二种柱式气浮法处理纸浆废水的试验研究

Experimental Study on Two Type Air Flotation Columns Treating Paper Pulp Wastewater

采用分散空气法和加压溶气法两种充填式气浮柱处理纸浆废水,通过对工艺参数和结构参数等因素的考察,表明这两种工艺对降低废水化学需氧量CODCr和悬浮物含量SS,提高浮渣污泥固含量都具有明显的效果,且加压溶气法的处理性能优于分散空气法。加压溶气法对SS的去除率达98%,CODCr、BOD5的去除率分别为84.3%和79.4%。

Paper pulp wastewater can be treated by dispersed air flotation or by pressurized dissolved air flotation method.From the investigations in process and structure parameters,both methods show remarkable effects in reducing CODCr and SS and increasing the solid content of floating slag.Especially pressurized dissolved air flotation method functions better which can reduce 98%of SS,84.3%of COD Cr and 79.4%of BOD5.