Gravity belt thickener

The gravity belt thickener, ING type, is installed on medium and large treatment plants, generally upstream sludge digestion systems. This machine is mainly composed of: a sturdy frame in metallic carpentry, having a profile suitable for belt sliding; a belt, closed ring type, for the transport of sludge to be dewatered; a motorized roller with power-operated variable-speed drive for belt pulling; two rollers having the function of belt movement transmission and pulling of the same; a system of ploughshares increasing the efficiency of dewatering by gravity; a flanged connection for the inlet of sludge to be dewatered; a lower tank for the collection of drainage water; a flanged connection for dewatered sludge outlet; an internal system for belt washing by high pressure nozzles; a carter of complete closing of the machine provided with suitable opening for the connection of the possible deodorization suction plant. The sludge, through a flanged connection, reaches a static distributor, distributing the sludge equally on the surface of moving belt. The water streams for gravity through the belt and it is collected in one or more tanks beneath. A system of ploughshares tuning over the sludge, creates further inter-spaces for the filtration, facilitating and improving the dewatering. The dewatered sludge, when reaches the last horizontal part of the belt run, is discharged by a rectangular flange. The belt is washed along the back lower part towards the zone of charge of the machine, by a system of high pressure nozzles. Then the washing water is collected with the drainage water into the tank beneath. The simplicity of construction of the machine and the high quality of all the components assure always high performances and reliability. The standard construction is with hot dip galvanized steel frame while other parts in contact with water in stainless steel. On demand, it is possible the construction with particular protection or completely made of stainless steel.