Wastewater Reuse
OEM High-Ratio Water Reuse Process Equipment from China: Reliable Suppliers and Factory Solutions for Industrial Wastewater Treatment Factory, Manufacturers
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Primary Engineered Machinery
High-Spec Demineralization & Distillation Core Assets
Pre-engineered skids, containerized modules, and precision membrane separation systems factory-tested to international ASTM, cGMP, and ASME BPE guidelines.
Eco ODM System
Wholesale Eco-Friendly Water Treatment Solutions from China ODM Suppliers and Factory - Your Partner in Innovation Factories, Manufacturer
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SWRO Container
ODM China Suppliers' Factory-Direct Containerized Seawater Desalination Plants for Off-Grid Solar Solutions Factory, Suppliers
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Solar-Ready SWRO
Wholesale China Suppliers of Factory-Integrated Containerized Seawater Desalination Plants for Off-Grid Solar Solutions Factories, Manufacturer
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OARO Technology
CE Certification Osmosis-Assisted Reverse Osmosis Factory, Suppliers
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Oilfield Systems
CE Certification China Oilfield Fracturing Flowback Fluid Treatment System - Reliable Suppliers & Factory Solutions Factories, Manufacturer
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Physical Degassing
CE Certification China Suppliers Factory Deoxygenation Membrane Equipment for Physical Degassing and Removing Dissolved Oxygen from Water Factory, Manufacturers
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UF + RO Trains
CE Certification High-Ratio Water Reuse Equipment Suppliers in China - Advanced Pretreatment, UF & RO Process Factory Factories, Manufacturer
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Industrial Chemistry & Engineering Whitepaper
Distilled Water vs. Demineralized Water: Purity Benchmarks
Understanding the distinction between phase-change distillation and ion-exchange/membrane demineralization is vital for determining OPEX, CAPEX, and thermodynamic viability across high-throughput industrial plants.
< 0.055
μS/cm Ultrapure Resistivity (18.2 MΩ·cm)
> 99.8%
Ion Rejection Ratio in RO+EDI Systems
< 10
ppb TOC in Pharma WFI Generation
38+
Patented Separation & DTRO Architectures
| Evaluation Parameter | Demineralized Water (DM / DI) | Distilled Water (Phase-Change Distillation) | Modern Hybrid (RO + EDI + Polishing) |
|---|---|---|---|
| Primary Removal Mechanism | Ion-exchange resins (SAC/SBA) & electrical ion migration | Thermal evaporation & steam condensation (Multi-Effect / VCD) | Semi-permeable cross-flow RO membranes followed by Continuous EDI |
| Conductivity & Resistivity | 0.1 – 1.0 μS/cm (1.0 – 10 MΩ·cm) | 0.5 – 3.0 μS/cm (Dependent on atmospheric CO2 absorption) | ≤ 0.055 μS/cm (Up to 18.2 MΩ·cm) |
| Non-Ionic Contaminant Removal | Poor (Does not eliminate pyrogens, bacteria, or uncharged silica) | Superior (Sterile, pyrogen-free; rejects viruses and heavy organics) | Complete (UF pretreatment + dual-pass RO membrane barrier + UV TOC) |
| Thermal Energy Input | None (Ambient pressure/hydraulic pump driven) | High (Latent heat of vaporization: ~2260 kJ/kg without MVR recovery) | Extremely Low (Hydraulic pressure 12–16 bar; zero steam dependency) |
| Chemical Regeneration Footprint | High (Requires bulk HCl/NaOH; generates corrosive chemical rinse waste) | None (Thermal-only cycle; descaling acids for heat exchangers) | Zero Chemical Reagents (Continuous direct electric regeneration) |
| Target Manufacturing Applications | High-pressure boiler feed, electroplating, chemical bulk rinsing | Injectables, WFI (Water for Injection), active pharmaceutical APIs | Advanced microelectronics, lithium-ion battery cells, cleanrooms |
Engineered Cross-Sector Systems
Macro-Industry Solutions: Engineered to Compliance
Tongjie engineers customized process trains engineered to strict end-user compliance standards, balancing recovery rates, footprint, and maintenance lifecycle.
