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February 27, 2013

CH2M Hill Wins WEX Global Innovation Award for Optimizing Denmark's Wastewater Nutrient Removal Facility



CH2M HILL (News - Alert) recently announced that it has been recognized with the Water and Energy Exchange (WEX) Global Innovation Award in the water and energy category for optimizing the Ejby Molle Wastewater Treatment Plant (EMWWTP) in Odense, Denmark. The WEX Global Innovation Award, which was presented to the company on Feb. 20, was based on innovations, and environmental considerations, as well as financial savings and energy optimizing options introduced at the EMWWTP.

In a statement, CH2M HILL VP and Technology Senior Fellow Julian Sandino, said that, "VCS Denmark is a very progressive utility, striving to become a model for incorporating sustainability principles in its operations. The energy project was aimed at identifying additional energy optimization opportunities that would further facilitate the achievement of their sustainability goals."

Work on making the EMWTP energy self-sufficient began in early 2012 and is a result of collaborative efforts on the part of both CH2M HILL and Ramboll Denmark. As the largest treatment facility in Odense, Denmark, EMWWTP has been designed with a treatment capacity for supporting a population of 385,000.  

Dr. Sandino said that, "Very few nutrient removal wastewater treatment facilities in the world are able to consider themselves energy self sufficient, let alone net energy positive. This project serves as a model for how to approach an energy optimization project."

Historical operational data of the plant was analyzed and through the use of an advanced mass/energy balance simulation tool, and a collaborative workshop-based approach, a number of energy optimization options (EOOs) were identified. Post the implementation of a few of these operational-oriented EOOs by the plant staff resulted in substantial changes in the level of energy self-sufficiency at the facility. Co-digestion of high-strength organic industrial waste, which is expected to begin this spring at the facility, will help in ensuring a positive net energy condition at the EMWWTP.

A number of other recommendations, which include provision for side stream treatment and enhancement to the oxygen transfer efficiencies within the bioreactors of the facility, also helped in making the plat more energy efficient.  




Edited by Brooke Neuman

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