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Incineration System Improvements MCES St. Paul, MN The Metropolitan Council Environmental Services (MCES) operates the Metropolitan Wastewater Treatment Plant, which services a substantial number of residents in St. Paul and Minneapolis. One of the functions of the plant is to incinerate dry solids in multiple hearth furnaces. MCES solicited design build proposals to reduce the particulate matter emissions from the incinerators in order to comply with EPA standards, and also to reduce maintenance requirements. Alltech Engineering Corp. was awarded the contract for this work. The project consisted of designing and installing isolation gate dampers for the incinerators. There were six open-hearth incinerators that required modification. It was necessary to keep at least four of the incinerators in operation at all times during construction for the plant to maintain production. The existing incinerators had to be modified to accommodate the new dampers. New blowers were furnished and installed, and the existing hydraulic system had to be removed to install a new one. The project also required a new electrical emergency gate lift system and extensive refractory work. The installation passed all testing for conformance with performance specification, and the project was completed on schedule without injury, despite extremely adverse working conditions. |
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