摘要
从活性污泥中筛选出一株能产高效絮凝剂的芽孢杆菌,对该菌产生的微生物絮凝剂进行了絮凝条件及废水絮凝实验研究。结果表明,微生物絮凝剂最佳絮凝条件为:原水pH值7.0以上;助凝剂CaCl2(1%浓度)适宜投加量为5.0%;发酵液的适宜投加量为0.2%;发酵液较好的离心条件为n=4 000转/min,t=30min。在最佳絮凝条件下,该菌产生的微生物絮凝剂对多种废水净化效果明显。
One strain of Bacillus SP. from the activated sludge is able to produce a stable and efficient bioflocculation. The flocculation properties and application of this microbial flocculants in wastewater treatment are studied. The results show that the optimum flocculation can be reached in conditions as follows： above pH 7.0, the dosage of coagulation aid CaCl2 is 5.0 %, the flocculants dosage is 0.2 %, and the centrifugal condition of flocculants broth is 4 000 r/min and last for 30 min. In the optimum flocculation condition the strain boasts obvious coagulation efficiency in wastewater treatment with produced bio-flocculation.
出处
《中国工程科学》
2009年第2期88-91,共4页
Strategic Study of CAE
关键词
微生物絮凝剂
絮凝条件
焦化废水净化
microbial flocculants
flocculation conditions
coking wastewater treatment
