Method for operating water treatment apparatus

Abstract

In this method for operating a water treatment apparatus provided with a plurality of water treatment devices of the same type which have the same treatment capacity and which are installed in parallel, the same water to be treated is passed through each of the water treatment devices, and treated water is collected. The method for operating the water treatment apparatus is characterized in that the water passage through one water treatment device A is set so as to have a higher load than that through other water treatment devices B, and, when the water quality of treated water from water treatment device A deteriorates, the service life of the water treatment devices B is predicted from the estimated load on water treatment device A up until that time, and the water passage time and the water passage amount through each of the water treatment devices thereafter are controlled on the basis of the prediction result.

Description

technical field [0001] The present invention relates to an operation method of a water treatment device in which a plurality of ion exchange resin towers, activated carbon towers and other water processors are arranged side by side. Background technique [0002] Almost all pure water for general industrial use such as boiler water, highly pure water used in power plants, and ultrapure water used as cleaning water and rinsing water for wafers and substrates in semiconductor factories and liquid crystal factories Manufactured in combination with a water treatment system that removes impurities contained in water. As water processors, ion exchange resin towers, activated carbon towers, RO membrane devices, UF membrane devices, ion exchange filters, etc. are widely used. [0003] As a method of using such a water processor, in addition to the method of repeating the impurity removal step and the regeneration step, there is also a short-term use method of replacing it with a new...

AI Technical Summary

Problems solved by technology

[0010] In life prediction using a small ion-exchange resin filled container, generally speaking, the SV, LV, etc. are set as close as possible to the actual machine, and water flow is set under a slightly severe condition, but it is difficult to accurately reflect the load on the actual machine , and here also it is necessary to perform processing that considers a certain amount of margin

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