An RO membrane is expensive, and it fails in predictable ways. Calcium carbonate scale forms on the last elements when the recovery is pushed too high for the feed water chemistry. Silica polymerises on the membrane surface and cannot be removed with a standard acid CIP. Biofilm builds up on the feed spacer and raises the differential pressure across the train. Colloidal clay and silt from a borewell feed deposit on the first elements and drop the flux. Innovacorp manufactures and supplies RO membrane chemicals for Nepal plants — antiscalants, acidic and alkaline CIP cleaners, non-oxidizing biocides and colloidal dispersants — selected on the feed water chemistry and the membrane type, not on a fixed catalogue. The working conversation starts with your feed water analysis, not a fixed dose chart.

The Fouling Problems a Nepal RO Plant Faces

Not every fouling problem is the same, and not every chemical fixes every problem:

• Calcium carbonate scale: Forms on the last elements when the concentration factor exceeds the solubility. Handled by a threshold-inhibition antiscalant dosed into the feed.
• Silica scale: Polymerises on the membrane surface at high recovery and cannot be removed with a standard acid CIP. Needs a silica-specific antiscalant and a careful recovery limit.
• Biofilm: Builds up on the feed spacer and the membrane surface. Raises the differential pressure, drops the flux, and creates a nutrient base for further fouling. Handled by a biocide programme and an alkaline CIP.
• Colloidal and particulate fouling: Clay, silt and metal hydroxides from a borewell or surface water feed. Handled by a colloidal dispersant and by pre-treatment.

A single antiscalant that handles calcium carbonate may not handle silica. That is why the grade selection is set on the feed water analysis — silica, calcium, barium, strontium, and the Langelier Saturation Index (LSI) — not on a fixed "RO antiscalant" label.

The Product Families We Manufacture and Supply to Nepal

Product family	What it does	Where it is used
RO antiscalant	Threshold inhibition of calcium carbonate, sulfate and silica scale on the membrane surface.	Feed water line, dosed continuously.
Acidic CIP cleaner	Removes mineral scale and metal hydroxides from the membrane surface.	Periodic CIP, when the differential pressure or the salt passage rises.
Alkaline CIP cleaner	Removes organic and biological fouling from the feed spacer and the membrane.	Periodic CIP, often preceded by an alkaline clean and followed by an acid clean.
Non-oxidizing biocide	Controls microbial growth in the feed and the pre-treatment train without attacking the membrane.	Pre-treatment, dosed ahead of the membrane.
Colloidal dispersant	Keeps clay, silt and metal hydroxides in suspension so they leave in the reject.	Feed water line, where the feed carries colloidal load.

The product mix and the dose are confirmed after a feed water analysis. We do not recommend a fixed package — the feed chemistry and the membrane type decide.

How Each Product Family Works

• Antiscalant: Polymer-based threshold inhibition — the polymer interferes with crystal nucleation and growth at sub-stoichiometric doses, so the scale stays in solution and leaves with the concentrate. Silica control needs a different polymer from carbonate control.
• Acidic CIP: Low-pH chemistry that dissolves the mineral scale (carbonate, sulfate, metal hydroxides) from the membrane surface. The contact time and temperature are set carefully to protect the membrane.
• Alkaline CIP: High-pH chemistry with surfactants that lifts organic and biological fouling from the feed spacer and the membrane surface.
• Non-oxidizing biocide: A different mode of action from chlorine — usually a specific metabolic target — that controls microbial growth without the oxidative damage that chlorine causes to polyamide membranes.
• Colloidal dispersant: A surfactant-based chemistry that keeps fine particles in suspension and prevents them from depositing on the membrane surface.

Where Each Product Fits in a Nepal Plant

• Boiler feed water RO: Antiscalant for the feed, CIP cleaners for the periodic clean. The boiler water treatment chemicals page covers the boiler side of the programme, which is a separate treatment step downstream of the RO.
• Pharmaceutical and food-grade RO: Antiscalant and CIP cleaners matched to the water quality requirement of the process.
• Power plant DM water: Antiscalant and CIP for the RO train ahead of the DM plant.
• Industrial process water: Antiscalant, CIP and biocide for the general industrial RO systems.
• ZLD and wastewater recovery: Antiscalant, dispersant and biocide for the high-fouling RO systems in wastewater recovery.

Specifications

Grade-wise technical data — appearance, active content, pH, density and shelf life — is shared as a TDS on request for the specific product under consideration. Final specification is confirmed against the product TDS before dispatch.

Dosage and Feed Point

Dose is set on the feed water chemistry and the system recovery, not a fixed figure per cubic metre. Working reference ranges for Nepal plants:

• Antiscalant: 2–10 ppm in the feed water, adjusted to the scaling potential at your recovery and the TDS for the grade.
• Acidic CIP: Dilution and contact time set on the fouling type and the membrane manufacturer's guideline.
• Alkaline CIP: Same approach — the dilution, temperature and contact time follow the membrane manufacturer's CIP guideline.
• Non-oxidizing biocide: Set on the microbial load in the feed, dosed ahead of the membrane.
• Colloidal dispersant: Set on the colloidal load in the feed water.

These are starting ranges. The working dose is confirmed from your feed water analysis and the TDS for the product. Our team reviews the dosing plan with your plant engineer before the first charge.

Packing

• 35 kg HDPE carboys for liquid grades (standard)
• 200 L HDPE drums for liquid grades
• 25 kg HDPE bags for powdered grades (where applicable)

Standard industrial packing; pack sizes on request.

Support from Feed Analysis to First Charge

For industrial RO plants in Nepal — boiler feed, pharma, food-grade, power plant DM and wastewater recovery — we review your feed water analysis, go through the product selection with your plant engineer, and review the dosing plan before the first charge. If the differential pressure, flux or salt passage starts drifting, call us — we will look at the operating data with you. The industrial biocides page covers the wider microbial control programme, which is linked to the biofilm side of membrane fouling. TDS is shared on request.

Frequently Asked Questions

Which RO membrane chemicals does Innovacorp make for Nepal plants?

Innovacorp manufactures RO antiscalants, acidic and alkaline CIP cleaners, non-oxidizing biocides and colloidal dispersants for industrial RO plants in Nepal. The product mix is set after a feed water analysis, not on a fixed package.

How is an RO antiscalant selected for high-silica feed water?

Silica is a different problem from calcium carbonate — a standard antiscalant that handles carbonate scale may not hold silica in suspension at the same recovery. The antiscalant selection depends on the silica concentration, the recovery rate and the membrane type. We confirm the grade after a feed water analysis and a projection of the scaling potential at your recovery.

What is the difference between an antiscalant and a CIP cleaner?

An antiscalant is dosed continuously into the feed water to prevent scale from forming on the membrane surface. A CIP (Clean-In-Place) cleaner is used periodically to remove the fouling that has already formed — acidic cleaners for mineral scale, alkaline cleaners for organic and biological fouling. The two are used together in a membrane maintenance programme, not as alternatives.

How should RO membrane chemicals be stored at a Nepal plant?

Store in the original container, in a cool, dry, ventilated area away from direct sunlight and incompatible chemicals. Keep the lid tight when not in use and follow the handling guidance on the TDS. Do not mix with other chemicals in the storage area.

Share Your Feed Water Analysis

Send us your feed water analysis — silica, calcium, barium, strontium, LSI and the target recovery — along with the membrane type and the current CIP cycle, and we will suggest the product mix and a working dose range for your RO plant. Call +91-9312871070.