CE Certification Eco-Friendly Water Treatment Solutions - ODM Services from China Suppliers & Factory for Global Brands Suppliers, Manufacturer
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Direct OEM / ODM Portfolio
High-Efficiency Desalination & Pure Water Platforms
Engineered for mission-critical municipal, energy, marine, and semiconductor operations.
CE Certification Ultra-Pure Water System for Semiconductor and Electronics Manufacturing by China Suppliers and Factory Factory, Suppliers
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OEM High-Salinity Wastewater Treatment System - ZLD Solutions from China Suppliers and Factory Suppliers, Manufacturers
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China High-Salinity Wastewater Reduction System by China Suppliers | Zero Liquid Discharge Solutions from Factory Factories, Supplier
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China Water Reuse Equipment (Pretreatment + UF + RO Process) Factories, Supplier
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ODM High-Pressure Membrane Concentration System for High-Salinity Wastewater | China Suppliers & Factory Factories, Factory
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CE Certification Compact Seawater Desalination System from China Suppliers & Factory for Freshwater Solutions Manufacturers, Manufacturer
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Wholesale China Suppliers of Factory-Integrated Containerized Seawater Desalination Plants for Off-Grid Solar Solutions Factories, Manufacturer
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Technical Whitepaper
Large-Scale SWRO: Thermodynamic Efficiency & Future Architecture
Addressing the paradigm shift from traditional thermal evaporation to ultra-low energy isobaric membrane separation and intelligent recovery trains.
Isobaric ERD Integration
Modern turning-salt-water-into-fresh-water installations rely fundamentally on Isobaric Energy Recovery Devices (PX). By transferring pressure directly from high-salinity brine waste streams to incoming seawater without intermediate electrical conversion, our plants achieve up to 98% hydraulic pressure recovery, limiting specific energy consumption (SEC) strictly between 2.2 and 2.8 kWh/m³.
- Energy Efficiency: Net reduction of OPEX by ~58%
- Intake Handling: High-pressure ceramic rotor stability
- Duty Balance: Dual-stream isobaric manifold piping
Advanced Pretreatment Train
Unplanned membrane autopsies confirm silt and biofouling as the primary vectors of premature membrane degradation. Tongjie integrates dissolved air flotation (DAF), ultrafiltration (UF) hollow-fiber membranes, and automated chemical dosing skid packages, ensuring continuous feed Silt Density Index (SDI₁₅) < 2.5, even during severe red-tide or coastal storm conditions.
- Turbidity Barrier: UF nominal pore size 0.02 μm
- Chemical Minimization: Optimized scale inhibition
- Biofouling Suppression: Dual biocide regime control
Next-Gen Membrane Technology
The transition toward high-flux, thin-film nanocomposite (TFN) membranes featuring embedded metal-organic frameworks (MOFs) allows dramatic salt rejection (>99.8%) with minimized feed pressure requirements. Furthermore, our systems incorporate multi-stage boron rejection passes to comfortably meet WHO potable standards (<0.5 mg/L) across high-temperature sea zones.
- Salt Rejection: 99.85% nominal operational rate
- Thermal Range: Operating from 5°C to 45°C seawater
- Durability: 5 to 7 year extended membrane lifecycle
| Desalination Parameter | Conventional Thermal (MSF / MED) | Standard Skid SWRO | Tongjie Engineered Large-Scale ODM SWRO |
|---|---|---|---|
| Specific Energy (SEC) | 12 - 25 kWh/m³ (Thermal + Electric) | 3.8 - 4.5 kWh/m³ | 2.4 - 2.8 kWh/m³ (Isobaric PX) |
| Footprint & Installation | Massive civil structures, 24+ mos build | Dispersed skids, site interconnects | Factory containerized / Modular, plug-in |
| Boron Removal Integrity | Moderate (Depends on steam carryover) | Single-pass baseline (<1.5 mg/L) | Multi-stage pH adjustment (<0.5 mg/L WHO) |
| Automation Level | Labor intensive, boiler monitoring | Semi-automated PLC | Fully unmanned SCADA, IoT remote diagnostic |
Macro Engineering Framework
End-to-End Solutions Across Core Global Industries
From deep-sea resource extraction to high-density coastal urban centers, our large-scale systems deliver water resilience.
Municipal Coastal Utilities
Providing independent water grids for arid coastal cities, island hotels, and port complexes with daily production reaching 10,000 to 50,000+ cubic meters per train.
Oil & Gas Flowback & ZLD
Treating highly corrosive, oil-contaminated fracturing fluids using heavy-duty DTRO disc-tube configurations to reach oil content ≤5 mg/L and suspended solids ≤1 mg/L.
