This document proposes modifications to existing biogas plant designs to address common inadequacies. It identifies issues such as lack of raw materials like animal dung in sufficient quantities, low fermentation rates in winter, uncontrolled water levels, lack of technology, and oversizing of plants. The proposed solutions include using alternative feedstocks like agricultural waste, insulating plants and storing animal body heat to maintain temperatures, monitoring water levels with a technician, and accounting for uncollected dung in sizing calculations. The presentation aims to improve biogas plant designs and operation to provide more reliable and sustainable renewable energy production.

1. Modified Bio
Gas Plant
* Proposed Idea
By:
ALOK KATIYAR
ANKIT SHAKYA
IIT ROORKEE

2. ABSTRACT
Now a days demand of energy becomes a big crisis for world,
in order to compensate the crisis countries are producing
more and more energy and ultimately environmental safety is
becomes the major issue.
This presentation describes one of best renewable energy
source “BIOGAS PLANT” with the inadequacies in all previous
biogas project and some suggestions to compensate the
inadequacies. This presentation also describes the way to
implement the suggestion and the impact of this project in the
country.

3. INTRODUCTION
“BIOGAS PLANT” is one of the best and cheaper ways to
produce energy without affecting the environment. In
biogas plant the organic mass is converted into biogas
and fertilizer by anaerobic digestion.

4. The inadequacies
Of
Biogas plants in India

5. Unavailability of dung
Low fermentation rate in winters
Uncontrolled amount of water
poured into reactor/plant
Lack of technology
Oversized plant

7. 1. Unavailability of dung
Since now a days animal dung may not be
available in required quantities due to
reduced role of animals in agriculture,
various other materials such as molasses,
pressed cane stalks, various kinds of agro
waste can be used with animal slurry.
e.g. for using agro waste in biogas plant an
additional predigestor is to be added, since
decomposition time of agro waste is more
than animal slurry.

8. 2. Low fermentation rate in winter
One of major cause of the failure of Biogas
plant in India is low fermentation rate in winter
due to drop in ambient temperature.
we can overcome this problem by
• Providing a layer of thermal insulation over
plant.
• In case of individual household plant animals
along with their sheds could be shifted
near/over the plant, their body warmth will
keep the Biogas plant temperature higher
than the ambient temperature.

9. Fig: An individual household plant & animal with their sheds

10. For community Biogas plant proposed
mechanism is
• Building a chamber under the Biogas plant
where the water would be stored for warming
purpose.
• A motor to drive water out of under ground
chamber for external heating.
• An external overhead tank to store water for
heating.
• For heating this water a small fraction of
Biogas could be used for heating.

11. Fig: Community Biogas plant with improved design

12. • Uncontrolled amount of water poured in
rector/plant
A technician could be hired which would
guide people and check proportions of
water and dung before feeding into
plant/reactor.

13. • Oversized plant
In many case studies it has been found that
20-30% animal dung could not be collected,
so this correction factor should be added
while designing Biogas plant.

14. Thank You 
If You have any queries please feel free to write us
at alok.jul15@gmail.com
We will be happy to hear from you ….