文档介绍：Effect of Flow Velocity on Filler Dosed Enhanced
Primary Treatment of Municipal Sewage
Haiping Guo, Lihua Cheng, Xuejun Bi, Changqing Liu
school of environmental & municipal engineering, Qingdao Technological University, Qingdao, China
e-mail: haiping20082003@
Abstract—Filler dosed enhanced primary treatment technology primary sedimentation tank. The removal efficiency of SS,
was adopted to treat municipal sewage. The influences of flow COD, TN, TP and the influencing factors of this technology
speed on the treatment efficiency and operation cycle were was investigated in this study.
investigated. The results showed that this technology could
remove SS, COD, and TP efficiently. When the flow speed
increased from to 10 m/h, the removal rates of SS, COD, II. MATERIALS AND METHODS
and TP increased from 62% to 76%, 50% to 68% and 43% to
62%, respectively. Flow velocity affected the operation cycle A. Water quality
significantly. Results parative experiment showed that the Raw water used in this experiment was from the effluent of
average removal rate of SS, COD by filler dosed enhanced the aerated grit chamber of Qingdao Licunhe Wastewater
primary treatment increased by % and % than that of Treatment Plant. Water quality during the test was: CODCr
the primary sedimentation tank of sewage treatment plant. 400~900mg/L, SS 400~1000