DeurPWR

Advanced Multi-Stage Reverse Osmotic Filtration with Ultra-Low Residual Discharge

Industrial-Grade Pure Water Recovery

DeurPWR™ is an industrial-grade, high-recovery water treatment system engineered by Deur Water to maximize process water yield while minimizing reject generation. Specifically tailored for water-intensive industries in water-scarce geographies or governed by Zero Liquid Discharge (ZLD) mandates, DeurPWR™ integrates multi-phase membrane filtration, reject valorization, and automated intelligent control to deliver consistently pure water with minimal environmental load.

System Architecture & Fluidic Process Flow

DeurPWR™ is structured as a modular, pressure-zoned system with recirculatory loops, dynamic flux balancing, and chemical conditioning modules. Its staged configuration enables progressive osmotic differentiation and concentrate minimization while sustaining membrane durability across extended duty cycles.

Stage I: Primary Cross-Flow Osmotic Isolation

  • Employs spiral-wound, high-permeability RO membranes designed for 70–80% primary recovery
  • Driven by variable-frequency drive (VFD)-controlled high-pressure pumps for precise transmembrane pressure (TMP) regulation
  • Pre-treatment involves oxidative microbubble infusion and cationic demand neutralization to mitigate membrane fouling and surface polarization

Stage II: Intermediate Reject Reflux Circuit

  • Concentrated effluent is redirected into a second-pass loop with isobaric energy recovery and pressure equalization architecture
  • Employs antiscalant feed modulation and real-time TDS gradient sensing
  • Adds an incremental 10–15% water recovery while attenuating osmotic pressure load

Stage III: Terminal Brine Compression & Residual Extraction

  • Final retentate is subjected to one or more of the following tertiary modules:

    • Low-enthalpy vapor distillation (LEV)
    • Electrodialysis Reversal (EDR)
    • Selective Nanofiltration or Forward Osmosis Finishing
    • Optional Capacitive Deionization (CDI) for trace ionic polishing
  • Achieves residual discharge volumes as low as 5–8% of influent load, ideal for ZLD or near-ZLD operations

Automated Control System

Harnessing a sophisticated SCADA/PLC architecture, the DeurNxT platform delivers:
  • Real-time tracking of key indexes like LSI and RSI for better dosing
  • Automatic adjustment of recovery rates based on water changes and pressure feedback
  • Early warnings for cleaning cycles using biofilm and SDI data
  • Continuous monitoring of pH, ORP, SDI, turbidity, conductivity, and TOC

Industry Applications

  • Pharmaceutical & Biotech – sterile-grade process water
  • Food & FMCG – product-integrity compliant wash & rinse water
  • Heavy Industry & Foundries – cooling towers, boilers, rinse systems
  • Semiconductor & Electronics – ultra-pure rinse and lithography input water
  • Textile & Dyeing – dye-bath recovery and wash water reuse
  • Controlled Agriculture – water-efficient hydroponic or drip systems
  • Brewing & Distillation – clean water for ingredient blending and CIP

Typical Performance Parameters

Parameter Specification
Total Recovery Efficiency 80–90% (modularly scalable)
Final Brine Volume <10–20% of initial feed
Energy Consumption ≤ 2.2 kWh/m³ (optimized)
Membrane Life Expectancy Up to 2.5× standard longevity

Designed for Sustainable Operations

  • Brine volume reduction up to 90%
  • Drastically reduces freshwater intake dependency
  • Compact system footprint and lower sludge burden
  • Supports ESG frameworks and statutory compliance
  • Fully compatible with ZLD/Near-ZLD design mandates

Ready to Start a Project?

Let’s assess your effluent and show you what’s recoverable.