water and wastewater treatment units; water and wastewater purifying units; units for the biological treatment of wastewater; units for the treatment by waste activated sludge; units for the treatment by waste activated sludge and by alternating decanting and aeration sequences; units for the clarification of wastewater which have been treated by a biological treatment

Machines for processing discarded plastics into resin, resin components and additives for use in new moldings, extrudates and castings