JEFFREY HARLAND BRAGG
Pilots at Riv Rd, Augusta, ME
License number
Maine A0201330
Issued Date
Mar 2017
Expiration Date
Mar 2019
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
3535 W River Rd, Augusta, ME 04330
Professional information
Modular, Scalable High Solids Methane Digester For Small-Sized To Medium-Sized Farms
US Patent:
2013031, Dec 5, 2013
Filed:
May 31, 2012
Appl. No.:
13/484957
Inventors:
Jeffrey H. Bragg - Sidney ME, US
International Classification:
C02F 11/12, E04B 1/38, E04B 1/00, C02F 11/02, E04B 1/66, C02F 103/20
US Classification:
210609, 210171, 210613, 527414, 5274521, 527411
Abstract:
A modular methane digester facility includes prefabricated portable concrete panels and a flexible membrane roof sealing an interior space of the methane digester. A separator-conveyor dewatering device, integratable into the front end of the methane digester facility, separates a semi-solid liquid manure into a liquid portion and a solid portion. A method of dual-stage methane digestion includes stacking a solid stage in a methane digester and supplying a liquid stage to the top of the solid stage. The liquid stage percolates by gravity through the solid stage, the solid stage acts as a filter for the liquid stage, and the liquid stage acts as a methanogenic buffer for the solid stage. A method of pre-heating a mass of solids in a methane digester to a mesophilic temperature includes supplying oxygen to the mass of solids in the form of ambient air supplied to the methane digester by a reverse-air pump.