Efficient waste water treatment in the Netherlands
The Waterschapsbedrijf Limburg (WBL) is the public utility company responsible for the transport and treatment of municipal and industrial wastewater and treatment of sludge in the province of Limburg, Netherlands.
To meet their strict energy saving goals and reduce costs WBL wished to investigate innovative and more efficient techniques for waste water treatment. A competitive dialogue process was launched for the design, construction, maintenance and operation of a waste water treatment plant (WWTP) in Venlo. Bids were evaluated based on a life cycle costing approach, which considered a variety of factors, including the amount of biogas produced and waste sludge produced during the process.
The winning bidder has installed a new type of thermal hydrolysis process, which allows for a 15 – 50 % increase in biogas production (used für the Generation of heat and electricity) an a 50 % reduction in sludge production, producing Overall savinbs of 2,7000 tonnes CO2 per year. The plant went into Operation in autumn 2012.
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