Semiconductor 18.2 MΩ·cm
Pre-desalinated water polished through multi-pass reverse osmosis and continuous electrodeionization (RO+EDI) delivers ultrapure water meeting SEMI E1.1 requirements.
Mining & Heavy Metallurgy
Overcoming zero discharge regulations by transforming hyper-saline metallurgical process bleed into crystallized commercial-grade cake while recovering 95%+ water for reuse.
Smart Manufacturing & Scale
China Factory 4.0: Supply Chain Resilience & Precision Execution
Combining world-class component supply chains, automated orbital welding, and integrated factory acceptance testing (FAT).
Super Duplex Metallurgy (2507 / 1.4410)
High-chloride seawater systems demand flawless metallurgy. Tongjie utilizes automated CNC orbital welding with full argon back-purging for all 2507 super duplex stainless steel high-pressure pipework, eliminating pitting and crevice corrosion across high-pressure runs up to 85 bar.
- Pitting Resistance Index: PREN ≥ 42 verified
- Non-Destructive Testing: 100% X-ray / Dye penetrant inspection
- Pressure Rating: Tested to 1.5x design burst threshold
Turnkey Containerized Modularization
Rather than risky field installation in remote geographies, our systems are pre-assembled inside marine-grade ISO standard containers (corrosion protection C5-M). Piping, pumps, electrical cabinets, and instrumentation are fully plumbed and wired within our Shanghai facility.
- Reduced Site Labor: 85% shorter installation cycle
- Structural Integrity: Standard shipping compatibility (20ft / 40ft HQ)
- Climate Insulation: Integrated HVAC and anti-condensation interior
Digital Twin SCADA & Cloud FAT
Every industrial desalination unit undergoes comprehensive hydraulic wet testing prior to packing. Clients and independent inspectors monitor live flow rate, conductivity, temperature, and pump vibration data via high-definition cloud-streamed factory acceptance testing (FAT).
- PLC Protocols: Siemens S7-1500 / Allen-Bradley Rockewell
- Remote Diagnostics: 4G/5G encrypted IoT gateway access
- FAT Transparency: Comprehensive sensor log verification
17+
Years Continuous Engineering (Est. 2010)
38+
Granted Patents & Process Copyrights
99.8%
Average Permeate Salt Rejection Efficiency
1,000+
Global Industrial & EPC Client Partners
EPC & Developer Guide
Fulfilling Procurement Demands for Global Water Infrastructure
A rigorous five-stage delivery roadmap designed to derisk capital investment from raw water testing to multi-year O&M.
01. Raw Feed Hydro-Chemical Characterization
Global engineers provide raw water ionic matrices (TDS, silica, barium, strontium, COD, TSS). We utilize ROSA, IMSDesign, and custom projection engines to map out scaling potentials and verify critical recovery boundaries.
02. Process Simulation & Mass Balance
We deliver preliminary process flows, P&ID blueprints, equipment BOMs, power requirement estimations, and hydraulic mass balances prior to any formal contractual commitment, giving EPC contractors complete design transparency.
03. Precision Modular Fabrication
Skids are constructed under strict ISO 9001 quality supervision. Major components (Toray, DuPont, Hydranautics membranes; Danfoss, Grundfos, Cat high-pressure pumps) are matched precisely to engineering specifications.
04. Hydraulic Factory Acceptance Testing (FAT)
Full-scale water testing in our factory eliminates on-site integration friction. Control loops, safety relief interlocks, emergency shutdowns, and instrument calibrations are proven compliant before container loading.
05. Site Commissioning & Dual Handover
Our multilingual commissioning engineers deploy on-site to direct intake connection, high-pressure line purging, and final parameter stabilization, followed by comprehensive on-site operator training.
06. Lifecycle Spare Parts & Remote IoT Support
Through our dedicated Global Service framework, operators receive secure real-time operational advice, scheduled membrane replacement packs, anti-scalant supplies, and remote firmware optimization.
Compliance Framework
Localization Support, CE Safety & Multi-Standard Verification
Ensuring frictionless site permitting, electrical grid compatibility, and regulatory alignment in North America, Europe, MENA, and APAC.
Global Electrical Compliance
Electrical control enclosures are custom-configured for 380V/50Hz, 440V/60Hz, 480V/60Hz, or specialized voltages. Components comply strictly with CE Low Voltage (LVD) & EMC directives, with optional UL/CSA panel build certifications.
ASME & Pressure Vessel Safety
High-pressure membrane housings (FRP, up to 1200 PSI) and pressure relief manifolds conform to ASME Section X and ASME B31.3 chemical plant piping codes, assuring complete operational safety under maximum hydraulic pressure.
