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Method for predicting particulate breakthrough time for non-regenerative ion exchange resin device and method for managing non-regenerative ion exchange resin device

An ion exchange resin, breakthrough time technology, applied in ion exchange water/sewage treatment, measurement device, non-polluting water treatment, etc., can solve the problem of difficult ion exchange capacity, and achieve the effect of preventing leakage

Pending Publication Date: 2022-01-04
KURITA WATER INDUSTRIES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the past, the exchange of the non-regenerative ion exchange resin device was carried out earlier, and it was difficult to make full use of the ion exchange capacity of the non-regenerative ion exchange resin device

Method used

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  • Method for predicting particulate breakthrough time for non-regenerative ion exchange resin device and method for managing non-regenerative ion exchange resin device
  • Method for predicting particulate breakthrough time for non-regenerative ion exchange resin device and method for managing non-regenerative ion exchange resin device
  • Method for predicting particulate breakthrough time for non-regenerative ion exchange resin device and method for managing non-regenerative ion exchange resin device

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0038]

[0039] figure 1 An ultrapure water production device to which the method for predicting the particle breakthrough time of the non-regenerative ion exchange resin device in this embodiment can be applied is shown. exist figure 1 Among them, the ultrapure water manufacturing device 1 is an ultrapure water manufacturing device 1 composed of a pretreatment system 2, a primary pure water device 3 and a secondary pure water device (subsystem) 4 for processing primary pure water. Water, tap water, well water, etc.) W is used for manufacture.

[0040]Suspended substances or colloidal substances in the raw water W are removed in the pretreatment system 2 composed of coagulation, pressurized flotation (sedimentation), filtration (membrane filtration) devices, and the like. In addition, high-molecular organic substances, hydrophobic organic substances, and the like can be removed in this process.

[0041] The primary pure water manufacturing device 3 is equipped with a firs...

no. 2 approach

[0066] Next, a method of predicting the particle breakthrough time of the non-regenerative ion exchange resin device according to the second embodiment of the present invention will be described.

[0067] In the aforementioned first embodiment, the small resin column is installed in parallel with the non-regenerative ion exchange resin 25, but this embodiment is a method of installing the small resin column independently of the non-regenerative ion exchange resin 25 and performing an accelerated test. .

[0068] In this embodiment, the same device as that in the first embodiment described above can be applied as the ultrapure water production device. In addition, the same device can also be applied to the non-regenerative ion exchange resin device 25 which is the object of predicting the breakthrough time of fine particles. In addition, the same column can also be used as a small resin column.

[0069]

[0070] A method of predicting the breakthrough time of fine particles i...

Embodiment 1

[0084] exist figure 1 In the ultrapure water production apparatus shown, in order to predict the breakthrough time of the non-regenerative ion exchange resin 25, an accelerated test was performed with one small resin column.

[0085]

[0086] Tower diameter: 800mm.

[0087] Resin layer height: 1000mm.

[0088] Water SV: 39 / h.

[0089] Water LV: 39m / h.

[0090] The number of particles in the treated water (feed water): about 100 / mL (>0.05μm).

[0091]

[0092] Tower diameter: 40mm.

[0093] Resin layer height: 500mm.

[0094] Water SV: 78 / h.

[0095] Water LV: 39m / h.

[0096] The number of particles in the simulated treated water: about 3000 / mL (>0.05μm).

[0097] The simulated water to be treated was passed through the small resin column, and the results of continuous measurement of the number of treated water particles in the small resin column are shown in Figure 4 . In addition, when the number of particles in the treated water is more than 1% (≥ about 30 par...

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Abstract

Provided is a method for predicting particulate breakthrough time for a non-regenerative ion exchange resin device, wherein a portion of water W1 to be treated by a non-regenerative ion exchange resin device 25 passes through each of the following that are disposed in parallel with the non-regenerative ion exchange resin device 25: a first path 31 that comprises a first particle counter 34; a second path 32 that comprises a first compact resin column 35, a second particle counter 36, a flow rate regulating valve 37, and a first flow meter 38; and a second path 33 that comprises a second compact resin column 39, a third particle counter 40, a flow rate regulating valve 41, and a second flow meter 42.

Description

technical field [0001] The present invention relates to a method of predicting particle breakthrough time of a non-regenerative ion exchange resin device and a method of managing a non-regenerative ion exchange resin device based on the predicted particle breakthrough time. Background technique [0002] In the liquid crystal / semiconductor and other electronic industries that require high-purity pure water or ultrapure water, non-regenerative type is often installed at the end of the primary pure water production device or in the secondary pure water production device to remove extremely small amounts of ions. Ion exchange resin unit. As a non-regenerative ion exchange resin device, a mixed bed type ion exchange resin device is often used, and a single bed type or a double bed type ion exchange resin device is also used. [0003] Since the non-regenerative ion exchange resin device is installed at the front stage of the point of use, there is a risk that the operation of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/42G01N33/44G01N30/02
CPCG01N30/00G01N30/88G01N30/64C02F1/42G01N30/02G01N33/44C02F2209/001C02F2103/04C02F1/32C02F1/441C02F1/442C02F2209/40C02F2209/10G01N15/0826C02F1/008C02F2209/44
Inventor 栩内优仁宫崎洋一
Owner KURITA WATER INDUSTRIES LTD