Zero-valent iron/microorganism composite filtration wall purification system for domestic sewage in irrigation areas

Abstract

The invention discloses a zero-valent iron / microorganism composite percolation wall purification system for domestic sewage of an irrigated area. According to the system, multiple sewage processing units are dug in a bank slope of a bank slope system, and domestic sewage of the irrigated area is collated to the sewage processing units to be processed through a water delivery pipeline system; the processed domestic sewage is drained to a collecting gutter and then enters an aquatic plant ditch to be deeply purified, and finally the domestic sewage is drained to rivers. The zero-valent iron / microorganism composite percolation wall purification system has the advantages that the processing efficiency is improved through the cooperation effect of zero-valent iron and microorganisms, and effluent quality is improved; a multi-level processing system and an aquatic plant wet land technology are combined to more effectively remove pollutants in water, and the effluent quality is further improved; the bank slope system is fully utilized, other earth resources are not needed, and the whole system is located underground and does not have odor; a zero-valent iron reaction box is easy to replace, manage and maintain; materials of the system can be obtained locally, and cost is low.

Description

technical field [0001] The invention belongs to the field of environmental protection sewage treatment, and in particular relates to a treatment technology for domestic sewage in irrigation areas - zero-valent iron / microbial composite percolation wall purification system and purification method, which can be directly applied to the treatment of domestic sewage in irrigation areas or small-scale domestic sewage in villages and towns, and can also be used Ecological interception of non-point source pollutants and water purification of rainfall runoff in irrigation areas. Background technique [0002] Scattered domestic sewage has become an important source of water pollution in irrigation areas in my country, and is an important part of non-point source pollution in irrigation areas. Untreated domestic sewage in irrigation areas is directly discharged into natural water bodies, which not only affects the ecological environment in irrigation areas, but also affects local residen...

AI Technical Summary

Problems solved by technology

The synergistic effect of zero-valent iron / microbes has a good effect on nitrogen and phosphorus removal. There is no relevant research report on the rural decentralized domestic sewage treatment, and it has a good application prospect.

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