Pharma & Biotech WFI
Multi-effect distillation (MED) columns and cGMP-compliant RO+EDI systems built in 316L stainless steel with orbital welds (Ra < 0.4 μm) and continuous hot-water sanitization (85°C) to prevent biofilm growth.
Compliance: USP <645>, Ph. Eur., Chinese Pharmacopoeia (ChP)
Semiconductor & Battery Giga-Lines
High-resistivity ultrapure water skids integrating membrane contactor deoxygenation (DO < 1 ppb), vacuum physical degassing, and nuclear-grade polishing beds to safeguard wafer rinsing and cathode slurries.
Performance: 18.2 MΩ·cm @ 25°C | TOC < 1 ppb
Power & High-Pressure Boilers
Continuous Demineralized water trains engineered for supercritical turbines, preventing silica vaporization and copper-nickel tube corrosion through selective ion-exchange and non-chemical degassing.
Silica (SiO2) Leakage < 5 μg/L | Conductivity < 0.1 μS/cm
Advanced Manufacturing Ecosystem
China Factory 4.0: Supply Chain Resilience & Precision
Shanghai Tongjie operates a fully integrated industrial manufacturing campus in Shanghai Jiading, bringing process design, CNC tube bending, robotic orbital welding, and automated FAT trials under one roof.
Precision Fabrication
Automated orbital TIG welding for ASME BPE sanitary pipe runs, paired with full boroscopic weld inspection, ferrite checks, and automated pickling-passivation bays.
Tier-1 Component Chain
Direct volume procurement with Toray, DuPont FilmTec, Hydranautics, Grundfos, Danfoss, and Siemens controls delivers cost savings and genuine provenance.
100% Wet Pre-Shipment FAT
Every skid undergoes complete hydraulic pressure, electrical safety, loop checking, and permeate purity verification under load before container loading.
Digital Twin & Telemetry
Built-in IoT gateways supporting Siemens TIA Portal, Rockwell Automation, and remote cloud telemetry for continuous diagnostics and predictive maintenance.
R&D Innovation Trajectory
Technology Roadmap & Future Horizons (2026–2030)
Tongjie’s dedicated engineering labs are redefining separation science with next-generation materials, closed-loop zero-waste thermal architectures, and AI process control.
Osmosis-Assisted Reverse Osmosis (OARO)
Overcoming conventional RO osmotic pressure ceilings up to 140,000 mg/L TDS. OARO bridges membrane separation with thermal evaporators, slashing energy footprints across chemical zero-liquid-discharge installations.
Target: 40% reduction in thermal brine evaporation CAPEX
Graphene & Biomimetic Membranes
Collaborating with university material research centers to engineer atomic-layer graphene membranes and Aquaporin-structured composites, boosting water flux while resisting chlorine degradation and scaling.
Goal: 3x flux throughput with 99.9% boron rejection
AI Predictive Flux & Smart Antiscaling
Integrating cloud analytics that track feed-water turbidity, temperature, and transmembrane pressure in real time. Adaptive dosing algorithms extend membrane cleaning cycles from 3 to 12+ months.
Deployment: Dynamic SCADA Cloud Integration
Global Regulatory Alignment
Localized Support & Global Compliance Assurance
Procuring capital equipment from China requires adherence to host-country technical, electrical, and environmental regulations. Tongjie delivers end-to-end turnkey qualification.
Turnkey DQ/IQ/OQ/PQ Validation
Comprehensive regulatory binders for pharmaceutical clients, covering weld mapping, boroscope video logs, mill test reports, instrument calibrations, and PLC source code validation compliant with FDA 21 CFR Part 11.
Electrical & Pressure Directives
Full conformance with European CE directives (Machinery Directive 2006/42/EC, Low Voltage 2014/35/EU, PED 2014/68/EU), North American UL 508A industrial control enclosures, and CSA or ASME code vessels.
Lifecycle Service & Local EPC Partnerships
Global field engineer dispatches, local distributor representation in the Middle East, Europe, and Southeast Asia, and 24/7 technical ticketing with guaranteed parts lead times.
Procurement Knowledge Base
Frequently Asked Questions: Enterprise B2B Sourcing
Direct answers for EPC proposal managers, plant engineering heads, and technical buyers sourcing water treatment machinery from China.
