废水处理一体化装置试验

Study on an Integrative Device for Municipal Wastewater Treatment

通过小试研究了生物絮凝沉淀／生物膜过滤复合式工艺一体化装置对城市污水去除的效能和机理，试验结果表明：在较低溶解氧条件(D0为0．1-0．5mg/L)T，该工艺装置对SS、COD去除效果较好；在DO=0．2mg／L，生物絮凝反应区水力停留时间2．16h时，反应区内发生同步硝化反硝化(SND)，脱氮效果较好，NH-N平均去除率87．5％，出水SS、COD、NH3-N均能达到国家标准(GB18918-2002)一级标准的B标准。该一体化装置对于城市污水的有机物去除和脱氮具有一定的优越性，是一种高效低耗的污水处理技术。

An integrative device was designed for the treatment of municipal wastewater with primary enhanced bio-treatment andbiofiltration. Under low DO(0.1~0.5 mg/L)condition,SS and COD could be treated effectively. Under the conditions of 2.16 h HRT andDO 0.2 mg/L,nitrification and denitrification(SND)occurred simultaneously with nitrogen removal of 87.5%(NH3-N),and the con-centrations of SS,COD and NH3-N in the effluent met the requirement of National Wastewater Discharge Standard at the first level(GB18918-2002).