High-Capacity Separation Systems & Modular Skid Units
Factory-tested, skid-mounted, and containerized membrane solutions customized for EPC contractors, industrial chemical complexes, and utility operators.
Global Water Scarcity & The Paradigm Shift in Industrial Water Treatment
Modern manufacturing faces stringent regulatory thresholds, rising municipal withdrawal tariffs, and geopolitical water security mandates. Sourcing reliable ODM/OEM water purification equipment has shifted from basic procurement to mission-critical infrastructure investment.
Zero Liquid Discharge Mandates
Global environmental agencies—including the US EPA, EU Industrial Emissions Directive (IED), and China's "Three Lines, One Permit"—mandate aggressive wastewater recovery. Industrial facilities must achieve near-complete volumetric reduction, driving demand for multi-stage membrane brine concentrators, high-pressure disc tube reverse osmosis (DTRO), and mechanical vapor recompression (MVR) thermal crystallization.
- Up to 98.5% total volumetric water recovery
- Separation of valorized salts (Na₂SO₄, NaCl)
- Mitigation of deep-well injection hazards
Decentralized Water Security
Power plants, microelectronics foundries, chemical plants, and island resorts cannot rely solely on stressed municipal utility grids. Containerized, plug-and-play seawater reverse osmosis (SWRO) systems and decentralized demineralization skids ensure autonomous freshwater production directly from raw seawater, brackish groundwater, or industrial surface water.
- Standardized 20ft & 40ft ISO container skids
- Energy Recovery Devices (ERD) reducing OpEx >45%
- Unattended PLC & remote SCADA monitoring
Ultra-Purity Process Demands
The acceleration of advanced microelectronics, semiconductor wafer fabrication, and biotechnology requires ultrapure water (UPW) reaching 18.2 MΩ·cm resistivity, with sub-ppb limits for total organic carbon (TOC), dissolved silica, and particulate counts. Meeting these specifications demands integrated double-pass RO, electrodeionization (EDI), membrane degasification, and 185nm UV oxidation trains.
- Conductivity < 0.055 μS/cm, Resistivity 18.2 MΩ·cm
- TOC levels consistently kept < 1 ppb
- Chemical-free continuous EDI polishers
Customized Process Architecture Across Industrial Sectors
No two feed water chemistry profiles are identical. Tongjie’s engineering team calculates mass balances, osmotic pressures, and scaling tendencies (LSI/SDSI) to deploy specific flow diagrams for challenging duty conditions.
Oil & Gas Produced Water & Fracturing Flowback
Treating shale drilling flowback and produced formation water requires exceptional tolerance to emulsified free oils, suspended silica, and variable salinity. Our specialized skid packages integrate induced gas flotation (IGF), walnut shell ceramic filtration, chemical softening, and open-channel Disc Tube Reverse Osmosis (DTRO).
- Residual oil content controlled to ≤ 5 mg/L
- Total suspended solids (TSS) ≤ 1 mg/L for reinjection
- Extreme desert climate compatibility (Middle East/Central Asia)
Pharmaceutical Purified Water & WFI Generation
Engineered strictly to US FDA 21 CFR Part 11, cGMP, and European Pharmacopoeia (EP) specifications. Fabricated exclusively with orbital-welded sanitary 316L stainless steel, zero dead-leg valves, continuous conductivity/TOC instrumentation, and automated periodic hot-water sanitization (85°C).
- Complete DQ, IQ, OQ, PQ documentation supplied
- Double-pass RO + Electrodeionization (EDI) stack
- Endotoxin reduction to < 0.25 EU/mL
Chemical & Smelting High-Salinity Brine Concentration
Complex effluent streams featuring heavy metals, elevated sulfates, and high silica cause rapid fouling in conventional RO. Tongjie applies high-pressure reverse osmosis (HPRO up to 120 bar) and Osmosis-Assisted Reverse Osmosis (OARO) to concentrate brine up to 150,000–180,000 mg/L TDS before passing to crystallization.
- Reduces thermal evaporator hydraulic duty by 60%
- Tubular cross-flow UF for total silica precipitation
- Drastic operational cost reduction per ton treated
Food, Beverage & Dairy Processing Water
Delivering sanitized, mineral-balanced ingredient water that protects flavor integrity while eliminating pathogenic organisms, micro-plastics, and pesticides. Systems integrate activated carbon filtration, sodium softening, RO membranes with NSF/ANSI 61 certification, and final ozone/UV polishing loops.
- Automated Clean-in-Place (CIP) sanitization cycles
- Continuous conductivity & chlorine oxidation logging
- Food-grade stainless steel & PVDF piping runs
Municipal Effluent Reclamation & Boiler Feed
Converting secondary treated municipal wastewater into high-grade boiler feedwater and cooling tower make-up. Multi-barrier ultrafiltration (UF) blocks colloidal silt and micro-pollutants, followed by brackish water reverse osmosis (BWRO) to drop conductivity below 10 μS/cm.
- Prevents cooling tower scaling & legionella buildup
- High-flux PVDF hollow fiber UF pretreatment
- Significant reduction in municipal fresh intake fees
Remote Island & Offshore Seawater Desalination
For island resorts, maritime ports, and off-grid mining camps. Marine-grade containerized SWRO units equipped with duplex stainless steel high-pressure piping (2205/2507), isobaric energy recovery turbines, and automated post-treatment remineralization for immediate potable tap water.
