By pre aeration in tanyard wastewater, the effect of primary settling improves obviously.
制革污水采用预曝气处理后，可大大提高初沉池沉淀效果。
2
He used to lay drunk with the hogs in the tanyard, but he hain't been seen in these parts for a year or more.
他老是喝得醉醺醺的，在鞣皮工场的猪圈里睡。在这一带，有一年多见不到他这个人影了。
3
This paper has introduced a serious engineering accident of a tanyard, as well its detection and reason analysis. A proper treatment scheme has been proposed according to the engineering accident.