Pilot-scale test was made on treatment of secondary effluent from a wastewater treatment plant by using combined velocity-changeable bio-filter (CVF) for determination of optimum operating conditions.

• 为确定复合变速生物滤池的最佳运行工况,进行了处理污水厂二级出水的中试,滤池采用酶促填料和组合填料,考察了四种流量水平下对有机物的去除效果。