What information do you need to size a seawater RO or industrial water treatment system?

Send a recent raw water analysis (TDS, conductivity, hardness, silica, iron/manganese, SDI or turbidity, oil and suspended solids where relevant), feed water temperature range, required product water quality and daily capacity, target recovery, available power supply (voltage/frequency), site conditions and whether you prefer a skid or containerized layout. With this data our engineers prepare a process design, mass balance and equipment list.

How fast can a containerized seawater desalination plant start producing water?

Tongjie containerized seawater RO units are fully prefabricated, assembled and tested in our Shanghai factory before shipment. On arrival the unit only needs basic power, intake and product water connections, so commissioning is short and predictable, which suits emergency supply, remote islands, construction camps and decentralized permanent supply.

Can your oil and gas produced water system meet reinjection requirements?

Yes. The system combines oil removal, softening, disc tube reverse osmosis (DTRO) and concentration. Treated reinjection water reaches oil content of 5 mg/L or less and suspended solids of 1 mg/L or less, enabling zero-discharge reuse of fracturing flowback. The skid-mounted container design can be commissioned within about 15 days and supports unmanned operation with remote monitoring for sites such as the Middle East and Kazakhstan.

Do your pharmaceutical purified water systems support validation?

Our pharmaceutical water systems use pretreatment, precision filtration, RO and EDI, and are built to pharmaceutical engineering practice with online monitoring of conductivity, temperature and flow. Data is recorded and traceable, and documentation is prepared to support your validation and qualification activities.

Do you offer ODM/OEM water treatment equipment?

Yes. We supply ODM/OEM membrane systems for distributors, EPC contractors and equipment brands, including customized capacity, materials, control systems, container layouts, labeling and documentation.

Which certifications and qualifications does Tongjie hold?

Tongjie holds CE certification and ISO 9001, ISO 14001 and ISO 45001 management system certifications. The company is a National High-Tech Enterprise and Shanghai Specialized & Sophisticated Enterprise, holds Class II contracting qualifications in environmental protection engineering and in mechanical and electrical installation, and owns more than 38 invention and utility patents plus software copyrights.

Wholesale Semiconductor Ultrapure Water Suppliers & Manufacturer

Semiconductor & Cleanroom Production Equipment

High-Purity UPW Generation & Brine Recovery Skids

Explore our factory-integrated reverse osmosis, electrodeionization (EDI), and zero liquid discharge modules tailored for wafer fabrication, advanced packaging, and industrial electronics facilities.

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18.2 MΩ·cm

Ultimate Resistivity at 25°C

< 0.5 ppb

Total Organic Carbon (TOC)

38+

Patented Water Technologies

≥ 90%

Wastewater Reclaim Loop Ratio

Industrial Whitepaper · Semiconductor Ultrapure Water

Engineering the Critical Solvent for Nanometer-Scale Fabrication

In modern semiconductor fabs producing sub-7nm, 5nm, and 3nm FinFET or Gate-All-Around (GAA) architectures, ultrapure water is no longer a utility—it is a critical chemical reagent. With wafers undergoing hundreds of wet-chemical etching, chemical-mechanical planarization (CMP), and critical rinse steps, the slightest molecular or ionic contamination results in catastrophic yield collapses.

The Sub-2nm Paradigm Shift

As feature sizes scale down to single-digit nanometers, acceptable impurity levels have transitioned from parts-per-billion (ppb) to parts-per-trillion (ppt) and parts-per-quadrillion (ppq). A single nanoparticle larger than 10 nanometers or residual trace ions of Boron, Silica, or Sodium can cause fatal dielectric breakdown or bridging defects across dense transistor gate patterns.

Elimination of reactive and colloidal silica down to < 0.2 μg/L
Sub-ppt control of metallic ions (Fe, Cu, Ni, Cr, Zn)
Critical control of dissolved oxygen (DO) to < 1 ppb to halt native oxide growth

Global Fab Expansion Demands

Global semiconductor investment driven by AI accelerators, high-bandwidth memory (HBM), and automotive silicon requires modular, rapid-deployment UPW infrastructure. Engineering procurement teams require pre-validated skids that slash onsite construction schedules, de-risk field welding, and seamlessly interface with facility distributed control systems (DCS).

