festbettku00f6rperblock and ancillary festbettku00f6rper

摘要

Block solid body for the biological treatment of wastewater from a plurality of elements, particularly of tubular shape, connected together bed, through which can flow a liquid in all directions of the coordinate system, of a material whose specific gravity less than water, comprising at least one additional element with a specific weight calculated such that the specific weight of the entire block of solid body exceeds the specific weight of water. The invention also relates to a corresponding solid bed body.