Present Situation and Renovation Strategy of Sewage System at Nanhu District in Jiaxing City
There are common problems in urban underground sewage system,such as aging facilities,insufficient ability,mixed(wrong)connection of rain and sewage,sewage leakage,pipeline function and structural defects,resulting in the increasing problems of black and odorous water bodies.Thereby the old sewage systems urgently need renovation.This article takes the sewage system upgrading and renovation project in Nanhu District as an example,explores the ideas and technical points of municipal sewage pipeline renovation in detail from three aspects:the present situation of the sewage systems,renovation techniques and renovation strategies,providing technical reference for similar urban sewage system renovation projects.
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