Belt filter press NPF_MP

automatichigh-pressurefor sludge treatment

The medium pressure belt press for sludge is recommended when it is necessary to obtain a reduction of the water content in sludge. Generally it is installed downstream the sludge treatment lines and consists of a frame in standard section, storage and drain tanks for the filtered water, two joined belts through which the sludge to be dewatered passes, a roller assembly used to drain and compress the sludge, belt puller, belt centring and transmission rollers, a washing system with nozzles for each belt and two sturdy gear motors. The roller assembly comprises one first drainage roller, one second drainage roller, one low pressure roller, one medium pressure roller, three high pressure rollers, two transmission rollers, two belt pullers, two belt centring rollers and four return rollers. The sludge goes in touch with the belt in the higher part of the belt press, crosses the higher length of the belt along which the water drips by gravity and successively falls on the second belt and goes on flowing into a wedge which facilitates the very delicate removal of the water from the sludge. Subsequently the sludge goes into the first drainage roller zone which allows a first slight sludge pressure. The sludge is then submitted to increasingly higher pressures up to the high pressure zone. Roller with small diameters allow high pressures on sludge.