Product Highlights
| ⚡ High Flow Industrial Capacity | 🛡️ Softener for Hardness Removal | 🔧 Complete 4-Stage Treatment |
|---|---|---|
| 4000L/H (96,000 GPD) output. Four ULP21-8040 large-area membranes. Desalination rate ≥97%. 380V/4.5KW. | Removes calcium and magnesium ions. Prevents RO membrane scaling. Extends membrane life by 30-50%. | Sand filter + Carbon filter + Softener + Cartridge filter. Full protection for high hardness well water. |
Product Short Description
High capacity. Complete hardness protection. Built for industrial demand.
The 4000L/H 4-Stage RO system features sand filter, carbon filter, softener (resin tank for calcium/magnesium removal), and precision filter — full pre-treatment for high hardness well water and groundwater. Four ULP21-8040 large-area membranes deliver 4000L/H (96,000 GPD). Perfect for large factories, industrial facilities, beverage plants, and commercial water production with hard water sources.
Product Highlights
| 🧱 Complete 4-Stage Pre-treatment | ⚡ High Flow 8040 Quad Membranes |
|---|---|
| Sand filter + Carbon filter + Softener + Cartridge filter. Full protection for high hardness well water and groundwater. | Four ULP21-8040 large-area membranes. 4000L/H output. Desalination rate ≥97%. 380V/4.5KW. |
| 🛡️ Softener Included | 🔌 Plug & Play |
|---|---|
| Removes calcium (Ca²⁺) and magnesium (Mg²⁺) ions. Prevents RO membrane scaling. Includes resin tank + brine tank for regeneration. | Pre-assembled on steel frame. Connect water and power. Start within 4-6 hours. |
| 🏭 Industrial Grade | ✅ CE Certified |
|---|---|
| Heavy-duty steel frame. FRP tanks with auto valves. Built for 24/7 continuous operation. | 1-year warranty. Factory direct from China. OEM customization available. |
Applications
| Application | Description |
|---|---|
| 🏭 Large Factory | Process water, cleaning water, boiler feed water (softened water protects boilers) |
| 🏭 Beverage Plant | Production water for soft drinks, juices, beer |
| 🏨 Large Hotel | Guest drinking water, kitchen water, laundry, pool |
| 🏥 Large Hospital | Medical pure water, instrument cleaning, dialysis water |
| 🏘️ Large Community | Centralized water supply for large communities |
| 💧 Commercial Water Plant | Bottled water, bagged water production |
| 🌾 Industrial Agriculture | Irrigation, livestock drinking water |
Filtration Process
Raw Water → Sand Filter → Carbon Filter → Softener (Resin Tank) → Cartridge Filter → High Pressure Pump → RO Membranes (8040×4) → Pure Water
| Stage | Component | Function |
|---|---|---|
| 1 | Sand Filter | Removes sediment, rust, suspended solids |
| 2 | Carbon Filter | Removes chlorine, odor, organic matter |
| 3 | Softener (Resin Tank) | Removes calcium (Ca²⁺) and magnesium (Mg²⁺) ions — prevents RO membrane scaling |
| 4 | Cartridge Filter | 5μm fine filtration, protects RO membranes |
| 5 | RO Membranes (×4) | Removes up to 99% of dissolved salts, bacteria, viruses |
Technical Specifications
| Parameter | Value |
|---|---|
| Model | FRO-218-4T-3S |
| Type | Skid-Mounted RO System (4-Stage with Softener) |
| Flow Rate | 4000 L/H (≈ 96,000 GPD) |
| Desalination Rate | ≥97% |
| Recovery Rate | 50-75% (Adjustable) |
| Membrane | ULP21-8040 × 4 |
| Single Membrane Area | 37.2 m² |
| Total Membrane Area | 148.8 m² |
| Tank Configuration | Sand Filter + Carbon Filter + Softener + Cartridge Filter (4 tanks) |
| Tank Material | FRP (Fiberglass Reinforced Plastic) |
| Machine Dimensions | 1200×800×1600 mm |
| Tank Dimensions | 2200×600×2100 mm (each) |
| Pre-treatment | Sand + Carbon + Softener + Cartridge |
| Softener Resin Type | Food grade strong acid cation exchange resin |
| Softener Resin Amount | 200L (for 4000L/H system) |
| Regeneration | Manual / Automatic (with brine tank) |
| Outlet Hardness | ≤ 50 mg/L (raw water hardness ≤ 400 mg/L) |
| Voltage | 380V / 50Hz (220V/60Hz optional) |
| Power | 4.5 KW |
| Frame | Steel, Skid-Mounted |
| Weight | 900 kg |
| Feed Water Source | Well water, groundwater, borehole water (high hardness) |
| Max Feed Hardness | ≤ 400 mg/L (softened to ≤ 50 mg/L) |
| Max Feed TDS | ≤ 2000 ppm |
| Warranty | 1 Year |
| Certification | CE |
What’s Included in the System?
| Component | Qty |
|---|---|
| Sand Filter (FRP with auto valve) | 1 |
| Carbon Filter (FRP with auto valve) | 1 |
| Softener (FRP with auto valve + resin + brine tank) | 1 |
| Cartridge Filter (20 inch) | 1 |
| RO Housing (FRP / SS) for 8040 | 4 |
| RO Membrane (ULP21-8040) | 4 |
| High Pressure Pump (4.5KW, 380V) | 1 |
| Steel Frame (Skid-Mounted) | 1 |
| PLC Control Panel | 1 |
| Piping & Fittings | 1 set |
| Pressure Gauges & Flow Meters | 1 set |
Note: Raw water tank and pure water tank are not included. They can be purchased separately.
