Insights

Notes from the plant room.

Practical writing on industrial water treatment — sizing, recovery, effluent and the decisions behind a reliable plant.

Zero Liquid Discharge: from compliance cost to circular asset
26 Jun 2026 · EWI Process Team

Zero Liquid Discharge: from compliance cost to circular asset

ZLD has shifted from an optional environmental strategy to a condition of operating in India. Treated the right way, the same plant that satisfies the regulator can also pay part of its own way back.

India's industrial water reckoning: why reuse is now a board-level risk
22 Jun 2026 · EWI Process Team

India's industrial water reckoning: why reuse is now a board-level risk

Water demand in India is on track to outrun supply within this decade. For industry, that turns reuse from an environmental nicety into a question of whether a plant can keep running at all.

The energy line of an RO plant: cutting the kWh per cubic metre
17 Jun 2026 · EWI Process Team

The energy line of an RO plant: cutting the kWh per cubic metre

In a reverse-osmosis plant, the high-pressure pump is where the electricity bill is written. Feed salinity, recovery and one piece of recovery hardware decide most of it.

Reading a brackish-water feed: recovery, TDS and the 2:1 array
12 Jun 2026 · EWI Process Team

Reading a brackish-water feed: recovery, TDS and the 2:1 array

Every RO design starts with a number the borewell hands you — feed TDS — and a target you set against it. The relationship between the two shapes the whole skid.

PFAS and the next wave of water regulation
6 Jun 2026 · EWI Process Team

PFAS and the next wave of water regulation

The 'forever chemicals' have moved from research papers to enforceable drinking-water limits. The technologies that remove them are ones the water industry already knows well.

Textile effluent in Gujarat: colour, TDS and the road to ZLD
31 May 2026 · EWI Process Team

Textile effluent in Gujarat: colour, TDS and the road to ZLD

Dye-house effluent is among the hardest industrial water to treat — and among the most tightly regulated. In Gujarat's textile clusters, ZLD is now the cost of doing business.

Digital water: what CPCB's OCEMS mandate means for your plant
24 May 2026 · EWI Process Team

Digital water: what CPCB's OCEMS mandate means for your plant

Real-time effluent data now flows straight from the outfall to the regulator's servers. For many industries, online monitoring has become as much a part of the plant as the treatment train itself.

Membrane lifecycle: fouling, CIP and getting years out of an element
17 May 2026 · EWI Process Team

Membrane lifecycle: fouling, CIP and getting years out of an element

Membranes are the consumable at the heart of an RO plant. How long they last — and how much energy they cost while they do — is decided by how you read fouling and time your cleans.

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