微生物絮凝剂有效真菌的筛选  

Screening and Culture of Fungi for Microbial Flocculant

作　　者：郑海洪[1] 李建波[1] 刘畅[1] 廖礼[1] 

机构地区：[1]西南石油大学,四川成都610500

出　　处：《污染防治技术》2007年第5期24-26,共3页Pollution Control Technology

摘　　要：通过真菌培养基(马铃薯培养基),对旱田土壤和活性污泥中的微生物进行筛选分离,得到3株絮凝率超过67%的菌株,其中絮凝率超过75%的高絮凝活性菌株1株——MZ52。将MZ52在产絮凝剂的培养基中进行发酵培养后,对1 000 mg/L高岭土悬浮液絮凝,得出MZ52菌产絮凝剂最佳培养条件,分别为摇床转速160 r/min,培养时间90 h,初始pH值为8.0,培养温度为40℃。Three strains with flocculating rate above 60% were obtained by screening with fungus culture （potato medium） isolated from upland soil and activated sludge, in which a strain, MZ52, showed a even higher activity with a rate found to be 75%. After fermentation cultured, MZ52 was added into suspended kaolin liquid with a concentration of 1 000 mg/L. Results indicated that when the rotating speed, time, pH and temperature for culture were 160 r/min, 90 h, 8.0 and 40℃respectively, the MZ52 could be cultured under an optimum condition.

关 键 词：微生物絮凝剂 絮凝率 筛选 培养条件 

分 类 号：X172[环境科学与工程—环境科学] Q93-331[生物学—微生物学]