Harvest Power‘s Energy Garden in Central Florida is designed to simultaneously address four challenges with one integrated solution:
Located at Reedy Creek Improvement District, this anaerobic digester processes 130,000 tons per year of biosolids, fats, oils, grease, and food waste and has 3.2 MW of installed power generation capacity and 2.2 MW of recoverable heat from a biogas-fueled combined heat and power system (CHP), plus class AA granular fertilizer and phosphorous-rich Struvite sold as a fertilizer additive.
LOCAL PARTNERS: Reedy Creek Improvement District (RCID), Reedy Creek Environmental Services (RCES), Walt Disney World Resort, and all local participating hotels, restaurants, food processors and haulers.
PROJECT SERVICE PROVIDERS AND VENDORS: Bio-Conversion Solutions (BCS), Biorem Technologies Inc., Caterpillar (CAT Finance), Crystalactor, Entec Biogas GmbH, Environ, Inc., Florida Aquastore, Flottwegg, Golder Associates, Komline-Sanderson, Layne, Inc., Odotech, World Water Works Demon(TM), Ring Power Corporation, Sattler*. PUBLIC RELATIONS: Featured in BioCycle*, the front page of the Orlando Sentinel, the Orlando Business Journal, WFTV News 9, Green Lodging News, and on National Public Radio’s (NPR) Morning Edition.
Reduction of odor excursions and/or odor events was one of the main objectives of the project. As HPO ramped-up, RCID was able to discontinue Aerated Static Pile (ASP) composting operations for biosolids and food waste. Also, at the same time as HPO was beginning operations, RCID modified the WWTP and diverted a sidestream of WAS to the headworks at a rate of about 0.1Q, which cut the H2S levels at the headworks significantly. Finally the HPO odor control system collects potentially odorous air from the food waste receiving pit, centrate sump, FOG tank, dryer exhaust and other locations within the plant and applies biofiltration with activated carbon polishing prior to atmospheric discharge.
RCID has installed an OdoWatch system with 4 “e-noses” to monitor treatment plant, composting and HPO odor signatures and has been able to verify the odor reduction associated with the measures described above. RCID has not experienced any significant odor events since the HPO project and other measures became active.