Removal of dissolved solids from water by Reverse Osmosis can produce water of similar purity to that produced by ion-exchange technology but with the advantage of not requiring the hazardous chemicals that are required to regenerate an ion exchange deioniser. Deionisation is the process of removing the dissolved salts from water thereby eliminating the multiple problems that can result from such impurities.

Some typical applications that benefit from this process are as follows:

• High pressure steam boiler feed
• High pressure hot water boilers
• Rinse water for printed circuit boards
• Rinse water for electronics manufacture
• Laboratory water
• Haemodialysis
• Anodising

• Rinse water for electro-plating
• Rinsing of metal parts prior to painting
• Thinning of water based lubricants
• Paint manufacture
• Pharmaceuticals
• Battery manufacture
• Process water for chemicals
• Glass window manufacture

In order to select the correct model for a particular application, several related factors need to be taken into consideration. The most important of these are as follows:

• Daily usage of treated water
• Quality of water required
• Quantity of water at peak flow rates
• Is a continuous supply of water required to service
• Chemical composition of the raw water to be treated

• Does the raw water require pre-treatment by softening and carbon filtration.
• Is a raw water tank required
• Is a treated water tank necessary
• Method of distribution of the treated water to the point of use

Standard Models

Standard models can accomodate flow rates from 1900 litres per day up to 440,000 litres per day. The quality of water form an R.O. plant would typically be 10 microsiemens but the quality can be improved to less than 1 microsiemen by alteration of the system design. An R.O. plant must be supplied with softened water to prevent scale formation and de-chlorinated water to prevent oxidation of the membrane by chlorine. These items are not supplied as standard.

R.O. Compact Range - 1900 - 20000 litres per day

Non Standard Models

This model has simplex softener, carbon filtration, sediment filtration and after the reverse osmosis module has mixed bed deionisation vessel to further improve the quality of the water.