RO Equipment
Water Treatment
Reverse Osmosis System
Model: RO Series
1. Product Overview
A reverse osmosis (RO) system uses a semi-permeable membrane to remove dissolved salts, organics, and microorganisms from feed water. With a membrane pore size of about 0.0001 μm, it achieves salt rejection of 97–99%—the most efficient membrane desalination process available. RO systems are widely used for pharmaceutical purified water, food and beverage, electronics ultrapure water, and seawater desalination.
Key Features
- Salt rejection of 97–99%
- Capacity from 0.5 to 50 m³/h
- Membrane pore size of 0.0001 μm
- Fully automatic PLC control
- Membrane service life of 3–5 years
- Low energy consumption and operating cost
2. Working Principle
RO Principle
Driven by pressure above the osmotic pressure, water molecules pass through the semi-permeable membrane while dissolved salts and organics are retained on the feed side. With a pore size of about 0.1 nm, the membrane removes 97–99% of dissolved salts.
Membrane Array
RO trains are arranged in multiple stages (Stage 1 → Stage 2 → Stage 3), each recovering additional permeate from the previous concentrate. More stages mean higher recovery—about 75% for two stages and up to 85% for three.
3. System Classification
By Membrane
1. Spiral-wound (most common)
2. Hollow fiber
By Capacity
1. Small (0.5–5 m³/h)
2. Medium (5–20 m³/h)
3. Large (20–50 m³/h)
4. Detailed Technical Parameters
Basic Parameters
| Parameter | Specification |
|---|---|
| Model | RO-500/1000/5000/10000 |
| Flow | 0.5–50 m³/h |
| Desalination | 97–99% |
| Recovery | 50–85% |
| Pressure | 0.8–2.0 MPa |
Parameters
| Model | Flow(m³/h) | Elements | Pump(kW) | Recovery(%) |
|---|---|---|---|---|
| RO-500 | 0.5 | 2 | 1.5 | 50–60 |
| RO-1000 | 1 | 4 | 2.2 | 60–70 |
| RO-5000 | 5 | 12 | 7.5 | 70–75 |
| RO-10000 | 10 | 24 | 15 | 75–80 |
5. Core Component Selection
RO Membrane
Spiral-wound composite membranes from Dow/Filmtec and Hydranautics deliver 99.5% salt rejection and a service life of 3–5 years.
High-Pressure Pump
Multistage centrifugal or plunger pumps in SUS316L stainless steel, with an optional variable-frequency drive (VFD) for energy savings.
Pressure Vessel
FRP or stainless-steel pressure vessels rated for 300–1000 psi.
Pretreatment
A pretreatment train of multi-media filter, activated-carbon filter, water softener, and 5 μm cartridge filter protects the RO membranes from fouling.
Control System
A PLC with HMI touchscreen continuously monitors conductivity, pressure, and flow, with automatic flush and low-pressure protection.
6. Typical Application Fields
Pharmaceutical
Purified water (USP/EP/ChP)
Food/Beverage
Drinking and process water
Electronics
Ultrapure water pre-treatment
Desalination
Island and coastal drinking water
7. Design Standards & Certifications
The equipment is designed and built in compliance with the following standards and certifications:
1. GB/T 19249-2017
2. USP/EP Purified Water
3. ISO 9001/14001
4. CE
8. Custom Optional Configurations
| Option | Details |
|---|---|
| Flow | 0.5–50 m³/h |
| Membrane Brand | Dow/Hydranautics/Toray |
| Pump | Centrifugal/Plunger/VFD |
| Pretreatment | Sand+Carbon+Softener+Cartridge |
| Control | Manual/PLC |
| Monitoring | Conductivity/pH/ORP |
9. Warranty Terms
| Status | Warranty | Scope |
|---|---|---|
| New | 12 months | Pressure vessels, pump, controls |
| Membrane | 12 months | Free replacement if rejection fails |
10. Packaging & Delivery
| Item | Packaging |
|---|---|
| Main Unit | Anti-rust, wooden crate |
| Membranes | Sealed, moisture-proof |
| Electrical | Moisture-proof |
Lead time for new equipment: 30–60 working days.
11. Information Required for Inquiry
To receive an accurate quotation, please provide the following information:
Required flow (m³/h)
Feed water quality (TDS/pH/hardness)
Product water quality required
Feed temperature
Application
Pretreatment needs
Membrane brand preference
Control preference
Voltage/frequency
New/Refurbished
Delivery terms