A kind of anaerobic, anoxic mbbr reaction tank

Abstract

The invention belongs to the field of sewage treatment, and discloses an anaerobic and anoxic MBBR reaction tank, comprising a tank body, a transverse guide wall is vertically arranged at the bottom of the tank body, and the length direction of the transverse guide wall is consistent with the length direction of the tank body There is a stirring device on the wall of the tank body, and at least one parameter of the elevation angle, horizontal angle or height of the stirring device can be adjusted, and the bottom of the tank body is provided with an underwater propeller; The water inlet and the water outlet are located at two opposite corners of the tank body respectively. The invention realizes the continuous rotary flow of the water body by setting up the lateral guide wall, without setting up return equipment or return pipeline, ensuring the effect of the biofilm adhering to the filler, and also achieving the purpose of increasing the biomass per unit tank capacity; There are multiple pairs of stirring devices and underwater propellers to ensure the flow and stirring effect of the fluid; the second stirrer is provided with a horizontal angle to avoid the accumulation of fillers at the corners.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an anaerobic and anoxic MBBR reaction tank. Background technique [0002] MBBR (Moving Bed Bio-film Reactor, Chinese name: moving bed biofilm reactor) process is a sewage treatment process jointly developed by Norway Kaldnes Mijecpteknogi company and SINTEF research institute, which absorbs the traditional fluidized bed and biological contact oxidation method The advantages of the two processes have good nitrogen and phosphorus removal effects. The sewage continuously passes through the MBBR reactor, and the suspended filler in it gradually forms a biofilm on the inner and outer surfaces of the filler, and the sewage is purified through the action of microorganisms on the biofilm. The filler moves freely under the action of the swirling and turning of the mixed liquid in the reactor, such as figure 1 , for an aerobic reactor, the packing is moved by aeration; as figu...

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Problems solved by technology

[0006] The technical problem to be solved in the present invention is: in order to solve the traditional anaerobic and anoxic reactor single pool capacity that utilizes MBBR technology less, the pool capacity is bigger need to be equipped with high-power stirring equipment, and high-power stirring equipment will cause The filler is worn or the filler is not easy to adhere to the biofilm; if the pool is set in a rectangular shape, the pool capacity will increase, but the filler will gather at the water outlet, and a return device needs to be installed, which will greatly increase the energy consumption of the system; will collide with each other, causing a large amount of biofilm to fall off and affecting the treatment effect of the system

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