plug flow ao reactor

Abstract

The invention relates to a plug flow type AO reactor, which comprises a reactor body, wherein the inner side of the reactor body is divided into a plurality of anoxic reaction areas and aerobiotic reaction areas which are mutually alternantly arranged from left to right through baffles; the aerobiotic reaction area on the tail end of the reactor is an MBR (membrane bio-reactor) membrane aerobioticreaction area; the MBR membrane is arranged in the MBR membrane aerobiotic reaction area; the upper parts of the anoxic reaction areas and the upper parts of the aerobiotic reaction areas are communicated through overflow ports arranged on the baffles; the bottoms of the anoxic reaction areas and the bottoms of the aerobiotic reaction areas are communicated; one group of aerobiotic reaction areaaerators is arranged below each aerobiotic reaction area; the MBR membrane is provided with a water discharging device; the bottoms of the MBR membrane aerobiotic reaction areas are provided with twogroups of MBR membrane aerobiotic reaction area aerators. According to the plug flow type AO reactor, nitrification liquid reflux can be realized under a situation that no reflux pump is required, a whole system does not need a secondary sedimentation tank, and sludge reflux is not required.

Description

technical field [0001] The invention relates to a plug flow type AO reactor, which belongs to the field of sewage treatment equipment. Background technique [0002] The A / O process is a traditional sewage aerobic biological treatment method, which combines the anoxic / anoxic section and the aerobic process section to achieve the removal of ammonia nitrogen and total phosphorus while removing CODcr in wastewater. The principle is as figure 1 Shown: The heterotrophic bacteria in the A / O process in the anoxic section hydrolyze the suspended pollutants such as starch, fiber, carbohydrates and soluble organic matter in the sewage into organic acids, decompose the macromolecular organic matter into small molecular organic matter, and transform the insoluble organic matter When these anoxic hydrolyzed products enter the aerobic tank for aerobic treatment, the biodegradability of sewage is improved and the efficiency of oxygen is improved; in the anoxic section, heterotrophic bacter...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a plug-flow AO reactor, which solves the problem that the conventional A / O process occupies a large area, the processing load is low, the reflux of nitrifying liquid, the large power consumption of sludge reflux, and the large area occupied by the sedimentation tank , high construction costs and other issues

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