Pretreatment
Pretreatment: How to Reduce SDI & Turbidity to Protect Membranes
A simple guide to pretreatment options and their effect on fouling and CIP.
What is SDI?
SDI indicates fouling potential. Lower SDI extends membrane life and reduces CIP frequency.
Common solutions
- Sand + carbon filters
- UF
- Chemical dosing (coagulant)
Last updated: 2026-05-11T10:55:06.889Z
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