DM (Demineralized) Water Plant with RO Pre-Treatment – 500 LPH

DM (Demineralized) Water Plant with RO Pre-Treatment – 500 LPH

Suitable for Medium Labs, Hospitals, & Small Industrial Applications

Product Overview

This 500 LPH DM Water Plant integrates Reverse Osmosis (RO) pre-treatment with a mixed-bed demineralization unit, delivering high-purity demineralized water for critical processes.

The system is engineered to handle tap, borewell, or pre-treated water, efficiently removing TDS, salts, hardness, and ionic impurities. A 1252 FRP pressure vessel houses the DM resin, ensuring optimal bed depth and high-efficiency deionization for consistent water quality.

Designed for medium-scale laboratories, hospitals, pharmaceutical facilities, and small industrial applications, this plant ensures equipment protection, process accuracy, and compliance with stringent water purity standards.

Key Technical Specifications

• Capacity: 500 Liters Per Hour

• Use: Laboratory, pharma, hospital, industrial DM water

• Pre-Treatment Technology: RO (Reverse Osmosis)

• Demineralization Technology: Mixed-bed Ion Exchange

• FRP Vessel Size (DM Section): 12×52 (1252)

• TDS of Product Water: 1–5 ppm (after DM stage)

• Automation: Semi-automatic or fully automatic control valves

System Components & Units

RO Pre-Treatment Section

1. Raw Water Feed Pump

   • Ensures consistent pressure and flow to the RO and DM sections

2. RO Membrane Module

   • Removes the majority of dissolved salts, hardness, and suspended solids

   • Reduces ionic load on DM resin for extended resin life

3. RO Post-Cartridge Filter (5–10 Micron)

   • Protects downstream DM resin from particulate contamination

Demineralization Section

4. Cation Exchange Resin (Strong Acid Cation Resin)

   • Removes calcium, magnesium, and other cations

5. Anion Exchange Resin (Strong Base Anion Resin)

   • Removes chloride, sulfate, nitrate, and other anions

6. Mixed-Bed Resin in 1252 FRP Vessel

   • Polishes water to achieve ultra-pure DM water quality

7. Control Valves, Flow Meters & TDS Monitors

   • Ensures proper operation, regeneration control, and water quality monitoring

Post-Treatment & Storage

8. DM Water Storage Tank (size as per user requirement)

9. Optional UV Sterilizer / Ozone System

   • Ensures microbiological safety for sensitive applications

Working Principle

• Feed water first passes through RO membranes, removing the majority of dissolved salts and hardness.

• RO permeate is sent to cation and anion resins, where residual ions are exchanged.

• Mixed-bed resin polishes the water to ultra-low TDS (1–5 ppm).

• Resin regeneration is carried out periodically with acid and caustic, restoring full deionization capacity.

Typical Applications

• Medium laboratories & analytical work

• Hospitals & pharmaceutical production

• Small industrial processes requiring DM water

• Boiler feed & cooling water for sensitive equipment

• Electronics, medical, and food industries

Key Advantages

• High-purity DM water production using a combined RO + DM system

• 1252 FRP vessel ensures optimal resin bed depth and efficiency

• Reduces RO membrane fouling and prolongs equipment life

• Compact skid-mounted design suitable for medium facilities

• Minimal maintenance with scheduled resin regeneration

• Consistent, reliable output for critical processes

Operation & Maintenance

• Resin Regeneration: Acid for cation, caustic for anion resins

• Filter Replacement: Sediment, carbon, and cartridge filters based on pressure drop

• Monitoring: Flow, TDS, and pressure gauges for operational safety

• Resin Life: 2–5 years, depending on feed water quality and usage

Design & Selection Guidelines

• Raw water TDS, hardness, and chlorine must be analyzed before installation

• Pre-treatment (softener/iron removal) may be required for high hardness or iron content

• Strict adherence to the regeneration schedule and chemical quality ensures consistent performance

Standard Supply Scope

• Skid-mounted DM + RO combined plant with 1252 FRP vessel

• RO membrane module and high-pressure pump

• Cation and anion resins (pre-loaded)

• Sediment, carbon, and cartridge filters

• Control valves, flow meters, and piping

• Optional UV / ozone sterilizer

• Electrical panel and base frame

• Installation, commissioning, and operator training