With Sci-tech Cake and depth Filtration Apparatus Model FM 129 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.
cake and depth filtration with different suspensions and filter medium layers.
1. Fundamentals of cake and depth filtration
2. Filter element with sintered filter medium on its bottom to capture the particles
3. Pressure loss measurement with twin tube manometers
4. Height-adjustable filler hopper made of DURAN glass
5. Flow meter with needle valve for adjustment
filter chamber height: 85mm
inside diameter: approx. 37mm
cross-sectional area: approx. 11cm2
tube material: DURAN glass
Filter medium, sintered filter SIKA 100
pore size: 100μm
material: sintered metal
flow rate: 40…360mL/min
pressure: 2x 0…500mmWC
1x 1000mL, scale division: 10mL
1x 100mL, scale division: 2mL
Fundamentals of filtration: Darcy’s equation
Depth filtration with different bulk solids and suspensions
Cake filtration with different suspensions
Identification of characteristic filtration values
Mains Power 220 – 240V @ 50Hz, 1Ph