Featured Heavy-Duty Brine Concentration & ZLD Units
Pre-engineered, modular membrane concentration modules deployed for extreme osmotic pressure, hyper-saline wastewater recovery, and coastal freshwater generation.
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High-Pressure DTRO & STRO Membrane Concentration Systems (Up to 160 Bar)
Engineered with open-channel disk-tube geometries to resist scaling and handle high-COD, hypersaline streams.
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High-Salinity Wastewater Volume Reduction & Zero Liquid Discharge (ZLD) Systems
Combines membrane pre-concentration with MVR evaporation to cut liquid discharge volume by up to 98%.
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CE-Certified Osmosis-Assisted Reverse Osmosis (OARO) Hypersaline Systems
Advanced thermodynamic staging designed to overcome severe hydraulic limitations at ultra-high TDS levels.
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Compact Industrial Seawater Desalination Equipment for Coastal & Port Utilities
Containerized SWRO modules featuring energy recovery devices (ERD), supplying continuous boiler and process water.
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Water Economics & Strict Effluent Regulations in Greater Nagoya
Navigating environmental compliance, high municipal water utility tariffs, and ecological mandates within the premier manufacturing hub of Japan.
The Chukyo Industrial Hub: Center of Global Precision Manufacturing
The Greater Nagoya Metropolitan Area (encompassing Aichi, Gifu, and Mie Prefectures) forms the epicentre of Japan's Chukyo Industrial Zone. Generating the highest industrial output in Japan for over four consecutive decades, Nagoya hosts world-leading automotive original equipment manufacturers (OEMs), Tier-1 automotive parts suppliers, aerospace assembly lines, precision robotics manufacturers, and next-generation lithium-ion battery gigafactories.
These advanced manufacturing processes demand tremendous volumes of high-purity water—ranging from demineralized water (conductivity < 0.1 μS/cm) for electrodeposition (e-coat) paint finishing lines to ultrapure water (resistivity > 18.2 MΩ·cm) for power semiconductor etching and silicon wafer washing.
Simultaneously, manufacturing plants in Nagoya face severe municipal water supply charges alongside stringent environmental discharge caps under the Water Pollution Prevention Act of Japan (Suishitsu Odaku Boshi-hō) and prefectural stringent standards (Uwanose Kijun) enacted to safeguard Ise Bay and Mikawa Bay against eutrophication and toxic heavy metal accumulation.
| Compliance Parameter | National Standard | Nagoya / Ise Bay Strict Limit |
|---|---|---|
| Total Nitrogen (T-N) | 120 mg/L (daily avg. 60) | ≤ 20 - 30 mg/L |
| Total Phosphorus (T-P) | 16 mg/L (daily avg. 8) | ≤ 2.0 mg/L |
| Chemical Oxygen Demand (COD) | 160 mg/L (daily avg. 120) | ≤ 25 - 50 mg/L |
| Heavy Metals (Ni, Cr, Cu, Zn) | 1.0 - 2.0 mg/L | ≤ 0.1 - 0.5 mg/L |
| Target Recovery Ratio | Open Loop / Discharge | ≥ 85% – 98% (ZLD Loop) |
Avg. Opex Reduction with RO/EDI
DTRO Operational Pressure Range
Water Recovery via ZLD Architecture
Purified Water Conductivity
High-Salt Wastewater Treatment & ZLD Technical Architecture
Deploying advanced multi-tier membrane concentration and mechanical vapor recompression to achieve zero liquid discharge with minimal lifecycle power consumption.
Chemical Softening & Pre-Treatment
High-efficiency soda ash-lime or sodium hydroxide softening coupled with tubular microfiltration (TMF). Eliminates scaling multivalent cations (Ca²⁺, Mg²⁺, Ba²⁺, Sr²⁺) and colloidal silica (< 10 mg/L), preventing downstream reverse osmosis membrane irreversibility.
DTRO & STRO High-Pressure Brine Squeeze
Disc Tube Reverse Osmosis operating from 75 to 160 bar. Features an unobstructed 180° fluid diversion channel that suppresses boundary-layer concentration polarization, pushing total dissolved solids (TDS) concentrations from 35,000 mg/L up to 120,000–140,000 mg/L.
MVR Evaporation & Salt Crystallization
Mechanical Vapor Recompression (MVR) uses single-stage centrifugal compressors to recycle secondary steam latent heat. Achieves thermal specific energy ratings under 30 kWh/m³. Residual concentrated liquor precipitates crystallized dry salts (Na₂SO₄ / NaCl) for industrial byproduct sale.
Continuous RO + CEDI Ultrapure Loop
Double-pass Reverse Osmosis paired with Continuous Electro-deionization (CEDI). Operates without corrosive chemical regenerants, producing continuous water resistivity of 15 to 18.2 MΩ·cm with zero hazardous acid/caustic neutralization requirements.
Automated CIP & Flux Restoration
Integrated Cleaning-in-Place (CIP) systems equipped with PLC-guided temperature control, chemical metering, and automated pH feedback. Recovers over 95% of original clean water membrane flux after treating challenging automotive surface-treatment effluents.
Modular Skid & Containerized Engineering
Complete structural pre-fabrication inside ISO container footprint (20ft/40ft) or structural 304/316L stainless-steel skids. Reduces on-site mechanical and civil engineering work in Japanese industrial zones by over 70%.
