Hydria Water has recently delivered several products from the portfolio to a returning client in Mexico. Previously there was plastic chain & flight scrapers with scum pipes and a stepscreen of Cross Screen XS type for the inlet screening. The latest order included a Disc Press QS from our Mellegard & Naij portfolio, the machine is a recently developed machine for sludge dewatering. The Disc Press QS is a machine based on the screw press principle whereas the sludge is transported inside stainless rings which inert is with a screw transporting the sludge through the set of inclined rings and pressed against a counter pressure plate to achieve as dry sludge as possible. The reject water is drained through the slots between the rings and taken for further treatment..