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1. (WO2018102847) PREFABRICATED ANAEROBIC BIODIGESTER

Pub. No.:    WO/2018/102847    International Application No.:    PCT/AU2016/051208
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Sat Dec 10 00:59:59 CET 2016
IPC: C02F 11/04
C02F 3/28
Applicants: ATEC AUSTRALIA-INTERNATIONAL PTY. LTD.
Inventors: JEFFREYS, Ben
HARRIS, Lachlan
Title: PREFABRICATED ANAEROBIC BIODIGESTER
Abstract:
The invention provides a prefabricated anaerobic biodigester (10). The biodigester (10) comprises a biodigestion chamber (11) for containing bioslurry and biogas. The biodigestion chamber (11) includes a feed port (22) for ingress of biodigestible material into the chamber and a gas port (29) for withdrawal of biogas out of the chamber. The biodigester (10) comprises a displacement tank (14) for containing bioslurry, the displacement tank (14) being disposed above the biodigestion chamber (11). The biodigester (10) also comprises a transfer conduit (23) having an inlet opening (25) in the biodigestion chamber (11) and an outlet opening (26) in the displacement tank (14) for flow of bioslurry between the biodigestion chamber (11) and the displacement tank (14). The biodigester (10) is operable such that upon biogas pressure build-up in the biodigestion chamber (11), bioslurry is displaced upwardly through the transfer conduit (23) into the displacement tank (14), and upon withdrawal of biogas from the biodigestion chamber (11), bioslurry in the displacement tank (14) flows downwardly through the transfer conduit (23) into the biodigestion chamber (11).