Page last updated 30/08/2018
Brick dome biogas plant (Deenbandhu) design
Diagram of a brick dome plant
Drawing of a brick dome plant
Parameters for brick dome design
Parameter
Length (m)
R 1
1.28
R 2
2.02
D
2.55
A Deenbandhu plant is made from rings of bricks placed so that each ring “locks” in place when it is complete. The alignment of the bricks is defined by a guide, which is a stick that rotates around a central spike mounted on a pillar built on the floor of the plant. As the dome gets higher, bricks are held in place by weights until the ring is complete.
A standard Deenbandhu plant has a calculated total internal volume of 5.55 m 3 , although not all of the internal volume is used for slurry. The actual value is more like 4.7 m 3 . The quoted daily gas production from cattle dung is 2 m 3  per day, although the actual gas production depends on the feed and the ambient temperature. The equations for a volume of a spherical segment can be used to calculate the volumes of the top and bottom parts of the digester.
There are a range of different sizes for Deenbandhu, brick dome, plants, including much larger ones. A sequence of photographs, showing the building of a brick dome plant is available. SKG Sangha have started using the “Suntala” design More details of biogas plant designs are given in the book. 
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Page last updated 30/08/2018
Diagram of a brick dome plant (Deenbandhu)
Diagram of a brick dome plant
Drawing of a brick dome plant with parameters
Brick dome biogas plant (Deenbandhu) design
Parameters for brick dome design
Parameter
Length (m)
R 1
1.28
R 2
2.02
D
2.55
A Deenbandhu plant is made from rings of bricks placed so that each ring “locks” in place when it is complete. The alignment of the bricks is defined by a guide, which is a stick that rotates around a central spike mounted on a pillar built on the floor of the plant. As the dome gets higher, bricks are held in place by weights until the ring is complete.
A standard Deenbandhu plant has a calculated total internal volume of 5.55 m 3 , although not all of the internal volume is used for slurry. The actual value is more like 4.7 m 3 . The quoted daily gas production from cattle dung is 2 m 3  per day, although the actual gas production depends on the feed and the ambient temperature. The equations for a volume of a spherical segment can be used to calculate the volumes of the top and bottom parts of the digester.
There are a range of different sizes for Deenbandhu, brick dome, plants, including much larger ones. A sequence of photographs, showing the building of a brick dome plant is available. SKG Sangha have started using the “Suntala” design More details of biogas plant designs are given in the book. 
Drawing of a brick dome plant