The amount and size distribution of particles in the effluent from a sand filter or from activated carbon filtration in a drinking water treatment plant were investigated.

结合水厂实际水处理工艺及活性炭深度处理装置，试验研究砂滤池和活性炭滤柱出水中颗粒物数量变化及粒径分布规律。

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Using Pearl River source water as raw water, the contaminant removal effect of carbon and sand filter after the biological aerated filter(BAF)pretreatment process was investigated.

以珠江广州段源水为处理对象，考察了曝气生物滤池（BAF）预处理工艺后炭砂滤池的除污效果。

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Pretreatment system generally includes the original pumps, dosing devices, quartz sand filter, activated carbon filter, precision filter and so on.

预处理系统一般包括原水泵、加药装置、石英砂过滤器、活性炭过滤器、精密过滤器等。

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