Water purification system and water purification method

JP2025134376AActive Publication Date: 2025-09-17海贺 信好
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Patent Information

Application Number
JP2024032249
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-03-04
Publication Date
2025-09-17
Estimated Expiration
2044-03-04

AI Technical Summary

Technical Problem

Existing water purification methods using ozone and OH radicals are ineffective in decomposing humic substances like fulvic acid, leading to partial oxidation and the generation of harmful by-products.

Method used

A water purification system that includes a hydrogen peroxide addition unit, a light irradiation unit using a wavelength of 320 nm, and an ozone treatment unit, where hydrogen peroxide and light are first used to decompose humic substances, followed by ozone treatment, followed by ozone treatment, to enhance the efficiency of the process.

Benefits of technology

The system effectively decomposes humic substances by utilizing the synergistic effect of hydrogen peroxide and 320 nm light, reducing by-product formation and improving treatment efficiency, allowing for subsequent ozone treatment to address remaining impurities.

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Abstract

To provide an effective water purification system.SOLUTION: A water purification system 1 includes a hydrogen peroxide addition part 31 for adding hydrogen peroxide to the water to be treated, a light irradiation part 32 for irradiating light with a wavelength of 320 nm, and an ozone treatment part 33 for ozone treatment. It decomposes humic substances in the water to be treated by light irradiation in the light irradiation part 32 and decomposes residual substances by ozone treatment in the ozone treatment part 33.SELECTED DRAWING: Figure 2
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Citation Information

Patent Citations

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