Stringent capital allocation: lower Capex via standardized modular skids
Predictable Opex through advanced high-recovery spiral-wound membranes
Factory Acceptance Testing (FAT) with wet hydraulic and electrical verification

Water Stewardship & Circularity

Leading environmental taxonomies and municipal water-use caps require fabs to reclaim 85% to 95% of their rinse effluent. Semiconductor manufacturers are migrating from linear consumption to complex, closed-loop reclamation architectures combining open-channel DTRO membranes, biological contact oxidation, and chemical crystallization.

Segregation of copper-bearing and solvent-heavy CMP wastewater
Reconcentration of hydrofluoric (HF) acid streams
High-efficiency zero liquid discharge (ZLD) to minimize waste hauling

Macro-System Architecture

End-to-End UPW Generation & Distribution Topology

Shanghai Tongjie integrates chemical conditioning, membrane separation, photo-oxidation, and continuous ion stripping into a tightly orchestrated multi-stage treatment train.

Stage 01

Feed Pretreatment

Multi-media sand filters, active catalytic carbon beds, and high-precision ultrafiltration (UF) modules mitigate silt density index (SDI < 2.5), colloidal foulants, and free chlorine oxidizers.

Stage 02

Primary Demineralization

Two-pass Reverse Osmosis (RO) paired with high-rejection brackish membranes removes > 99.5% of total dissolved solids, monovalent cations, and high-molecular organics.

Stage 03

Continuous EDI Polishing

Electrodeionization cells utilize selective ion-exchange membranes and electrical potential to continuously strip residual ionic species without chemical acid/caustic regeneration.

Stage 04

Catalytic UV & Degassing

185nm TOC destruction UV lamps break down volatile organics, followed by hydrophobic membrane contactors that sweep Dissolved Oxygen (DO) down to sub-1 ppb limits.

Stage 05

Sub-Fab Distribution

Continuous-flow loops constructed of high-purity PVDF (polyvinylidene fluoride) with electro-polished or orbital-welded finishes, terminal ultrafilters, and mixed-bed resin polishers.

Semiconductor UPW Parameter Baseline (SEMI F63 vs. Tongjie Advanced Standard)

Critical Quality Parameter	Standard Industrial Pure Water	SEMI F63 Guideline Baseline	Tongjie Advanced Fab-Grade Target	Analytical Methodology
Resistivity @ 25°C	10.0 – 15.0 MΩ·cm	≥ 18.2 MΩ·cm	18.25 MΩ·cm (Theoretical Limit)	Temperature-compensated online probe
Total Organic Carbon (TOC)	< 50 μg/L (ppb)	< 1.0 μg/L (ppb)	< 0.5 μg/L (ppb)	185nm UV Catalytic Oxidation Analyzer
Dissolved Oxygen (DO)	< 100 μg/L (ppb)	< 10 μg/L (ppb)	< 1.0 μg/L (ppb)	Membrane contactor with Luminescence sensor
Reactive Silica (SiO&sub2;)	< 10 μg/L (ppb)	< 0.5 μg/L (ppb)	< 0.1 μg/L (ppb)	Spectrophotometric / ICP-MS
Trace Boron (B)	< 5.0 μg/L (ppb)	< 0.05 μg/L (50 ppt)	< 0.01 μg/L (< 10 ppt)	High-resolution ICP-MS
Particles (> 0.05 μm)	< 100 counts/mL	< 10 counts/L	< 1 count/L	Laser Particle Optical Profiler
Bacteria / Colony Forming Units	< 10 CFU/100 mL	< 1 CFU/1000 mL	Undetectable / Zero Colony Growth	Membrane filtration incubation assay

Enterprise E-E-A-T Authority & Reliability

Global Compliance Assurance & Localized Deployment

Shanghai Tongjie delivers engineering excellence backed by comprehensive quality certifications, stringent factory testing, and lifecycle operational monitoring for multinational microelectronics conglomerates.

