组合流反应器启动运行试验

以含氮磷的模拟生活污水为处理对象,对自行设计的推流、折流与完全混合流的组合流动反应器进行启动试验研究。试验分为两个部分,首先对普通活性污泥进行驯化培养,然后将驯化好的活性污泥移到组合流反应器内,加入污水进行连续启动运行。试验连续运行30 d,结果表明在启动运行后期,COD、TP、氨氮的去除率分别达85%、80%及70%以上,好氧区硝态氮的累积率稳定在28 mg/L,说明组合流反应器启动成功。

START-UP EXPERIMENT OF A REACTOR WITH COMPOUND FLOW PATTERN

The start-up of a self-designed sewage reactor with compound pattern of plug flow,baffled flow and mixed flow is experimentally studied by treating a artificial sewage containing nitrogen and phosphorus.The research consists of two steps: firstly a common activated sludge is acclimated,and then the acclimated sludge and sewage are put into the reactor to do start-up the experiment.Within a continuous running for 30 d the results show that in the late period of start-up operation the removal rates of COD,TP,NH+4-N are 85%,80% and 70% respectively,and the NO-3-N is accumulated to 28 mg/L,indicating that the start-up of the reactor is successful.