Low maintenance, gravity powered enhanced coagulation systems

EP4598883A1Pending Publication Date: 2025-08-13FIRST WATER TECH SP ZOO

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Patent Information

Application Number: EP2022802295
Authority / Receiving Office: EP · EP
Patent Type: Applications
Current Assignee / Owner
Filing Date: 2022-10-07
Publication Date: 2025-08-13

Application Information

Patent Timeline

07 Oct 2022

Application

EP2022802295

13 Aug 2025

Publication

EP4598883A1

IPC: C02F9/00; C02F1/00; C02F1/28; C02F1/52; C02F1/72; C02F11/06; C02F11/14; C02F11/12

CPC: C02F9/00; C02F1/004; C02F2001/007; C02F2303/16; C02F2305/026; C02F2201/004; C02F1/281; C02F1/5245

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Application Domain

Sludge treatment by de-watering/drying/thickening Water treatment compounds

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AI Technical Summary

Technical Problem

Conventional water treatment technologies face challenges such as high maintenance costs, large footprint, energy-intensive operations, and inefficiencies in removing low molecular weight pollutants and contaminants like PFAS, leading to insufficient effluent quality and environmental impact.

Method used

A low maintenance, gravity-powered enhanced coagulation system utilizing a high efficiency hydraulic flocculator with turbulent flow, self-cleaning clarifier with sludge blanket, and horizontal flow rapid sand filter, along with a continuous sludge treatment and recycling process, to optimize space use and reduce energy consumption and waste production.

Benefits of technology

This system achieves up to 20 times reduction in flocculation chamber hydraulic retention time, decreases waste volume, lowers energy demand, and enhances treatment efficiency, making it more reliable and cost-effective while minimizing operator reliance.

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Abstract

The subject of invention is an installation for enhanced coagulation, sedimentation with pre filtration on a sludge blanket and rapid sand filtration of the liquid industrial streams, in particular raw water or wastewater, comprising at least a first zone equipped with a hydraulic flocculator (1) for improved coagulation arranged upstream of the sedimentation device, a second zone equipped with a clarifier (2) for sedimentation with pre filtration from which is drawn the clarified water and a third zone equipped with filtration device(3). Also, the subject of the invention is a method of treating liquid industrial streams, in particular raw water or wastewater treatment in the installation of invention

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