【摘要】 膨胀珍珠岩是以珍珠岩为原料煅烧膨胀制成的 ,具有容重小、空隙率大等特点。根据膨胀珍珠岩颗粒和水力学特性 ,可用作水处理过滤池滤料。试验表明 ,将其用作上升流直接过滤池的滤料 ,具有滤速大、截污能力强、反冲洗耗水小、运行周期长的特点 ,过滤效果较好 ,是替代现有滤料的良好材料 ,应用前景广阔。更多还原

【Abstract】 Swelled perlite is produced from calcined perlite. It has characteristics of little volumetric weight and large porosity. Swelled perlite can use as materials of wastewater disposal with its characteristic of granule and waterpower. Experimental result indicted that it has large filtrating velocity, high ability of removing matter suspending, little consuming water to wash in reverse and long life period as filtrating materials in rising flow at direct filtrating pond and make great progress. Swelled perlite is good materials to substitute for tradition filtrating materials and has large application prospect in water disposal.更多还原