CN103496784B - A kind of self-forming dynamic membrane bioreactor using aerobic particle mud - Google Patents
A kind of self-forming dynamic membrane bioreactor using aerobic particle mud Download PDFInfo
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- CN103496784B CN103496784B CN201310496755.0A CN201310496755A CN103496784B CN 103496784 B CN103496784 B CN 103496784B CN 201310496755 A CN201310496755 A CN 201310496755A CN 103496784 B CN103496784 B CN 103496784B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention provides a kind of self-forming dynamic membrane bioreactor using aerobic particle mud, it is characterized in that: comprise reactor, reactor head is connected with inlet chest by volume pump, and two pieces of traverse baffles are parallel to be located in reactor, and between two pieces of traverse baffles, bottom is provided with porous supporting plate; Aeration tube one end is located between two pieces of traverse baffles, and the aeration tube the other end is connected with blower fan; Be provided with membrane module outside two pieces of traverse baffles, membrane module is connected with rising pipe; Reactor bottom is provided with mudpan, and reactor top is provided with upflow tube.Device provided by the invention overcomes the deficiencies in the prior art, combine self-forming dynamic membrane bioreactor and Aerobic Granular Sludge Technology, have easy to operate, the good and stable feature of high organic loading, treatment effect can be born, and considerably reduce the pollution situation of self-forming dynamic membrane.
Description
Technical field
The present invention relates to a kind of self-forming dynamic membrane bioreactor using aerobic particle mud, belong to technical field of sewage.
Background technology
At present, aerobic particle mud (Aerobic Granular Sludge, AGS) be that microorganism is under certain environmental conditions by granulated activated mud that self-cohesion action is formed, the microorganism wherein comprised is common species, and they constitute due to the physiological effect of interdepending a kind ofly stablizes closely knit structure.As everyone knows, in sewage disposal, aerobic biological treatment process is general more than Anaerobic treatment technique application, but obviously lags behind anaerobic grain sludge to the research of aerobic particle mud.The Optimality of anaerobic grain sludge has caused investigator to the interest of cultivating granule sludge under aerobic condition, the research of people to aerobic particle mud be based upon anaerobic grain sludge basis on.
At Mishima and Nakamure in 1991 at aerobic upflow sludge blanket (AUSB, AerobicUpflow Sludge Blanket) in Late Cambrian there is good sedimentation function, the particle diameter aerobic particle mud between 2 ~ 8mm, just cause global extensive concern.
Aerobic particle mud has following features compared to 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, greatly reduces construction investment and the cost for the treatment of facility.
(2) aerobic particle mud particle physical strength is high, not easily causes sludge loss because the reason such as flow shear and inner aerogenesis is broken.
(3) structure of aerobic particle mud is closely knit, biomass contained by unit volume mud is large, not only can protect the bacterium (as nitrifier) comparatively responsive to environment, it is made to be weakened by the impact of toxic substance, stronger impact load can also be tolerated, thus system processing efficiency and stability can be improved;
(4) aerobic particle mud startup period ratio anaerobic grain sludge is short, can cultivate at normal temperatures simultaneously;
(5) aerobic particle mud is compared anaerobic grain sludge have greater advantage when being processed low-concentration organic waste water (as city domestic sewage), and when processing high concentrated organic wastewater, clearance is higher does not need subsequent disposal:
(6) aerobic particle mud has stronger denitrogenation dephosphorizing ability.Because the relation of mass transfer exists multiple oxygen environment simultaneously in aerobic particle mud, for microorganism of different nature provides living environment suitable separately.Therefore denitrogenation dephosphorizing can be realized individually or simultaneously.
The Novel state Sewage treatment systems that membrane bioreactor (Membrane Bio-Reactor, MBR) organically combines for membrane separation technique and biologic treating technique.It replaces the second pond of traditional biological treatment technology end with membrane module, keeps higher sludge concentration in bio-reactor, improves the organic loading of biological treatment, thus reduces the floor space of sewage treatment facility.It mainly utilizes the membrane separation plant be immersed within aerobe pond to retain active sludge and larger molecular organics.Membrane bioreactor, because of its effective crown_interception, can retain generation cycle longer microorganism, can realize deep purification of waste water.
