Direct Factory & Turnkey Solution Supplier

OEM Solar Seawater Desalination Factory & Supplier

Next-generation zero-emission industrial containerized desalination skids. Integrated photovoltaic-membrane configurations driving off-grid resilience, municipal municipal water safety, and heavy industrial decarbonization.

Global Industrial Landscape

Solar-Driven Desalination: Global Status & Energy Transition

Addressing the critical intersection of energy scarcity and water stress through next-generation photovoltaic membrane technology.

Rising Global Water Stress

Rapid industrialization, climate disruption, and escalating groundwater depletion have forced over 40% of the world's coastal municipalities into critical water stress. Solar reverse osmosis has emerged as the most bankable and scalable capital deployment solution across MENA, APAC, and the Americas.

Decarbonization Mandates

Traditional thermal and grid-tied RO desalination operations carry enormous carbon penalties. Integrating direct-coupled or microgrid solar PV arrays with high-efficiency energy recovery devices (ERDs) cuts Specific Energy Consumption (SEC) below 2.8 kWh/m³, satisfying global ESG criteria.

CapEx & OpEx Optimization

By pre-integrating high-rejection SWRO membranes, variable frequency drives (VFDs), and solar tracking logic inside factory-certified modular enclosures, our OEM solutions slash field installation schedules by over 70%, dramatically lowering Levelized Cost of Water (LCOW).

38+
Invention & Utility Patents
< 2.8
kWh/m³ Specific Energy Rating
99.8%
Salt Rejection Reliability
1000+
Global Deployments Completed
Real-World Deployments

Localized Application Scenarios & Operating Environments

Engineered for extreme operating environments: hypersaline seas, off-grid island outposts, offshore installations, and remote extractive facilities.

Remote Island & Resort Grids

In island microgrids where diesel shipping costs inflate power prices, our solar containerized SWRO units operate completely off-grid. Smart buffer reservoirs decouple solar energy fluctuations from membrane throughput, delivering clean potable water compliant with WHO standards.

Coastal Industrial Complexes

Providing steady boiler make-up and high-grade cooling water for chemical, refining, and manufacturing installations. Pre-engineered container arrays scale alongside facility growth, bypassing local municipal water extraction quotas and regional water rights caps.

Extractive Mining & Port Infrastructure

Built for rugged environments with abrasive salt fog, high humidity, and wide diurnal temperature swings. 316L/Duplex stainless steel pipework, automated UF membrane backwash systems, and anti-corrosive container finishes ensure 20+ years of asset life.

R&D Roadmap

Engineering Architecture & Future Outlook

Pioneering membrane resilience and intelligent process control for the modern industrial water economy.

Dynamic Pressure Coupling

Proprietary algorithms synchronize variable solar photovoltaic outputs with high-pressure booster pumps, balancing flux variation to mitigate fouling and protect membrane longevity without relying on high-maintenance battery banks.

Isobaric ERD Recovery

Modern isobaric energy recovery devices channel high-pressure concentrate discharge directly into the incoming feed stream, capturing up to 96% of reject kinetic energy and slashing total operating costs.

AI Predictive Antiscaling

Integrated smart PLC units continuously analyze influent TDS, temperature, pH, and feed flux. Dosing rates and Clean-In-Place (CIP) schedules adjust automatically, eliminating unplanned shutdowns.

ZLD Brine Concentration

Pairing SWRO arrays with high-pressure DTRO and mechanical vapor recompression (MVR) technologies enables near-total water recovery alongside mineral harvesting, eliminating coastal brine discharge impact.

Turnkey Competence

Full Lifecycle Engineering & OEM Manufacturing Advantage

From preliminary feed chemical profiles to multi-train skid assembly and lifetime field telemetry support, Shanghai Tongjie functions as your specialized OEM factory partner.

ISO-Certified Factory Rigor

Engineered under ISO 9001, ISO 14001, and ISO 45001 standards, alongside CE export conformity. All skids, pressure housings, and weld seams undergo complete hydrostatic and performance testing before leaving our Shanghai production floor.

Comprehensive ODM/OEM Customization

Supporting EPC contractors and global water equipment distributors with white-label assembly, custom control systems (Siemens/Allen-Bradley), branded paint codes, specialized footprint layouts, and export packaging.

End-to-End Field Services

Global on-site commissioning, remote telemetry, spare membrane delivery, and scheduled technician deployments ensure smooth operations across the entire asset lifecycle.

Direct Answers

Frequently Asked Questions: Technical & Procurement

Clear, engineering-backed answers to your most pressing questions about specifying, commissioning, and running solar seawater desalination systems.

What parameters are essential to engineer an OEM solar seawater RO plant?
To provide an accurate technical projection, our engineers require a full feed water analysis—including TDS, chlorides, boron, temperature ranges, silica, SDI, and turbidity. Project site details such as daily capacity targets, product water purity benchmarks, and available solar footprint help us determine optimal membrane selection, recovery ratios, and ERD pairings.
How do containerized systems manage solar power fluctuations without damaging membranes?
Our systems use variable frequency drives (VFDs) paired with high-speed automated control loops. When solar output shifts due to cloud cover, pump speeds ramp dynamically within strict pressure-ramp boundaries (bar/sec). This prevents mechanical shock, osmotic backflow, and membrane compaction without requiring heavy battery banks.
What energy recovery efficiency can be realized on high-capacity skids?
Using ceramic isobaric pressure exchanger devices, up to 96% of the hydraulic pressure in the brine concentrate is transferred directly to the incoming feed stream. This drops net energy consumption to below 2.8 kWh/m³ under standard seawater conditions (35,000 ppm TDS, 25°C), significantly reducing your necessary solar PV footprint.
How fast can a containerized desalination plant be commissioned on site?
Because systems are fully assembled, pre-piped, and wet-tested in our Shanghai factory prior to export, field commissioning typically wraps up within 7 to 15 days. Field teams simply position the container, connect intake and permeate lines, tie into the solar inverter output, and start up using guided PLC commissioning screens.
What private-label OEM and ODM services are offered for international partners?
We offer comprehensive ODM/OEM partnerships. This includes customer-specified PLC interfaces (Siemens, Allen-Bradley, Schneider), custom RAL exterior colors, corporate private labeling, customized documentation, and specialized engineering to meet local regulatory codes (ASME, CE, UL, CSA).