Agenda: Monday Workshops | Tuesday & Wednesday Sessions | Thursday Site Tours | Keynote Speakers | BioCycle Tap Takeover
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Site ToursThursday, April 16, 2015
One site tour, includes stops at these locations
Additional information to come.
Dirt Hugger's new composting facility in Dallesport (WA) — a nine-acre, 26,000 tons/year facility — that features a half-acre in-floor aeration system capable of positive/negative and reversing aeration. Feedstocks processed include mixed residential yard debris and food scraps, commercial food waste, fruit and fruit processing waste, and liquid brewing feedstocks from the Columbia River Gorge region. Stage One composting takes 14 to 21 days in either windrows (average volume intake) or mass bed ASP (peak volume intake); Stage Two is turned windrow curing on 4.5 acres of cement-stabilized soil.
City of Gresham, Oregon Wastewater Treatment Plant Net-Zero Energy
The City of Gresham Wastewater Treatment Plant (water resource recovery facility) achieved its first net-zero energy consumption day on February 12, 2015, with the excess 2,000 kWh net exported that amount to the grid over a 24 hour period. Net zero was achieved via onsite renewable power using two cogeneration CAT engines fueled by biogas (95% of total electricity produced) and a 420-kilowatt solar electric system (5%). The facility increases biogas production from codigestion of fats, oils and grease. Energy efficiency improvements over the past 5 years also contributed to Gresham WWTP's net zero achievement.
Recology Oregon Compost Inc. operates the Nature's Needs Compost Facility, located in Washington County just outside the City of North Plains. This 66.5 acre facility features 12 acres of paved or improved surfaces for its aerated static pile composting process, a 63,000 gallon leachate treatment tank, and a 1.8 million gallon leachate storage lagoon. The site can process up to 80,000 tons of mixed residential yard debris and food scraps each year.