Anaerobic Digestion In The UK — 2015 Update
Over 90 food waste AD facilities are in operation in the United Kingdom, such as the one near Bridgwater, England (shown above during construction), with many more in the pipeline.

The state of the AD industry in the United Kingdom is dynamic but the potential for further growth is huge, according to the Anaerobic Digestion and Bioresources Association.
Charlotte Morton
BioCycle May 2015, Vol. 56, No. 4, p. 43

On The Road To Power Positive Wastewater Treatment
Construction of a $3 million receiving facility for food waste and other high strength organics was completed in January (left). Biogas from the AD tanks is directed to a gas storage membrane system (right).

Claire Siegrist
BioCycle May 2015, Vol. 56, No. 4, p. 49

 

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Advances In Compost Heat Recovery
A “plug and play” Compost Heat Wagon, operating this winter at Vermont Compost Company, includes a high power aeration fan and an Isobar™ heat recovery system.

Two Vermont enterprises are using heat from active composting piles — up to 1 million Btus of energy per ton of material composted — in greenhouse operations this winter.
Gaelan Brown
BioCycle March/April 2015, Vol. 56, No. 3, p. 34

 

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Adding AD To Existing Composting Site Footprint
The horizontal plug flow digesters, about 115-feet in length, have a longitudinal paddle shaft that slowly rotates. Material traverses the digesters over a typical 21-day retention time.

Two horizontal digesters and an in-vessel composting system enabled the City of Augsburg, Germany to expand processing capacity and include food waste.
Robin Szmidt
BioCycle March/April 2015, Vol. 56, No. 3, p. 42

Integrating Digester, Tunnel Composter In France
Figure 1. Illustration of process flow at SMET 71’s Ecocea facility

The Ecocea anaerobic digestion and composting facility is expected to process 80,500 tons/year of household waste, with biomethane fed into an industrial natural gas network.
Marsha W. Johnston
BioCycle March/April 2015, Vol. 56, No. 3, p. 42

 

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Oregon WWTP’s Energy Net Zero Journey
Haulers connect to the FOG receiving station, comprised of two tanks, a FOG grinder, unload/tank mixing pump and a feed pump. Tipping fee is $.08/gallon. The plant has two 400 kW CAT engines (right).

Energy efficient digester mixers and treatment plant blowers, as well as installation of a solar array, FOG receiving system and two 400 kW CHP engines, are credited with helping to achieve energy net zero performance.
Nora Goldstein
BioCycle March/April 2015, Vol. 56, No. 3, p. 63

Anaerobic Digest
The St. Landry Parish Solid Waste Disposal District installed a vehicle fueling system in 2012.

BioCycle March/April 2015, Vol. 56, No. 3, p. 22