And then a performance test of four kinds of immobilized beads is performed using dinning-room wastewater as test water. The results of test show: the bead that contains powder active carbon has dual performance of entrapment and adsorption.

• 继而以餐厅废水为实验用水对所制备的4种固定化小球进行了性能实验；结果表明:含活性炭配方的固定化活性污泥小球兼有包埋法和吸附法的双重特性.