Chemical Industry Belt Filter Press for Chemical Slurry Treatment - Acid Resistant Model

Belt filter press description

The belt filter (sometimes called a belt press filter, or belt filter press) is an industrial machine, used for solid/liquid separation processes, particularly the dewatering of sludges in the chemical industry, mining and water treatment. Belt filter presses are also used in the production of apple juice, cider and winemaking. The process of filtration is primarily obtained by passing a pair of filtering cloths and belts through a system of rollers. The system takes a sludge or slurry as a feed, and separates it into a filtrate and a solid cake.

Belt filter press principle

Belt filter presses are used to dewater primary and/or waste activated sludges (WAS), such as those that come from aerobic or anaerobic digestion.

Belt filter presses are manufactured as either two-belt or three-belt units. The current preference is that belt filter presses have three belts, which enables the gravity zone to operate independently from the pressing zones. Belt filter presses basically have three different zones:
■ gravity zone,
■ medium pressure zone (wedge zone), and
■ high pressure zone (shear zone).
Solids must be conditioned with polymer prior to being applied to a belt filter press. The polymer is used to release the water from the solids so that most of the water is removed on the gravity zone and additional water is then removed in the pressing zones.
Approximately 60% to 70% of the water should be removed through the gravity zone with the remaining water removed in the wedge and shear zones.

Belt Filter Press Advantage

• Automatic Operation
• High throughput capacities
• Superior cake dryness
• Belts of equal length
• Increased belt life thanks to constant torque dual motor system
• VFD controlled belt drive
• Flexible to the inlet sludge
• High quality construction
• Durable heavy duty design
• Reduced whole life cost
• Low energy consumption
• Low polymer consumption
• 7 to 11 High pressure rollers
• Hydraulic belt tensioning and centering
• Integrated belt washing pump
• Self-cleaning spray nozzles
• Sludge inlet reactor vessel or conical reactor distribution reaction tank

Belt filter press features

• high quality components (only stainless steel construction),
• low energy consumption and operating cost,
• clean operation,
• operator safety devices,
• easy access for supervision and maintenance,
• visual control of the sludge during dewatering

Belt filter press applications

• Thickening and dewatering in one stage (thank to efficient thickening zone or combined with gravity belt table)
• Municipal and industrial sludge
• High efficiency in specific applications: pulp & paper, manure, biogas, slaughterhouse, chemical sludge, etc.