制革污水预曝气处理效果研究

Study on the Effect of Pre Aeration in Tanyard Wastewater

制革污水采用预曝气处理后，可大大提高初沉池沉淀效果。制革污水在空气量为０．５ｍ３／ｍ３·ｍｉｎ条件下曝气１０ｈ，可以使初沉池对污水中ＢＯＤ、ＳＳ、硫化物及总铬的去除效果分别提高约１０％、２５％、１０％和１５％。

By pre aeration in tanyard wastewater, the effect of primary settling improves obviously. The study shows that, when aerating 10 h in 0 5m 3/m 3·min air in tanyard wastewater, the treatment effect of BOD, SS, sulfide and total chromium in primary settling will be increased about 10%, 25%, 10% and 15% respectively.