Pure Water Purification Technology Multi Stage Filtration PLC
Control System Solution
DI Ultrapure Water Device for Electronic Optical Disc Production
Ultrapure water equipment utilizes a comprehensive pretreatment + reverse osmosis + EDI system to effectively remove salts, impurities, bacteria, and other
contaminants from water, ensuring the produced water quality meets
enterprise production requirements.
System Overview
The system features an integrated design with modular installation,
offering low energy consumption and minimal space requirements. By
combining RO reverse osmosis and EDI technology with steady flow
pressure control, and supported by advanced pretreatment, the
system delivers stable water quality, easy operation, low operating
costs, environmental friendliness, and simplified maintenance.
Produced water achieves resistivity ≥ 18.2MΩ.CM at 25°C.
EDI Technology Applications
EDI high purity water equipment serves as secondary desalination
following reverse osmosis, producing water up to 10-18.2MΩ.CM. Widely used in microelectronics, semiconductor manufacturing,
power generation, pharmaceutical industries, and laboratories. Also
suitable for pharmaceutical distilled water, food and beverage
production, power plant boiler makeup water, and various high purity water applications.
EDI utilizes anion and cation membranes in symmetrical stacked
configuration with ion exchange resins. Under direct current
voltage, continuous ion exchange and water electrolysis generate H+
and OH- ions for constant resin regeneration, producing
increasingly pure water.
EDI equipment combines reverse osmosis and ion exchange
technologies with intelligent PLC control systems, automatically
monitoring and displaying water quality while ensuring consistent
water production.
EDI Advantages Over Traditional Ion Exchange
- Requires only 5% of the resin used in traditional methods
- No chemical regeneration needed, reducing acid, alkali, and
cleaning water consumption
- Clean production technology with no waste acid/alkaline discharge
- Easy automation integration with stable water quality
- Produces electronic grade water (resistivity 15-18MΩ-cm, endotoxin
<0.1mg/L)
- Excellent removal of weakly dissociated substances (CO₂, silicon,
boron, ammonia)
- Continuous production process without regeneration downtime
Key Product Features
- Fully automatic control system with imported components for high
stability
- Advanced automation with automatic shutdown and protection
functions
- Composite membrane modules for superior separation and transmission
rates
- Low energy consumption with high water utilization and operating
efficiency
- Compact, space-saving design
- Automatic membrane flushing system extends membrane lifespan
- Minimal maintenance requirements with long-term operational
reliability
- Integrated CIP membrane cleaning system
- Premium Schneider electrical components for quality assurance
- Optional remote monitoring for real-time system observation
Product Water Quality Specifications
| Parameter | Unit | 18MΩ Pure Water | Notes |
|---|
| Resistivity 25°C | MΩ-cm | ≥17.5 | |
| Microparticles (≥0.1μm) | pcs/ml | 5 | |
| Microparticles (≥0.2μm) | pcs/ml | 5 | |
| Bacterial Count | pcs/ml | 0.1 | |
| TOC | μg/L | 20 | |
| Na+ | μg/L | 0.5 | |
| K+ | μg/L | 0.5 | |
| Zn++ | μg/L | 0.2 | |
| Cu | μg/L | 0.2 | |
| SiO₂ | μg/L | 1 | |
| Cl | μg/L | 1 | |
| Backwater Pressure | bar | 2.5±0.5 | |
| Water Temperature | °C | 23±1 | |
Important Purchase Information
Due to the specialized nature of our products, please contact our
customer service team before purchasing. Our representatives will
recommend suitable equipment based on your specific water
consumption and quality requirements. To avoid potential issues,
please do not purchase equipment without consultation. For detailed
specifications, parameters, or additional images, please contact
customer service for comprehensive assistance. Thank you for your
support of Net Environmental Protection!
DI Ultrapure Water Device Electronic Optical Disc Production Water
