Chaoan PPP project is one of the 11 Nos. of PPP projects comprehensively promoted by Guangye Environmental Protection Group in order to implement the work requirements of the central environmental protection rectification. The project includes the construction and operation of 6 Nos. of sewage treatment plants in 6 towns in Chao¡¯an District, 24 rural integrated sewage treatment stations in 7 towns, 11 off-site lifting pump stations, and the improvement of the laying of sewage pipe network for more than 10 towns in Chao¡¯an District.