Softener Feature: Why It Matters
The Problem
High hardness water (high calcium & magnesium) causes:
- ❌ Scale buildup on RO membranes (white crusty deposits)
- ❌ Reduced water output
- ❌ Increased pressure drop across membranes
- ❌ Frequent chemical cleaning
- ❌ Shortened membrane life (1-1.5 years)
The Solution
Our system includes a built-in water softener (resin tank) :
| Raw Water Hardness | Need Softener? |
|---|---|
| ≤ 100 mg/L | No — standard RO is fine |
| 100 – 300 mg/L | Recommended |
| > 300 mg/L | Strongly Recommended |
Result: Outlet hardness ≤ 50 mg/L · Membrane life extended by 30-50% · Reduced cleaning frequency
How the Softener Works
- Raw water passes through the resin tank
- Resin beads attract and hold calcium (Ca²⁺) and magnesium (Mg²⁺) ions
- Softened water flows to RO membranes (scale-free)
- When resin is saturated, regeneration with salt solution restores it
- Brine tank provides salt for regeneration (manual or automatic)
Softener Specifications
| Item | Specification |
|---|---|
| Tank Material | FRP |
| Tank Dimensions | 2200×600×2100 mm |
| Resin Type | Food grade strong acid cation exchange resin |
| Resin Amount | 200L |
| Regeneration | Manual / Automatic (with brine tank) |
| Outlet Hardness | ≤ 50 mg/L |
| Regeneration Cycle | 2-5 days (depending on raw water hardness) |
| Salt Consumption | Approx. 30-40kg per regeneration |
Key Features
Feature 1: 4000L/H High Capacity Industrial Flow
- 96,000 GPD daily output
- Suitable for 8,000-10,000 people
- Perfect for large factories, industrial facilities, beverage plants, and commercial water production
Feature 2: Complete 4-Stage Pre-treatment with Softener
| Tank | Function |
|---|---|
| Sand Filter | Removes sediment, suspended solids |
| Carbon Filter | Removes chlorine, odor, organics |
| Softener | Removes calcium & magnesium — prevents scaling |
| Cartridge Filter | 5μm fine filtration |
Full protection for high hardness well water and groundwater.
Feature 3: 4 x ULP21-8040 Large-Area Membranes
- Four 8040 membranes in parallel
- Total membrane area: 148.8 m²
- Desalination rate ≥97%
- Low pressure operation (8-12 bar), energy saving
- 4000L/H stable output
Feature 4: Industrial Grade Construction
- Heavy-duty steel frame — 900kg robust design
- FRP tanks — corrosion-resistant, durable
- Machine dimensions: 1200×800×1600 mm (compact frame)
- Tank dimensions: 2200×600×2100 mm each
- Designed for 24/7 continuous industrial operation
Feature 5: PLC Auto Control
- One-key start
- Auto flush
- Low pressure protection
- Fault alarm display
With Softener vs Without Softener Comparison
| Comparison | Standard RO (No Softener) | This System (With Softener) |
|---|---|---|
| Pre-treatment | Sand + Carbon + Cartridge | Sand + Carbon + Softener + Cartridge |
| Hardness removal | No | Yes — removes Ca²⁺, Mg²⁺ |
| Suitable feed water | Tap water, low TDS well water | High hardness well water, groundwater |
| Membrane scaling risk | High (with hard water) | Low |
| Membrane cleaning frequency | Every 1-3 months | Every 6-12 months |
| Membrane life | 1-1.5 years | 1.5-2 years (30-50% longer) |
| Operating cost (chemicals, labor) | Higher | Lower |
1. What is the daily output?
4000 L/H equals approximately 96,000 gallons per day (about 96 tons), enough for 8,000-10,000 people.
2. What is the advantage of 8040 membranes over 4040?
Four 8040 membranes provide 148.8 m² of membrane area — 29% more than sixteen 4040 membranes (115.2 m²). Fewer components (4 housings vs 16), less piping, lower leak risk, and much easier maintenance.
3. Why do I need a softener?
If your water source is well water, borehole water, or groundwater with high hardness (calcium and magnesium), a softener prevents scale formation on RO membranes. This extends membrane life by 30-50% and reduces maintenance costs.
4. How does the softener work?
The resin tank contains special resin beads that attract and hold calcium (Ca²⁺) and magnesium (Mg²⁺) ions, removing them from the water. When the resin becomes saturated, it is regenerated using a salt solution from the brine tank.
5. How often do I need to regenerate the softener?
Typically every 2-5 days, depending on your raw water hardness and water flow rate. Automatic regeneration can be set based on time or water volume.
6. How much salt does it use?
Approximately 30-40kg of salt per regeneration cycle.
7. What voltage is required?
Standard 380V / 50Hz (3-phase). 220V / 60Hz is available upon request.
8. How much floor space is required?
Approximately 15-18 square meters, including all tanks, frame, and operation/maintenance access.
9. How long does installation take?
About 6-8 hours. The system comes pre-assembled — just connect water inlet, drain, and power.
10. What is the MOQ?
1 set. OEM customization available for bulk orders.
Why Buy From Us?
| ✅ Factory Direct | ✅ CE Certified | ✅ 1-Year Warranty |
|---|---|---|
| No middleman. Better price. | Internationally certified. | Peace of mind. |
| ✅ OEM Available | ✅ 24/7 Support | ✅ Global Shipping |
| Custom logo, color, voltage. | We’re here to help. | Delivered worldwide. |
GET IN TOUCH