煤泥水生物与非生物联合絮凝絮体过滤比阻的试验研究  

Investigation of filtration specific resistance of coal slurry flocs with microbial and non-biological flocculants

作　　者：张东晨[1] 戴雯[1] 常飞[1] 冀敏敏 

机构地区：[1]安徽理工大学材料科学与工程学院,安徽淮南232001

出　　处：《中国矿业大学学报》2017年第3期614-621,共8页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(51274012)

摘　　要：为了研究生物与非生物絮凝剂对煤泥水絮体助虑效果的影响,以过滤比阻为评价指标,采用正交试验法对枯草芽孢杆菌、黄孢原毛平革菌与聚丙烯酰胺絮凝剂联合絮凝煤泥水时絮体的过滤特性进行了研究.结果表明:枯草芽孢杆菌、黄孢原毛平革菌和聚丙烯酰胺絮凝剂都可以助滤煤泥水,单一添加时絮体的过滤比阻分别为2.683 1×109,2.040 6×109,2.137 3×109cm/g.生物与非生物絮凝剂联合絮凝时助滤效果更好,且复配组合不同,各因素对试验结果影响有明显不同.最优试验条件下,枯草芽孢杆菌与聚丙烯酰胺联合絮凝煤泥水絮体过滤比阻为0.713 9×109 cm/g,起主要作用的是枯草芽孢杆菌;黄孢原毛平革菌与聚丙烯酰胺联合絮凝煤泥水絮体过滤比阻为0.891 7×109 cm/g,起主要作用的是聚丙烯酰胺.To study the effect of microbial and non-biological flocculants on the filtration characteristics of coal slurry flocs,filtration specific resistance of coal slurry was taken as an evaluation index,and the orthogonal test method was applied to study the filtration characteristics of coal slurry flocs adding Bacillus subtilis,Phanerochaete chrysosporium and Polyacrylamide（PAM）.The results show that all the three flocculants can improve the filtration characteristics of coal slurry flocs.When added separately,the filtration specific resistance of flocs are 2.683 1×10^9,2.040 6×10^9 and 2.137 3×10^9 cm/g respectively.However,better effects can be achieved when the microbial and non-biological flocculants are jointly added in coal slurry.Compounds with different flocculants would lead to significantly different experiment results.Under optimum conditions,the minimum filtration specific resistance of coal slurry compound adding Bacillus subtilis and PAM is 0.713 9×10^9 cm/g,which is the maior contribution of Bacillus subtilis;the minimum filtration specific resistance of coal slurry compound adding Phanerochaete chrysosporium and PAM is 0.891 7×109 cm/g,with Phanerochaete chrysosporium playing a key role.

关 键 词：煤泥水 枯草芽孢杆菌 黄孢原毛平革菌 聚丙烯酰胺 过滤比阻 

分 类 号：TD926.2[矿业工程—选矿]