ISO 9001 / 14001 / 45001

Integrated manufacturing and environmental safety protocols governing pressure vessel welding, piping cleanliness, and fabrication traceability.

CE & International Directives

Conformity under European Pressure Equipment Directive (PED), Machinery Directive (MD), and Low Voltage Directive (LVD) for turnkey export.

National Class II Contracting

Licensed general contractor qualifications in environmental protection engineering, cleanroom piping, and mechanical & electrical equipment erection.

Technology Roadmap: The Next Era of AI-Driven UPW Systems

The semiconductor roadmap through 2030 demands unprecedented levels of uptime and zero-defect water supply. Tongjie's engineering division is actively pioneering AI-coupled process optimization and autonomous electrochemical regeneration technologies:

Predictive Membrane Analytics

Machine-learning algorithms track normalized permeate flux, differential pressure drops, and salt passage rates across thousands of nodes in real time to anticipate scaling and bio-fouling 30 days ahead of schedule.

Non-Chemical Fouling Prevention

High-frequency electromagnetic and hydrodynamic cavitation pre-conditioning modifies mineral crystal morphology, eliminating the need for antiscalants that could introduce trace organic contaminants into the UPW loop.

Sub-10nm Real-Time Particle Profiling

Integration of acoustic surface-wave sensors and deep-UV spectroscopy directly within PVDF distribution headers, replacing delayed batch-sampling with nanosecond-level contamination alerts.

Procurement & Engineering FAQ

Frequently Addressed Technical Questions

In-depth responses for fab facility directors, process engineers, and EPC procurement leads specifying industrial ultrapure water systems.

How does Tongjie ensure sub-ppb TOC levels in high-temperature cleanroom environments?

Our multi-barrier TOC destruction train incorporates dual-wavelength (185/254nm) vacuum-ultraviolet photochemical reactors. The 185nm radiation photolyzes pure water molecules into highly reactive hydroxyl free radicals (•OH), which rapidly oxidize trace organics into carbon dioxide and ionic carbonate species. The ionic by-products are immediately sequestered by downstream polishing-grade mixed bed resins and non-regenerative EDI modules.

What piping materials and welding techniques are standard for Tongjie's distribution skids?

We employ cleanroom-grade, high-purity unpigmented PVDF-UHP (Polyvinylidene Fluoride) piping and fittings compliant with SEMI F57. Fabrication is carried out using computer-controlled Contactless IR (Infrared) Butt Fusion welding inside a Class 100/Class 1000 clean booth to eliminate internal bead crevices, entrapment zones, and metallic ion leaching. For high-pressure membrane segments, SS316L electro-polished tubing (Ra ≤ 0.25 μm) is used.

How are wafer reclaim streams managed to achieve Zero Liquid Discharge (ZLD)?

Semiconductor effluent is segregated at the tool drain into distinct streams: low-TDS rinse water, copper-bearing CMP slurry, and solvent/fluoride waste. The high-volume rinse water undergoes coagulation-flocculation, ceramic microfiltration, and primary RO to feed back into the makeup plant. Concentrated brine is routed through high-pressure Disc Tube Reverse Osmosis (DTRO) modules operating up to 160 bar, followed by mechanical vapor recompression (MVR) crystallization for salt precipitation and near 100% water recovery.

What is the standard Factory Acceptance Testing (FAT) procedure before export shipment?

Every skid undergoes comprehensive FAT inside our Shanghai manufacturing facility. Testing protocols include hydrostatic pressure testing at 1.5x design pressure, helium mass spectrometer leak detection for critical piping, full electrical and I/O simulation on Siemens or Allen-Bradley PLC panels, and continuous DI water circulation testing to evaluate hydrodynamic equilibrium, pressure drop profiles, and sensor calibration.

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