plan

2. (1) Loading Platform
• The Gobar Bank
members bring the
dung everyday to the
community biogas plant
which is weighed and
accounted for in their
pass books.

3. (2) Slurry Preparation
• The cattle dung taken from
dung loading platform area
is delivered to feed
preparation tank section.
• The fed dung is mixed with
water for maintaining ratio
of 1:1 for fresh cattle dung
and 1:1.25 for stale (hard)
cattle dung.
• The mixture is then
mechanically mixed to
have homogeneous slurry.

4. (3) Anaerobic Digestion
• Anaerobic digestion tank
(biogas digester) creates an
anaerobic condition to
generate methane gas by
methanogenic bacteria.
• The digester employed
here is mostly KVIC model
with floating dome & water
jacket.
• The water jacket helps in
curbing the methane
leakage and wastage.

5. (4) Common Collecting Tank
An intermediate gas
storage before Pressure
regulating tank for
distribution to
concerned beneficiaries.

6. (5) Pressure Regulating Tank
• Gas is compressed by
blower and fed to the
pressure regulating
tank where gas is
upgraded due to the
passage of pressure

7. An happy villager with her biogas connection and
equipment

8. The Slurry being transported to composting
pits.

9. The
Compost.

10. The slurry generated by
plants are being
converted
these
into
biogas
Vermi
‐Compost for Organic Farming.
This Compost is very good fertilizer for the
agriculture having rich nutrient values.

11. Vermi- Compost
Unit

12. I. Size of Biogas Plant‐ 85 m3/day
•No. of families Beneficiaries—50
•Cow dung required—2 Tons/day‐ Rs 250/Ton
•A complex of 20 community toilets
•Gas utilization—Cooking
•If for Cooking – 2 hrs. morning & 2 hrs. evening(1.5 m3/family per
day)
•Pipeline length—up to 1km. distance
•Pipe quality—HDPE, pressurize system—0.3
kg./cm2(Rs. 2.5 lacs cost)
•Gas charge—150/month‐family

13. II. Raw material—Cow dung+ Toilet (community-
20 toilets costs 1.5lacs)
III. Slurry Management—Biogas digested slurry
Four options-
1. Liquid slurry
2. Recycle water (upto 40 to 50% only)
3. Dry slurry
4. Semi dry
750 kg semi dry slurry @ Rs 2/- per kg costs Rs 1500/day
•Local consumption of slurry is advised
•Quality of slurry should be maintained

14. Cost
• Plant Cost – Rs 4,50,000/‐
• Pipe Line Cost – Rs 1,50,000
• Appliances 50*400 – Rs 20,000
• Pressurizing System – Rs 2,00,000
• Manpower ( Mechanic – 5000, Helper ‐3000 ) – 96,000
Income‐
• Gas – 150*50 – Rs 7500/ month = Rs 90,000/yr
• Slurry – Rs 1500/day = Rs 5,00,000/yr
• CDM Benefits – Rs 71,000/yr

15. Cost estimates
• Non‐ recurring cost—Rs. 8,20,000
• Recurring/ Variable cost—Rs. 2,12,000
• Manpower‐‐ Rs.96,000
• Depreciation—Rs.80,000
•Sum of recurring cost‐ 3,88,000
• Revenue generation‐5,90,000‐3,88,000=
Rs.2,02,000
Note‐ In addition to this Carbon credit benefit to the
tune of Rs.71,000/yr will also be available.

16. 2. Large Scale/ Community level Biogas Enterprises for
Electricity Generation and supply for domestic consumption, water
supply and community consumption and Rural sanitation
• 15 KVA Power Generating System from ‐85 m3/day Biogas Plant
• No. of families Beneficiaries
—50
• No. of Animals—200
• Cow dung required—2 Tons/day‐ Rs 250/Ton
• Gas utilization— Electricity
• Domestic connection—2CFL, 1 Fan= 100 Wt.*50=5000Wt.
• Water supply connection—4000 Wt.
• Community Hall—2 CFL, 2 Fan & 1 TV.= 500 Wt.