Membrane digester

Submitted by Nick Chase on
Last changed on 08 Apr, 2016 - 16:30

Sausage style biogas digester

Most simply an in-ground tube with no sun protection and effluent flow into collection pit. Most of the time called Salchicha or Sausage system. The materials move from one side of the tube (inlet) to the other side of the tube (outlet)

Materials

PE digester

PE (poly ethylene) tube digesters are applied in Bolivia (Peru, Ecuador, Colombia and Mexico). The tube PE film is about 300 microns thick. It is bended at the ends and has PVC drainage pipe. PE tubes are very cheap but quite fragile.

EPDM digester

Sausages can be produced using EPDM (ethylene polypropylene diene monomer (M-class).

Variants

Mexican Salchicha style

No info yet

Kenya Flexibiogas style

The Kenya based company Flexibiogas offers a system that includes the flexible digester bag as well as a foil greenhouse cover.

Links

http://www.sgpindia.org/documents/Biogas_Plants.pdf