3M测试片法在膜法水处理技术中的应用

Application of 3M Petrifilm Method in Membrane Technology for Water Treatment

采用3M测试片法测定膜法水处理系统的细菌总数,找出双膜系统的微生物污染环节,并采用正交实验筛选出适宜的杀菌剂种类、杀菌剂加入量和杀菌时间。实验结果表明:3M测试片法的测定结果数据准确可靠,且操作简便,节省时间,可以替代常规的平皿培养法用于评价膜的微生物污染情况;某炼化公司双膜系统的反渗透膜已受到微生物的污染,确定的适宜杀菌条件为杀菌剂Trsea 380、杀菌剂加入量50 mg/L、杀菌时间2.0 h,在此条件下杀菌率可达100%。

3M Petrifilm was used to determine the total bacterial count in membrane system for water treatment,find out the microbial fouling sites in double membrane system,and screen suitable bactericide,dosage and sterilization time through orthogonal tests.The experimental results show that 3M Petrifilm mothod is accurate,simple and rapid,which can replace the conventional plate culture method in membrane microbial fouling evaluation.The reverse osmosis membrane in the double membrane system of a refining and chemical company was fouled by microorganism,and the suitable sterilization conditions were determined as follows：bactericide Trsea 380,bactericide dosage 50 mg/L,sterilization time 2.0 h.Under these conditions,the sterilization rate isl00％.