After processing, many organic wastes still contain substances that settle in the fermenter (eg stones, sand, bone fragments, pieces of glass, egg shells, etc.). For fermenters to fulfill their function permanently, these suspended solids must be discharged on a regular basis. The floor cleaning system is used for the continuous discharge of sinking substances from the fermenter. The system consists of the patented mechanical floor scraper, the sediment discharge pump and the sediment separator.