Battery production industry pure water system

DAWT·2022-05-09

System Introduction

The configuration of the lithium battery electrolyte in the battery is very strict for the pure water. Generally, the conductivity of the water is about 0.1us/cm (the resistance is about 10 megohms). The traditional method is used to prepare the ultrapure water system for batteries. The processing technology is often the use of cationic epoxy resin exchange equipment. The defect of this processing technology depends on the frequent reconstruction of the cationic epoxy resin after a period of application. With the continuous improvement of membrane separation equipment in industrial production, RO reverse osmosis membrane wastewater treatment process is selected, or one-stage RO reverse osmosis is used followed by ion exchange mixed bed (or electrodeionization EDI) processing technology to obtain Ultrapure water system. The ultrapure water equipment used in the rechargeable battery manufacturing industry includes: ultrapure water equipment for lithium battery production, ultrapure water equipment for battery baffles, ultrapure water equipment for battery production and manufacturing, pure water for dry test rechargeable battery production and manufacturing, and solar cells Ultrapure water equipment for board production and manufacturing, etc.

Process flow

1. Source water→source water booster pump→multi-media filter→activated carbon filter→precise filter→cation exchanger→anion exchanger→mixed ion exchanger→microporous filter&rarr ;Water point

2. Source water → source water pressure pump → multi-media filter → activated carbon filter → softened water equipment → precision filter → first-stage ro reverse osmosis → PH adjustment → middle water storage tank →Second-stage RO reverse osmosis (RO reverse osmosis membrane surface is positively charged)→Purification storage tank→Pure centrifugal pump→Microporous filter→Tap water point

3. Source water→source water pressure pump→multi-media filter→active carbon filter→softening water equipment→precision filter→first-stage ro reverse osmosis machine→middle water storage tank→middle Centrifugal water pump→EDI system software→microporous filter→water point