Ultra-pure Water Equipment for Battery Production with 5T/H Volume and ≤5-20us/cm Resistivity at 25℃ Design Temperature

Ultra-pure water equipment for battery production includes ultra-pure water for storage battery production, lithium battery production, solar photovoltaic cell production, and battery grids. The preparation of electrolyte in batteries has very strict requirements for ultrapure water, typically requiring water conductivity above 0.1μs/cm (resistance value above 10 megohms).

Traditional processes for preparing ultrapure water for batteries often use anion and cation resin exchange equipment, which requires frequent resin regeneration. With the maturation of membrane separation technology, modern systems now typically employ reverse osmosis filtration, either as a single-stage reverse osmosis process followed by ion exchange mixed bed (or electro-deionization EDI) process.

1. Ion Exchange Method: Raw water → raw water booster pump → multi-media filter → activated carbon filter → water softener → precision filter → cation resin filter bed → cation and cation resin mixed bed → microporous filter → water usage point
2. Two-stage Reverse Osmosis Method: Raw water → raw water booster pump → multi-media filter → activated carbon filter → water softener → precision filter → first-stage reverse osmosis → PH adjustment → intermediate water tank → second-stage reverse osmosis → purified water tank → purified water pump → microporous filter → water usage point
3. EDI Method: Raw water → raw water booster pump → multi-media filter → activated carbon filter → water softener → precision filter → first-stage reverse osmosis machine → intermediate water tank → intermediate water pump → EDI system → micro-pore filter → water usage point