实验研究了外循环三相好氧生物流化床处理生活废水时活性炭载体表面生物膜的形成条件以及空气流量、水力停留时间等因素对生物膜厚度的影响.由于外循环流化床包含好氧区和缺氧区,有利于好氧菌和兼氧菌的生长.实验结果表明,0.09m3/h的空...实验研究了外循环三相好氧生物流化床处理生活废水时活性炭载体表面生物膜的形成条件以及空气流量、水力停留时间等因素对生物膜厚度的影响.由于外循环流化床包含好氧区和缺氧区,有利于好氧菌和兼氧菌的生长.实验结果表明,0.09m3/h的空气流量,3~4 h的水力停留时间和较少的接种污泥浓度有利于启动挂膜,在HRT为3~4 h,有机容积负荷3~9.8 kg COD/(m3·d)条件下,能培养出稳定的生物膜,10 d膜厚达100μm以上;当HRT为3 h,空气流量0.09m3/h,有机容积负荷率为9.8 kg COD/(m3.d)时,生物膜厚度为145μm,此时生物膜活性最好,COD去除率最高,均在90%以上.展开更多
Pilot test was made on coking plant wastewater of the Coal Chemical Corp.,Panzhihua Steel Group,China,with the biological fluidized-bed technique and A-A-O system.The results showed that when the total HTR of system w...Pilot test was made on coking plant wastewater of the Coal Chemical Corp.,Panzhihua Steel Group,China,with the biological fluidized-bed technique and A-A-O system.The results showed that when the total HTR of system was 45?h,effluent NH 3-N was 10.33?mg·L -1 ,effluent COD was less than 200?mg·L -1 ,and effluent phenol was 0.13?mg·L -1 .The operation cost is 3.60~4.36?$·(t wastewater) -1 .展开更多
文摘实验研究了外循环三相好氧生物流化床处理生活废水时活性炭载体表面生物膜的形成条件以及空气流量、水力停留时间等因素对生物膜厚度的影响.由于外循环流化床包含好氧区和缺氧区,有利于好氧菌和兼氧菌的生长.实验结果表明,0.09m3/h的空气流量,3~4 h的水力停留时间和较少的接种污泥浓度有利于启动挂膜,在HRT为3~4 h,有机容积负荷3~9.8 kg COD/(m3·d)条件下,能培养出稳定的生物膜,10 d膜厚达100μm以上;当HRT为3 h,空气流量0.09m3/h,有机容积负荷率为9.8 kg COD/(m3.d)时,生物膜厚度为145μm,此时生物膜活性最好,COD去除率最高,均在90%以上.
文摘Pilot test was made on coking plant wastewater of the Coal Chemical Corp.,Panzhihua Steel Group,China,with the biological fluidized-bed technique and A-A-O system.The results showed that when the total HTR of system was 45?h,effluent NH 3-N was 10.33?mg·L -1 ,effluent COD was less than 200?mg·L -1 ,and effluent phenol was 0.13?mg·L -1 .The operation cost is 3.60~4.36?$·(t wastewater) -1 .