Articles & Case Studies

WEHRLE gains order for further MBT treatment plant in Spain

Posted: Friday 2nd November 2012

With the order for the installation of a wastewater treatment plant at the Manises landfill site, in Valencia, Spain, WEHRLE Umwelt GmbH further expands its market leadership in treating water from mechanical-biological waste treat-ment (MBT) and composting on the Iberian peninsula. This new project is WEHRLE’s eighth in Spain within eight years for treating this type of highly loaded wastewater.

The customer is the ‘SFS INSTALACION 3’ consortium, consisting of environ-mental service providers SAV, FCC and Secopsa.

In the new composting plant organic waste will be treated using a surface area of more than 25,000 m². Three processing lines will be available for the treatment; the total capacity of treatment being 250,000 tonnes in the first year, increasing to 350,000 tonnes per year over the 20-year lifespan.

The wastewater volume resulting from the treatment and composting process will be approximately 25,000 m³ per year. WEHRLE’s treatment concept is based on the BIOMEMBRAT® membrane bioreactor (MBR) process. The MBR system design is ideally suited to work in synergy with the composting plant, providing a total concept project solution at Manises.

In the highly loaded MBR biology, carbon and nitrogen compounds are degraded first. To fulfil the strict requirements for direct discharge (COD < 160 mg/l and chloride < 2000 mg/l) and also to comply with the high standards demanded for water reuse (by internal recirculation on site) a reverse osmosis system is utilised for secondary treatment of the BIOMEMBRAT® permeate.

The commissioning of the plant is planned for Autumn 2012.

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