Sludge Dewatering


Sludge PressThe PRESS TECHNOLOGIES model SP TWIN WIRE SLUDGE PRESS is designed to accomplish the continuous dewatering of various kinds of waste slurries by entrainment between two porous synthetic membranes (belts). The belts are supported by either foils or free turning rollers throughout the unit. General construction is to the same high quality standards as other Press Technologies equipment, designed for continuous industrial service.

The SP Twin Wire Sludge Press performs as follows:

The material to be dewatered enters the inlet of the Sludge Thickener either directly from the sludge source or, if chemical flocculants are used, after flocculation. The slurry is distributed across the width of the moving belt and travels along the Gravity Drainage Section of the thickener where free drainage occurs. Chicanes may be utilized in this section for additional thickening and stabilizing of the material prior to entering the next section.

After gravity drainage, the thickened slurry is deposited in the medium pressure, or Wedge Section. At this point the top and bottom belts converge and entrap the sludge between them. The configuration of the belt support media in this section is such that pressure is constantly increased in the machine direction, ensuring continuous drainage and increased stabilization before transferring to the next stage of dewatering.

The final dewatering stage of the SP Twin Wire Sludge Press is the High Pressure, or "S" section. Here the stabilized sludge cake is passed in a serpentine manner between rollers of decreasing diameter, exerting constantly increasing pressure to the material for high consistency prior to discharge from the SP Twin Wire Sludge Press.

The SP Twin Wire Sludge Press has been used with great success in a wide variety of applications - from industrial and municipal waste water treatment to mining and food processing. It is a very effective tool for the economical thickening and disposal of many different kinds of slurries.

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