What specific technical data is required to generate a process design and mass-balance proposal?
To provide an engineered proposal with membrane sizing, pump duty points, and operational expenditure forecasts, we require:
- Comprehensive Feed Water Analysis: TDS, electrical conductivity, pH, total hardness, silica (reactive & non-reactive), iron, manganese, SDI15, turbidity, TOC, and biological load.
- Target Product Quality: Target resistivity (μS/cm or MΩ·cm), allowable sodium/silica leakage, endotoxin limits (< 0.25 EU/ml for WFI), and application use-case.
- Volumetric Capacity: Daily output (m³/day) and peak hourly demand (m³/h), including expected duty cycles and storage turnover rates.
- Site Utilities & Infrastructure: Available power (voltage, frequency, 3-phase capacity), steam supply (for thermal evaporators/distillation), footprint restrictions, and ambient climate conditions.
How does Tongjie maintain quality control and traceability on custom OEM/ODM machinery?
Tongjie is an ISO 9001:2015 registered manufacturer and a Shanghai Specialized & Sophisticated Enterprise. Every system follows our Gate-Control Quality Framework: incoming raw material verification (spectrometric alloy analysis for SS316L), mechanized orbital welding with logged purging gas concentrations, full weld radiographic or boroscopic inspections, and comprehensive factory functional hydrostatic and wet-loop testing prior to crating and export packaging.
Can containerized SWRO and Demineralized units operate reliably in off-grid or harsh climates?
Yes. Our containerized desalination and demineralization systems are housed within certified ISO sea containers featuring reinforced thermal insulation, high-ambient HVAC systems (rated up to 55°C ambient), anti-corrosion marine epoxy coatings (C5-M specification), and integrated variable frequency drives (VFDs) compatible with variable-load solar PV generators and isolated diesel microgrids.
What is the typical fabrication, testing, and delivery schedule for custom skid-mounted units?
Standard modular skids (such as standard 5–20 t/h RO/EDI trains) carry a factory fabrication and FAT window of approximately 4 to 6 weeks. Highly complex custom engineering builds involving ASME-stamped pressure vessels, specialized hastelloy or super-duplex alloys, and full cGMP documentation require 8 to 12 weeks. International maritime transit from Shanghai port adds 14 to 35 days depending on the final destination port.
What after-sales and commissioning guarantees are provided for global EPC projects?
Tongjie provides dual-track commissioning: on-site field engineer dispatch directly to your project location for mechanical assembly oversight, loop testing, and operator training, or guided remote digital-twin commissioning supported by built-in IoT telemetry. All units carry a standard 12-month commercial warranty, accompanied by guaranteed spare-parts replenishment windows and remote engineering support.
Specialized Membrane Separation Equipment
High-Efficiency Concentration, Degassing & Desalination Skids
Discover Tongjie’s patented zero-liquid-discharge (ZLD) brine concentrators, mobile containerized SWRO units, and precision degasification skids.
Mobile Water Station
Wholesale China Suppliers for Factory-Integrated Containerized Seawater Desalination Plants – Mobile Water Production Solution Factories, Factory
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Degassing Module
China China Suppliers Deoxygenation Membrane Equipment Factory for Efficient Physical Degassing of Water Factory, Supplier
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Brine Concentration
China High-Efficiency Brine Concentration Systems by China Suppliers | Factory Solutions for Wastewater Treatment Suppliers, Manufacturers
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Clean Tech
OEM China ODM Suppliers: Eco-Friendly Water Treatment Solutions from a Trusted Factory for Global Markets Factory, Suppliers
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Compact SWRO
China Compact China Seawater Desalination Equipment by Suppliers - Efficient Reverse Osmosis Factory System for Freshwater Production Factories, Manufacturers
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Island Freshwater
Wholesale Compact Seawater Desalination System - Efficient China Suppliers & Factory Solutions for Freshwater Needs Factories, Supplier
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ZLD Treatment
ODM High Salinity Brine Concentration System - OARO Technology by China Suppliers and Factory for ZLD Treatment Factory, Supplier
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Custom Engineering
ODM China OEM Precision Manufacturing Suppliers - Custom Environmental Water Treatment Equipment Factory Solutions Factories, Supplier
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