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MEGA’s quaternary treatment technology protects both human health and the environment – in compliance with the latest European Directive.
MEGA’s quaternary treatment technology protects both human health and the environment – in compliance with the latest European Directive.
Optimisation of the incoming wastewater flow and mechanical removal of suspended solids that could affect the performance of subsequent treatment stages. Microscreens or fine mechanical filtration are used to capture particles such as cellulose fibres and other solids present in the wastewater stream.
This stage reduces the risk of equipment fouling and ensures a stable flow rate, which is essential for efficient and reliable oxidation. A properly designed pre-treatment system significantly extends the service life of the entire treatment process.
During the oxidation stage, selected pharmaceutical compounds and hormones are specifically targeted and removed using ozone. The process is controlled through continuous monitoring of residual O₃ 3concentrations to ensure both operational safety and treatment efficiency. Ozone acts as a powerful oxidising agent, breaking down contaminants into less harmful compounds and improving the biodegradability of residual substances.
This stage is essential for meeting regulatory requirements for the removal of substances such as diclofenac, metoprolol, and benzotriazole. Ozonation also helps reduce odour levels and improves overall water quality.
The final stage of the process is designed to remove residual micropollutants and oxidation by-products from the treated water. Granular activated carbon effectively adsorbs a wide range of substances, including pharmaceutical metabolites that may remain after ozonation.
This stage ensures consistently high output quality with extremely low residual concentrations, often below detection limits. GAC filtration is a reliable, well-established, and easy-to-maintain technology that provides an effective final polishing step for the entire treatment process.
The installation at Thomayer University Hospital demonstrated:99.4% removal efficiency for pharmaceutical compounds at commissioning (April 2024), stable long-term performance above 90% (93% in October 2024), and full compliance with the stringent requirements of EU Directive 2024/3019 and the indicative list of the Norway Grants Programme.
MEGA brings extensive experience in water and wastewater treatment. With in-depth expertise in advanced treatment technologies and process engineering, we deliver tailored solutions designed to meet the specific requirements of each project.
Contact us to find out how quaternary treatment technology can help your facility comply with the latest regulatory requirements while contributing to the protection of human health and the environment.
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