Short-distance nitration membrane biological reactor process and processing device thereof

Abstract

The invention discloses a short-distance nitration membrane biological reactor process and a processing device thereof. The process is characterized in that the periodical variation of the aeration volume changes the dissolved oxygen concentration inside the biological reactor, so the alternative variation of aerobic environment, oxygen deficit environment and anaerobic environment is realized soas to complete the nitration and the denitrification process; the device comprises a biological reactor and at least one membrane component, wherein the membrane component is arranged inside the biological reactor, the bottom part of the membrane component is provided with an aeration tube, and the top part of the membrane component is provided with a water generation tube; the aeration tube is sequentially connected with a flow-rate transmitter and a blower through an air supply tube, the water generation tube is connected with a water pump, and the flow rate transmitter, the blower and the water pump are respectively connected with a PLC control unit; and a water inlet tube is arranged at one side of the biological reactor. The process can realize the nitration and denitrification process inside the same reaction device. At the same time, a periodical variable aeration way is adopted inside the biological reactor, the spoiler effect is good, the pollution of the membrane component can be effectively alleviated, and the energy consumption of the membrane biological reaction device can be reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a short-range nitrification membrane bioreactor process and a treatment device thereof. Background technique [0002] Membrane bioreactor (Membrane Bioreactor-MBR) is a new type of sewage treatment equipment. Its treatment process is an organic combination of traditional sewage biological treatment process and membrane separation technology, and has been widely used in sewage treatment process. [0003] The principle of the membrane bioreactor is to replace the secondary settling tank in the traditional activated sludge process with an efficient membrane separation module. It is generally composed of two parts: a membrane module and a bioreactor. According to the position of the membrane module, it is mainly divided into separate type and bioreactor. Two types in one piece. Among them, the split type is to install the membrane module and the bioreactor separately. The m...

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Problems solved by technology

This requires that these two stages must be carried out separately with different reaction equipment, and the denitrification process generally requires an excellent carbon source, while the traditional denitrification process is located behind the nitrification and lacks a high-quality carbon source as a support, thus causing the existing The system is complex, the investment is large, and the operating cost is high

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