C. Conventional wastewaterpurification systems have not been fully successful in killing bacteria at cold temperatures.
传统的废水净化系统在低温下并不能完全成功地杀灭细菌。
2
All the practices show that UF is very successful for treating emulsion and oil contaminated wastewater in Cold Rolling Mill and benefits of wastewaterpurification have been obtained.
实践证明：采用超滤法处理冷轧厂含油废水及乳化液废水，能达到污水净化的目标。
3
In this paper, effect of the amounts of biology-ball was studied on the wastewaterpurification in the Plant-biofilm Oxidation Ditch(PBFOD)by home-made biology-ball putted in the system.