Application Case of AAOA+MBR Process in a Semi-Underground WWTP in Changsha
Under the guidance of the"two mountains"theory in the new era,municipal facilities pay more attention to environmental impact while playing their functions.In recent years,underground wastewater treatment plants(WWTPs)have been widely used as a land saving and environment-friendly construction form.As an innovative membrane technology,membrane bio-reactor(MBR)process can eliminate traditional process such as secondary sedimentation tank and advanced treatment facilities.The application of MBR process in the WWTPs can greatly reduce the civil engineering investment and save the land occupation of the project.Taking a WWTP in Changsha as an example,this paper introduces the application of MBR process in underground WWTPs,and summarizes the design essentials of underground sewage plant.The design scale of the WWTP is 250 000 m3/d,and the main process is AAOA+MBR+UV.The effluent quality is superior to the first level standard of Hunan Province.Through the environment-friendly construction mode,the land value near the plant are activated.The land standard of this project is only 0.3 m2/(m3·d-1)which is far lower than the national standard,this paper provides reference for similar projects.
membrane bio-reactor(MBR)underground WWTPenvironmentally friendlydesign schemestricter effluent standard
万方数据
维普
