Aqueous effluent treatment system

The aqueous effluent treatment system uses a supercritical reactor system with a moving bed reactor and sulfur trap material to efficiently separate and process inorganic and organic compounds, addressing the challenges of conventional systems by reducing pollutant output and enhancing energy efficiency.

WO2025114142A1PCT designated stage expired Publication Date: 2025-06-05TREATECH SA
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Patent Information

Application Number
PCT/EP2024/083181
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-11-28
Filing Date
2024-11-21
Publication Date
2025-06-05

AI Technical Summary

Technical Problem

Conventional aqueous effluent treatment systems face challenges in efficiently separating inorganic and organic compounds, leading to undesirable compounds in the output that require further processing, increasing costs and reducing energy efficiency.

Method used

The proposed system incorporates a supercritical reactor system with a moving bed reactor and a solids extraction system, which generates supercritical conditions to effectively separate inorganic and organic compounds, and includes a sulfur trap material and catalyst to transform undesirable compounds into inert or recyclable forms.

Benefits of technology

This system achieves robust and economical treatment of aqueous effluents by reducing pollutant output, enhancing energy efficiency, and minimizing the need for post-treatment of output products, while efficiently separating and processing inorganic and organic compounds.

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Abstract

Aqueous effluent treatment system (1) comprising a supercritical reactor system (2), an aqueous effluent source (3) connected upstream via a waste-feed supply pump (P1) to the supercritical reactor system, a fluid extraction system (4) connected downstream to the supercritical reactor system and a solids extraction system (8) connected downstream to the supercritical reactor system, the supercritical reactor system comprising a plurality of reactors each having a vessel with a reactor chamber therein, each reactor operable to generate pressures exceeding 22.1 MPa and temperatures exceeding 374°C configured to generate a supercritical zone in the reactor chamber. At least one reactor is a first moving bed reactor, the first moving bed reactor comprising: - a fluid effluent outlet (25) at a top of the first moving bed reactor chamber, - a solid particles feed inlet (36) at the top of the first moving bed reactor chamber for injection of moving bed solid particles in the reactor chamber, and - a solids outlet (30) connected to the solids extraction system for extraction of solid particles from the first moving bed reactor chamber.
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Citation Information

Patent Citations

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    WO2020173888A1

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  • Process for the gasification of wet biomass

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