Plant for treatment of sediment of natural and waste waters

A plant for treatment of sediment of natural and waste waters comprising a crystallizer (1), a melter (2) located right under the crystallizer (1), a condensing heat exchanger (4), a compression refrigerating unit (3) communicating with the crystallizer (1) and, via the condensing heat exchanger (4), with the melter (2) communicating with a sediment dehydration apparatus (5), an evaporator (8) of the crystallizer (1) having two coaxially-arranged vertical cylinders (9) joined at the ends by a base (11) and a cover (10), a refrigerant feed unit (13) and a refrigerant discharge unit (15), a planetary gear drive whose shaft (16) carries a sediment application unit (17) and a sediment removal unit (19) characterized in that the crystallizer (1) has the recirculation station (6) communicated with the sediment application unit (17) made in the form of pour-on nozzles (18) installed under the cover (10) of the evaporator (8);

• installed between the cylinders (9) of the evaporator (8), at an angle to their vertical walls with clearances (.delta..sub.1, .delta..sub.2) are the screens (12) while the sediment removal unit (19) is provided with at least two cutting tools (20) with the flexible pick-ups (21), said tools being arranged one under the other and offset in the direction opposite to the rotation of the sediment application unit (17), the refrigerant feed unit (13) has a perforated circular header (14) installed at the base (11) of the evaporator (8), the planetary gear drive has a variable speed drive (23), the melter (2) has sprinkling nozzles 30 and a device for collection and removal of sediment solids, while the condensing heat exchanger (4) located outside of the melter (2) communicates through the pump (29) with the melter (2) and the sprinkling nozzles (30).