- Low specific energy consumption: < 2.8–3.2 kWh/m³
- Pre-plumbed, pre-wired, factory FAT load-tested
- Direct connection to diesel gensets or solar microgrids
China Factory Supply Chain Resilience & Shanghai Engineering Hub
Shanghai Tongjie Environmental Protection Technology Co., Ltd. (est. 2010) brings together process chemistry, mechanical fabrication, electrical engineering, and automated testing under one ISO-certified roof.
Full Vertical Integration
We do not operate as mere trading aggregators. Tongjie maintains internal steel laser cutting, CNC tube bending, automatic orbital pipe welding, sandblasting, polyurethane coating, and electrical control cabinet wiring. This minimizes reliance on third-party sub-contractors, guaranteeing tighter dimensional tolerances and predictable production lead times.
Class II Contracting Qualifications
Holding official Class II contracting qualifications in Environmental Protection Engineering and Mechanical & Electrical Installation, Tongjie’s engineering team is qualified to draft process P&IDs, perform pipe hydraulic stress calculations, write custom Siemens/Allen-Bradley PLC logic, and conduct full pressure vessel load tests before factory release.
Stringent FAT & Risk Mitigation
Every system undergoes 100% full-flow wet testing at our Shanghai assembly plant. We formulate simulated chemical feed water to benchmark flux rates, measure differential pressure across membrane housings, check transducer calibrations, and prove emergency shut-down sequences, ensuring turnkey startup on-site.
Next-Generation Separation: AI Integration & Low-Carbon Recovery
Membrane separation is evolving from passive physical filtration into intelligent, self-optimizing thermodynamic systems. Tongjie’s R&D engineering unit is actively pioneering 4 distinct technology vectors.
AI-Driven Flux & Fouling Prediction
Integrating IoT telemetry edge microcontrollers with digital twin machine learning models. Algorithms track feed temperature, trans-membrane pressure (TMP), and conductivity shifts in real time to predict biofouling or mineral scale formation 72 hours before it impacts permeate flow, automatically scheduling precision chemical cleaning (CIP).
Osmosis-Assisted RO (OARO) Scaling
Conventional RO reaches thermodynamic limits around 70–80 bar osmotic pressure. Tongjie’s patented OARO systems utilize a staged draw solution on the permeate side to reduce effective net driving pressure, allowing membrane concentration of brine up to 180,000 mg/L TDS at significantly lower electrical energy than thermal evaporators.
Electrified Zero-Liquid Discharge
Moving away from energy-intensive fossil-fueled steam boilers for brine crystallization. Our engineering roadmap optimizes the combination of high-pressure electrodialysis reversal (EDR) with specialized Mechanical Vapor Recompression (MVR) falling-film evaporators powered entirely by green electricity.
Direct Solar/Wind DC Microgrid SWRO
Overcoming power grid instability in remote desert and island locations. Tongjie has commercialized variable-frequency containerized SWRO units that match pump rotational speeds directly with the dynamic, fluctuating power output of off-grid solar photovoltaic (PV) arrays without costly battery banks.
Global Engineering Standards, Local Compliance
Deploying equipment internationally requires rigorous adherence to local structural, electrical, and environmental codes. Tongjie packages arrive complete with export-compliant documentation, third-party certifications, and international field service readiness.
- CE Machinery Directive & Low Voltage Conformity: Certified for EU, UKCA, and Commonwealth trade territories with complete Declaration of Conformity.
- Electrical Grid Compatibility: Multi-voltage motor controls designed for 380V/400V/415V at 50Hz, or 460V/480V at 60Hz. UL 508A or IEC 60204 panel layouts available.
- Pressure Vessel & Piping Codes: ASME Boiler and Pressure Vessel Code Section X (FRP vessels), ASME B31.3 process piping, and EN 13445 compliance options.
- Remote SCADA IoT Commissioning: Field-proven 4G/5G secure VPN routers allow Shanghai senior process specialists to support site commissioning, tune PID loops, and troubleshoot operations anywhere in the world.
ODM & White-Label Collaboration Framework
We act as the specialized back-end engineering, fabrication, and testing factory for global EPC companies, water utility brands, and multinational chemical contractors.
Frequently Asked Technical & Procurement Questions
Detailed answers to the critical sizing, operational, and commercial questions asked by international engineering consultants and plant procurement teams.
What essential feed water analysis parameters are required to generate an accurate ODM system design? +
How does a containerized modular seawater desalination plant achieve rapid plug-and-play commissioning? +
Why is Disc Tube Reverse Osmosis (DTRO) superior to spiral-wound RO for oilfield produced water and landfill leachate? +
What validation and documentation packages are provided for pharmaceutical purified water and WFI systems? +
What are the key commercial terms, lead times, and private-labeling options for international ODM distributors? +
Which enterprise qualifications, design patents, and system warranties back Tongjie's manufacturing quality?
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Shanghai Tongjie Environmental Protection Technology Co., Ltd. is officially certified as a National High-Tech Enterprise and a Shanghai "Specialized and Sophisticated" Enterprise. We maintain audited management systems under ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and ISO 45001 (Occupational Health & Safety), along with full CE conformity for European markets. The company holds Class II General Contracting Qualifications in Environmental Protection Engineering and Mechanical & Electrical Equipment Installation, backed by 38+ proprietary patents covering high-recovery brine concentration, osmosis-assisted membranes, and DTRO flow distribution. All equipment comes with an international 12-to-24-month comprehensive mechanical and process performance warranty supported by lifetime spare parts availability and remote telemetry troubleshooting.
Brine Reduction, Ultrapure Water & Resource Recovery
Explore additional specialized separation and water recovery equipment built to customer process criteria and factory tested in Shanghai.
