New Rejas WRP
Madrid, Spain
Wastewater treatment
Project type
72.000 m³/day
Daily capacity
The Rejas Water Reclamation Plant is designed to treat 72,000 m³ of wastewater per day, strengthening Madrid’s wastewater treatment capacity through infrastructure developed to meet increasingly demanding environmental standards.
The project involves the construction of a new facility within the existing site, delivered in phases to ensure uninterrupted operation of the treatment plant throughout the works.
The upgraded plant incorporates a complete water and sludge treatment process, including advanced biological treatment, anaerobic digestion and energy recovery through biogas. The scheme also includes new industrial buildings, electrical infrastructure, utility networks and environmental improvements across the site.
Project data
Project data
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Average treatment capacity of 72,000 m³/day
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Pre-treatment capacity of up to 15,000 m³/h
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Phased project execution while keeping the plant operational
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Adaptation to new discharge requirements for a sensitive area
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10 new industrial buildings
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3 biological reactors
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3 primary clarifiers (40 m diameter)
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3 secondary clarifiers (46 m diameter)
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3 mesophilic anaerobic digesters
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Biogas system with 2 double-membrane gas holders
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Two 500 kW engine-generators for self-consumption of energy
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New electrical infrastructure featuring 3 transformer substations and a medium-voltage ring network
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