Multi-stage synergistic self-circulation anaerobic ammonia oxidation reaction device

Abstract

The invention relates to the technical field of sewage treatment devices, and provides a multistage synergistic self-circulation anaerobic ammonia oxidation reaction device. The device comprises: a main body, a water body accelerator, an ascending guide pipe, and an aeration device, wherein the main body is provided with an inlet and an outlet, and is internally provided with a main reaction zone; a gas-liquid separation zone is arranged above the main reaction zone; the water body accelerator is connected with the inlet, and at least one part of the inner diameter of the water body accelerator decreases in the flowing direction of the water body; the ascending guide pipe is arranged in the main body, a main reaction zone is formed between the ascending guide pipe and the main body, the water inlet end of the ascending guide pipe corresponds to the water outlet end of the water body accelerator, and a first notch is formed in the end, corresponding to the water body accelerator, of the ascending guide pipe; the aeration device is arranged in the main reaction zone; the water inlet end of the gas-liquid separation zone is communicated with the main reaction zone, and the water outlet end of the gas-liquid separation zone is communicated with the outlet. The multistage synergistic self-circulation anaerobic ammonia oxidation reaction device has the advantages that water distribution is more uniform, growth of anaerobic ammonia oxygen bacteria is facilitated, and the water purification efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment devices, in particular to a multi-stage cooperative self-circulating anaerobic ammonium oxidation reaction device. Background technique [0002] Anaerobic ammonium oxidation technology is a short-cut biological denitrification process, and is known as the most promising sewage denitrification process. Anaerobic ammonium oxidation is the reaction of nitrite (NO 2 - ) as the electron acceptor to convert ammonia (NH 4 + ) into nitrogen (N 2 ), accompanied by the fixation of CO with nitrite as electron donor 2 and produce nitrate (NO 3 - ) biological process. [0003] When distributing water in the reactor, the branch pipe type point-to-point water distribution is usually adopted, that is, the water distribution is carried out through a main pipe connected to the external pump body and a plurality of branch pipes connected to the main pipe. However, this water distribution method wil...

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome that the multi-stage synergistic self-circulating anammox reaction device in the prior art adopts branch-type point-to-point water distribution, which easily causes the water passing holes on the water distribution pipe to be easily blocked, resulting in Disadvantages of uneven water distribution and large water loss, high head of the pump body, and high energy consumption

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