Environment

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Prairie Swine Centre is an affiliate of the University of Saskatchewan


Prairie Swine Centre is grateful for the assistance of the George Morris Centre in developing the economics portion of Pork Insight.

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Author(s): Cheng, J.C. and Liu, B.
Publication Date: January 1, 1998
Reference: Paper 9844100, 1998 ASAE Annual International Meeting. July 12-14, 1998. ASAE, 2950, Niles Road, St.Joseph, MI 49085-9659. 8p.
Country: United States

Summary:

In North Carolina much of the feed is imported into the state and hogs exported, leaving the manure in state as a result of the production process. This study examined a anaerobic biofilm digestor with intermittent aeration, and evaluated the effectiveness of energy recovery, organics reduction and nutrient removal from swine effluent. A significant reduction in organics (66% COD and 56% TOC) and suspended solids (68% TSS and 72% VSS) was realized in the anaerobic digestor, and biogas production was 43.2 ml per litre of digestor volume per day, achieving a methane content of 85%. Organics reduction and strong nitrification were achieved through the aeration tank, however no significant denitrification was observed in the intermittent aeration process.

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