Honeycomb high-efficiency sinking flow aerobic reactor

Abstract

The invention discloses a honeycomb-type efficient down-flow aerobic reactor which comprises a housing, wherein a water inlet aeration region, a gas-stripping down-flow mixing region and a sedimentation filtering region which are arranged in the housing from top to bottom, wherein a gas-liquid separation tank is connected to the top of the housing; a water distribution pipe and an aeration device are arranged in the water inlet aeration region; a down-flow pipe and gas-stripping pipes are arranged in the gas-stripping down-flow mixing region; the gas-stripping pipes are arranged around the down-flow pipe; aeration devices are arranged in the gas-stripping pipes; the upper ends of the down-flow pipe and the gas-stripping pipes are connected to the gas-liquid separation tank; a water outlet weir is arranged above the sedimentation filtering region; a water outlet pipe is arranged on the outer side of the water outlet weir. According to the reactor, the running mode of a conventional aerobic reactor is overturned; bottom sludge is reversely lifted upwards and runs to the bottom at the high speed to form intense mass transfer together with wastewater which runs upwards, and sludge-water mixed liquid participates in gas stripping in the whole process, so that the mass transfer becomes relatively intense, the sludge sedimentation is avoided, the sludge loss is maximally reduced, and the treatment efficiency is remarkably improved; meanwhile, a gas-solid-liquid separator is removed and the reactor structure is simplified.

Description

technical field [0001] The invention relates to an aerobic reaction device used in the biochemical treatment stage of sewage treatment, belonging to the technical field of aerobic reaction. Background technique [0002] The various aerobic reaction wastewater treatment technologies currently used at home and abroad are mainly activated sludge method, SBR, CASS, A / 0, A / A / O, A / A / A / O, etc. Generally, the depth of the pool is less than 6 m, COD volume load is usually less than 1kgCOD.m3.d, flocculent sludge is used for start-up and operation. The above technologies occupy a large area, require a large investment, have a long construction period, and are relatively complicated in operation and management. It is difficult to apply to high-concentration water quality and sewage with poor biochemical properties. [0003] Chinese patent document CN103332784A discloses a "Three-Stage Circulating Aerobic Reactor". The upper part of the zone is equipped with a first-level gas-solid-li...

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Problems solved by technology

However, the structure is complex, and the bottom sludge cannot be used, so it is not suitable for high-concentration water quality and poor biochemical sewage treatment.

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