Typical process flow
Pre treatment - reverse osmosis - intermediate water tank - water pump - EDI device - purified water tank - pure water pump - ultraviolet

Line sterilizer - polishing mixed bed -0.2 or 0.5 μ m precision filter - water object (≥ 18M Ω) CM (Latest Process)
Pre treatment - first stage reverse osmosis - dosing machine (pH adjustment) - intermediate water tank - second stage reverse osmosis (positive charge reverse osmosis membrane) - pure water tank - pure water pump - EDI device - ultraviolet sterilizer -0.2 or 0.5 μ m precision filter - water object (≥ 17M Ω) CM (Latest Process)

● Standard reference
Pure water quality for cathode ray tubes and liquid crystal displays (empirical data)
Pure water quality for integrated circuits
National Electronic Grade Pure Water Standard

● Equipment characteristics
To meet the needs of users, achieve water quality that meets standards, minimize pollution at all levels, extend the service life of equipment, and reduce the maintenance workload of operators In terms of process design, water that meets national tap water standards is taken as the source water, and pre-treatment systems such as medium filters, activated carbon filters, sodium ion softeners, precision filters, RO reverse osmosis host systems, and ion exchange mixed bed (EDI electric desalination system) systems are installed.

Overview of Ultra Pure Water Used in the Chemical Industry
Ultra pure water in the chemical industry is mainly used for solvent water in battery industry, chemical analysis, chemical materials, product cleaning, material separation, concentration, purification, waste recycling and other occasions. The water quality requirements are relatively not too high, and the conductivity of pure water can basically meet the requirements from 0.1uS/cm-20uS/cm. Our company can adopt different combinations of ultra pure water production processes such as reverse osmosis, ion exchange, EDI, etc. according to the specific requirements of customers for water quality, to produce ultra pure water treatment equipment that is both economical and practical, and can meet customer requirements.

Process flow for preparing ultrapure water for the chemical industry
The process of preparing super water in the chemical industry can be roughly divided into the following categories:
1. The process of using ion exchange is as follows:
Raw water → raw water booster pump → multi-media filter → activated carbon filter → water softener → precision filter → cation resin filter bed → anion resin filter bed → anion resin mixed bed → microporous filter → water point
2. Adopting a two-stage reverse osmosis method, the process is as follows:
Raw water → Raw water booster pump → Multi medium filter → Activated carbon filter → Softener → Precision filter → First stage reverse osmosis → PH adjustment → Intermediate water tank → Second stage reverse osmosis (with positive charge on the surface of the reverse osmosis membrane) → Purified water tank → Pure water pump → Microporous filter → Water point
3. The process of using EDI is as follows:
Raw water → Raw water booster pump → Multi medium filter → Activated carbon filter → Softener → Precision filter → Primary reverse osmosis machine → Intermediate water tank → Intermediate water pump → EDI system → Microporous filter → Water point

Characteristics of chemical ultra pure water equipment
The traditional preparation process of ultrapure water usually uses ion exchange resin for production, but the use of ion exchange resin usually requires frequent resin regeneration, which consumes both material resources and labor. After years of practice and combined with the latest membrane separation technology, our company often uses a combination of reverse osmosis and ion exchange system (or EDI) to prepare ultrapure water. Compared with traditional processes, this process has the advantage of low operating costs (the regeneration cycle of ion exchangers is greatly extended) and reliable operation. Compared with the latest technology, it has the advantages of low cost and easy availability of consumables. The reverse osmosis process technology is reliable.

● Application areas
The solvents and cleaning processes used in the production and processing of chemical materials
Ultra pure materials and ultra pure chemical reagents
• Laboratory and pilot workshop
Chemical materials used in electronic semiconductors and integrated circuit boards
• Production, processing, and purification of quartz and silicon materials
High purity ink, inkjet in fax printers, nano ink