Zeolite-GAC biological filter for pretreatment of micro-polluted source water in Lanzhou section of Yellow River
WANG Ying1, WEI Li2, YANG Ya-hong1, XIE Gang2
1.School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2.School of Civil Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
Abstract：Zeolite-GAC biological filter was used for pretreatment of micro-polluted source water of Lanzhou section of Yellow River.Wastewater flowed upward through the Zeolite-GAC biological filter.By means of natural bio-film,biological film is attached and grown on the surface of the fillers after a series of comparative experiments.Under different conditions of HRT,removal efficiency of pollutants was detected and measured.The bio-film endurance of shock loading,under a certain condition of gas and water ratio and HRT,was detected and the effects of Zeolite filter bed are compared with Zeolite biological filter and active carbon biological filter.The results show that under the conditions of HRT of 40 min,air-water ratio 1∶ 1,and water temperature 25~30 ℃,the removal rate NH3-N,CODcr,UV254,and turbidity are averaged at 95%,32.68%,9.42% and 70.10%,respectively,with high resistance to shock loading.
王瑛；魏丽；杨亚红；谢刚. 生物滤池预处理黄河微污染原水的试验[J]. 排灌机械工程学报, 2007, 25(4): 61-63.
WANG Ying, WEI Li, YANG Ya-hong, XIE Gang. Zeolite-GAC biological filter for pretreatment of micro-polluted source water in Lanzhou section of Yellow River. Journal of Drainage and Irrigation Machinery Engin, 2007, 25(4): 61-63.
