Insights

Reverse osmosis

How industrial RO plants work, how to size one, and how to keep membranes performing for longer.

A bar showing the running cost of an illustrative 200 m³ per day RO plant: about ₹13.2 per m³, of which power is ₹8.0, operator ₹2.0, chemicals ₹1.5, membranes ₹1.2 and cartridges ₹0.5. Over 10 years, about ₹96 lakh.

How much does an industrial RO plant cost to run?

The purchase price is the smaller number. Power, chemicals, membranes and labour decide what an RO plant really costs, and how to compare quotes on them.

A cross-section of an RO membrane showing four threats on the feed side: scale crystals, a biofilm, colloids and silt, and chlorine damage, each with its fix.

Why RO membranes fail early, and how to make them last

RO membranes should last years. When they don't, the cause is almost always scaling, fouling or chlorine, and the warning signs show up in the plant's readings long before the membranes die.

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