By pre aeration in tanyard wastewater, the effect of primary settling improves obviously.

制革采用预曝气处后，可大大提高初沉池沉淀效。

It is proved effective that deep well aeration biological treat propylene technology is used to treat propylene epoxide saponated sewage.

证明,深井曝气生处技术处环氧丙烷皂是行之有效的。

The experimentation inspected the infection of hydraulic load, organic load, ammonic nitrogen load, the ratio of gas and water, the height of filling to removal efficiency of COD and ammonic nitrogen.

本试验以自配生活为试验用,考察了力负荷、进有机负荷和氨氮负荷、气比、填料层高度对曝气生物滤池处COD和氨氮效的影响。