RO Coagulants - Reverse Osmosis Treatment

Advanced Reverse Osmosis Technology

Coagulants can be used to improve filtration and aid the removal of fine colloids, reducing SDI values of RO feedwater. The coagulant should always be dosed prior to the multimedia/ sand filters and as far back in the system as possible for good mixing and coagulation.

Cationic coagulant can foul RO membranes. It is therefore important that the dosage is accurately controlled. Over-dosing, particularly of organic coagulants, can cause the coagulant to break-through the filters and end up in the RO plant. Organic coagulant reaction with anionic polymer antiscalants can also occur, resulting in membrane fouling. It is therefore important to ensure a coagulant compatible antiscalant is used when using cationic coagulants in the pre-treatment.

For further information or assistance please contact Reverse Osmosis Chemicals International on +44 (0) 161 877 2334 or e-mail info@rochemicals.com.