Trace impurities destroy wafer yields. We deliver heavy-duty Double-Pass RO and EDI architectures designed to guarantee continuous 18.2 MΩ·cm ultrapure water (UPW) and recycle complex fab wastewater.
We architect the complete, closed-loop water cycle to protect your wafer yields and environmental compliance.
Generating massive volumes of absolute 18.2 MΩ·cm water required for precise wafer washing and photolithography.
Neutralizing highly toxic CMP slurry, hydrofluoric acid, and heavy metals to meet strict fab discharge thresholds.
Pushing spent rinse water through specialized membranes to recover up to 85% back to the UPW makeup system.
Standard water filters are useless in a cleanroom. Microelectronics require absolute purity and zero-downtime architectures. Here is the deep-dive into how WANDONG ENVIRO architects around the three deadliest fab constraints.
Even parts-per-trillion (ppt) of boron, silica, or organic carbon can short-circuit a microchip, destroying millions of dollars in wafer yields. Standard single-pass RO systems simply cannot achieve the ionic rejection required for modern sub-nanometer nodes.
The Engineered Cure: We implement Double-Pass RO + EDI Architectures. By utilizing genuine DuPont/Dow resins and continuous electrodeionization (EDI), we strip out 99.99% of dissolved ions. We guarantee absolute 18.2 MΩ·cm resistivity with zero particle shedding, protecting your production line at the molecular level.
A modern semiconductor fab consumes millions of gallons of ultrapure water daily. Relying solely on municipal intake not only incurs massive operational costs but also exposes the entire facility to catastrophic production halts during regional droughts or water restrictions.
The Engineered Cure: We engineer Rinse Water Recovery Loops. By intercepting low-TDS spent rinse water from the cleanroom, we process it through dedicated UF/RO skids, returning up to 85% back to the UPW makeup system. This slashes municipal reliance and builds resilience against water scarcity.
Fab floor space is the most expensive real estate on earth. Traditional, sprawling water treatment plants waste valuable square footage that should be dedicated to revenue-generating production tools and lithography machines.
The Engineered Cure: We deliver High-Density Skid-Mounted UPW Systems. Our multi-tier stainless steel skids stack RO and EDI modules vertically, shrinking the mechanical footprint by up to 40%. The entire architecture is pre-piped and pre-wired, allowing for rapid drop-in installation through standard facility doors with zero civil work.
Compare the cost of single-pass municipal consumption vs. investing in a WANDONG UPW Recovery architecture.
We utilize a heavy-duty, multi-barrier process block flow that guarantees stable generation of 18.2 MΩ·cm ultrapure water for sub-nanometer wafer fabrication.
Continuous electrical regeneration. Produces 18.2 MΩ·cm ultrapure water.
Prevents CO2 ingress and airborne contamination before final polish.
City water or fab reuse feed must meet the following parameters before entering the UPW generation skid to prevent irreversible membrane and resin damage.
| PARAMETER | MAX LIMIT (RO FEED) |
|---|---|
| TDS (Total Dissolved Solids) | < 500 mg/L |
| SDI₁₅ | < 3.0 |
| TOC (Total Organic Carbon) | < 2.0 ppm |
| Free Chlorine | Strictly Not Detected |
When inlet conditions are met, WANDONG ENVIRO contractually guarantees the following absolute purity standards for semiconductor fabrication.
| OUTPUT METRIC | GUARANTEED VALUE |
|---|---|
| Resistivity (@ 25°C) | 18.2 MΩ·cm |
| TOC (Total Organic Carbon) | < 1.0 ppb |
| Dissolved Silica | < 0.5 ppb |
| Particles (> 0.05μm) | < 1 count/mL |
Semiconductor fabs run 24/7/365. Unplanned UPW downtime means catastrophic yield loss. Our Siemens PLCs are programmed with redundant fail-safes and dynamic monitoring to ensure continuous 18.2 MΩ·cm delivery.
Even a momentary dip in resistivity can ruin a batch of wafers. We design our control systems not just to operate, but to autonomously anticipate and mitigate risks before they reach the cleanroom.
We hardcode N+1 Redundancy Logic into the system. If a primary high-pressure pump or EDI module experiences a fault, the PLC instantly switches to the hot-standby unit in milliseconds, ensuring zero interruption to your UPW flow.
Inline precision sensors constantly monitor resistivity and TOC. If resistivity drops below 18.0 MΩ·cm, the system triggers an immediate alarm and automatically diverts the off-spec water to the drain or recovery loop, physically preventing it from ever reaching the wafer washing stations.
High-density vertical skids designed to drop directly into existing cleanroom sub-fabs, maximizing your production floor space.
| System Model | Capacity (m³/day) | Application | Format |
|---|---|---|---|
| WD-UPW-100 | 100 m³/day | Lab / Micro-Fab UPW | Sanitary Skid |
| WD-UPW-500 | 500 m³/day | Mid-tier Semiconductor UPW | Multi-tier Skid |
| WD-REUSE-1000 | 1,000 m³/day | Wafer Rinse Recovery | Open-Frame Skid |
| WD-CMP-250 | 250 m³/day | CMP Slurry Treatment | Custom Modular |
In the semiconductor industry, compliance isn't just about the environment—it's about protecting the product. Our architectures ensure you stay ahead of both yield requirements and environmental regulations.
Our UPW architectures strictly comply with SEMI F63 guidelines for ultrapure water used in semiconductor manufacturing.
Manufactured under strict quality control to ensure zero particle shedding and full environmental compliance.
If the feed water matches the provided report, we contractually guarantee the 18.2 MΩ·cm resistivity and TOC limits. No excuses.
You focus on pushing Moore's Law and maximizing yields; let us handle the absolute water purity. Submit your feed parameters, and our engineering team will architect a custom UPW solution guaranteed to perform.
Receive a custom P&ID and Factory-Direct project budget within 48 hours.
