水力负荷对辐流式初沉池污染物去除效果的影响  

Effect of Hydraulic Loading on Pollutants Removal of Radial Flow Primary Sedimentation Tank

作　　者：张敏健[1] 徐婧静[1] 李宝刚 徐明[1] 

机构地区：[1]江苏省环境科学研究院,江苏南京210036 [2]无锡市市政和园林局,江苏无锡214000

出　　处：《环境科技》2011年第4期5-7,共3页Environmental Science and Technology

基　　金：水体污染控制与治理重大专项(200807101-003)

摘　　要：以沉砂池出水为原水,在沉淀试验研究颗粒截留速度u0基础上,通过动态试验考察水力负荷对辐流式初沉池污染物去除效果的影响。研究结果表明无机悬浮固体(FSS)分离和总悬浮固体(TSS)高效去除的颗粒截留速度u0分别为0.025 m/min和0.05 m/min。由于泥层截留作用,水力负荷qA在46.3 m3/(m2.d)时,辐流式初沉池污染去除最高效,TSS、总氮(TN)和总磷(TP)去除率分别达到81%,23%,59%。Taking the effluent from the grit chamber as raw wastewater, based on intercept velocity （u0） from sediment tests, the effect of hydraulic loading on pollutants removal of radial flow primary sedimentation tank was studied. The results showed that the Uo for the effective separation of inorganic suspended solids and TSS removal were 0.025 m/min and 0.05 m/min respectively. Because of the interception of primary sludge, with hydraulic loading qa 46.3 m3/（m2 .d）, the best removal efficiency of radial flow primary sedimentation tank was reached and removal rates of TSS, TN and TP reached 81%, 23% and 59%.

关 键 词：沉淀 表面水力负荷 初沉池 无机悬浮固体 

分 类 号：X7[环境科学与工程—环境工程]