Topic
Belt filter presses for sludge dewatering
These presses dewater sludges to produce a cake with a dry solids content of 30% or more in the case of primary sludge
Sludge dewatering
Introduction to sludge dewatering
Dewatering processes provide a concentrated, consolidated product − retaining most of the solids from the original sludge – along with a diluted stream which is predominantly water.
Dewatering processes apply a significant mechanical force to achieve increased water removal over that possible from thickening.
Learn moreMore on sludge dewatering
Topic
Screw presses for sludge dewatering
A screw press is a dewatering technology based on a slowly-rotating (~5 RPM) Archimedean screw within a cylindrical screen
Topic
Filter presses for sludge dewatering
The filter press forces water from the sludge by applying high pressures to sludge layers held between rectangular plates
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The Benenv screw press sludge dewatering machine
Find out more about the Benenv screw press sludge dewatering machine − suitable for all kinds of sludge with high and low viscosity, especially oily sludge
Topic
Rotary presses for sludge dewatering
This technology removes water by passing the sludge through a narrow, rotating parallel-flow channel with porous walls
Topic
Centrifugal sludge dewatering
Centrifugation is used for thickening and dewatering sewage sludge − dewatered sludge has a higher dry solids concentration
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Watermaths: Process Fundamentals for the Design and Operation of Water and Wastewater Treatment Technologies − available as an ebook
Topic
Sludge drying beds and lagoons
Drying beds dewater sludge by allowing the liquid to drain and to evaporate. Lagoons provide dewatering through evaporation
Topic
Other sludge dewatering processes
Electro-dewatering technology provides enhanced removal by non-mechanical means through the application of an electric field
Benenv Screw press for sludge dewatering
Film to demonstrate the stacked screw sludge dewatering machine from Benenv.
This solid-liquid separation equipment can be used for applications including municipal sewage, petrochemical, food & beverage, slaughterhouses and breeding, printing and dyeing, papermaking, leather, pharmaceutical and other industries.
The equipment is suitable for high and low concentration sludge (from 2000mg/L), and for all kinds of sludge with high and low viscosity, especially oily sludge.
Latest features and blogs
Blog
How much is sludge worth?
The UK regulator OFWAT has introduced legislation based on the notion of sludge as a resource. Its value is often expressed in terms of calorific content, and the phosphate is also potentially recoverable. But how exactly should sludge value be quantified?
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