Controlling Odors from a Pump Station Surrounded by Upscale Development

This paper describes the odor control challenges and solutions for the 27-year old India Street Pump Station refurbishment in Portland, Maine, and describes an innovative design and approach. Refurbishment of the India Street Pump Station was particularly difficult because its upgrade coincided with some of the largest land development projects ever proposed within the City of Portland.Design of the India Street Pump Station met a number of critical objectives using extensive coordination between the Portland Water District, the City, the developers and their engineers and architects, and the design engineers. An innovative dry media scrubber using a two-stage system of carbon media followed by a dry chemical oxidizing media (i.e., permanganateimpregnated alumina) was designed to meet treatment objectives. An early design initiative identified a synergistic and unique engineering/architectural solution by utilizing a planned seven-story parking garage to locate the stack and achieve optimum atmospheric dispersion of treated air. The brick stack matches the architectural features of the garage and blends into the natural aesthetics of the community.Station design was completed in late summer of 2006, and construction began in early 2007.The project was completed on schedule in January 2009.