Urban sewage treatment refers to the measures taken to change the nature of sewage so that it does not harm the environmental waters. Urban sewage treatment technology is to use a variety of facilities and equipment and technology, the sewage contained pollution substances from the water separation and removal, so that the harmful substances into harmless substances, useful substances, water is purified, and make full use of resources.

Underground comprehensive pipe gallery is a kind of public infrastructure formed by placing two or more pipelines in it. It is the development direction of urban lifeline engineering infrastructure.The Underground comprehensive pipe gallery system not only solves the problem of urban traffic congestion, but also tremendous facilitates the maintenance and repair of municipal facilities such as power, communication, gas, water supply and drainage.