Filter leaf
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The document summarizes the filter leaf, which is an apparatus used for surface filtration. It consists of a frame enclosing a drainage screen or grooved plate covered with a filter cloth. Vacuum is applied to increase the filtration rate. Filter leaves are versatile, provide a simple form of batch filtration, and can be connected in parallel to increase surface area. They are used to filter dilute suspensions around 5% solid content. Advantages include simplicity, moderate labor costs, and high washing efficiency.
Filter leaf
- 1. FILTER LEAF SRUTHI PRABHA K ASSISTANT PROFESSOR KARUNA COLLEGE OF PHARMACY, PALAKKAD
- 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
- 7. FILTER LEAF • A number of filter leafs are connected to a common outlet- provides a large area for filtration • E.g. sweetland filter
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