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Heavy-duty Seawater Reverse Osmosis engineered for island resorts, coastal mining camps, and offshore platforms. Built with C5-M marine-grade anti-corrosion coating and Isobaric Energy Recovery Devices (ERD). 100% Plug & Play.
Every WANDONG SWRO platform is built exclusively from globally recognized Tier-1 OEM components. We act as your risk-free firewall against high-salinity marine corrosion.
The undisputed industry benchmark for seawater reverse osmosis. Origin: USA.
Axial piston high-pressure pumps coupled with ERI™ Isobaric Energy Recovery Devices.
S7-1200 PLC + Schneider Electrics + 7" HMI Touchscreen with SCADA integration.
Duplex and Super Duplex stainless steel high-pressure piping. The absolute soul of marine anti-corrosion.
Precision engineering down to the last weld. No shortcuts.
We don't hide behind metal enclosures. Explore the internal engineering of our core components that guarantee 15+ years of continuous operation.
Wear-resistant, corrosion-proof ceramic internal disks ensure zero-leakage during backwash cycles.
Heavy-wall stainless steel housing with V-band clamp design for rapid 5µm PP cartridge replacement.
Laser-welded stainless steel impellers and tungsten carbide bearings for vibration-free high-pressure output.
Continuous fiberglass roving wound with epoxy resin. Burst-tested to 4x operating pressure for absolute safety.
Protecting the RO membrane is the secret to a 15-year lifespan. Our heavy-duty SS304 vessels utilize stratified media beds to eradicate suspended solids, chlorine, and hardness before they reach the high-pressure stage.
Stratified layers of refined quartz sand intercept large particulates, rust, and colloidal matter, reducing feed water turbidity to < 1.0 NTU.
High iodine-value granular activated carbon (GAC) absorbs residual free chlorine, organics, and odors. Absolute protection against polyamide membrane oxidation.
Food-grade cation resin softens the water by replacing scaling Calcium (Ca²⁺) and Magnesium (Mg²⁺) ions with Sodium (Na⁺), preventing RO membrane scaling.
When you are 500 miles from the nearest technician, your equipment must protect itself. Our Siemens/Schneider logic acts as an invisible operator.
Instantaneous shutdown protocols programmed into the Siemens PLC to prevent catastrophic pump or membrane failure.
Membrane lifespan is your biggest OPEX. We integrate medical-grade dosing and cleaning systems to double the life of your DOW elements.
Highly calibrated dosing pumps inject precise antiscalant chemicals before the high-pressure pump, eliminating calcium/magnesium scaling inside the pressure vessels.
Standardized built-in chemical cleaning tank and pump. Allows operators to flush and restore membrane flux without removing elements from the housing.
CONTAINERIZED (ISO HIGH-CUBE): Marine-grade, climate-controlled enclosures built to survive harsh EPC sites. 100% zero civil work—just connect pipes and power for instant water security.
SKID-MOUNTED (OPEN-FRAME): Ultra-compact, forklift-loadable stainless steel frames. Designed to drop seamlessly into existing industrial plants with zero facility disruption.
Feed seawater must comply with the following strict parameters. Exceeding these limits will void membrane warranty and require pre-treatment upgrade.
| PARAMETER | MAX LIMIT |
|---|---|
| Max Salinity (TDS) | ≤ 45,000 ppm |
| SDI₁₅ | < 3.0 |
| Free Chlorine (Cl₂) | Strictly Not Detected (0 ppm) |
| Turbidity | < 0.5 NTU |
When inlet conditions are met, WANDONG ENVIRO contractually guarantees the following effluent/permeate quality standards.
