Fixed dome digesters, also known as Chinese fixed dome digesters, are one of the most well-known biogas generators in the world. As suggested by their name, these originated in China circa. 1936[1]. Due to their relative simplicity and use of readily available materials both as fuel and in construction, fixed dome digesters have become increasingly popular throughout the world as more and more people turn to alternative energy as a way of life. The typical structure of a fixed dome digester
Pros
- Sturdy and possible to build from brick and mortar
- Unobtrusive- typically buried
Cons
- Skilled bricklayers needed to construct a good gas collection dome
- Entire structure must be airtight in order to keep collected methane from escaping
- Typically underground construction limits accessibility and repair