底曝氧化沟工艺在污水处理工程中的设计应用

Vol36No3201043任向锋杭世珺(,100082)针对我国南方部分地区污水处理厂进水水质浓度变化较大,为保证出水水质稳定达标,提出了采用水下推进器和鼓风曝气相结合的底曝氧化沟处理工艺,不仅可以根据进水水质灵活地调节曝气量,满足出水水质标准,而且可以节省能耗结合具体工程实践,提出了工艺设计要点和需要注意的问题氧化沟底部曝气推流曝气水下推进器0,,,,,,,2002,10m3/d,2004,20m3/d,,,1,,,,,,,,,:(1),30,,,,,,,(2),;,,,,BOD5NH3N,,,,,4,31,6000m3/h,18000m3/h,44Vol36No320104321,,,,1,6000m3/h,1431,2,145%,8700m3/h,2061(3),(4),,,,,,,,,,,,,,,,;,,,,6,4,,11CODCr/mg/L300(137.29)60(23.12)BOD5/mg/L120(56.83)20(6.85)SS/mg/L100(62.50)20(10.74)TP/mg/L2(2.74)1(1.26)NH3N/mg/L25(20.42)15(1.61):,1,,,,,54%,22.1,,,,,1/2,,,,DO1.5~2mg/L,DO1mg/L,,,,2.2,,(GB500142006)(2~8W/m3),,0.3m/s,4.5m,,,,,,,,,,,,Vol36No3201045,,,,,,,5W/m3;,1.47kW2.2kW,0.35m/s,,,0.35m/s,2~3W/m32.3,,,,5m2,,11,,,52.5m,13m,,5,2.4,,,,,,,,,,,,3(1),,,,(2),,,(3),(4)&:10008232Emai:[e-mail]:20090823:20091223