A/O生物滤池处理生活污水的挂膜启动试验研究

本试验中,A/O生物滤池挂膜启动分为两个阶段进行:第一阶段,好氧柱利用活性污泥接种后循环曝气培养生物膜;第二阶段,缺氧柱通入待处理的水及从挂膜完成后好氧柱回流的水,并逐步提高滤速启动,进行缺氧微生物的培养和驯化。本试验二级好氧滤柱采用沈阳北部污水处理厂回流污泥接种,以待处理的原水启动挂膜。试验结果表明,当滤速8.8L/h(2m/h)小流量进水,回流比1:1,二级好氧柱曝气量25L/h时,在25天内,能在填料表面形成较稳定的生物膜,出水COD、NH3-N及浊度能分别稳定到12mg/L、5.22mg/L及10NTU以下。

Research on the start-up of Anoxic-Aerobic BAF in domestic sewage

In this experiment,the A/O biofilter hangs the membrane divide into two stages:The first stage,aerobic column use active sludge vaccination when circulates the aeration raise biomembrane;The second stage,the Anoxic column passes over treats processing the water and after hangs the membrane to complete the aerobic column backflow water and to enhance the rate of percolation to start gradually,carries on the anoxic microorganism the raise and the domestication.North of Shen yang 2nd-level of anoxic filter the column to use the sewage treatment plant backflow sludge vaccination,waits for the processing original water start to hang the membrane.The test result indicated,in 25 days,when current capacity enters the water is the rate of percolation 8.8 L/h(2m/h),and the reflux ratio 1∶1,2nd-level of aerobic column aeration measures 25L/h,can form the stable biomembrane in the padding surface,COD,NH3-N and the turbidity can be able to stabilize separately to below 12mg/L,5.22 mg/L and 10NTU.