The processes in depth filtration and cake filtration can be observed and investigated. The suspension (water and diatomite as the solid) flows from the hopper into the top of the filter element, where the solids are separated off. The filtrate flows through a flow meter into the drain. The filter element has a porous filter medium at the bottom. In cake filtration, the filter medium provides the foundation for build-up of the filter cake. In depth filtration, the filter medium supports the bulk solids (filter medium layer; gravel). Twin tube manometers measure the pressure loss over the filter element. The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
EXPERIMENTS
Fundamentals of filtration: Darcy’s equation
Depth filtration with different bulk solids and suspensions
Cake filtration with different suspensions
Identification of characteristic filtration values
SPECIFICATION
Fundamentals of cake and depth filtration
Filter element with sintered filter medium on its bottom to capture the particles
Pressure loss measurement with 2-tube manometer
Height-adjustable filler hopper made of DURAN glass
Flow meter with needle valve for adjustment
Balance to register the filtrate quantity available as accessory
