Biochemistry solid-liquid separation and purification integrated device of sewage moving bed

Abstract

The invention provides a biochemistry solid-liquid separation and purification integrated device of a sewage moving bed. The device comprises a tank of a sewage treatment device, outer partition wallsof the tank and an inner partition wall arranged in the tank, wherein the tank is divided by the inner partition wall into a biochemistry reaction area on one side and a water purification and separation area on the other side; the upper part of the outer partition wall on the water inlet side of the biochemistry reaction area is provided with a water inlet and a water inlet pipe connected with the water inlet, a water inlet overflowing weir groove is formed in the inner wall of the tank at the side of the water inlet, and the water inlet overflowing weir groove is located above the biochemistry reaction area; in the biochemistry reaction area, two vertical guiding boards are symmetrically arranged in the positions corresponding to the outer partition wall on the water inlet side and theinner partition wall on the water outlet side, and the guiding boards divide the biochemistry reaction area into a backflow channel area on the water inlet side, a middle aeration area and a backflowchannel area on the water outlet side. The device is compact in structure, and biochemistry reaction and a muddy water separation and purification process are gathered and completed in an integrated structure, so that the device has the significant advantages that occupied land is small, investment is saved, the running cost is low, and the treatment effect is good.

Description

technical field [0001] The invention relates to the field of a sewage treatment method and technical device, and more specifically relates to a sewage moving bed biochemical and solid-liquid separation and purification integrated device. Background technique [0002] The moving bed biofilm reactor (MBBR) process absorbs the advantages of the traditional fluidized bed and biological contact oxidation processes. The core is to directly add a certain proportion of suspended fillers with a specific gravity close to water into the reactor, as microorganisms. The active carrier can greatly increase the biomass and biological species in the reactor, thus greatly improving the efficiency of sewage treatment. [0003] As a process that combines the activated sludge method of suspended growth and the biofilm method of attached growth, the current MBBR reactor has the advantages of both, and has the outstanding advantages of simple operation, small footprint, and high treatment efficie...

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Problems solved by technology

[0006] But at present, it is difficult to do it in most of the actual engineering design. Therefore, in the actual engineering, it exists to varying degrees. Balanced, prone to the defects of local filler accumulation; or blindly increase the aeration volume in order to overcome these defects, resulting in excessive aeration energy consumption

[0007] 2. Due to the special hydraulic characteristic requirements of MBBR reactor, it is difficult to realize large-scale

[0008] 3. The possible disadvantages of the large-scale MBBR reactor

However, the backflow of fillers will greatly increase the energy consumption of the system. At the same time, the fillers collide with each other in the pipeline, which will cause a large amount of anaerobic and anoxic biofilms to fall off on the fillers and affect the treatment effect of the system; Filling blockage is prone to occur. In addition, the underwater agitators arranged in random places are prone to hydraulic dead angles, which also lead to a large amount of fillers accumulating in the dead water area.

Otherwise, it is necessary to set up a high-power agitator to stir, and the stirring intensity is too high, firstly, it will cause excessive energy consumption, and secondly, it will cause the wear of the suspended filler and the difficulty of attaching the biofilm on the filler

[0009] 4. The outlet of the MBBR reactor is equipped with grids and grids to intercept suspended fillers, which are prone to blockage

[0010] 5. The suspended matter in the effluent water of MBBR reactor is so small that it is difficult to settle, separate and purify

The suspended filler in the MBBR reactor is scoured and collided with the gas-liquid flow, and the aging biofilm can be shed and renewed in time, which improves the efficiency of biochemical treatment of sewage; but at the same time, there are tiny bubbles attached to the reactor effluent. Suspended matter of biofilm debris is difficult to effectively settle and separate, affecting the quality of effluent water, etc.

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