Best Energy-Efficient Solution for Brackish Water

High‑efficiency energy recovery systems — Using technologies such as isobaric pressure exchangers in brackish water reverse osmosis (BWRO) plants can recover up to ~98% of energy from the brine stream.

Use of membrane technologies tailored for brackish salinity — For moderate TDS levels, methods like electrodialysis (ED) and nanofiltration (NF) consume significantly less energy than traditional thermal desalination.

Optimal pretreatment and pump‑system design — Proper pretreatment (filtration, anti‑fouling) combined with variable frequency drive (VFD) pumps ensures membranes last longer and less energy is wasted.

Integration of renewable energy sources — For remote or off‑grid sites, coupling solar PV/solar‑RO with brackish water systems reduces dependence on grid power and cuts operational expense.

High water recovery and minimal waste volume — Efficient brackish systems maximise water recovery (e.g., 80 %+ where possible) and reduce reject brine to lower treatment and disposal cost.

Scalable/modular solutions for different capacities — Systems designed to scale (from small community units to industrial plants) allow better matching of energy‑use per unit water and cost‑effectiveness.