Abstract:The mode of "One Enterprise One Pipe" collection of industrial sewage was used in “the third-party governance of environmental pollution” in Ningbo Economic and Technological Development Zone. After comprehensively consideration of the pipes suitable for sewage water, as well as the construction and maintenance conditions of sewage pipelines, two forms of direct buried trench and pipe jacking trench were adopted. Using trench protection under the road can effectively reduce the pipeline plane size than directly burying. The pipe gallery mode of outer pipe jacking + inner pipe laying was adopted to cross the river, which better meet the requirements of landscape and management