Costs Considerations
Observed costs for RBCs are highly variable depending on climate and location. Generally, RBCs involve high capital costs as not all materials may be locally available and motor and special material for rotation is required. Another cost factor may be manufacture and implementation, which requires skilled experts (SANIMAS 2005).
Operation and maintenance costs are also relatively high, because operation requires a continuous electricity supply and supervision requires semi-skilled labour (U.S.EPA 1980) and professional operator (SANIMAS 2005).