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Reverse Osmosis System

27 years of expertise Brackish · Sea · Recovery · Ultra-pure 96 – 99.7% rejection PLC · HMI · SCADA

Ahura Aqua brings 27 years of experience designing and manufacturing reverse osmosis systems across pharmaceutical purified & ultra-pure water (API, WFI, Formulations), wastewater recovery & reuse, textile & polyester, pulp & paper and chrome-plating for the automobile industry.

RO membranes are the pinnacle of membrane separation — a high-salt solution is forced through a semi-permeable membrane under high pressure. Contaminating ions concentrate into the reject stream while ultra-pure permeate is delivered for commercial, industrial and municipal use.

The RO Advantage · The Pinnacle of Separation
Tightest Cut-Off, Widest Duty
›RO achieves 96 – 99.7% salt rejection at the tightest membrane cut-off (~0.0001 µm) — removing dissolved ions, organics and pyrogens that every coarser membrane passes.
›One platform, four duties: brackish, sea water, multi-stage recovery and ultra-pure — tuned by pressure, staging and polishing to the salinity and purity each application demands.
Capacity · 4″ Module
10 – 150
m³/day
Capacity · 8″ Module
500 – 3200
m³/day
Membrane Cut-Off
~0.0001
micron
Operating Pressure
150 – 1200
psi
Salt Rejection
96 – 99.7
%
System Recovery
35 – 95
%
Working Principle
Feed (Pre-Treated)
High-salt solution under high pressure
→
Semi-Permeable RO Membrane
Pressure-driven separation
150 – 1200 psi · ~0.0001 µm
→
Permeate
Ultra-pure product water
Reject
Concentrated ion stream
A robust pre-treatment stage protects the membrane and sustains rejection — RO delivers maximum efficiency only under optimum operating conditions.
RO System Configurations One platform · four duties
Every RO system shares the same membrane fundamentals — what changes is feed salinity, operating pressure, staging and polishing. Ahura Aqua engineers four distinct configurations to the duty at hand.
BW Brackish Water RO
Borewell · Municipal · Process Feed

The workhorse configuration — low-to-moderate salinity feed from borewell or municipal sources reduced to high-quality process or potable water.

Feed TDS 1,000 – 10,000 ppm
Membrane Ø 4″ or 8″
Operating Pressure 150 – 400 psi
Recovery 70 – 80%
Control Microprocessor / PLC
SW Sea Water RO
Coastal · Island · Desalination

High-pressure desalination for coastal and offshore duties, with energy-recovery devices that reclaim pressure energy from the reject stream.

Feed TDS up to 45,000 ppm
Membrane Ø 8″
Operating Pressure up to 1,200 psi
Recovery 35 – 45%
Energy Recovery Integrated ERD
WW Multi-Stage Wastewater Recovery RO
Reuse · ZLD-Ready

Staged RO arrays push recovery toward Zero Liquid Discharge — treated effluent is recovered for reuse while concentrated reject is handed off to thermal evaporation.

Feed ETP / STP treated effluent
Array 2 – 3 pass, multi-stage
Recovery up to 90 – 95%
Membrane Fouling-resistant, high-rejection
Reject Handling → MEE / MVR evaporation
UP Ultra-Pure Water RO
PW · WFI · Semiconductor UPW

The purity ceiling — double-pass RO feeding EDI and final polishing for pharmaceutical PW & WFI and semiconductor-grade ultra-pure water.

Configuration Double-pass RO + EDI
Resistivity up to 18.2 MΩ·cm
Construction Sanitary, hot-water sanitisable
Standards USP / EP · SEMI grades
Polishing EDI · UV · UF
What It Rejects
Contaminant Classes
Dissolved salts & ions Heavy metals Nitrates & sulphates Silica Organics (TOC) Endotoxins / pyrogens Bacteria & viruses Colloids Hardness
Salt Rejection
Monovalent · NaCl 96 – 99%
Divalent · MgSO₄ / SO₄ 99 – 99.7%
Organics & Pyrogens > 99%
Near-total rejection across the ionic spectrum — the basis for pharmaceutical and semiconductor-grade water.
Industries Served
Pharmaceutical — API / WFI / Formulations Semiconductor — UPW Textile & Polyester Pulp & Paper Chrome Plating — Automobile Food & Beverage Municipal & Commercial