混凝与气浮结合处理制革废水的实践

近年来随着制革工业的发展,制革废水的排放造成了严重的水体污染,同时废水中含有的有毒有害物质对人体健康也产生了极大的威胁。如何有效降低废水中的有毒有害物质十分必要。实践证明:在生化处理前采用混凝沉淀+气浮工艺进行脱硫和除铬,去除率达98%,CODCr的去除率达到75%,BOD5去除率达到60%,大大降低后续处理的负荷,最终出水达到地方排放标准。

Coagulation and Flotation with the Practice of Tannery Wastewater Treatment

In recent years, with the leather industry, Tannery waste water resulted in serious water pollution, At the same time the toxic waste water containing hazardous substances on human health also had a great threat. How to effectively reduce the toxic and harmful substances in waste water is necessary. Practice has proved that： In the bio-chemical treatment before the use of coagulation and sedimentation ＋ flotation process for desulfurization and in addition to chromium, Removal rate reached 98 %, CODcr removal rate reached 75 %, BOD5 removal efficiency reached 60 %, The follow-up treatment significantly reduced the load. The final effluent meet local discharge standards.