Design and Engineering Operation of Total Nitrogen Removal Process in A Chemical Wastewater Treatment Plant
An industrial wastewater treatment plant affiliated to a chemical enterprise in Zhejiang Province was upgraded at the beginning of 2019,and the total treatment capacity was expanded from 2.88×105m3/d to 4.18×105 m3/d.The effluent quality standard was upgraded from Grade B to Grade A in the"Pollutant Discharge Standard for Urban Sewage Treatment Plants"(GB 18918-2002).According to the analysis of the water quality of the new wastewater and the operating water quality of the sewage plant before the upgrading,the total nitrogen renovation is determined to be the difficulty of this technical upgrading project.Through the demonstration of the scheme,the carrier fluidized bed biofilm treatment process was decided to be the main technical means to remove total nitrogen in the advanced treatment unit.Subsequently,the rationality of the scheme was proved by pilot test,and the relevant design parameters were obtained.The technical upgrading project was completed in early 2020,and the carrier fluidized bed biofilm tank began commissioning and operation in March.After five months of operation,good total nitrogen removal effect and stable operation were achieved,which also provides a reference for similar projects in the future.
chemical wastewater treatment plantTNoperation effect
万方数据
维普
