成人精品在线-欧美日韩一区二区在线-亚洲一级片在线观看-亚洲一区二区高清-激情开心成人网-欧美成人猛片aaaaaaa-综合色影院-91精品91-清纯唯美亚洲激情-日韩极品在线观看-中文字幕视频免费在线观看-9a蜜桃久久久久久免费-欧美性色欧美a在线播放-国产精品久久久久久妇女-久久精品国产成人

Solution
Ultra pure water systems in other industries

Ultra pure water systems in other industries

Ultra pure water is widely used in solar photovoltaics, optical photovoltaics, new energy and new materials LED、PCB、 Industries such as sapphire.

Technical specifications for national electronic grade ultrapure water

Project

Specification

EW-I

EW-Ⅱ

EW-Ⅲ

EW-IV

Resistivity(25℃)/MQ ·cm

≥18

(5% of the time not less than 17)

≥15

(5% of the time not less than 13)

≥12.0

≥0.5

All silicon/(μg/L)

≤2

≤10

≤50

≤1000

Particle count/(pcs/L)

0.05μm~0.1μm

500

-

-

-

0.1μm~0.2μm

300

-

-

-

0.2μm~0.3μm

50

-

-

-

0.3μm~0.5μm

20

-

-

-

>0.5μm

4

-

-

-

Number of bacteria/(pcs/mL)

≤0.01

≤0.1

≤10

≤100

Copper/(μ g/L)

≤0.2

≤1

≤2

≤500

Zinc/(μg/L)

≤0.2

≤1

≤5

≤500

Nickel/(μg/L)

≤0.1

≤1

≤2

≤500

Sodium/(μ g/L)

≤0.5

≤2

≤5

≤1000

Potassium/(μ g/L)

≤0.5

≤2

≤5

≤500

Iron/(μ g/L)

≤0.1

-

-

-

Lead/(μ g/L)

≤0.1

-

-

-

Fluorine/(μ g/L)

≤1

-

 

 

Chlorine/(μ g/L)

≤1

≤1

≤10

≤1000

Nitrite/(μ g/L)

≤1

-

-

-

Bromine/(μ g/L)

≤1

-

-

-

Nitrate radical/(μ g/L)

≤1

≤1

≤5

≤500

Phosphate radical/(μ g/L)

≤1

≤1

≤5

≤500

Sulfate radical/(μ g/L)

≤1

≤1

≤5

≤500

Total organic carbon/(μ g/L)

≤20

≤100

≤200

 

 

Typical ultra pure water process flow

Process features: Most of the salt in the water is removed by reverse osmosis, and the MB system is used to produce high-purity water in the later stage, which can effectively prolong the regeneration cycle of the MB system and reduce the use of acid and alkali.

 

Improve the pure water process flow

Process characteristics: The emergence of reverse osmosis and EDI has changed the low desalination efficiency of traditional anion/cation beds, completely abandoning the use of acid and alkali, and achieving green production throughout the entire process.

Full membrane pure water process flow

Process characteristics: The full membrane water treatment process further optimizes and improves the pretreatment system, enhances the pretreatment effect, broadens the inlet conditions, and can effectively achieve the recycling and reuse of reclaimed water.