Advanced treatment system and method for municipal domestic wastewater

Abstract

The invention relates to an advanced treatment system for municipal domestic wastewater, and in particular relates to an advanced treatment system and method for municipal domestic wastewater. The advanced treatment system for the municipal domestic wastewater comprises a water inlet pipe and a water outlet pipe, as well as a composite lift bed bio-membrane reactor, a flocculation reactor, a compression type filtering material filter, a chemical dosing device and an aerating apparatus, wherein the aerating apparatus is used for ventilating the composite lift bed bio-membrane reactor, the flocculation reactor and the compression type filtering material filter. According to the advanced treatment system for the municipal domestic wastewater, the treatment effect can be improved; the technological process and the structure arrangement are simplified; the management and operation strength is reduced; and the floor area and the operation cost are reduced.

Description

technical field [0001] The invention relates to an advanced treatment system for domestic sewage, in particular to an advanced treatment system and method for urban domestic sewage. Background technique [0002] With the continuous acceleration of my country's urbanization process, the problem of urban water pollution has become increasingly prominent. Many cities and towns are facing the situation of concentrated industrial development, rapidly increasing population and decreasing environmental capacity at the same time. In recent years, the national and local requirements for the treatment and utilization of urban domestic sewage have become higher and higher, and more and more regions have required the implementation of the first-class A standard of the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002). The effluent nitrogen, phosphorus, organic matter and suspended solids of urban sewage treatment plants using conventional secondary treatm...

AI Technical Summary

Problems solved by technology

The biological treatment method cannot meet the optimal conditions for nitrogen and phosphorus removal at the same time, and has limited ability to remove refractory organic matter, and the operation and management are complicated. Among them, A / O and its modification process need to set up sludge reflux and mixed liquid reflux, SBR Large power consumption, high equipment idle rate, BAF needs frequent backwashing, and the filter material is easy to clog; the traditional coagulation-sedimentation-filtration process has a good effect on the removal of suspended solids, but involves many structures and occupies a large area. Material easy to harden

Generally speaking, the traditional urban domestic sewage advanced treatment system has complex processes, large footprint, high energy consumption, and complicated operation and management.

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