A kind of AAO sewage treatment system and its treatment method

Abstract

The invention discloses an AAO sewage treatment system and a treatment method thereof, comprising: a primary lifting pump room, an anaerobic pool, an anoxic pool, an aerobic pool, a secondary sedimentation pool, a secondary lifting pump room, a coagulation pool, and a sedimentation pool , denitrification filter, contact disinfection pool, effluent pool, sludge pool; between the secondary lifting pump room and the denitrification filter, there is an overpass for directly transporting the sewage in the secondary lifting pump room to the denitrification filter Pipeline; the effluent pool is equipped with online TN instrument, online ammonia nitrogen instrument, online TP instrument, online COD instrument, and online residual chlorine instrument. There is a sludge return pump in the sludge pump room. The present invention precisely controls the entire sewage treatment system to achieve precise operation through the setting of on-line instruments and transcending pipelines, and can effectively reduce energy consumption and drug consumption while ensuring that the effluent water quality of the sewage plant reaches the standard; at the same time, it can effectively ensure the input of disinfectants Increase the amount to ensure the effective elimination of bacterial viruses and reduce the risk of spreading infectious viruses.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an AAO sewage treatment system and a treatment method thereof. Background technique [0002] Anaerobic-Anoxic-Oxic (AAO) is a commonly used sewage treatment process, which can be used for secondary sewage treatment or tertiary sewage treatment, as well as reclaimed water reuse, and has good denitrification The phosphorus removal effect is one of the three mainstream processes of sewage treatment in my country, and the number of projects that have been built and are under construction at home and abroad is huge. With the increasingly prominent problem of water pollution in our country, the improvement of urban sewage treatment and discharge standards has become the general trend. Judging from the current requirements for improving the quality of the water environment, the effluent treated by many urban sewage treatment plants is often discharged into urban rivers and beco...

AI Technical Summary

Problems solved by technology

[0003] At present, the sewage treatment process of my country's urban sewage treatment plants has the following defects: First, most of them are extensive process control, with the first goal of achieving sewage treatment and discharge, resulting in a large waste of equipment and chemicals, and low overall operating efficiency

Second, the effluent from sewage treatment plants is usually not monitored on-line for disinfection. The control of pathogenic bacteria and the disinfection effect are based on laboratory tests. It is difficult to accurately control the disinfection effect of effluent from sewage treatment plants. , There is a greater risk of bacteria and virus transmission in the effluent after the treatment of the sewage treatment plant

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