CN2558647Y

CN2558647Y - Membrane bioreactor of membrane moving type

Info

Publication number: CN2558647Y
Application number: CN 02234903
Authority: CN
Inventors: 张建中
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-27
Filing date: 2002-05-27
Publication date: 2003-07-02
Anticipated expiration: 2012-05-27

Abstract

The utility model relates to a bioreactor used for the sewage treatment field, in particular to a membrane motion type membrane bioreactor. The utility model comprises an inlet, a chest box, a bracket, a pipeline, a membrane component, a sealing device and a driving device. The membrane component is connected with the driving device which drives the membrane component so as to ensure filtrating surface of the membrane component to rotate or shake in the treatment water; the movement of the membrane component enables the membrane surface be washed and difficult for micro-organism to attach and grow; since the gel layer on the membrane surface is in a state of continuous renewing, a thick gel layer can not be formed. The utility model has the beneficial effects of being easy to realize motion mode, having an adjustable washing force within permitting range of mechanical intensity of the membrane enabling the membrane flux to be in a favorable level, being capable of reducing membrane pollution and jam at utmost.

Description

The diafragm type membrane bioreactor

Technical field

The utility model relates to bio-reactor in the sewage treatment area, particularly relates to a kind of diafragm type membrane bioreactor.

Background technology

At present, bio-reactor kind used in sewage treatment area is a lot, mainly can be divided into two big classes, the one, anaerobic biological reactor, as contact anaerobic jar, anaerobic filter, upflow anaerobic sludge blanket process (comprising EGSB) etc., the one, aerobe reactor is as activated sludge process, contact oxidation method, biological fluidized bed etc.These all reactors all wish to reach this effect: guaranteeing as often as possible to increase sludge concentration (MLVSS) and activity, to improve the efficient of reactor under the isolating prerequisite of mud and water energy.For this reason, the technician has developed many methods, and membrane bioreactor is wherein a kind of.

Membrane bioreactor research starts from the U.S. of the sixties, it with film as device for separating mud and water, combine the advantage of film and bio-reactor, have the volumetric loading height, effluent quality is good and stablize, help denitrogenation, floor space few, save series of advantages such as initial cost.But in the present various types of films bio-reactor of developing, the pollution of film and obstruction are difficult problems always.The pollution of film and obstruction major cause are two, the one, and for microorganism grows in the film surface attachment, the one, the film surface forms gel coat.How to greatest extent decelerating membrane pollution and obstruction are the problems that the technician researchs and develops always.

Summary of the invention:

The purpose of this utility model is to improve the shortcoming of prior art, for the pollution that slows down film to greatest extent and obstruction and a kind of diafragm type membrane bioreactor is provided.

For achieving the above object, the utility model is taked following design: membrane module is connected with drive unit, and drive unit drive membrane assembly makes the membrane module filtering surface produce motion in processed water.

Because (size of this scouring force is relevant with the speed of relative movement between membrane module and the water, and its ultimate value is relevant with the physical strength of mould material) on the filtering surface of film washed away generation in the motion of membrane module in water.Because this existence of washing away, on the filtering surface of film, microorganism will be difficult to apposition growth, even if apposition growth is to some extent also easily washed away.Same this washes away strength will make the lip-deep gel coat of film be in a kind of state of continual renovation, be difficult to form thicker gel coat.Consequent effect is: film pollutes and stops up and will be slowed down, thereby reaches the purpose of this utility model.

The utility model beneficial effect is: mode of motion easily realizes, in the scope that the physical strength of film allows, washes away strength and can regulate easily, makes membrane flux remain on good horizontal.

Description of drawings:

Fig. 1 is the structural representation of the utility model embodiment

Fig. 2 is the utility model membrane module structure synoptic diagram

Fig. 3 is a tightness system synoptic diagram of the present utility model

Fig. 4 is embodiment 2 of the present utility model

Embodiment:

Embodiment 1 as shown in Figure 1, the diafragm type membrane bioreactor is made up of water inlet pipe 1, casing 2, support 4, pipeline 3, membrane module 6, tightness system 5, drive unit, as shown in Figure 2, membrane module 6 is made up of hollow-fibre membrane 22, pipeline 21,24,23, porosely on the hollow-fibre membrane 22 is covered with itself.Several hollow-fibre membranes 22 link to each other with pipeline 21,24, and pipeline 21,24 links to each other with pipeline 23.As shown in Figure 3, tightness system 5 is made up of rotating shaft 7, loam cake 30, housing 31, spring 32.Rotating shaft 7 is connected with membrane module 6, housing 31 is connected with pipeline 3, rotating shaft 7 belows have the internal diameter of protuberance and housing 31 to be complementary, and spring 32 is installed on the periphery, protuberance of loam cake 30 times and twisted rotary shaft 7, and spring 32 storage of potential energy make rotating shaft 7 and housing 31 be complementary and form sealing.Drive unit is made up of motor 10, belt pulley 9 travelling belts 8, and motor 10 and tightness system 5 are fixed on the support 4 of casing 2.Travelling belt 8 connects belt pulley 9 and rotating shaft 7, and motor 10 rotations drive rotating shaft 7 and membrane module 6 rotates.Water inlet pipe 1 is installed on the casing 2.Be full of pending sewage in the casing 2.Pending sewage becomes treating water through membrane module 6, tightness system 5 and pipeline 3 and flows into pond 11 through after carrying out a biological disposal upon.

Embodiment 2: as shown in Figure 4, the filtering surface of membrane module 6 produces the mode of motion for shaking in processed water, and drive unit is made up of spring 40, motor 10, eccentric wheel 45, excentric shaft 44, bearing pin 42 and union lever 43, supporting plate 41.Membrane module 6 and tightness system 5 are connected by flexible duct.Excentric shaft 44 is installed on the eccentric wheel 45, and bearing pin 42 is installed on the supporting plate 41, and union lever 43 connects excentric shaft 44 and bearing pin 42.Spring 40 connects supporting plate 41 and tightness system 5, and supporting plate 41 is fixing with membrane module 6.

Claims

1, a kind of by water inlet pipe, casing, support, pipeline, membrane module, tightness system, the diafragm type membrane bioreactor that drive unit is formed, it is characterized in that: membrane module is connected with drive unit, drive unit drive membrane assembly, make the membrane module filtering surface in processed water, produce motion, membrane module is by hollow-fibre membrane, pipeline is formed, porosely on the hollow-fibre membrane be covered with itself, hollow-fibre membrane links to each other with pipeline, tightness system is by rotating shaft, loam cake, housing, spring is formed, rotating shaft is connected with membrane module, housing and pipe connection, the rotating shaft below has the internal diameter of protuberance and housing to be complementary, spring is installed under the loam cake and the periphery of twisted rotary shaft, on the protuberance, the spring storage of potential energy makes rotating shaft and housing be complementary and forms sealing, drive unit is by motor, the belt pulley travelling belt is formed, and motor and tightness system are fixed on the support of casing.

2, diafragm type membrane bioreactor according to claim 1, it is characterized in that: drive unit is made up of spring, motor, eccentric wheel, excentric shaft, bearing pin and union lever, supporting plate, membrane module is connected by flexible duct with tightness system, excentric shaft is installed on the eccentric wheel, bearing pin is installed on the supporting plate, union lever connects excentric shaft and bearing pin, and spring connects supporting plate and tightness system, and supporting plate and membrane module are fixed.