Intelligent control and cleaning method of two-stage reverse osmosis purified water system

By comparing the instrument data of the secondary reverse osmosis purified water system with historical data benchmarks, the system identifies and obtains accurate predicted data, thus solving the accuracy problem when the instruments malfunction and realizing intelligent data judgment and product water quality control.

CN121470618AActive Publication Date: 2026-02-06GUANGZHOU WANGUAN WATER TREATMENT EQUIP
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Patent Information

Application Number
CN202511917434.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-18
Publication Date
2026-02-06
Estimated Expiration
2045-12-18

AI Technical Summary

Technical Problem

In existing two-stage reverse osmosis purified water systems, when instruments such as conductivity meters and pH meters malfunction or sensors are abnormal, the quality of the produced water cannot be accurately determined, leading to substandard water entering subsequent use stages. Furthermore, the abnormal sensor data relies on experience for judgment, which lacks accuracy.

Method used

By comparing the data from each instrument with the set data benchmark and fluctuation range, abnormal data is identified, and historical data is used to obtain the correct predicted data, thus realizing intelligent dynamic decision-making. When data is abnormal, the correct predicted data is obtained and its accuracy is verified based on the correlation characteristics between normal instrument data and historical data.

Benefits of technology

It enables intelligent and accurate data judgment when instruments malfunction, improving judgment efficiency, ensuring water quality, and reducing reliance on manual experience judgment.

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Abstract

The invention relates to the technical field of purified water systems, and discloses an intelligent control and cleaning method of a two-stage reverse osmosis purified water system, which comprises the following steps: step 1, acquiring water temperature, pH value, conductivity and instrument data of a water inlet and a water outlet in the purified water preparation process; 2, comparing the obtained data of each instrument with a set data reference and fluctuation range, and judging whether the data of each instrument is abnormal or not; and step 3, when the instrument data is abnormal, obtaining estimated correct data of the abnormal instrument according to the normal and abnormal instrument data and the historical data. According to the method, whether part of instrument data is abnormal or not is judged through various data in the pure water preparation process, when the instrument data is abnormal, estimated correct data is obtained according to association characteristics of an abnormal instrument and other normal data and the obtained various data, and then the obtained estimated correct data is verified.
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