微污染水源水生化处理池的排泥

Sludge Discharge in Biological Treatment of Slightly Polluted Raw Water

通过中试规模试验系统 ,研究了大型微污染水源水生物接触氧化处理工程 (渠道式 )中生化池的排泥方式。结果表明 ,在生化池近底流速超过 0 2 0m/s时 ,可保证泥沙不会在池底淤积 ,无需设置泥斗等排泥设施。工程实践证明 ,以较高断面平均流速运行的无泥斗生化池池底不会淤积泥沙 。

By a pilot plant research on the sludge discharge pattern of biological contact oxidation process treating high capacity of slightly polluted raw water in canal, it has been confirmed that under where the velocity near the bottom of the biological tank is over 0.2m/s, no sediment will be accumulated at the bottom and the sludge discharge devices are not necessary. Engineering practice also shows that when the tank without sludge funnel is operating in high average sectional velocity, no sediment accumulation at the bottom and under normal aeration condition, no evident effects on N removal caused by the un uniform distribution of velocity through the section of the tank have been observed.