安徽某大型矿山砂石骨料冲洗废水絮凝沉降特性研究  

Study on Flocculation and Sedimentation Characteristics of Sand Aggregate Washing Wastewater in a Large Mine in Anhui

作　　者：张康财 周浩 李杰 李昭旺 何湛 ZHANG Kangcai;ZHOU Hao;LI Jie;LI Zhaowang;HE Zhan(Powerchina Anhui Changjiu Advanced Materials Co.,Ltd.;Changsha Institute of Mining Research Co.,Ltd.)

机构地区：[1]中电建安徽长九新材料股份有限公司 [2]长沙矿山研究院有限责任公司

出　　处：《现代矿业》2024年第1期207-212,共6页Modern Mining

摘　　要：为研究安徽某大型矿山砂石骨料冲洗废水中尾泥絮凝沉降特性,针对该矿山砂石骨料冲洗废水处理系统中的尾泥沉降速度慢、溢流水浑浊、泥饼含水率高等问题,进行了试验室静态浓密试验研究,并采用SPSS软件对试验结果开展了方差分析。研究结果表明:在该尾泥絮凝沉降试验中,使用阴离子聚丙烯酰胺的絮凝沉降效果要优于使用非离子性聚丙烯酰胺和阳离子性聚丙烯酰胺;使用1600万分子量的阴离子聚丙烯酰胺,在其用量60 g/t、尾泥进料平均浓度7.2%时,溢流水平均SS为69.94 mg/L,滤饼平均含水率为17.89%,底流平均浓度为49.7%,满足溢流水SS小于100mg/L和滤饼含水率18%左右的工业生产要求。该研究成果为絮凝剂在该矿山砂石骨料冲洗废水处理系统中的工业应用提供了依据,并可为其他同类矿山废水的处理提供经验借鉴。In order to study the flocculation and sedimentation characteristics of tailings mud in a large-scale mine sand and gravel aggregate washing wastewater in Anhui Province,aiming at the problems of slow sedimentation rate of tailings mud,turbidity of overflow water and high water content of mud cake in the treatment system of sand and gravel aggregate washing wastewater in the mine,the static thickening test in the laboratory was carried out,and the variance analysis of the test results was carried out by SPSS soft⁃ware.The results show that the flocculation sedimentation effect of anionic polyacrylamide is better than that of non-ionic polyacrylamide and cationic polyacrylamide in the flocculation sedimentation test of the tail mud.Using 16 million molecular weight anionic polyacrylamide,when the dosage is 60 g/t and the average concentration of tail mud feed is 7.2%,the overflow level SS is 69.94 mg/L,the average moisture content of filter cake is 17.89%,and the average concentration of underflow is 49.7%,which meets the industrial pro⁃duction requirements of overflow water SS less than 100 mg/L and filter cake moisture content of about 18%.The research results provide a basis for the industrial application of flocculant in the treatment system of sand aggregate washing wastewater in this mine,and can provide experience for the treatment of other simi⁃lar mine wastewater.

关 键 词：废水 絮凝剂 沉降 工业应用 

分 类 号：X75[环境科学与工程—环境工程]