Sludge Dewatering

ROEPERSS belt filter presses are the dewatering of digested sludge containing a high proportion of inorganic or mineral substances, such as municipal and industrial effluent sludge of diverse composition and consistency.

Filter press is a disconnected pressure filter used in cases if the process requires only mechanical separation of sludge, mud, or liquid containing solids into the solid cake and liquid filtrate parts. Filtering occurs in the space formed between the filter plates covered with filter cloth. Liquid passes through permeable filter cloth and retained solid particles left on the chamber filter cake.

The filtration process for the membrane filter press is stopped before as the entire pressure chamber is filled with filter cake is reached. The filter cake is compressed further by means of integrated elastic membranes. Hence the end phase of the filtration with high filling pressures and low throughput is reduced in the membrane filter press.

Screw press is suitable for either sludge thickening or dewatering of biological sludge. It is an economic solution due to the ability to thickening of up to 8% dry solid or dewater of up to 25% dry solids. The system can operate automatically or manually – either continuously or intermittently for batch processing.