硝化-反硝化曝气生物滤池改进工艺处理水产养殖废水
发布时间：2018-08-07 11:45
【摘要】：采用出水回流的上流式曝气生物滤池处理模拟水产养殖废水,逐一优化厌氧/好氧(A/O)一体化曝气生物滤池中水力负荷、气水体积比以及硝化液回流比等3个因素,通过分析出水水质确定最佳运行参数.结果表明:1)设定厌氧/好氧区域体积比为1∶1,当工艺中水力负荷为39.86m3·(m~2·d)~(-1),硝化液回流比为200%,气水体积比为2∶1,水力停留时间为1.81h时,污染物去除效果最佳,化学需氧量(chemical oxygen demand,COD)、氨氮、总氮和总磷的平均去除率分别达71.09%,96.29%,78.26%,17.22%;2)各优化条件下,当A/O体积比为1∶1时,该改进工艺下总氮去除效果可达GB 3838—2002《地表水环境质量标准》中的Ⅲ类标准.
[Abstract]:The upflow biological aerated filter (BAF) with effluent reflux was used to treat simulated aquiculture wastewater. Three factors such as hydraulic load, air-water volume ratio and nitrifying liquid reflux ratio were optimized one by one in the anaerobic / aerobic (A- / O) integrated aerated biofilter. The optimal operating parameters were determined by analyzing the effluent quality. The results show that when the volume ratio of anaerobic / aerobic region is 1: 1, the hydraulic load is 39.86m3 (m2d) ~ (-1), the reflux ratio of nitrification liquid is 200g, the volume ratio of air to water is 2: 1, and the hydraulic retention time is 1.81 h, the removal efficiency of pollutants is the best. The average removal rates of chemical oxygen demand (chemical oxygen), ammonia nitrogen, total nitrogen and total phosphorus reached 71.09%, 96.29% and 78.26% and 17.22 2% respectively) under various optimized conditions, when the volume ratio of A / O was 1:1, The removal efficiency of total nitrogen under the improved process can reach the class 鈪，
本文编号：2169924
[Abstract]:The upflow biological aerated filter (BAF) with effluent reflux was used to treat simulated aquiculture wastewater. Three factors such as hydraulic load, air-water volume ratio and nitrifying liquid reflux ratio were optimized one by one in the anaerobic / aerobic (A- / O) integrated aerated biofilter. The optimal operating parameters were determined by analyzing the effluent quality. The results show that when the volume ratio of anaerobic / aerobic region is 1: 1, the hydraulic load is 39.86m3 (m2d) ~ (-1), the reflux ratio of nitrification liquid is 200g, the volume ratio of air to water is 2: 1, and the hydraulic retention time is 1.81 h, the removal efficiency of pollutants is the best. The average removal rates of chemical oxygen demand (chemical oxygen), ammonia nitrogen, total nitrogen and total phosphorus reached 71.09%, 96.29% and 78.26% and 17.22 2% respectively) under various optimized conditions, when the volume ratio of A / O was 1:1, The removal efficiency of total nitrogen under the improved process can reach the class 鈪，
本文编号：2169924
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