淤塞密度指数

淤塞密度指数（Silt Density Index，简称SDI）是测定在标准压力和标准时间间隔内，一定体积的水样通过一特定微孔膜滤器（例如用于逆渗透系统者）的阻塞率。它表征水中胶体物和悬浮物含量的多少。

淤塞密度指数测试有助预测滤膜表面何时会被微粒壅塞，从而采取预防措施。

单词	Silt density index
释义	Silt density index 中文百科淤塞密度指数淤塞密度指数（Silt Density Index，简称SDI）是测定在标准压力和标准时间间隔内，一定体积的水样通过一特定微孔膜滤器（例如用于逆渗透系统者）的阻塞率。它表征水中胶体物和悬浮物含量的多少。淤塞密度指数测试有助预测滤膜表面何时会被微粒壅塞，从而采取预防措施。英语百科 Silt density index 淤塞密度指数 The silt density index is a measure for the fouling capacity of water in reverse osmosis systems. The test measures the rate at which a 0.45-micrometre filter is plugged when subjected to a constant water pressure of 206.8 kPa (30 psi). The SDI gives the percent drop per minute in the flow rate of the water through the filter, averaged over a period of time such as 15 minutes.
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Silt density index

淤塞密度指数

Silt density index 淤塞密度指数