An expanded granular sludge bed （EGSB） reactor was adopted to study the influence factors and rule of enhancing granular sludge concentration and performance. The experiment was performed at 33 ℃, pH 6.0-8.0 with c...An expanded granular sludge bed （EGSB） reactor was adopted to study the influence factors and rule of enhancing granular sludge concentration and performance. The experiment was performed at 33 ℃, pH 6.0-8.0 with continuous flow by adding proper quantity of nutritional trace elements. The results show that SLR was the key of steady operation of EGSB reactor. The increment of the granular sludge was influenced by volume loading rate （VLR）, liquid up-flow velocity and sludge loading rate （SLR）. Concentration of granular sludge increased rapidly when liquid up-flow velocity was over 0.94 m · h^-1 with SLR being at 1.0-2.0 d ^-1. With the propriety parameters： liquid up-flow velocity 2.52 m · h^-1, SLR 1.0-2.2 d^-1 and VLR 8.2-13.1 kg · m ^3 · d^-1, 23 days＇ continuous operation resulted in an increment by over 80% of granular sludge concentration in the EGSB reactor, plus good granular sludge property.展开更多
以养殖废水为研究对象,分别考察了容积负荷、水力停留时间、进水浓度、回流比、上升流速、进水pH、温度等参数对PIC反应器COD去除效率的影响,获得了PIC处理养殖废水的适宜的工艺运行参数：容积负荷VLR：15-23 kg COD/（m^3·d）,HRT...以养殖废水为研究对象,分别考察了容积负荷、水力停留时间、进水浓度、回流比、上升流速、进水pH、温度等参数对PIC反应器COD去除效率的影响,获得了PIC处理养殖废水的适宜的工艺运行参数：容积负荷VLR：15-23 kg COD/（m^3·d）,HRT≥8.69 h,回流比12-15,上升流速控制在2.4-2.9 m/h,进水pH=6-8,反应温度：35-38℃。在该优化工艺条件下,PIC对猪场废水的COD去除率稳定在75%以上。展开更多
基金Supported by Key Project of the Tenth Five-Year Plan of the Ministry of Science and Technology of China (02-2-2)
文摘An expanded granular sludge bed （EGSB） reactor was adopted to study the influence factors and rule of enhancing granular sludge concentration and performance. The experiment was performed at 33 ℃, pH 6.0-8.0 with continuous flow by adding proper quantity of nutritional trace elements. The results show that SLR was the key of steady operation of EGSB reactor. The increment of the granular sludge was influenced by volume loading rate （VLR）, liquid up-flow velocity and sludge loading rate （SLR）. Concentration of granular sludge increased rapidly when liquid up-flow velocity was over 0.94 m · h^-1 with SLR being at 1.0-2.0 d ^-1. With the propriety parameters： liquid up-flow velocity 2.52 m · h^-1, SLR 1.0-2.2 d^-1 and VLR 8.2-13.1 kg · m ^3 · d^-1, 23 days＇ continuous operation resulted in an increment by over 80% of granular sludge concentration in the EGSB reactor, plus good granular sludge property.
文摘以养殖废水为研究对象,分别考察了容积负荷、水力停留时间、进水浓度、回流比、上升流速、进水pH、温度等参数对PIC反应器COD去除效率的影响,获得了PIC处理养殖废水的适宜的工艺运行参数：容积负荷VLR：15-23 kg COD/（m^3·d）,HRT≥8.69 h,回流比12-15,上升流速控制在2.4-2.9 m/h,进水pH=6-8,反应温度：35-38℃。在该优化工艺条件下,PIC对猪场废水的COD去除率稳定在75%以上。
