摘要
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。
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.
出处
《广东化工》
CAS
2010年第5期180-181,共2页
Guangdong Chemical Industry
关键词
制革废水
混凝沉淀
气浮
tannerywastewater
coagulating sedimentation
flotation
