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Adana Wastewater Treatment Plants

Process train

Screening, primary settlement, trickling filters and conventional activated sludge; anaerobic digestion of resulting sludges with biogas recovery

Design capacity (West Adana)


Design capacity (East Adana)


Influent BOD (West Adana)


Influent BOD (East Adana)


Equivalent population (West Adana)

1.15 million (2010), 1.76 million (2025)

Equivalent population (East Adana)

710,000 (2015), 924,000 (2025)

Energy recovery (biogas)

Approx 50% of plant operating needs

Contract type

Build, operate, transfer

Operation contract duration

3 years

Project cost


Contract awarded

25 November 1999

Construction start-up

December 1999

Construction completed

December 2002

Commissioning ends

December 2003 (Adana East was modified in June 2006 )

Transfer scheduled

June 2007 (extended until June 2008)


Adana Water and Sewerage Administration (Adana Municipality) (ASKI)

Main contractor

Yüksel Ener Wabag Serco Consortium

Consortium partners

Va Tech Wabag, Serco Group, Yüksel Construction, Ener Construction

Process system consultant


Storm water canal supervision

Montgomery Watson and Sigmatek


Adana Metropolitan Municipality, ASKI, European Investment Bank

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