A three-way anammox bioreactor

Abstract

The invention relates to a ternary anaerobic ammoxidation bioreactor. The ternary anaerobic ammoxidation bioreactor comprises a reactor vessel, wherein the reactor vessel comprises a biological reaction unit, a sludge recovery unit and a three-phase separation unit; the lower end of the biological reaction unit is provided with a water inlet, and a porous barrier plate is mounted in the internal cavity of the biological reaction unit; the sludge recovery unit is sequentially provided with a water outlet, a return port and a sludge discharging port from top to bottom, two parallel tilting plates with downward tail ends are arranged at the water outlet, and the return port and the sludge discharging port are respectively provided with control valves; and the three-phase separation unit is located above the biological reaction unit and the sludge recovery unit, and an exhaust port is formed in the upper part of the three-phase separation unit. The ternary anaerobic ammoxidation bioreactor has the advantages that anaerobic ammoxidation bacteria are effectively retained so as to accelerate process startup; the problem that the loss of sludge in the reactor is caused due to sludge up-floating is effectively solved so as to maintain enough biomass; and the submerge-bathing conservation of anaerobic ammoxidation sludge is realized, and the activity of the anaerobic ammoxidation sludge is maintained by the sludge recovery unit.

Description

technical field [0001] The invention relates to a three-way anaerobic ammonia oxidation bioreactor. Background technique [0002] Anaerobic ammonium oxidation is a new biological nitrogen removal process, which can reduce nitrite to nitrogen under anaerobic conditions with ammonia as an electron donor, and realize the simultaneous removal of two nitrogen pollutants. Compared with the traditional biological denitrification process, anaerobic ammonium oxidation has the advantages of good denitrification effect, less residual sludge output, low operating cost, etc., and has broad application prospects. However, the more commonly used anammox reactors (upflow anaerobic sludge bed reactor, anaerobic fluidized bed reactor, anaerobic filter, etc.) usually have some defects, such as: poor mud-water separation effect during process start-up , the sludge loss is serious, and it is difficult to collect the sludge after it is lost, which makes it difficult for the anammox bacteria to e...

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Problems solved by technology

[0003] Aiming at the problems of poor mud-water separation effect, serious sludge loss and difficulty in collecting sludge after sludge loss in current anaerobic ammonium oxidation reactors, the present invention proposes a three-way anaerobic ammonium oxidation bioreactor, which can effectively solve the problems caused by sludge floating. The resulting sludge loss and the difficulty of collecting the lost sludge can achieve the stability of biomass

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