Patent ID: 11858870
Assignee: DARI-TECH, INC.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. An anaerobic digester system comprising:
a primary digester tank, defining each of a digester tank lower tank opening and a biogas opening, the primary digester tank being configured for containing a primary feed material portion defining a primary feed material level and a primary digester tank head pressure when in operation, the digester tank lower tank opening being positioned beneath the primary feed material level and the biogas opening being positioned above the primary feed material level;
a secondary digester tank, defining a secondary tank lower tank opening and comprising a pump, the secondary digester tank being configured for containing a secondary feed material portion defining a secondary feed material level and a secondary digester tank head pressure when in operation, the secondary tank lower tank opening and the pump each being positioned beneath the secondary feed material level;
a first conduit communicating the primary digester tank lower tank opening to the secondary digester tank lower tank opening; and
a flow control valve configured to allow flow of fluid through the first conduit, from the primary digester tank to the secondary digester tank in an interval defined by the primary tank head pressure being sufficiently greater than the secondary tank head pressure so as to motivate a flow of primary feed material from the primary digester tank to the secondary digester tank upon opening the valve.