Abstract: According to the environmental management of construction projects "three at the same time" that is, the system of environmental protection facilities of construction projects must be synchronized with the main project design, construction at the same time, while the use of production requirements. The project for the integrated treatment of sewage, the design of the main tasks include: an integrated wastewater treatment process to determine the choice of drink; major treatment facilities in the main process of calculation and design of major equipment selection; engineering drawings of the map; project investment and operating cost estimates as well as does not include construction, electrical appliances and so on. After studying the use of the item UASB + A2O process required to deal with water quality <<wastewater discharge standards>> (GB8978-1996) emission standards level.
Keyword: three at the same time; Biological and chemical treatment ; UASB+A2/O; CODCr