Membrane bioreactor is made up of membrane module and bio-reactor two portions, divides according to this two-part combination, 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 pump supercharging, the penetration by liquid film under the effect of the pressure in mixed solution, becomes system process water; Solid and macromolecular substance etc. then tunicle retain, and are back in bio-reactor with concentrated solution.Nets impregnated refers to membrane module to be placed in reactor, by vacuum pump or the suction of other type of pump, obtains filtered liquid.
Membrane bioreactor, compared with traditional biological treatment technology, has following principal feature: processing efficiency is high, effluent quality good, little, the easy realization of facility compact, floor space controls automatically, operational management is simple.MBR is really applied, the most important thing is to overcome fouling membrane, increase membrane flux, extend membrane lifetime.
Bioreactor of dynamic membrane is the novel process that traditional MBR technology combines with membrane technique, put forward on the basis of MBR, according to the difference of the formation basic theory of Dynamic Membrane, bioreactor of dynamic membrane is divided into " self-forming dynamic membrane bioreactor " and " precoated dynamic membrane bio-reactor ".Precoated dynamic membrane first filters the solution containing filmogen with porous supporting body usually, until Dynamic Membrane after its surface is formed, then filters processed solution with it.Self-forming dynamic membrane is then formed in open support surface by the material in solution 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 microgrid material of selection cheapness carrys out alternative micro-filtration or ultra-filtration membrane mould material is processed into filter assemblies and sets up bio-reactor, compared with traditional MBR, bioreactor of dynamic membrane, except having the major advantage of traditional MBR, also has the advantage of the following aspects:
(1) capital construction and maintenance cost low: the price of microgrid material is well below the ultrafiltration of costliness, microfiltration membrane material;
(2) membrane flux is large: Dynamic Membrane adopts the microgrid material of larger aperture, and basement membrane resistance is little.
(3) working cost is low: the filtration resistance of microgrid material is little, does not need to draw water under the effect of pump, water outlet of just can flowing automatically under relying on the less waterhead of reactor, and energy consumption is low;
(4) fouling membrane is easier to remove: Dynamic Membrane is easier to be separated from mould material surface, during cleaning together with adsorbed pollution substance and microbial metabolites together by wash-out, membrane flux is effectively recovered.
However, bioreactor of dynamic membrane still exists and denounces, i.e. fouling membrane.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of easy to operate, high organic loading can be born, treatment effect is good and stablize, and considerably reduces the self-forming dynamic membrane bioreactor of the 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 using aerobic particle mud, it is characterized in that: comprise reactor, reactor head is connected with inlet chest by volume pump, two pieces of traverse baffles are parallel to be located in reactor, and between two pieces of traverse baffles, bottom is provided with porous supporting plate; Aeration tube one end is located between two pieces of traverse baffles, and the aeration tube the other end is connected with blower fan; Be provided with membrane module outside two pieces of traverse baffles, 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 pipeline that the described aeration tube the other end is connected with described blower fan is provided with gas meter.
Preferably, the pipeline that described membrane module is connected with rising pipe is provided with fluid level controller.
Preferably, shore pipe is connected bottom described mudpan.
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 three compartments, in three compartments in reactor, middle compartment as well oxygen condition, microorganism realizes the degraded to most of pollutent wherein, only has a small amount of suspension microorganism in the compartment of both sides, therefore also significantly reduces the pollution to film, the souring to film surface can be realized by internal recycle simultaneously, the pollution of film can also be alleviated.And due to not aeration in the compartment of both sides, be lower dissolved oxygen state, the alternating state of low dissolved axygen and high-solubility oxygen in reactor, is conducive to the removal of pollutent; Simultaneously under aerobic, anaerobism replace the environment changed, the observed yield coefficient of microorganism reduces, thus can reach the object reducing sludge yield.
Device provided by the invention overcomes the deficiencies in the prior art, combine self-forming dynamic membrane bioreactor and Aerobic Granular Sludge Technology, have easy to operate, the good and stable feature of high organic loading, treatment effect can be born, and considerably reduce the pollution situation of self-forming dynamic membrane.
