Vadodara, Gujarat, India

ASM’s Demineralised Water Reverse Osmosis (DMRO) Plants are designed to treat fresh water, with < 1,000 mg/L of dissolved solids (TDS) and < 30 mg/L of suspended solids (TSS), to produce high purity demineralised water with TDS < 1 mg/L. The standard treatment process involves pre filtration (auto-backwashing multimedia filters and cartridge filters), anti-scalant dosing to prevent membrane scaling, two-pass RO desalination and a CIP system for membrane cleaning; with the inclusion of optional mixed bed ion exchange or continuous electro-deionization (CEDI), TDS < 0.1 mg/L can be achieved.

Additional pre-RO and post-RO treatment steps may be added as required to suit feed water conditions and/or treated water quality requirements. The  DMRO plants are available as skid mounted or containerised systems.

If you have specific requirements, contact us to discuss our custom designed desalination plants or ask about our hire options.


Parameter Units DMRO-25 DMRO-50 DMRO-100 DMRO-150 DMRO-250 DMRO-500 DMRO-1000
Permeate Flow Rate m3/day 25 50 100 150 250 500 1000
Permeate Recovery Rate % <55 <60 <75 <75 <75 <80 <80
Permeate TDS mg/L <1 (<0.1 with ion exchange or CEDI) @ 25°C
Raw Water TDS mg/L <1,000
Raw Water TSS mg/L <30
Raw Water Temperature °C <45
Ambient Design Temperature °C 5 ~ 45 (-15 ~ 50 for insulated containerized system)
Feed Water Inlet Pressure kPa >15 (flooded suction)
Permeate Discharge Pressure kPa ~40 (higher discharge pressures available on request)
Brine Discharge Pressure kPa ~40 (higher discharge pressures available on request)
Power Supply AC 380~450 V, 3 Phase, 50/60 Hz
Power Consumption kW 4.5 6.7 10.2 15.2 22 33.5 67
No. Containers (Optional) 1 x 20’ 1 x 20’ 1 x 40’ 1 x 40’ 1 x 40’ 2 x 40’ 2 x 40’


✓= Standard Supply o = Optional Supply – = Not Applicable

Equipment DMRO-25 DMRO-50 DMRO -100 DMRO -150 DMRO-250 DMRO-500 DMRO-1000
Skid Mounted Plant & Equipment
Low Pressure Feed Pump
High Pressure RO Pumps (Pass 1 & 2)
Pre-filtration Multimedia o o
Ultra Filtration o o o o o o o
Cartridge Filters
Post RO polishing Mixed Bed Ion Exchange o o o o o o o
CEDI o o o o o o o
Anti Scalant Dosing System
Membrane CIP System
PLC Control System with HMI
Containerized system, c/w A/C & Lights o o o o o o o
Container Insulation (walls & ceiling) o o o o o o o
Container Non-Slip Floor Coverings o o o o o o o
Container Side Access Door o o
Additional Pre-RO Treatment o o o o o o o
Additional Post-RO Treatment o o o o o o o
Premium Instrumentation Package o o o o o
Permeate Distribution Pump Set o o o o o o o


Instrumentation Standard Package Premium Package
Pressure Gauges
Pressure Transmitters (4-20 mA)
HP RO Pump (Pass 1 & 2) Inlet Low Pressure Switch
Flow Gauges (Rotameters)
Flow Transmitters (4-20 mA)
Conductivity Transmitters (4-20 mA)
Float Switches (Feed/Permeate & Chemical Dosing Tanks)
Remote Monitoring & Control Capabilities
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