| OUTPUT METRIC | GUARANTEED VALUE |
|---|---|
| Product TDS | ≤ 500 mg/L |
| Boron Level | < 0.5 mg/L (Double-Pass) |
| Pathogens / Bacteria | 99.99% Removed |
| System Recovery Rate | 35% - 45% |
| WATER SOURCE | SDI₁₅ | DESIGN FLUX | DECAY %/YR |
|---|---|---|---|
| Open Ocean Intake | < 3 | 13 LMH | 6.0% |
| Beach Well Intake | < 2 | 15 LMH | 4.4% |
| Red Tide Prone Area | 3-5 | 11 LMH | 9.9% |
| MEMBRANE TYPE | INIT. PASSAGE | INCREMENT %/YR |
|---|---|---|
| Standard Seawater SWRO | 0.2% | +10% |
| High-Rejection SWRO | 0.15% | +8% |
| Low-Energy SWRO | 0.3% | +12% |
Step 1: Raw Water Pre-treatment Skid. The process begins by pumping seawater into the multi-media or Ultrafiltration (UF) skid. This critical seawater desalination pre-treatment stage reduces the Silt Density Index (SDI < 3) and eliminates marine bio-fouling risks to protect the polyamide membrane from irreversible oxidation.
Step 2: Chemical Dosing & ERD Integration. To prevent inorganic scaling within the pressure vessels, a highly calibrated Antiscalant dosing pump injects precise chemicals. An integrated CIP (Clean-in-Place) system is standard to ensure long-term membrane vitality. Simultaneously, the brine pressure is captured by an Isobaric Energy Recovery Device (ERI™ ERD), which reduces overall power consumption to < 3.0 kWh/m³.
Step 3: High-Pressure Separation (SWRO Stack). Powered by premium Duplex stainless steel pumps, the pre-treated seawater is forced through the containerized SWRO membrane elements at pressures up to 60-80 bar. The semi-permeable membranes achieve a salt rejection rate of >99.8%, separating the permeate (fresh water) from the brine (concentrate).
Step 4: Post-Treatment (Remineralization). The pure permeate passes through a calcite filter to add essential minerals back into the water, adjusting the pH and ensuring the turnkey SWRO desalination plant delivers water that strictly complies with WHO drinking water standards.
Unlike standard dead-end filtration, our SWRO elements utilize a dynamic cross-flow design. High-pressure feed water sweeps across the membrane surface, preventing rapid fouling while forcing pure H₂O molecules through the 0.0001µm semi-permeable polyamide layer.
Containerized plants operating seamlessly across extreme climates and demanding high-salinity applications globally.
Silent operation SWRO packages hidden inside aesthetic enclosures. C5-M marine paint prevents severe salt-breeze corrosion for Maldives and Caribbean resorts.
Turnkey potable water supply for 1000+ workers. Designed to withstand +50°C ambient temperatures and severe coastal dust storms.
Compact footprint skid-mounted desalination. ATEX compliant components and integration with existing SCADA systems.
Comprehensive technical blueprints and datasheets designed to help project owners and contractors evaluate system integration.
Buying heavy machinery across borders shouldn't be a gamble. We replace expensive overseas dispatch fees with rigorous factory prep, color-coded assembly, and 1-on-1 video engineering support.
Zero guesswork. All systems arrive with English 3D P&IDs, color-coded piping, and clearly labeled flanges. Your local mechanical contractors simply connect the dots.
We eliminate startup risks at the factory. You witness your system undergo rigorous hydrostatic and performance testing via live stream before it ever boards a ship.
Direct access to the English-speaking process engineers who built your plant. Live video troubleshooting ensures your local team never faces downtime alone.
Protect your investment. We stock 100% original consumables. Air-freight friendly via DHL/FedEx to prevent catastrophic downtimes.
Island resorts and coastal municipalities don't just need water; they need a scalable business model. Seamlessly link your SWRO plant to our automated rinsing, filling, and capping lines.
Fully automated 3-in-1 monoblock (Washing/Filling/Capping). Direct pipeline integration from the SWRO permeate tank with UV/Ozone sterilization.
Heavy-duty decapping, multi-stage hot alkali washing, and precise filling. The ultimate high-margin ROI generator for remote mining camps and island communities.
Didn't find the answer you're looking for?
Talk to a Process Engineer"You focus on scaling your operations; let us handle the heavy-duty water infrastructure. Submit your parameters below, and our engineering team will architect a custom, zero-civil-work solution guaranteed to perform anywhere on earth."
Director of Global Projects
"Submit your raw water analysis report today. Our senior engineering team will provide a precise P&ID turnkey solution and factory-direct CapEx budget within 48 hours."