Influencing factors on nitrogen removal performance of combined biological aerated filter for secondary effluent from municipal WWTP
A pilot-scale study was conducted to investigate the principal influencing factors on nitrogen removal performance of Combined Biological Aerated Filter (CBAF), including external carbon source dosage, ratio of air to water and hydraulic loading rate, with inflow of secondary effluent form a municipal WWTP in Shenzhen city. Moreover, the optimal operation mode of CBAF was determined as follows: with 15～25mg CODCr/L of added carbon source, 2:1 of the ratio of air to water and 10m3/m2·d of hydraulic loading rate, CBAF had an excellent and stable removal performance of nitrogen under this running mode. When the concentrations of NH4 +-N and TN in the influent were 1.0～17.4 mg/L and 7～23mg/L, the concentrations in the effluent were lower than 2mg/L and 15mg/L respectively. The water quality of the effluent was in accordance with the requirements of Water Quality Standard for Scenic of Environment Use (GB/T18921-2002).
combined biological aerated filter influencing factors optimal operation mode nitrogen removal
YANG Yue WANG Hong-jie ZHANG Jin-song HUANG Wen-zhang
School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090,China ShenZhen Water (Group) Co.Ltd.ShenZhen,518030,China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）