Global Procurement Benchmarks & Japan Localization Support
Bridging international cost-efficient OEM manufacturing with the stringent engineering tolerances, documentation standards, and electrical safety codes demanded by Japanese plant operators.
| Engineering Domain | Standard International Spec | Tongjie Nagoya Localization Spec |
|---|---|---|
| Electrical / Voltage | 380V/480V, 50Hz/60Hz | 200V / 400V 3-Phase, 60Hz (Central Japan) |
| Control Systems | Generic PLC / HMI | Mitsubishi Electric iQ-R/FX5U or Omron Sysmac |
| Piping & Metallurgy | ASTM A312 TP304 / TP316 | JIS G3459 SUS304 / SUS316L / Super Duplex 2507 |
| Welding & NDT | Standard GTAW / TIG | JIS Z 3801 Inspection + Boroscope weld log |
| Quality & Safety | CE / ISO 9001 | ISO 9001 / 14001 / 45001 + METI Compliance Dossier |
Mitigating Total Cost of Ownership (TCO) for Enterprise EPCs
When multinational conglomerates and Japanese EPC contractors source high-capacity purified water systems and ZLD plants, procurement risk is not limited to capital expenditure (CAPEX). It hinges upon operational longevity, membrane replacement intervals, thermodynamic efficiency, and responsive maintenance.
Tongjie operates as a specialized OEM/ODM engineering powerhouse. By pre-assembling, pre-wiring, and subjecting every system to rigorous Factory Acceptance Testing (FAT) prior to export, we ensure zero hydraulic mismatch at installation sites in Nagoya, Kariya, Toyota City, and Komaki.
Each skid arrives accompanied by comprehensive bilingual documentation: P&ID blueprints, electrical schematics, operational SOPs, material test certificates (MTRs), and full instrument calibration certificates.
Five-Stage Precision Execution Roadmap
From raw water assay analysis to post-commissioning lifecycle telemetry support.
Water Profiling & Simulation
Complete ion chromatography profiling, ROSA/WAVE projection, osmotic modeling, and scaling potential quantification.
Process & P&ID Blueprinting
3D CAD skid optimization, footprint consolidation, HAZOP analysis, and JIS-compliant electrical component selection.
Shanghai In-House Fabrication
Certified orbital welding, passivated piping racks, high-pressure hydrostatic testing, and complete dry-run FAT validation.
Site Commissioning & SAT
Containerized drop-in installation, interconnecting piping, PLC logic integration, and localized operator hand-over training.
Complete Production Line Portfolio Available for Nagoya
Select from our modular ultrapure water treatment units, industrial demineralizers, chemical brine concentrators, and closed-loop recycling skids.
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Semiconductor & Electronics Ultra-Pure Water (UPW) Systems
Delivers 18.2 MΩ·cm water purity with ultra-low TOC (< 2 ppb) and trace particle filtration for semiconductor wafer fabs.
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Eco-Friendly Closed-Loop Industrial Effluent Reclamation Skids
Automated biological and membrane polishers converting manufacturing wastewater into re-usable boiler feed water.
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cGMP Pharmaceutical Purified Water & Water for Injection (WFI) Skids
Designed to cGMP, USP, and Japanese Pharmacopoeia (JP) standards with sanitary 316L orbital welding and online TOC.
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Industrial Demineralized Water Equipment (Low-Conductivity RO/EDI)
Provides high-throughput demineralized feeds for thermal power boilers, automotive painting lines, and metal surface coating.
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High-Ratio Industrial Wastewater Reuse & Recovery Systems
Dual-membrane (UF+RO) process recovery achieving >90% water recovery from complex automotive and chemical washing baths.
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Heavy Organic & Hydrocarbon Flowback Wastewater Skids
Combined oil-water separation, DAF, and DTRO concentration built into heavy-duty transportable containers for harsh conditions.
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High-Efficiency Thermal Brine Concentration & Evaporator Skids
Forced-circulation falling film evaporation modules with titanium grade heat exchangers for high chloride and sulfate streams.
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Factory-Direct Industrial RO & EDI Demineralized Water Units
Standardized skid-mounted pure water modules with short lead times, optimized for Japanese factory retrofits and capacity expansions.
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Frequently Asked Questions by Industrial Water Engineers
Addressing operational parameters, regulatory compliance, membrane longevity, and international collaboration protocols.
Conventional spiral-wound RO membranes use narrow feed spacers that entrap suspended solids and bio-foul rapidly when treating wastewater with high Chemical Oxygen Demand (COD) or scaling potential. DTRO utilizes open hydraulic channels with disk-shaped deflector plates, generating high-velocity turbulence that continuously cleans the membrane surface, operating reliably at pressures up to 160 bar and handling TDS exceeding 100,000 mg/L without irreversible clogging.
Central Japan (including Nagoya and Aichi Prefecture) operates on a 200V/400V 60Hz grid. All high-pressure pumps (e.g., Grundfos, Danfoss), variable frequency drives (VFDs), electric valves, and transformers are specified for 60Hz operation. Furthermore, we integrate Japanese-standard PLCs (Mitsubishi iQ-F/iQ-R or Omron) and touchscreens with bilingual Japanese/English interfaces, conforming to JIS and METI safety regulations.
Due to Nagoya's tiered municipal industrial water intake fees and sewer discharge surcharges—combined with high third-party hazardous chemical liquid hauling costs—a Tongjie ZLD or high-ratio water reuse plant typically achieves full payback within 18 to 36 months by recovering over 90–95% of purified water back into the factory's production loop.
Tongjie provides a standard 12–24 month comprehensive warranty on all fabricated skids. All critical consumable membranes, cartridge filters, and pump seals utilize standardized dimensions readily available worldwide. Additionally, our intelligent IoT control modules support secure encrypted remote telemetry, enabling Shanghai-based senior process engineers to assist on-site teams in Nagoya in real time.
Deploy World-Class Industrial Water Systems in Greater Nagoya
Partner with Shanghai Tongjie Environmental Protection Technology Co., Ltd. for custom-designed, factory-tested, and cost-effective membrane water treatment, demineralized water production, and ZLD systems.