1、 Classification of Ultra Pure Water Machines:
Industrial pure water treatment equipmentMainly used for purifying industrial water to meet or exceed national or industry standards, ensuring the quality of industrial water. Operation mode: manual control or fully automatic control. Various industrial water uses can be divided into two categories based on their usage: direct water use and indirect water use. Directly using water requires excellent water quality; Indirect water use generally has no impact on product quality, but different water quality is required due to different requirements for corrosion and scale prevention.
1. Raw material water. Raw water refers to water used directly as raw material or as a part of raw material. In the beverage and food processing industries, water quality has a significant impact on product quality. Good water quality should be colorless, odorless, and free of turbidity, with appropriate salt content. Pure water is required for ammonia, nitrogen, nitrite, bacteria, and other substances.
2. Product processing water. Used for washing, dyeing, pulping, etc. in the production process, it also requires good water quality. The water quality requirements are roughly the same as those for raw material water. Deionized pure water is required for use in the electronics industry and other industries.
3. Boiler water. Due to the high hardness of water, scaling can occur inside the boiler, resulting in a decrease in the boiler's thermal efficiency; Dissolved oxygen and salts can cause corrosion of boilers and pipelines; Therefore, boilers have strict requirements for the hardness, salt content, alkalinity, and other indicators of water.
4. Cooling water. The function of cooling water is to cool the heat medium, so preventing its corrosion, scaling, and microbial hazards are the three major tasks of cooling water treatment. Therefore, the quality of cooling water should be strictly controlled for hardness, suspended solids, dissolved gases, oil and other organic matter, algae, and microorganisms.
2、 Several commonly used process flows for ultrapure water machines :
The process of preparing ultrapure water in the electronics industry can be roughly divided into the following categories:
1. Adoptingion exchange resinThe traditional water treatment method for preparing ultrapure water has the following basic process: raw water tank → raw water booster pump → sand filter → carbon filter → water softener → precision filter → intermediate buffer water tank → booster pump → cation bed → anion bed → mixed bed (double bed) → pure water tank → pure water pump → rear precision filter → water point.
2. AdoptingReverse osmosis water treatment equipmentThe basic process of combining with ion exchange equipment is as follows: raw water tank → raw water booster pump → sand filter → carbon filter → water softener → precision filter → intermediate buffer water tank → reverse osmosis equipment → booster pump → mixed bed (double bed) → pure water tank → pure water pump → rear precision filter → water point.
3. Adopting reverse osmosis water treatment equipment+EDI electric deionization equipmentThe method of matching is a new process for producing ultrapure water, which is also an environmentally friendly, economical, and has great potential for development. Its basic process flow is: raw water tank → raw water booster pump → sand filter → carbon filter → water softener → precision filter → intermediate buffer water tank → reverse osmosis equipment → RO water tank → booster pump → EDI equipment → pure water tank → pure water pump → rear precision filter → water point.
3、 Characteristics of industrial ultrapure water equipment:
The electronic industry's ultrapure water equipment usually consists of a pretreatment system consisting of multi-media filters, activated carbon filters, sodium ion softeners, precision filters, etc., an RO reverse osmosis host system, an ion exchange mixed bed (or EDI electric desalination system) system, and other main equipment systems. The raw water tank, intermediate water tank, RO pure water tank, and ultra pure water tank are all equipped with liquid level control systems, high and low pressure water pumps are equipped with high and low pressure protection devices, online water quality detection and control instruments, and PLC programmable controllers for electrical use, truly achieving unmanned operation. At the same time, the recommended and customer required methods are adopted for process material selection, making this equipment more cost-effective and reliable compared to other similar products.
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