摘要
从活性污泥及土壤中筛选出一株产絮凝剂的霉菌——黑曲霉,该菌所产絮凝剂对高岭土的絮凝活性可达90％以上。黑曲霉的培养实验表明,其适宜生长的碳源为葡萄糖或蔗糖,氮源为豆芽汁或马铃薯汁;适宜的初始pH值为6.0;生长与分泌絮凝剂的合适温度范围为30～34℃;受培养温度的影响,絮凝效果最好的时间在50-60h。絮凝实验表明,用培养液处理高岭土悬浊液时有明显的絮凝效果,当废水pH值为6.0左右时,絮凝效果最好。
In the study, a flocculent-producing strain, As-pergillus niger was isolated from activated sludge and soil. Flocculation could reach more than 90% for ka-olinite suspension. Culturing experiment showed that the optimum carbon source was sucrose or glucose, and the nitrogen sources were bean sprout or potato. The optimum pH was 6.0, the optimum growing and flocculent-producing temperature range was 30-34℃, and affected by the temperature, time of best performance was 50-60h after culturing. The flocculating experiment showed that the flocculating efficiency was prominent when culturing liquid was used to flocculate kaolinite suspension. And at pH6.0 of wastewater, the best performance could be reached.
出处
《上海环境科学》
CAS
CSSCI
CSCD
北大核心
2002年第8期459-462,共4页
Shanghai Environmental Sciences
基金
广东省自然科学基金资助项目
编号 980897
国务院侨办重点学科基金资助项目
编号 939711
