制革厂废水处理工艺的改进

Improvements on Techincs of Waste Water from Tannery

制革厂废水中不仅含有大量的油脂 ,皮渣和染料等有机物 ,还含有Cr6+ 、Cr3 + 、S2 -等无机离子 ,针对其污染物特性我们提出了一种新的处理工艺即 :絮凝沉淀→填料塔→二沉池 ,处理后的废水 ,其Cr、S、SS、COD。

In the waste water from tannery, there are not only organic materials like fat, leather dregs, and dye, but also inorgainc ions like Cr 6+ ,Cr 3+ and S 2+ .According to their properties, we have proposed a new technics to treat waste water, i. e.,wadding precipitate→stuffing tower→precipitation tank. All indexes such as Cr, S,SS,COD,meet the state sluice standard.