Accompanying drawing explanation
Fig. 1 is the self-forming dynamic membrane bioreactor schematic diagram of 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 making the present invention become apparent, hereby with a preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Fig. 1 is the self-forming dynamic membrane bioreactor schematic diagram of use aerobic particle mud provided by the invention, the self-forming dynamic membrane bioreactor of described use aerobic particle mud comprises reactor, composition graphs 2 and Fig. 3, reactor head is connected with inlet chest 1 by volume pump 2, and the pipeline that reactor is connected with volume pump 2 is also equipped with valve 3.Two pieces of traverse baffles 8 are parallel to be located in reactor, whole reactor is divided into three compartments.Between two pieces of traverse baffles 8, bottom is provided with porous supporting plate 9.Aeration tube 5 one end is located between two pieces of traverse baffles 8, and the other end is connected with blower fan 7.The pipeline that aeration tube 5 the other end is connected with blower fan 7 is also equipped with gas meter 6.Be provided with membrane module 10 outside two pieces of traverse baffles 8, membrane module 10 is connected with rising pipe 12 by fluid level controller 4.Reactor bottom is provided with mudpan 11, connects shore pipe 13 bottom mudpan 11.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 integral type reactor, comprises water inlet system, outlet system, Controlling System, aerating system and membrane module.After waste water enters this reactor, first through the biological treatment of aerobic particle mud, realize the degraded to pollutent most of in waste water, retain the material such as suspended substance and colloid in water outlet finally by self-forming dynamic membrane.
Two pieces of traverse baffles are set in reactor, whole reactor is divided into three compartments, arrange aerating system in intermediate compartment, oxygen is provided by blower fan, namely provide dissolved oxygen by the aeration effect of intermediate compartment, also provide the power forming internal recycle in whole reactor.The automatic control that can realize 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.By the liquid level in fluid level control device control self-forming dynamic membrane bioreactor not higher than traverse baffle, the lifting force utilizing aerating system to be formed realizes the circulation of whole inside reactor.
Put into membrane module in the compartment on both sides, aerating system is not set, realized the souring on film surface to alleviate fouling membrane by internal recycle.Arrange porous supporting plate bottom intermediate compartment, for support aerobic particle mud, aerobic particle mud realizes its stability by the washing away of air, screening effect.Aerobic particle mud exists only in intermediate compartment, the sludge concentration that aerobic particle mud can make whole reactor keep higher.Reactor bottom arranges mudpan, and the inertia mud screened enters mudpan by the effect of internal recycle, can be kept the activity of whole system by regular spoil disposal.
In three compartments in reactor, middle compartment as well oxygen condition, microorganism realizes the degraded to most of pollutent wherein, a small amount of suspension microorganism is only had in the compartment of both sides, therefore the pollution to film is also significantly reduced, the souring to film surface can be realized by internal recycle simultaneously, the pollution of film can also be alleviated.And due to not aeration 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 aerobic, anaerobism replace the environment changed, the observed yield coefficient of microorganism reduces, thus can reach the object reducing 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 water outlet adopts flow by gravity water outlet (but being not limited only to run by gravity water outlet), can reduce energy consumption, saves power.The small and dense collection in porous supporting plate hole in reactor, can ensure passing through of water, can ensure that again aerobic particle mud does not fall into settling tank.
During this plant running, intaking to be promoted by volume pump enters reactor, and membrane module adopts flow by gravity water outlet, and controls the cleaning frequency to film by the change of reactor liquid level.
The result of use of the self-forming dynamic membrane bioreactor of use aerobic particle mud provided by the invention is verified below with certain printing and dyeing mill's use-case.
The alkali-minimization dyeing wastewater that certain printing and dyeing mill produces is after anaerobism flap flow reactor (ABR) process, and still containing a large amount of gelatinoids and suspended substance in water outlet, chemical oxygen demand (COD) is still higher, concrete water quality as table, 1.
