Department of Municipal Engineering, School of Civil Engineering, Wuhan University, No. 8 South Donghu Road, Wuhan 430072, PR China.
J Environ Manage. 2010 May;91(5):1237-42. doi: 10.1016/j.jenvman.2010.02.001. Epub 2010 Feb 26.
A new contact oxidation filtration separation integrated bioreactor (CFBR) was used to treat municipal wastewater. The CFBR was made up of a biofilm reactor (the upper part of the CFBR) and a gravitational filtration bed (the lower part of the CFBR). Polyacrylonitrile balls (50mm diameter, 237 m(2)/m(3) specific surface, 90% porosity, and 50.2% packing rate) were filled into the biofilm reactor as biofilm attaching materials and anthracite coal (particle size 1-2mm, packing density 0.947 g/cm(3), non-uniform coefficient (K(80)=d(80)/d(10))<2.0) was placed into the gravitational filtration bed as filter media. At an organic volumetric loading rate of 2.4 kg COD/(m(3)d) and an initial filtration velocity of 5m/h in the CFBR, the average removal efficiencies of COD, ammonia nitrogen, total nitrogen and turbidity were 90.6%, 81.4%, 64.6% and 96.7% respectively, but the treatment process seemed not to be effective in phosphorus removal. The average removal efficiency of total phosphorus was 60.1%. Additionally, the power consumption of the CFBR was less than 0.15 kWh/m(3) of wastewater treated, and less than 1.5 kWh/kg BOD(5) removal.
采用新型接触氧化过滤分离一体化生物反应器（CFBR）处理城市污水。CFBR 由生物膜反应器（CFBR 的上部）和重力过滤床（CFBR 的下部）组成。将聚丙烯腈球（直径 50mm，比表面积 237m²/m³，孔隙率 90%，填充率 50.2%）填充到生物膜反应器中作为生物膜附着材料，将无烟煤（粒径 1-2mm，堆积密度 0.947g/cm³，不均匀系数（K80=d80/d10）<2.0）放置到重力过滤床中作为过滤介质。在 CFBR 中，有机容积负荷为 2.4kgCOD/（m³d），初始过滤速度为 5m/h 时，COD、氨氮、总氮和浊度的平均去除率分别为 90.6%、81.4%、64.6%和 96.7%，但处理过程似乎对磷的去除效果不佳，总磷的平均去除率为 60.1%。此外，CFBR 的能耗小于 0.15kWh/m³处理的废水，小于 1.5kWh/kgBOD5 的去除量。
