Reverse osmosis plant recovery rates vary from as low as 10% in the case of sea water to 90% with some low salinity brackish waters. As the water passes along the membrane surface the salt concentration increases and some sparingly soluble salts exceed their solubility products. These salts can precipitate on the membrane surface causing fouling which may reduce output and increase the product water conductivity. The two most trouble­some salts are calcium carbonate and calcium sulphate and their prevention is essential if the membrane is to work efficiently.

 

On the basis of scale formation like (calcium, magnesium, carbonates, sulphates or silica) Different type of anti Scalent are used to remove the scale from Ro membranes

 

Anti-Scalent is formulated with a combination of organic phosphonates and polymeric dispersants to both inhibit the formation of scale forming salts and to disperse typical suspended solids which can enter these systems from the raw makeup/feed water.  It is designed to provide CaCO3, CaSO4, and BaSO4 scale control and sequestration of soluble iron and manganese at low treatment dosages.  This product is intended for use where membrane treatment processes produce potable water for distribution.

Use it where ANSI/NSF Standard 60 drinking water additive is required. This is intended for use on non-potable water distribution systems

ACIDIC CLEANERS

Acidic cleaner is a low pH formulation specifically designed to remove metal hydroxides, calcium carbonate and other similar scales from reverse osmosis membrane surfaces.  This formula is safe to use on polyamide, polysulfone and thin film composite membrane surfaces. Reverse osmosis membranes effectively filter out most dissolved solids and suspended solids.  Overtime, these membranes foul and require cleaning.  The off-line cleaning procedure is often referred to as a clean-in-place (CIP) procedure.

BASIC CLEANER

Basic cleaner is an alkaline pH formulation specifically designed to remove organics, silt and other particulate deposits from reverse osmosis membrane surfaces.  This formula is safe to use on polyamide, polysulfone and thin film composite membrane surfaces.

MICROBIOCIDE:

A micro biocide is any biocidal compound or substance with the purpose of reducing the infectivity of microbes, such as viruses or bacteria. The application of a micro biocide is usually a secondary step following cleaning, or in some cases a supplementary factor in conjunction with the chemical/physical cleaning.

This biocide is an excellent, low application cost micro biocide for use in industrial reverse osmosis water systems, recirculating cooling water systems, air washer systems, once-through industrial cooling water systems, metal working fluids containing water,  in pulp, paper, and paperboard mills, membrane separation system, enhanced oil recovery system, hydro testing and publicly-owned treatment works.  The product is fast acting and particularly cost effective in controlling the growth of slime forming bacteria, algae, fungi, coliform and yeast when used at a pH of 6.0-8.5.  It is still effective at a slightly higher pH levels; however, the upper feed rate dosages may be required.