摘要
利用混凝剂对皮革废水进行处理 ,包括综合废水、铬鞣液及加碱处理后铬鞣液。对三种无机混凝剂和十种有机混凝剂进行了初步筛选。结果表明 ,混凝处理对三种废水均有一定作用 ,最适用于综合废水 ,而铬鞣液直接混凝效果不佳。最佳混凝剂为PAM(分子量 90 0× 10 4～ 12 0 0× 10 4) 4 0mg/L +Al2 (SO4) 3 10 0 0mg/L ,色度能完全去除 ,对SS、COD、Cr的去除率也较高。
Coagulants are used to treat Cr-contained tannery effluents,including the integrated wastewater,and tanning wastewater with and without alkali pretreatment.Three inorganic and ten organic coagulants are tested.The results show that coagulation reduces pollution for all three types of effluents.The method suits the integrated discharge best but was improper for the tanning effluent.The optimal chemical is PAM(M.W.9×10~4～12×10~4)40mg/L+Al_2(SO_4)_31 000mg/L with very effective removal of SS,color,COD and chromium.
出处
《新疆环境保护》
2003年第4期29-32,共4页
Environmental Protection of Xinjiang
基金
AsianRegionalResearchProgrammeonEnvi ronm entalTechnology资助。
