DESALX®
Membrane Free Desalination
NO PRE-TREATMENT REQUIRED
MINIMAL POWER REQUIREMENTS
MEMBRANE FREE
FULLY AUTOMATIC SYSTEM
Summary
Our DESALX® technology removes multivalent cations (such as calcium and magnesium), and then multivalent anions (such as sulphate) in a single unit process. DESALX® is a 2-stage process which consists of two CIF® (continuous ionic filtration) modules in series. Monovalent ions such as sodium and chloride pass through the system, avoiding creating a saline brine.
DESALX® produces a gypsum based brine which can be paired with existing lime precipitation systems on site to produce gypsum solids for a true zero liquid discharge (ZLD) solution. If lime precipitation isn’t available, DESALX® can be used with a high density sludge (HDS) clarifier to achieve ZLD.
Process Description
Each CIF® module in DESALX® comprises a series of four columns, each designed for a specific function – ionic filtration, resin cleaning, resin regeneration and resin washing. CIF® uses a moving bed of charged beads to attract and remove ionic species through ion exchange from water whilst filtering the water of suspended solids. Resins are cycled between columns hourly using an air lift pump allowing continuous operation and regeneration of the system. Moving resins in counter-flow to the water being treated allows for efficient ion exchange, and DESALX® typically uses lower cost sulphuric acid and lime for resin regeneration.
