DOMESTIC DIGESTER Russian patent published in 2013 - IPC C02F11/04 

FIELD: process engineering.

SUBSTANCE: invention relates to recovery of biological nitrogen- and carbon-bearing wastes by anaerobic fermentation for production of high-quality fertiliser. Domestic digester comprises heat-isolated body 1 divided by partitions 4 into intercommunicated fermentation chambers 5, loading pipe 2 and discharge pipe 3 and biogas discharge hydraulic gate 9. Perforated partitions are arranged inside said body one above the other while loading pipe is furnished with feed valve 12. Body insulation is composed of two spaced apart layers. Every layer consists of inner heat-reflective layer and outer heat-isolation layer while resistive heater is arranged between said layers and distributed over inner layer surface. Temperature gage is provided to control air temperature in air gap. Digester inner surface has antirust polymer coating. Stiff jacket covers the digester from outside. Feed valve represents a flexible immersed leaf shutter located at top partition.

EFFECT: compact design, simple use, lower costs, fire safety.

4 cl, 4 dwg