Wastewater treatment method

The wastewater treatment method addresses the challenge of biodegrading dye compounds from microbial fermentation by using indigoidin and its derivatives, achieving reduced environmental impact and costs through biodegradation.

WO2026140616A1PCT designated stage Publication Date: 2026-07-02DIC CORP

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
DIC CORP
Filing Date
2025-11-20
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

There is a lack of effective wastewater treatment methods for dye compounds produced through microbial fermentation that are biodegradable, leading to high environmental impact and costs due to the difficulty in decomposing these compounds.

Method used

A wastewater treatment method involving the discharge and biodegradation of pigment compounds and their derivatives obtained through microbial fermentation, utilizing specific indigoidin compounds and derivatives, which are biodegradable, along with optional steps like membrane filtration, oxidation, coagulation, and anaerobic treatment.

Benefits of technology

The method reduces environmental impact and costs by enabling the biodegradation of pigment compounds, minimizing the need for incineration processes and reducing the overall environmental burden.

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Abstract

The present invention relates to a wastewater treatment method comprising: a step (1) for discharging wastewater containing at least one selected from the group consisting of dye compounds obtained by microbial fermentation and derivatives thereof; and a step (2) for biodegrading at least one selected from the group consisting of the dye compounds and derivatives thereof in the wastewater.
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