Aerobic three-phase separator and application method thereof in sewage treatment

Abstract

The invention relates to an aerobic three-phase separator and an application method thereof in sewage treatment. The separator comprises parallel end plates, two guide plates, oblique plates, an overflow weir, outlets, precipitation partitions, sludge precipitation areas, guide areas, and conical sludge funnels. The guide plates are perpendicularly connected with the end plates to form top rectangular cavities respectively. The bottom ends of the two guide plates fold inward and are perpendicularly connected with the end plates to form the oblique plates having bottom conical cavities with sludge returning cracks. The overflow weir is arranged between the two end plates of the top rectangular cavities. The portions, corresponding to the overflow weir, of the end plates are provided with the outlets communicated with the overflow weir. The precipitation partitions overhanging downward along the tops of the two end plates are arranged between the overflow weir and the guide plates on two sides symmetrically and respectively. The sludge precipitation areas are formed between the precipitation partitions. The guide areas are formed between the precipitation areas and the guide plates. The oblique plates are folded inward by the guide plates to form the conical sludge funnels. The application method includes: at least one three-phase separator is mounted in an aeration tank for aerobic biological treatment by being supported or suspended by supports, the outlets of each overflow weir are connected through pipelines or grooves, and the total discharged water is discharged water of aerobic biological treatment.

Description

technical field [0001] The invention relates to a reaction, separation and sedimentation device, in particular to a gas, liquid and solid three-phase separator for aerobic biological treatment process and its application method in sewage treatment. Background technique [0002] The aerobic activated sludge method is a relatively mature biological treatment technology, which is widely used in the current urban sewage treatment. In the treatment of some high-concentration industrial wastewater, the anaerobic sewage must also pass through the aerobic activated sludge. method for processing. The factors that play a key role in the treatment effect in the aerobic activated sludge sewage treatment system are mainly sludge concentration (amount of microorganisms), dissolved oxygen efficiency (microbial activity) and sedimentation efficiency (mud-water separation effect), that is, good The sewage treatment system of the oxygen active substance method will involve the contact and se...

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Problems solved by technology

During this process, the activated sludge will continue to circulate between the aerobic tank and the sedimentation tank. On the one hand, it consumes a lot of energy. On the other hand, due to the continuous change of the microbial growth environment, its biological activity is reduced, which is not conducive to biodegradation. The progress of the reaction

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