Plate-frame immersed dynamic membrane bioreactor
A technology of bioreactor and biological reaction, applied in the direction of biological treatment devices, biological water/sewage treatment, water pollutants, etc., can solve the problem of affecting the effect of solid-liquid separation, the decrease of membrane flux, and the reduction of the continuous operation effect and stability of the system And other issues
Pending Publication Date: 2020-07-24
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology
[0003] The dynamic membrane thickness will be affected by the sludge concentration and running time. As the membrane thickness increases, the membrane flux will decrease and the membrane resistance will increase, which will affect the solid-liquid separation effect.
The existing technology cleans the dynamic film layer through off-line and online cleaning methods, but most of these methods completely strip the dynamic film layer, and the recovery of the treatment performance requires the dynamic film to be reattached, which greatly reduces the continuous operation effect and stability of the system
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[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0028] Such as Figure 1-5 Shown, a kind of plate and frame submerged dynamic membrane bioreactor described in the present invention, bioreaction area 1, solid-liquid separation area 2 and gas collection area 3; Described bioreaction area 1 comprises feed inlet 11, gas Circulation port 12, air circulation ports 13 on both sides, central columnar aeration zone 14, annular aeration zone 15 and air pump 16; the central columnar aeration zone 14 includes a microporous aerator 141; the circular aeration zone Zone 15 includes aeration carbon nanotubes 151 on both sides; the solid-liquid separation zone 2 includes membrane substrate 21, membrane support plate 22, double-layer gasket 23, membrane frame baffle 24, side baffle 25, and screw 26 , membrane support plate water outlet 27, reactor sludge outlet 28 and reactor water outlet 29; described membrane support pla...
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A plate-and-frame immersed dynamic membrane bioreactor comprises a biological reaction area, a solid-liquid separation area and a gas collection area, the biological reaction area comprises a middle columnar aeration area, annular aeration areas are arranged on the two sides of the middle columnar aeration area, and a feeding opening is formed in the top of the biological reaction area; a solid-liquid separation area is arranged in the middle columnar aeration area, the solid-liquid separation area comprises a membrane base material, the membrane base material is placed between a double-layergasket and a membrane frame baffle, the double-layer gasket is tightly attached to a membrane supporting plate, and the membrane frame baffle is fixed through screws; and a gas collecting area is arranged at the top of the reactor. By arranging the triple aeration areas, the air circulation intensity can be reasonably regulated and controlled; the shear force generated by circulating gas in the aeration area and the action of the side baffles can effectively control the thickness of the dynamic membrane and can reduce the membrane layer cleaning frequency; and the interception of microorganisms in the reactor can be increased, and the treatment efficiency of system microorganisms is improved.
Description
technical field [0001] The invention relates to the technical field of biological treatment and resource utilization of organic waste, in particular to a plate and frame submerged dynamic membrane bioreactor. Background technique [0002] The dynamic film is a layered film formed on the surface of the film substrate by pre-coating or sludge mixture. Compared with the traditional membrane filtration technology, the physical interception is mainly completed by the secondary membrane on the membrane substrate, which includes complex physicochemical and microbial effects. The formation of dynamic membrane is crucial to the effective operation of dynamic membrane bioreactor, which affects the treatment effect, sludge concentration and filtration resistance of dynamic membrane bioreactor. [0003] The dynamic membrane thickness will be affected by the sludge concentration and running time. As the membrane thickness increases, the membrane flux will decrease and the membrane resis...
Claims
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IPC IPC(8): C02F3/34B09B3/00C02F101/30
CPCC02F3/34B09B3/00C02F2101/30C02F2203/006C02F2303/14
Inventor 王晓昌邢保山曹思凡
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY