Low Concentration Domestic Wastewater Treated by an UASB Reactor at Psychrophilic Temperature
The performance and the sludge characteristics of an upflow anaerobic sludge blanket (UASB) reactor were investigated for the treatment of low concentration (COD 400～600 mg·L-1) domestic wastewater at psychrophilic temperature (15±1℃). The laboratory-scale UASB reactor of 2.0L of useful volume was operated for a period of 174 days. An organic loading rate of around 3.0kg·m-3d-1 was treated with a 30％～50％ COD removal rate. The characteristics of sludge in UASB reactor were changed. Granular sludge has been obtained in the reactor and was well settelable. The SEM photoes of the sludge during the experiment showed that filamentous bacterium and bacillus were key organisms.
anaerobic treatment UASB reactor low concentration domestic wastewater sludge characteristics
LUO Xiangnan JI Min YANG Jingliang ZHANG Jing
Department of Environmental Science and Engineering, Tianjin University, Tianjin 300072 China;Depart Department of Environmental Science and Engineering, Tianjin University, Tianjin 300072 China Department of Environmental Science and Engineering, Hebei University of Science and Technology, Shi
国际会议
北京
英文
9-10
2006-08-03（万方平台首次上网日期，不代表论文的发表时间）