
Additional reactor
An effective solution for strengthening the performance of wastewater treatment plants or increasing their treatment capacity.
Réacteur additionnel pour station d'épuration
Adding additional reactors is a relevant technical and economic solution for optimising wastewater treatment without completely rebuilding the installation.
What is an additional reactor for a wastewater treatment plant?
An additional reactor is a modular treatment unit that connects to an existing treatment plant to increase its capacity or improve its purification performance.
These reactors can be installed downstream of or in parallel with conventional treatment lines, depending on the objective.
Part of a continuous improvement approach
Additional reactors are part of a logic of progressive modernisation of sanitation installations.
They make it possible to meet new regulatory requirements, while limiting service interruptions and heavy investments.
They can also be combined with remote monitoring, automation or smart control tools to continuously optimise yields.

The main advantages of additional reactors
Increased treatment capacity
Rather than enlarging the entire plant, an additional reactor will treat a larger volume of effluent, which is ideal in the event of population growth, network extension or connection of new areas.
Improved purification performance
Some plants, especially the oldest ones, are not designed to meet current standards for nitrogen, phosphorus or microbiological discharges.
Additional reactors make it possible to achieve these objectives by incorporating targeted, high-performance treatment.
Flexibility, fast installation and turnkey solution
Designed in a modular, prefabricated form, additional reactors are delivered turnkey, ready to be integrated into the existing installation.
They are quick to install, with minimal on-site intervention and reduced impact on existing operations.
They allow gradual adaptation to needs or constraints and can be integrated into containers.
Economic optimisation
Adding a reactor is often more economical than a complete renovation.
It limits capital expenditure and civil engineering work, and allows for faster commissioning.
Adaptability to load variations
Some plants experience significant seasonal variations (mountain, coastal and tourist areas).
Additional reactors are sized to absorb occasional load peaks without affecting discharge quality.
Common types of application
Additional reactors integrate into treatment installations for wastewater, greywater, blackwater and grease-laden water.
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Fixed-culture reactor or SBR to increase the organic load treated without enlarging existing basins.
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Nitrification/denitrification process to meet nitrogen discharge requirements.
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Tertiary treatment (filtration, UV disinfection or ozonation) for high-quality final treatment.

Conclusion
Faced with growing challenges in wastewater treatment, additional reactors offer a flexible, scalable and economical technical solution.
They make it possible to quickly adapt treatment plants to new constraints without heavy construction work.
It is a strategic alternative for local authorities, industrial operators and managers concerned with performance, compliance and sustainability.
Do you have a project?
AGELYO responds to all requests for additional reactors for wastewater treatment plants anywhere in:
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France and in Europe,
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the Maghreb (Mauritania, Tunisia, Algeria, Morocco),
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West and Central Africa (Benin, Burkina Faso, Ivory Coast, Guinea, Mali, Niger, Senegal, Togo, Cameroon, Congo, Gabon, Chad),
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East Africa (Kenya, Uganda, Rwanda, Tanzania, Burundi),
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Indian Ocean (Madagascar, Mauritius),
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in the overseas territories (DOM-TOM) (French Guiana, Mayotte, Réunion).
