Specialized High Performance Antiscalent for Reverse Osmosis Membranes; Process Heat Rejection Systems & Evaporators
ROA-S100-HI is a specialized reacted polymer containing polymeric anti-scalents and dispersants. It is designed to inhibit precipitation of calcium, magnesium and iron salts in the form of carbonate, sulphate and oxalate compounds. It is also effective in the binding of other metallic salts such as aluminium, zinc, strontium and barium.
It is supplied as a unique powder material and reconstituted nominally to a 25% solution on a
mass: mass basis.
TYPICAL PROPERTIES OF A 25% RECONSTITUTION M/M
APPLICATION & CONTROL OF THE 25% RECONSTITUTION
ROA-S100-HI is dosed to reverse osmosis feed water at a nominal rate of 3 to 7 mg/l. However, specific analysis of the water will determine the exact dosage required. For critical heat exchangers it is recommended that satellite dosing occur as close to the heat exchanger as possible and controlled at 8 to 13mg/l. Dosage to evaporators and standard cooling systems feed/make-up should be at 30-50 mg/l divided by the effective cycles of concentration.
There is a direct test method to determine product residual in these systems.