Experimental study on denitrification efficiency impacted by activated sludge filtering bed formed in gas-liquid-solid separating zone
The experimental study on denitrificaiton of nitrogenous organic wastewater using the co-processes of bio-fluidized bed plus activated sludge filter bed which formed in gas-1iquid-solid separating zone was carried out.Experimental results showed that:1) Non-suppressed nitrification bacteria group by carbon sources was reproduced in the Bio-nuidized bed system.which in turn contributed to the NH4+-N removal efficiency of up to 93％～95％;2)Dynamic and stable sludge filter was formed in the gas-liquid-solid separating zone by the setting of incline-tube and the controlling of precipitation mud condition,Which leaded to the dramatically improving of TN removal rate:3)85％BOD5 removal efficiency and 74％TN removal efficiency was achieved under the operation conditions of HRT Of 1.5h.Aeration of0.25 m3h-3,BOD5 load of 9.2-10.4 m-3d-3 and TN load ofO.65 kgm-3d-1.
nitrogenous organic wastewater bio-fluidized bed sludge filter bed biological denitrification
Heli WANG Li CHENG Nan JIANG
School of Water resources and Environment,China University of Geosciences,Beijing,100083,China College of Resource and Safety Engineering,China University of Mining and Technology,Beijing,100083,
国际会议
西安
英文
599-603
2008-05-15（万方平台首次上网日期，不代表论文的发表时间）