Groundwater recharge uses reclaimed water to replenish groundwater supplies. When saltwater intrudes into aquifers, the water source becomes unsuitable for potable water supply or other uses where high salt levels are intolerable. Reclaimed water can be injected directly into an aquifer to maintain a seaward gradient, preventing inland subsurface saltwater intrusion, or simply to protect an existing withdrawal source.
Direct injection into the aquifer requires water of a high quality that is usually treated beyond secondary treatment with processes such membrane filtration. Membrane filtration technologies are attractive treatment options for water reuse processes because they operate under a continuous process that is easily automated.
Severn Trent Services offers the UAT™ Reverse Osmosis (RO) Membrane Filtration Systems to meet any tap, brackish or seawater application need. Using high quality components, the skid-mounted UAT systems are engineered to effectively produce treated water, free of particulate matter or contaminants. The UAT RO membrane filtration systems range in standard output capacities from 4.7 m³/hr to 78.9 m³/hr or 30,000 GPD to 500,000 GPD, with larger custom units available. Our experienced process engineers have a long history designing and installing the UAT RO filtration systems.
Severn Trent Services offers a variety of system accessories for use with our UAT reverse osmosis membrane filtration systems. Accessories include backwash systems for media filtration, chemical dosing systems, clean-in-place systems and media filtration systems.
Severn Trent Services offers the UAT EDI electrodeionization system, ideally suited for polishing reverse osmosis (RO) permeate, replacing conventional mixed bed ion exchange systems by eliminating the need to store and handle hazardous chemicals used for resin regeneration and associated waste neutralization requirements. Systems are available with a maximum permeate flow rate of 2.2 m³/h - 104 m³/h or 10 GPM - 460 GPM.