This article recommends the application of diatomite filter aid to water filtration abroad and its recent domestic research.
介绍了国外硅藻土助滤剂在过滤水中的应用和近年国内研究工作概况。
At present, time period of filters are mainly used for starting up the backwashing instruction to control filter backwashing automatically in most of domestic water plants.
目前，国内大部分水厂的滤池自动反冲洗控制主要通过滤池工作的时间周期来启动反冲洗指令。
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