Systematic treatment method for urban black and odorous water

Abstract

The invention discloses a systematic treatment method for urban black and odorous water body, which comprises cause analysis and identification of black and odorous water bodies, and causes comprise three elements: a drainage pipe network (a light urban pipe network of a heavy sewage treatment plant; a heavy sewage pipe network and a light rainwater pipe network; urban pipe network partition is not clear, and rain and sewage mixed connection and misconnection are serious; the phenomenon that a branch sewage pipe network is not covered is common; and the pipe network quality should be researched); bottom mud analysis (riverway (lake) bottom mud deposition is serious, and the bottom mud amount is large; the sediment detection result is poor, the pollutant indexes are many, and the content ishigh; the release speed of sediment pollutants is high, so that the water quality of a river channel(lake) is influenced; and a hydrodynamic flow state (river channel section; the water depth of a riverway (lake); and a water supplementing source and water quality of a river channel (lake)). The systematic treatment method for urban black and odorous water body is provided by analyzing and identifying the current situation and forming reasons of the black and odorous water body nationwide at present.

Description

technical field [0001] The invention relates to the field of urban black and odorous water treatment, in particular to a systematic treatment method for urban black and odorous water. Background technique [0002] Urban black and odorous water body refers to the general term for water bodies that present unpleasant colors (black or blackish) and / or emit unpleasant odors (stinky or stench) in urban built-up areas. The cause of black and odorous water: Under anoxic and anaerobic conditions, metal ions such as iron and manganese in the water form compounds such as ferrous sulfide and manganese sulfide with sulfur ions in the water; suspended particles in the water absorb ferrous sulfide, Manganese sulfide, etc., causing the water to turn black. [0003] The source of urban black and odorous water treatment lies on the shore, the key lies in the outlet, and the core lies in the pipe network. There are a variety of treatment measures for the current domestic black and odorous wa...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned black and odorous water treatment measures lack permanence, mainly because: (1) the overall control of pollution sources is limited; (2) lack of water quality improvement and hydrodynamic improvement measures; (3) lack of long-term maintenance of water quality and long-term operational measures