1: pretreatment - reverse osmosis - purification tank - ion exchanger - UV lamp - pure water pump - water point
2: Pretreatment - primary reverse osmosis - secondary reverse
osmosis (positive charge reverse osmosis membrane) - purification
tank - pure water pump - UV lamp - water point
3: Pretreatment - reverse osmosis - intermediate tank -
intermediate pump - EDI unit - purification tank - pure water pump
- UV lamp - water point
4: pretreatment→ultraviolet sterilizing device→first-level RO
device→secondary RO device→intermediate water tank→EDI
device→deoxidation device→nitrogen sealed pure water tank→except
TOC UV device→polishing mixed bed→ultrafiltration device→water
point
The water quality meets the American ASTM standard, the ultra-pure
water quality standard of the electronic department (18MΩ*cm,
15MΩ*cm, 2MΩ*cm and 0.5MΩ*cm four levels)
Ultrapure water system reverse osmosis (membrane separation) method
ultrapure water manufacturing technology
Reverse osmosis is the separation of the solvent (usually referred
to as water) in the solution through a reverse osmosis membrane (a
semi-permeable membrane) with sufficient pressure in the opposite
direction to the permeation direction. Separation can be carried
out using a reverse osmosis method that is greater than the osmotic
pressure. , purification and concentration of the solution. The
primary separation target for reverse osmosis membranes is the
range of ions in the solution.
