Design Of Upgrading And Renovating Technology Of Xiannvhe Sewage Treatment Plantin Shenyang City

Environment is a matter of human surival.We must pay attention to all kinds of pollution especially the water pollution problem.In recent years,with the improvement of people's living standard and the rapid development of economy in our country,the amount of aewage produced rapidly,and the composition of the wastewater became more complex,in particular,pollutants such as nitrogen and phosphorus in wastewater would cause the eutrophication.This paper determined the recent construction scale of Shenyang Xiannv river industrial zone sewage treatment plant at 200,000m~3/d,and the construction scale of the second phase at 200,000 m~3/d.After treatment of sewage treatment plant,the sewage is discharged into the Xi river,eventually integrated into the Hun river.However,due to the low construction standard,the water quality is not up to standard due to the lack of phosphorus removal and nitrogen removal equipment.The effluent quality of the sewage treatment plant have been reached the level one standard A of discharge standard of pollutants for municipal wastewater treatment plant(GB 18918-2002),through the analysis of the sewage treatment plant influent and effluent water quality and the requirements of the relevant national policy.This paper studied the engineering design of the Xiannv river sewage treatment plant in Shenyang city,and studied the data collection,analysis,water quality prediction and the demonstration of process plan.Under the premise of not change the existing wastewater treatment process,and consider the problems in the construction of phase,the process of the Xiannv river sewage treatment process is adopted by comparison and sewage treatment process:sewage treatment works secondary effluent?sewage lift pump pool?pre-denitrifying biological filter?aerated biological filter?sand sedimentation tank?UV disinfection?Xi river.This paper has improved Shenyang Xiannv river Sewage treatment plant project design,accumulated some experience which is helpful for the normal operation after the completion of the wastewater treatment plant,achieving econmic,social and environmental benefits and improving the runing and management of China's urban sewage treatment plant.