 Biogas
Technology and Design
 Biogas
is the mixture of gas produced by methanogenic bacteria
while acting upon biodegradable materials in an anaerobic
condition. It is mainly composed of 50-70 percent methane,
30-40 percent carbon dioxide, and some other gases. It is
about 20 percent lighter than air. It is an odorless gas
that burns with clear blue flame similar to that of LPG
gas.
The
biogas plant construction under BSP has following characteristics:
-
Fixed Dome (GGC 2047 Model)
-
Sizes 4,6 and 8 cubic meters
-
Feeding materials:
-
Cattle dung & water
-
Human
excreta
-
Individual household plant
-
Feasible upto 2,100 metres altitude
-
Modified GGC-2047 with heap composting technique is recommended
for upto 3,000 metres altitude.
Plant
Feeding, Gas Production & Stove Burning Hours
| Plant
Size M3 |
Initial Dung Feed, kg |
Daily
Dung Feed, Kg (@6-7.5 Kg Dung/M3 Plant Size) |
No.
of Cow Required (@12 Kg Dung/Cow |
Daily
Water Feed, Litres |
Daily
Gas Produced, Lt. (@40 Lt./Kg Dung) |
Daily
Stove Burning Hrs. (@400Lit/Hr |
4 |
2,025 |
24-30 |
2-3 |
24-30 |
960 |
2:24 |
6 |
2,900 |
36-45 |
3-4 |
36-45 |
1,440 |
3:36 |
8 |
3,930 |
48-60 |
4-5 |
48-60 |
1,920 |
4:48 |
10 |
4,490 |
60-75 |
5-6 |
60-75 |
2,400 |
6:00 |
Quantity
of main construction materials:
| Plant
Size M3 |
No. of Cement bag (@50kg/bag) |
Stone
quantity, M3 (Or Bricks, in Number) |
Gravel
in No. of Cement Bag |
Sand
in No. of Cement Bag |
Paint,
in Litre |
4 |
11-12 |
3.5
(1,200) |
30 |
60 |
1.0 |
6 |
13-14 |
4.5
(1,400) |
35 |
70 |
1.0 |
8 |
15-16 |
6.5
(1,700) |
40 |
80 |
1.5 |
10 |
19-21 |
8.0
(2,000) |
50 |
90 |
2.0 |
Savings
and Generation from Biogas Plants
- Fuel
wood saving (tones/year) - 335,344
- Kerosene
saving (liters/year) - 5,365,258
- Bio-compost
fertilizer produced (tons/year) - 285041
- Total
employment in biogas sector- 11,000
Biogas Plant Design
|
