Continuous flow aerobic granule sludge culture and grain diameter control method and system

Abstract

The invention provides a continuous flow aerobic granule sludge culture and grain diameter control method. The continuous flow aerobic granule sludge culture and grain diameter control method comprises the following steps: 1) enabling input water to pass through a thick-fine grid and a primary sedimentation tank in sequence and then enter a biochemical tank; 2) pressing output water of the biochemical tank to a cyclone separator and carrying out light and weight sludge separation, wherein the cyclone separator is a built-in barb cyclone separator and is internally provided with barbs for controlling the grain diameter of granular sludge; 3) pressing and reflowing a separated heavy sludge mixed solution back to an oxygen-free tank; pressing a light sludge mixed solution to a sedimentation tank and carrying out sludge-water separation; after carrying out the sludge-water separation, taking one part of sludge as residual sludge and reflowing the residual sludge to the front end of an anaerobic tank; dehydrating the other part of the sludge and conveying the sludge to the outer side; enabling the output water of the sedimentation tank to pass through a disinfection facility and realizing up-to-standard discharging. The invention provides a continuous flow aerobic granule sludge culture and grain diameter control system. The granulation of aerobic sludge is promoted and the grain diameter of granules is controlled to be in an optimal range.

Description

technical field [0001] The invention belongs to the field of sludge treatment and relates to a continuous flow aerobic granular sludge cultivation and particle size control method and system. [0002] technical background [0003] Compared with ordinary activated sludge, aerobic granular sludge technology has good settling performance, high sludge concentration, and can withstand high organic load, load shock and toxic substances, etc., and it is becoming a hot research and report from all walks of life. Generally speaking, the formation of aerobic granular sludge is a complex process involving physical, chemical and biological effects. The mainstream view describes this process as a phenomenon of biological aggregation formed by microbial self-agglomeration under certain hydrodynamic conditions. . Scholars at home and abroad have proposed various aerobic granular sludge formation mechanisms based on their own experimental research based on different reactors, experimental m...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the current problems of difficult cultivation of aerobic granular sludge in continuous flow, long period, difficult particle size control, easy instability, etc., and aiming at the characteristics and defects of AAO process, the present invention provides a simple, economical and efficient continuous flow Flow Aerobic Granular Sludge Cultivation and Particle Size Control Method and System

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