Product Overview
Island infrastructure projects demand independent, continuous freshwater generation under severe geographical and environmental constraints. This system integrates multi-stage media pretreatment, ultrafiltration security filtration, high-pressure reverse osmosis, and chemical cleaning in a compact skid-mounted architecture, ensuring compliance with drinking water standards while minimizing operational footprint.
Key Specifications
|
Parameter |
Technical Specification |
|
Production Capacity |
50 m³/day to 2,000 m³/day per unit |
|
Feed Water Salinity |
Up to 45,000 ppm (TDS) |
|
Permeate Quality |
< 500 ppm (Typically < 300 ppm) |
|
System Salt Rejection |
≥ 99.4% |
|
Energy Consumption |
3.2 - 4.5 kWh/m³ (With ERD active) |
|
Design Recovery Rate |
35% - 45% |
Core Technical Advantages
Energy Recovery Integration: Incorporates isobaric energy recovery devices capturing hydraulic energy from the concentrate stream, reducing total plant power consumption by up to 45%.
Corrosion Mitigation: All wetted components exposed to high-pressure brine utilize Super Duplex Stainless Steel (EN 1.4410) or nickel-aluminum-bronze alloys to prevent chloride stress cracking.
Pretreatment Synergy: Dual-layer automatic backwashing disc filters combined with hollow-fiber ultrafiltration units maintain a silt density index below 3 (SDI < 3).
Precision High-Pressure Drive: High-pressure positive displacement pumps matched with variable frequency drives deliver smooth flow ramping, preventing water hammer and hydraulic shock.
Target Applications
Resort Complexes: Providing autonomous, chemical-taste-free potable water for luxury tourist islands without municipal pipelines.
Island Municipalities: Supplying municipal drinking water networks for permanent residential island populations.
Industrial Facilities: Generating high-purity process and boiler make-up water for isolated power plants or fish processing plants.
Emergency & Defense: Rapidly deployable skid units securing baseline survival water for tactical defense sites or disaster-struck coastal zones.
Operational Workflow
Intake & Pretreatment: Raw seawater passes through intake screens, multi-media filters, and ultrafiltration modules to eliminate suspended solids, algae, and turbidity.
Chemical Conditioning: Antiscalant dosing prevents mineral scaling on membrane surfaces, while sodium bisulfite neutralizes free chlorine protecting polyamide layers.
High-Pressure Reverse Osmosis: High-pressure pumps pressurize pretreated water to 55 - 68 bar, forcing pure water molecules through spiral-wound membranes while retaining ions.
Energy Recovery & Post-Treatment: Brine pressure is transferred to incoming feed water via energy recovery units before the permeate undergoes pH adjustment and disinfection.
System Architecture
Hydraulic Core: High-pressure positive displacement pumps, booster pumps, and pneumatic control valves housed on an epoxy-coated structural carbon-steel skid.
Membrane Array: Seawater reverse osmosis elements arranged in a tapered pressure vessel configuration within fiberglass-reinforced plastic housings rated for 1,000 psi.
Control Panel: PLC-based automation featuring color HMI touchscreen, real-time telemetry sensors, and automated flushing sequences.
CIP Subsystem: Integrated chemical mixing tank, electric heating element, and dedicated cleaning pump for periodic membrane restoration.
Selection & System Design Guide
Feedwater Mapping: Provide local raw seawater complete ion analysis to determine precise membrane flux rates and scaling indices.
Power Evaluation: Assess island grid stability or diesel generator capacity to size appropriate soft starters and harmonic filters.
Footprint Assessment: Select between modular containerized layouts or split-skid configurations depending on container shipping limits and installation space.
Redundancy Planning: Determine standby pump requirements and dual-train configurations for continuous 24/7 operations.
Customization Options
Containerized Enclosures: Integration inside 20-foot or 40-foot ISO maritime steel containers with internal climate control, insulation, and interior lighting.
Solar-Hybrid Integration: Direct DC-AC solar PV inverter compatibility to run low-capacity units on island renewable microgrids.
Material Upgrades: Substitution of standard wetted parts with Titanium Grade 2 or 9 for extreme hypersaline or high-temperature environments.
Cloud Telemetry Module: 4G/Satellite IoT gateway enabling remote diagnostic tracking, automated alarm push notifications, and engineering troubleshooting.
Quality Control
Hydrostatic Testing: All high-pressure piping assemblies undergo 1.5x design pressure hydrostatic testing prior to dispatch.
Factory Acceptance Testing: Complete electrical loop testing, PLC logic verification, and functional wet testing using simulated feed water.
Material Traceability: Mill test certificates verified for all stainless steel, super duplex, and pressure vessel components.
Welding Inspection: 100% visual inspection and non-destructive testing on high-pressure stainless steel orbital welds.
Frequently Asked Questions
Hot Tags: seawater ro system for island applications, China seawater ro system for island applications manufacturers, suppliers, domestic ro water purifier, osmosis drinking water, ro carbon filter price, ro osmosis system, ro storage tank pressure, ro tank