Drinking Water Sanitary Standards
All wetted post-treatment materials, food-grade epoxy coatings, remineralization calcite media, and permeate pipe lines comply with NSF/ANSI 61 and WHO potability regulations for human consumption safety.
High-Recovery & Specialty Lines
Industrial Water Separation & Zero Discharge Assemblies
Custom ODM solutions engineered for difficult brines, offshore deployments, and sub-micron purity requirements.
CE Certification China Suppliers Factory Ultra-Pure Water System for Semiconductor & Microelectronics Manufacturing - 18.2 MΩ·cm Resistivity Suppliers, Manufacturer
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Wholesale Compact Seawater Desalination System from China Suppliers - Efficient Factory Solutions for Small Freshwater Needs Supplier, Manufacturers
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Wholesale High-Pressure Membrane Concentration System in China - Top Suppliers & Factory for DTRO & STRO Technology Factory, Supplier
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China China Suppliers: Factory-Integrated Containerized Seawater Desalination Plants for Off-Grid Solar Solutions Supplier, Manufacturer
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OEM China Suppliers Ultra-Pure Water System for Semiconductor & Electronics Manufacturing | Quality Factory Solutions Factory, Suppliers
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CE Certification China Oilfield Fracturing Flowback Fluid Treatment System - Reliable Suppliers & Factory Solutions Factories, Manufacturer
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OEM OEM Precision Manufacturing: China Suppliers and Factory for Customized Environmental Water Treatment Solutions Factory, Manufacturer
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CE Certification China Oilfield Fracturing Flowback Fluid Treatment System - Suppliers & Factory for Zero-Discharge Solutions Factories, Factory
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Technical FAQ
Frequently Asked Engineering & Procurement Inquiries
In-depth responses covering process feasibility, recovery limits, metallurgy, and turn-key logistics.
What parameters are essential to size a large-scale seawater RO or industrial wastewater plant?
To provide an accurate technical and commercial proposal, our engineering team requires:
- Comprehensive Raw Water Chemistry: Total Dissolved Solids (TDS), conductivity, pH, hardness (Ca²⁺, Mg²⁺), heavy metals, reactive silica, oil content, and Silt Density Index (SDI₁₅).
- Operating Conditions: Annual feed temperature swings (minimum and maximum), available intake source (beach well vs. open ocean intake).
- Target Permeate Spec & Recovery: Required permeate volume (m³/day), potable WHO parameters, or ultra-pure/boiler feed benchmarks.
- Utility Conditions: Power availability (voltage, frequency: 50Hz/60Hz), available plant footprint, and preference for containerized vs. skid-mounted architecture.
How does isobaric energy recovery reduce operating costs in large-scale plants?
In standard reverse osmosis, high-pressure concentrate (brine) exits the system at roughly 60 to 70 bar, retaining significant hydraulic energy. Rather than dissipating this pressure through a throttling valve, isobaric pressure exchangers (PX) transfer the energy directly from the concentrate stream to the incoming raw seawater with greater than 97% transfer efficiency. This slashes high-pressure booster pump horsepower by up to 60%, delivering typical Specific Energy Consumption (SEC) of 2.2 to 2.8 kWh per cubic meter of clean water produced.
What is the advantage of factory-containerized plants versus stick-built civil construction?
Containerized plants consolidate engineering, assembly, pipe-fitting, wiring, and pressure verification inside our climate-controlled factory in Shanghai. This eliminates reliance on expensive, variable-quality local field labor, mitigates severe weather delays, and shortens on-site commissioning to mere days. Units arrive fully tested and certified, requiring only main raw intake, discharge brine, permeate delivery, and power drop connections.
Can your high-salinity and DTRO systems handle harsh oilfield flowback?
Yes. Our heavy-duty produced water trains incorporate primary coalescing oil-separation, chemical softening to precipitate barium, strontium, and calcium, followed by open-channel Disc Tube Reverse Osmosis (DTRO). DTRO geometry resists fouling and operates comfortably at fluid pressures exceeding 120 bar, reliably bringing oil-and-grease concentrations down below 5 mg/L and suspended solids below 1 mg/L for reinjection compliance or reuse.
What international manufacturing and management credentials does Tongjie maintain?
Tongjie holds complete ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and ISO 45001 (Occupational Health & Safety) certifications, alongside official European CE Conformity for machinery, pressure equipment, and low-voltage electrical systems. Tongjie is designated as a National High-Tech Enterprise, holds Chinese Class II contracting qualifications in environmental protection and electromechanical installation, and maintains over 38 proprietary technology patents.