The water-quality guideline of table 1 alkali-minimization dyeing wastewater after anaerobism ABR process
Alkali-minimization dyeing wastewater after preposition anaerobism flap flow reactor (ABR) process 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 about 24h; Regulate aerating system intensity by gas meter 6, the dissolved oxygen in maintenance reactor is at 2.0 ~ 2.5mg/L; Aerobic particle mud is placed on porous supporting plate 9, keep sludge concentration in reactor to be about 5000mg/L and by fluid level controller 4 by the Liquid level in whole reactor at traverse baffle less than 8.Under the acting in conjunction of aeration tube 5, blower fan 7 and traverse baffle 8, internal recycling flowing is formed in whole reactor, it is aerobic that alkali-minimization dyeing wastewater alternately realizes an aerobic anaerobism one under the effect of internal recycle, the microorganism of the microorganism in aerobic particle mud and all kinds of suspension utilizes the pollution substance in alkali-minimization dyeing wastewater (mainly TA) as self metabolic nutritive substance, thus reaches 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, formative dynamics film.Alkali-minimization dyeing wastewater is by being immersed in self-generative dynamic membrane component 10 water outlet in reactor after microbiological treatment, and be trapped in reactor by most of colloidalmaterial and suspended substance, the water after filtration is gone out by flow by gravity from rising pipe 12.
When the liquid level in reacting cannot be controlled by fluid level controller 4 (liquid level in reactor is higher than traverse baffle 8), namely think self-forming dynamic membrane severe contamination, a cycle of operation of reactor terminates.Contaminated membrane module 10 will take out from reactor, be undertaken cleaning rear recycling by the mode such as physics, chemistry.Aerobic particle mud washes away through air, the inertia mud of screening and separating enters mudpan 11 through the effect of internal recycle, and is discharged by shore pipe 13 after a cycle of operation of aerobic particle mud self-forming dynamic membrane bioreactor terminates.
The water quality of alkali-minimization dyeing wastewater after preposition anaerobism flap flow reactor (ABR) process after the process of aerobic particle mud self-forming dynamic membrane bioreactor 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 fouling membrane that denounces of conventional membrane bioreactor can be alleviated on the one hand, the form that aerobic particle mud can be made in reactor to keep stable on the other hand, the internal recycle again by whole reactor makes aerobic particle mud have good treatment effect to sewage.
The self-forming dynamic membrane bioreactor of aerobic particle mud, compared with traditional self-forming dynamic membrane bioreactor, make use of that aerobic particle mud settleability is good, strong shock resistance, integrate the features such as microorganism of different nature, with self-forming dynamic membrane bioreactor coupling, have easy to operate, the good and feature such as stable of high organic loading, treatment effect can be born, and greatly reduce 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 process sanitary sewage, high slat-containing wastewater and high concentrated organic wastewater etc., in the process of dyeing waste water, particularly has good advantage; It is simple to operate simultaneously, and the cycle of operation is long, and running cost is low, can reduce enterprise operation cost, realizes the Sustainable development of enterprise, has good application prospect.
Claims (5)
1. one kind uses the self-forming dynamic membrane bioreactor of aerobic particle mud, it is characterized in that: comprise reactor, reactor head is connected with inlet chest (1) by volume pump (2), two pieces of traverse baffles (8) are parallel to be located in reactor, whole reactor is divided into three compartments, intermediate compartment bottom between two pieces of traverse baffles (8) is provided with porous supporting plate (9), for support aerobic particle mud; Aeration tube (5) one end is located between two pieces of traverse baffles (8), and aeration tube (5) the other end is connected with blower fan (7); Two pieces of traverse baffle (8) outsides are 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);
Described membrane module (10) is self-forming dynamic membrane.
2. a kind of self-forming dynamic membrane bioreactor using aerobic particle mud as claimed in claim 1, 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 using aerobic particle mud as claimed in claim 1, 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 using aerobic particle mud as claimed in claim 1, 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 using aerobic particle mud as claimed in claim 1, is characterized in that: described mudpan (11) bottom connects shore pipe (13).
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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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JPS55149690A (en) * | 1979-05-11 | 1980-11-21 | Japan Organo Co Ltd | Clarifying and purifying method of water disposed by organic membrane type activated sludge |
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