Why does increasing TDS affect UF?

Question

Why does increasing TDS in feed water cause increasing differential pressure in UF?
Thank you for your help.

Pieter Erasmus · Answer

Hi, This is mainly due to the particulate silica based material increase, measured as Silt Density Index (SDI ) Slight changes in turbidity will quickly block any UF system. Turbidity usually increase with increase in TDS.

Ali Salmani · Answer

I agree with Verma, by harness increasing and interaction with base CEB (Caustic), scales will be formed.

Dr. Avnish Verma · Answer

Higher TDS means higher Hardness. 
It can be form scale inside fibres, thus cause earlier choking.

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