2. FILTER LEAF
Principle:-
Mechanism- surface filtration
• Filter leaf is an apparatus consisting of a longitudinal drainage
screen covered with a filter cloth
• Vacuum applied to increase the rate of filtration
3. FILTER LEAF
Construction
• A narrow frame enclosing a drainage screen or grooved plate
• Frame available in different shapes- circular, square, or
rectangular
• The whole unit is covered with filter cloth
• The outlet for the filtrate connected to the interior of the frame
through suction
5. FILTER LEAF
Use
• Dilute suspension - solid content about 5%
Advantages:
• Versatile piece of equipment
• Simplest form of batch filter
• A number of filters can be connected parallel to increase the
surface area for filtration
• Labour costs fairly moderate
• The efficiency of washing is high
• Slurry can be filtered from any vessel simply immersing the
filter in a vessel of water can wash the cake