Cold weather protection
87. If the temperature where you are often falls below 15°C,
you will have to keep the waste mixture in your biogas unit warm.
88. If you put your biogas unit under the ground or partly under
the ground, this will help to keep the waste warm.
Keep the waste warm
89. You can keep the waste mixture in your biogas unit warm by
putting leaves, grass, straw or maize stalks around the large drum.
Keep the mixture warm
90. You can also keep it warm by adding a bucket or two of poultry
drop, pigs mixed with other waste to the waste already in the large drum. Use
one part of poultry droppings to three parts of other waste.