Ultrapure water preparation system and ultrapure water preparation method

Abstract

The invention provides an ultrapure water preparation system and an ultrapure water preparation method. The ultrapure water preparation system includes an ultrapure water treatment pipeline for producing third-grade water and first-grade water, and is used for producing third-grade water and first-grade water , the ultrapure water preparation system also includes: a first detection component located at the output position of the third-grade water, which is used to detect the conductivity or resistivity of the third-grade water to determine whether the third-grade water is qualified; the first branch, its inlet It is connected to the pipeline downstream of the first detection component, and the outlet is located at the waste water discharge, so that the unqualified third-grade water reaches the waste water discharge; the second branch, its inlet is at the output position of the first-grade water, and the outlet is at the third Between the output position of grade water and the first detection component, when the grade 3 water has been unqualified within the preset time, stop the production of grade 3 water and use the remaining part of grade 3 water to produce grade 1 water, and use the grade 1 water The cleaning of the first detection part solves the problem in the prior art that the conductivity of the initial water produced after the ultrapure water is shut down and restarted is unqualified.

Description

technical field [0001] The invention relates to the field of ultrapure water machines, in particular to an ultrapure water preparation system and an ultrapure water preparation method. Background technique [0002] In the prior art, the ultrapure water machine in the laboratory uses municipal tap water as the raw water, and passes through ultrafiltration filter element, carbon fiber filter element, primary reverse osmosis membrane, secondary reverse osmosis membrane, EDI module, ultraviolet sterilization and polishing resin filter element7 Ultra-pure water is obtained after high-grade treatment, which effectively filters out impurities such as suspended solids, rust, residual chlorine, organic matter, bacteria, and ions in the raw water. [0003] The ultrapure water machine is suitable for laboratories and other places that need to use ultrapure water to provide tertiary water and primary water in real time. Among them, the reverse osmosis membrane must be operated under a ...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide an ultrapure water preparation system and an ultrapure water preparation method to solve the problem of unqualified conductivity of the initial water produced after the ultrapure water is shut down and restarted in the prior art

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