"Ultrafiltration and Membrane Bioreactor." Water & Process Technologies: Water, wastewater and process systems solutions. http://www.gewater.com/products/equipment/mf_uf_mbr/index.jsp (accessed November 9, 2010).
One of the websites I originally looked at did say that manure digesters aren't overly effective, but considering the amount of information available on them I think the must have some merit. This was the link: Digesters
I also found some information, including a picture, on smaller scale digesters for private use.
Lazcano, Joy M.. "Cooking out of kitchen wastes." http://sntpost.stii.dost.gov.ph/NewPOST/JanMar2007/Cooking%20out%20of%20kitchen%20wastes.htm (accessed Dec. 9, 2010).