The electronics industry has the high requirements for ion content in the water, this system adopts advanced RO water treatment equipment technology, combines with senior EDI, mixed bed technology, the product water quality is up to 18.25megohm, water quality conforms to American ASTM standards. Now the electronic water qualities have been divided into five standards by the national electronics industry department, they are 18MΩ•cm, 15MΩ•cm, 10MΩ•cm, 2MΩ•cm, 0.5MΩ•cm, to distinguish different water quality.
I. Technical parameter:
Product water quality: water quality conforms to the American ASTM standards, the pure water quality standards of the electronics industry department, there are five grades: 18MΩ•cm, 15MΩ•cm, 10MΩ•cm, 2MΩ•cm, 0.5MΩ•cm.
Productivity: 0.5-100T/H
Materials: fiber glass, stainless steel, organic glass etc.
II. Technology process:
1. Pretreatment→RO→water tank→cation bed→anion bed→mixed bed→pure water tank→pure water pump→UV sterilizer→fine mixed bed→precision filter→water-user
2. Pretreatment→ first-stage RO→ drug feeder→ (PH regulation)→ middle water tank→ second-stage RO→ pure water tank→ pure water pump→ UV sterilizer→ 0.2 or 0.5μm precision filter→ water-user
3. Pretreatment→ RO→ middle water tank→ water pump→ EDI→ pure water tank→ pure water pump→ UV sterilizer→ 0.2 or 0.5μm precision filter→ water-user
4. Pretreatment→ RO→ middle water tank→ water pump→ EDIv pure water tank→ pure water pump→ UV sterilizer→ fine mixed bed→ 0.2 or 0.5μm precision filter→ water-user
III. Main features:
*all the actions of system should be done under the preset procedures automatically, which has the full-automatic functions.
*the system structure is compact, which can save space effectively.
*the energy-consumption of system is low, the product water cost is cheap.
*the system operation is secure and reliable, the water supply pipe circuit is closed, the product water quality is table.
IV. Applications:
Ultrapure water for electronics industries: manufacturing semiconductor, photovoltaic solar, integrated circuit chips and capsulation, LCD, high-precision circuit board, photoelectric devices, other electronic devices etc.