Reverse Osmosis Pretreatment
ERT offers a patented Reverse Osmosis (RO) sulfurous acid pretreatment solution that introduces slight acidity into the treatment stream ahead of the RO filter. This acidity retards biofilm formation, minimizes membrane oxidation, helps to agglomerate solids including heavy metals and pharmaceuticals ahead of the filter, and reduces bicarbonate membrane scaling; thereby reducing buildups on the RO membrane, increasing the size of the molecules making them more susceptible of filtration and reducing scaling on the membrane. The pretreatment removal of certain substances increases the capacity of the RO system to more efficiently process the waste stream. Reduction of membrane buildups causes the membrane to operate more efficiently and reduces maintenance and pumping costs by reducing the pressure required to move materials through the membrane.