Urban sewage plant upgrading and reconstruction treatment process and system

Abstract

The invention discloses an urban sewage plant upgrading and reconstruction treatment process and system, and belongs to the technical field of sewage treatment. The system consists of an anaerobic tank, an anoxic tank, an aerobic tank, an oxygen elimination tank and an MBR tank, an internal carbon source in inlet water can be fully utilized for denitrification through sectional water inlet, and reflux liquid obtained after oxygen elimination of the oxygen elimination tank does not contain dissolved oxygen so that the carbon source in the anoxic tank only supplies denitrifying bacteria for denitrification; the tail end of the anoxic tank flows back to the anaerobic tank so that a single anaerobic phosphorus release reaction is carried out in the anaerobic zone, and denitrifying bacteria andphosphorus-accumulating bacteria do not compete for organic matters. Phosphorus release in the anaerobic zone and denitrification in the anoxic zone are carried out respectively and do not influenceeach other. The process can stably reach the standard IV water standards (COD is less than 30mg / L, BOD is less than 6mg / L, NH4 + -N is less than 1.5 (2.5) mg / L, TN is less than 15mg / L, TP is less than0.3 mg / L and SS is less than 5mg / L).

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a treatment process and system for upgrading and transforming urban sewage plants. Background technique [0002] Water is the source of life and is closely related to human life. With the high development of my country's industrialization and the continuous improvement of people's living standards, various industrial wastewater and domestic sewage have shown an obvious increase in the number and types of pollutants. The improvement of pollutant discharge standards of sewage treatment plants, the promotion of standard upgrading and renovation of sewage treatment plants, and the realization of better sewage treatment effects have become the focus of widespread social concern. The upgrading and renovation of urban sewage treatment plants involves many links such as process, technology, equipment, operation, and investment. In order to save investment, the upgrading and re...

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Problems solved by technology

Fully analyzed the advantages and disadvantages of the existing upgrading and upgrading process, and proposed a high-efficiency and low-consumption sewage treatment plant upgrading and upgrading treatment process and system, so as to solve the problem of substandard treatment effect, high energy consumption, and operating costs of the existing sewage treatment plant High, there are problems such as secondary pollution

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