RO membrane chemicals for brackish water and seawater plants.
Eight treatments, four for each membrane type: antiscalant, acid cleaner, alkaline cleaner and biocide. Compatible with polyamide RO membranes. Made in our own plants in Fujairah and Athens.
What are you treating?
Why it matters
A fouled membrane costs you before it fails.
Scale and biofilm build up on the membrane long before salt rejection drops. Permeate flow falls, pressure rises and the high-pressure pump works harder. Clean when normalised permeate flow drops more than 10 percent.
Scale
Calcium carbonate and sulphate precipitate as the brine concentrates in the last elements.
Metal fouling
Iron and other metal deposits coat the membrane and need an acid clean.
Organic fouling
Oils, silt and organic matter blind the membrane and need an alkaline clean.
Biofilm
Bacteria form a film that raises differential pressure and shortens cleaning intervals.
Sheran manufactures eight RO membrane treatments at its own plants in Fujairah and Athens.
The range
Eight treatments. Brackish water or seawater.
Showing 8 of 8
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Brackish water RO (BWRO)
Brackish water RO (BWRO)
SC-BWRO-501 Antiscalant / Antifoulant
Stops carbonate and sulphate scale and disperses iron, silt and colloids. Dosed continuously to the RO feed
Dose
2 to 6 mg/L to the RO feed
Pack
25 KG + 200 KG HDPE DRUM
Brackish water RO (BWRO)
SC-BWRO-502 Acid Cleaner
Low-pH CIP cleaner for brackish water membranes. Replace the solution when it turns red-brown
Dose
3 to 6% solution, hold pH 3.0 to 4.0
Pack
25 KG + 200 KG HDPE DRUM
Brackish water RO (BWRO)
SC-BWRO-503 Alkaline Cleaner
Removes biofilm, organics, oils and silt in a CIP clean. Low-foam surfactants and dispersants stop re-deposition
Dose
2 to 5% solution in the CIP tank
Pack
30 KG + 200 KG HDPE DRUM + 1000 KG IBC
Brackish water RO (BWRO)
SC-BWRO-504 Biocide
Non-oxidising shock dose against biofilm in membranes, piping and pretreatment. Flush fully before returning to service
Dose
50 to 200 mg/L for 30 to 60 minutes
Pack
25 KG + 200 KG HDPE DRUM
Seawater RO (SWRO)
Seawater RO (SWRO)
SC-SWRO-505 Antiscalant / Antifoulant
Scale and fouling control under high-salinity conditions. Dosed continuously upstream of the cartridge filters
Dose
2 to 8 mg/L to the SWRO feed
Pack
25 KG + 200 KG HDPE DRUM
Seawater RO (SWRO)
SC-SWRO-506 Acid Cleaner
Dissolves calcium carbonate, calcium sulphate, iron and mineral deposits from seawater membranes
Dose
2 to 5% solution, target pH 2.0 to 3.0
Pack
25 KG + 200 KG HDPE DRUM
Seawater RO (SWRO)
SC-SWRO-507 Alkaline Cleaner
Removes biofilm, organics, oils and silt from seawater membranes, formulated for high-salinity conditions
Dose
2 to 5% solution in the CIP tank
Pack
30 KG + 200 KG HDPE DRUM + 1000 KG IBC
Seawater RO (SWRO)
SC-SWRO-508 Biocide
Non-oxidising shock dose for seawater systems. Controls biofilm in membranes, piping and pretreatment
Dose
50 to 200 mg/L for 30 to 60 minutes
Pack
25 KG + 200 KG HDPE DRUM
Looking for a safety data sheet?
Material safety data sheets are issued on request, for any product in this range.
Where it acts
From the feed line to the CIP tank.
Antiscalants run continuously on the feed. Cleaners and biocides go in offline, then the system is flushed before it returns to service.
Antiscalant and biocide are dosed into the feed line.
SC-BWRO-501
SC-SWRO-505
SC-BWRO-504
SC-SWRO-508
Dose antiscalant upstream so it mixes before the membranes.
SC-BWRO-501
SC-SWRO-505
Where scale, metals, organics and biofilm build up.
All eight treatments
Cleaning solutions are made up and circulated offline.
SC-BWRO-502
SC-BWRO-503
SC-SWRO-506
SC-SWRO-507
Flush until the drain pH matches the feed before restart.
Every cleaner and biocide
Suitable for polyamide RO membranes in brackish water and seawater plants. Follow the membrane manufacturer’s cleaning limits.
Common questions
Cleaning, dosing and membranes.
When normalised permeate flow drops more than 10 percent, differential pressure rises more than 10 percent, or salt rejection falls noticeably. A lightly fouled membrane is easier to clean than a heavily fouled one.
Acid cleaners, SC-BWRO-502 and SC-SWRO-506, remove scale and metal deposits. Alkaline cleaners, SC-BWRO-503 and SC-SWRO-507, remove biofilm, organics, oil and silt. If you are not sure what is on the membrane, send us the operating data and we will advise.
Use the BWRO range for brackish water and the SWRO range for seawater. The SWRO products are formulated for higher salinity, and SC-SWRO-505 runs at a higher dose of 2 to 8 mg/L.
All eight are compatible with polyamide RO membranes when used at the recommended dose and flushed out as directed. Always check against the membrane manufacturer’s limits.
The alkaline cleaners come in 30 kg and 200 kg drums and 1,000 kg IBCs. The antiscalants, acid cleaners and biocides come in 25 kg and 200 kg drums. Other sizes are available on request.
Order
Tell us the plant, we will tell you the programme.
Send the feed water analysis, the membrane type and your recent permeate flow and pressure readings. We will come back with a programme and a price, usually within one working day.
Two production units
Fujairah and Athens
Certified
ISO 9001:2015
Trade Net ID
ShipServ TN-315946
Partner ID
ProcureShip PS ID 14754
