IN-GROUND BIODIGESTER
In areas where a pit can be excavated, an in ground biodigester, could provide a sanitary solution to the processing of human waste.
Advantages:
- Utilizes methanogen bacteria, similar to those in cow stomachs, breaking down organic waste.
- Fully self-contained system, available in Guatemala.
- Protected in excavation pit, so less likely to be damaged.
- Scalable 600 L. or 1300 L. system, dependent on family size.
- Hand-made biodigesters using second-hand IBC (Intermediate Bulk Container) tanks also an option.
- Alternative to regular compost toilets (no human contact, minimal maintenance, easy, efficient, odorless)
Disadvantages:
- Not viable in rocky terrain, when digging a hole is not feasible.
- Somewhat more expensive than other options.
- Requires a relatively long drain field.