Photovoltaic Module Water Purification System 18.2 MΩ·cm Two Stage RO EDI

This photovoltaic dedicated ultrapure water equipment is professionally developed for solar cell manufacturing, silicon wafer processing, photovoltaic module production and new energy photovoltaic factories. It adopts advanced two-stage RO + EDI + post mixed bed polishing purification process, equipped with dual-band UV sterilization and online TOC monitoring system.

The equipment deeply removes trace silicon, boron, metal ions, colloidal particles, residual organic carbon and microorganisms in raw water. It stably produces 18.25MΩ*cm electronic-grade ultrapure water that fully meets ASTM and photovoltaic industry super strict water standards.

In solar cell production, wafer texturing, etching, cleaning and diffusion processes are extremely sensitive to water impurities. Ultra-low silicon and boron control effectively avoids wafer surface stains, black spots, low photoelectric conversion efficiency and defective cells, greatly improving photovoltaic finished product yield and production stability.

The whole machine adopts modular skid-mounted structure, featuring compact layout, plug-and-play installation and 24-hour continuous industrial operation, ideal for large-scale photovoltaic mass production lines.

1. Industrial Multi-stage Pretreatment System: Multimedia filter, activated carbon filter and automatic softening device remove sediment, rust, residual chlorine and suspended solids, reduce raw water hardness and prevent scaling, protecting core RO and EDI components.
2. Two-stage RO Reverse Osmosis Primary Purification: High pollution-resistant industrial RO membranes remove over 99.5% of soluble salts, colloids and macromolecular organic matter, providing stable intermediate water for deep deionization.
3. Inter-stage pH Adjustment System: Precise chemical dosing reduces carbon dioxide and silicon content in water, improving EDI working efficiency and avoiding silicon scaling failure.
4. EDI Continuous Deep Deionization: No acid-base regeneration required. The EDI module deeply removes trace boron, silicon and ultra-fine ionic impurities which are critical hazards for photovoltaic wafer production.
5. UV TOC Degradation & Sterilization: 185nm UV light decomposes organic carbon, 254nm UV eliminates bacteria and algae, effectively controlling TOC at ultra-low ppb level.
6. Mixed Bed Polishing & Terminal Precision Filtration: Post-positioned high-purity mixed bed further upgrades water resistivity to reach full electronic grade. 0.22μm terminal filter intercepts fine particles and resin fragments to ensure ultra-clean water for wafer etching and texturing processes.

• Professional Photovoltaic Grade Water Quality Control: Strict control of silicon ≤2ppb, boron ≤1ppb and ultra-low TOC, completely matching PERC, TOPCon and HJT solar cell high-standard production requirements.
• Zero Chemical Pollution Continuous Operation: EDI physical desalination technology replaces traditional chemical regeneration, no waste liquid pollution, meets photovoltaic factory environmental protection standards.
• Stable 18.25MΩ*cm Ultra-high Purity Water Output: Effectively eliminate water-caused wafer defects, improve solar cell photoelectric conversion rate and finished product qualification rate.
• Skid-mounted Plug and Play Structure: Integrated modular design, factory pre-assembled and pre-tested, saving installation time and workshop space, suitable for new factory construction and old production line upgrading.
• Intelligent Full Automatic Control: PLC + touch screen intelligent system realizes automatic water production, automatic membrane flushing, pressure protection, water shortage/full water alarm and real-time water quality data monitoring, supporting 24h unattended operation.
• High Water Recovery & Low Operation Cost: Optimized concentrated water recycling design increases water recovery rate up to 85%, saving a large amount of water and electricity consumption for long-term industrial production.

We provide professional photovoltaic industry turnkey ultrapure water solutions, including raw water quality analysis, personalized process design, factory manufacturing, on-site commissioning and global after-sales technical support.

All equipment supports customized flow and configuration according to different photovoltaic production processes. Long-term spare parts supply and remote operation training ensure long-term stable and high-purity water supply for solar cell production lines.