Sewage integrated processing system and method

Abstract

The invention relates to a sewage integrated processing system, and a method. The sewage integrated processing system comprises a pretreatment device, an A2O system, a high grade deposition zone, an air blower, a sludge flow path, and a digestion liquid flow path; the A2O system comprises an anaerobic zone, a I grade anoxic zone, an aerobic zone, a II grade anoxic zone, and a postposition aerobiczone; the pretreatment device, the anaerobic zone, the I grade anoxic zone, the aerobic zone, the II grade anoxic zone, the postposition aerobic zone, and the high grade deposition zone are communicated through a sewage flow path successively; the air blower is communicated with the II grade anoxic zone, the postposition aerobic zone, and the aerobic zone through an air flow path respectively; thesludge flow path is communicated with the anaerobic zone, the I grade anoxic zone, and the high grade deposition zone respectively; and the digestion liquid flow path is communicated with the anaerobic zone and the I grade anoxic zone respectively. According to the above structure, processing technology operation mode can be adjusted based on water quality of sewage to be processed, required concentration values in a plurality of water body standards are achieved; the system structure is practical; cost is relatively low; the processing method is convenient to control; and processing efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an integrated sewage treatment system and method. Background technique [0002] With the rapid development of my country's industrial economy and urban construction, a large amount of domestic and industrial sewage flows into rivers, lakes or groundwater, causing serious pollution to water bodies and affecting fishery water and domestic water. Sewage pollution has become a constraint on national development. Therefore, the country's discharge standards for sewage treatment plants are becoming more and more stringent. Under the new form of my country's increasingly stringent environmental protection policies, the original activated sludge method and its derivative technologies obviously cannot meet the ever-tightening pace of upgrading sewage discharge standards. Therefore, many sewage treatment plants are faced with the need to introduce new technologies and ...

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Problems solved by technology

[0004] The present invention designs a sewage integrated treatment system and method, which solves the problem of high difficulty in existing sewage treatment

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