外循环三相流化床污水处理特性的研究  

Characterization of wastewater treatment using external circulating three-phase bio-fluidized bed

作　　者：焦伟堂[1] 冯旭东[1] 李丽 

机构地区：[1]北京工商大学化学与环境工程学院,北京100037 [2]银河纸业集团,山东临清252600

出　　处：《环境污染与防治》2005年第3期186-189,共4页Environmental Pollution & Control

摘　　要：采用三相外循环生物流化床处理生活污水。该设备包含好氧区和缺氧区,可获得足够的停留时间造成缺氧条件,能保证有效去除NH3N。实验在室温下进行,进水条件pH为7～8,CODCr为286～656mg/L,NH3N为10～51mg/L。结果显示,控制水力停留时间在3h为宜,最佳通气量为0.09m3/h,此时CODCr和NH3N的去除率分别达91%和96.6%,有较好的处理效果。同时实验确定了最佳膜厚为145μm。An innovative apparatus-external circulating three-phase biological fluidized bed was used to treat an organic wastewater. This apparatus includes both aerobic zone and anoxic zone. As it has enough retention time for anoxia process, a satisfactory removal of NH_3-N can be obtained under the conditions of CODcr and pH in influents of 286～656 mg/L and 7~8 and NH_3-N of 10～51 mg/L at room temperature. The influence of the process parameter of apparatus on the treatment was studied. The results showed that the optimum conditions were HRT 3 h and ventilation quantity 0.09 m3/h. The removal of CODcr and NH_3-N were 91% and 96.6% respectively. The best thickness of the biofilm was found to be 145 μm.

关 键 词：外循环 三相流化床 污水处理 NH3-N 水力停留时间 生物流化床 CODCR 生活污水 缺氧条件 进水条件 CODC 处理效果 实验确定 好氧区 通气量 去除率 最佳 pH 

分 类 号：X703[环境科学与工程—环境工程] TS294.3[轻工技术与工程—农产品加工及贮藏工程]