曝气生物滤池复合式接种挂膜试验研究

目的研究升流式两级曝气生物滤池复合式接种挂膜启动的方法，为曝气生物滤池能够更快、更好地发挥生物氧化功能提供依据．方法利用两级曝气生物滤池串联的方式，用陶粒作为滤料，采用接种挂膜和自然挂膜相结合的方法对曝气生物滤池进行挂膜启动．挂膜启动分三个阶段进行：第一阶段闷曝阶段（5d）；第二阶段低流速运行阶段，流速为1m／h，气量251／h（4d）；第三阶段流速为2m／h，气量25l／h（7d）．结果历时16d，COD、NH4^＋ -N的去除率分别稳定达到86．21％和70．24％，试验表明，此时曝气生物滤池挂膜启动成功；一级滤柱主要去除COD，二级滤柱主要去除NH4^＋ -N．结论采用复合式接种挂膜的方法对曝气生物滤池进行启动，时间短，微生物附着好．

Biological Aerated Filter for Compound Inoculation

In order to research into the biological aerated filter for compound inoculation,we take two up-flow biological aerated filter with ceramic particle for use.The compound inoculation is carried out in 3 stages:Firstly,the filter is only aerated without wastewater entering,and this stage goes on for 5 days;secondly,the velocity of filter is 1m/h,and the areaate is 25 l/h,and this stage goes on for 4 days;thirdly,the velocity is 2 m/h,and the areaate is 25 l/h,and this stage goes on for 7 days.The experiment demonstrates that after 16 days,the COD removal efficiency and NH4 -N removal efficiency can reach stability to respectively 86.21% and 70.24%,which demonstrates that the inoculation works well.The first filter is mainly used for COD removal,and the second for NH4 -N removal.The result of the experiment shows that the biological aerated filter is better than normal inoculation in terms of compound inoculation,for the days used are shorter and the microbe adherence is better.