【作者】 魏炜； 马振林； 陈令薇；

【Author】 Wei Wei;Ma Zhenlin;Chen Lingwei;Shenyang Jianzhu University;

【机构】 沈阳建筑大学；

【摘要】 微生物絮凝剂有安全高效的实用特点,本研究以实验室活性污泥作为菌种来源,通过稀释涂布法和平板划线分离法,分离纯化出24株微生物絮凝剂产生菌,其中菌株M24的絮凝活性最高,经鉴定,该菌为琼氏不动杆菌。通过正交试验确定产絮菌M24所产生的微生物絮凝剂对高岭土悬液的最佳去除条件如下:絮凝剂投加量为8 m L、p H值为5、助凝剂Ca Cl2的投加量为1 m L、絮凝时间为0.5 h,在此条件下对高岭土的去除效果可达到90.32%。更多还原

【Abstract】 Microbial flocculant has the characteristics of safety and high efficiency. In this study,24 strains of microbial flocculant producing bacteria were isolated and purified by dilution coating method and plate line separation method,among which M24 strain showed the highest flocculant activity. After identification,the bacteria was Acinetobacter Jone. Through orthogonal test,the optimal removal conditions of microbial flocculant produced by flocculant M24 for kaolin suspension were determined as follows: the addition amount of flocculant was 8 ml,the p H value was 5,the addition amount of coagulant aid CaCl2 was 1 ml,and the flocculation time was 0. 5 h. Under such conditions,the removal effect of kaolin on kaolin could reach90. 32%.更多还原