复合反应器污泥硝化与反硝化性能的研究

Study on Nitrification and Denitrification of Sludge in Hybrid Biological Reactor

采用投加多孔悬浮载体所构成的复合反应器处理生活污水，并与普通活性污泥法进行了比较。重点研究了两反应器中污泥的硝化活性与反硝化活性。试验表明，复合反应器ＣＯＤ、ＮＨ３－Ｎ、ＴＮ处理效果均好于对照反应器。当负荷较低时，两反应器中附着相与悬浮相污泥好氧活性相近；负荷提高时，两反应器污泥总好氧活性提高，但由于泥龄降低，两反应器悬浮相污泥硝化活性降低，而复合反应器附着相污泥不受泥龄影响，硝化活性提高。在本试验负荷下，复合反应器中污泥反硝化活性远远大于对照反应器。

Abstract Sewage was treated by using the hybrid reactor with porous suspended carriers (polyurethane foam) as media and a comparision with conventional reactor was made.The study focused on the capability of nitrification and denitrification of the sludge in the reactors.The result showed that the hybrid reactor had higher sludge concentration and better removal of pollutant COD,NH 3-N and TN than the control reactor.When the organic and NH 3-N loadings were low,capability of nitrification and denitrification of the sludge was close.As the loadings were increased,the capability of nitrification and denitrification of the sludge became deprssed,but that of attached sludge became enhanced.Capability of denitrification of sludge in the hybrid reactor was much greater than that of sludge in the control reactor.