摘要
选用陶粒和碎石作为填料,在不同的进水水质和水力负荷下,对土地处理系统的运行性能进行实验室模拟研究。试验结果表明:①以人工污水作为进水,在10 cm3/(cm2.d)的水力负荷下,碎石填料20 d完成挂膜,挂膜时间较陶粒填料短。②以人工污水作为试验进水,水力负荷为15 cm3/(cm2.d)时,陶粒和碎石填料的COD平均去除率分别为86.2%、84.6%;水力负荷为20 cm3/(cm2.d)时,COD平均去除率分别为78.2%、75.2%。③进水水质不同,COD去除效果存在较大差异。④陶粒填料表现出略优于碎石的COD去除效果,COD去除率较碎石填料高1.6%-8.6%。
In this experiment,ceramist and rubble are chosen as fillers and the operating characteristics of land treatment system is studied in lab-scale at different influent water qualities and hydraulic loadings.The experimental results are as follows： ①When artificial wastewater is used as influent,the time needed for film formation of rubble filler is 20 d at the hydraulic loading of 10 cm^3/（cm^2·d）,it is shorter than that of ceramist;②When artificial wastewater is used as influent,COD removal of ceramist and rubble fillers is 86.2% and 84.6% respectively at the hydraulic loading of 15 cm^3/（cm^2·d）,compared to 78.2% and 75.2% at a higher loading of 20 cm^3/（cm^2·d）;③ Under different influent water qualities,COD removal rates are different;④In the above tests,COD removal of ceramist is 1.6%-8.6% higher than that of rubble.
出处
《工业安全与环保》
北大核心
2011年第4期12-14,共3页
Industrial Safety and Environmental Protection
关键词
土地处理
挂膜
水力负荷
陶粒
碎石
land treatment biofilm hydraulic loading ceramist rubble
