05 | 重庆工商大学 | Method for stably operating bacteria-algae symbiotic aerobic granular sludge membrane bioreactor |
| CN114772850A (en) * | 2022-04-22 | 2022-07-22 | 北京华宇辉煌生态环保科技股份有限公司 | Self-generated dynamic membrane solid-liquid separator and use method thereof |
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