Biological activated carbon filtration and slow sand filtration are used to study the rural potable water treatment.
采用生物活性炭滤-砂慢滤工艺对农村饮水处理进行了试验研究。
The principles, processes, costs and (effects) of different disinfection techniques were summarized, especially a new method of slow sand filtration was introduced.
该文综述了国内外营养液消毒方法、原理、成本及应用效果，重点介绍了营养液消毒新技术-慢砂过滤。
As the filtration flux of the ordinary cross flow membrane filtration is very slow, the cross flow membrane filtration with electrastatic field is studied.
针对普通十字流膜滤中膜滤速率低下问题，试验研究了附加电场下的十字流膜滤。
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