[ Ссылка ] - What is a methane digester? A methane digester, also known as an anaerobic digester, is a mechanical system for converting organic waste, such as cow manure, into biogas, fertilizer and other valuable commodities.
Methane digesters are most common on livestock farms, such as for pigs and dairy cows, but may also be used to create biogas from municipal waste. Animal manure may be captured by itself or combined with other materials, such as food scraps and spent cooking oils.
The term aerobic, like in aerobic exercise, means with air. The term anaerobic means without air. Animal waste and other materials are combined in an airtight tank where it is heated to 100-102 degrees and mixed several times a day.
The process of anaerobic digestion takes 2-4 weeks during which time the organic waste material is broken down into two valuable commodities: biogas and solid digested material, or digestate.
Biogas which is captured and refined for use as diesel fuel, electricity, propane, etc. Biogas may be used as an alternative to fossil fuels for heating, electricity or to power vehicles.
Digestate may be used as nutrient-rich fertilizer and other products.
A methane digester can produce heat and electricity for use locally or may be sold back to the utilities as gas and electricity.
More information on biogas digestion systems: [ Ссылка ]
