Filtration

1. Plate & Frame filter
Made by Kashish Wilson
Assistant Professor,
MM College of Pharmacy,MM(DU)Mullana

2. Introduction
 The plate and frame design utilizes a flat, solid plate (known as a “flush
plate”) covered by a filter press cloth, with a hollow frame between each
plate. A metal skeleton holds and clamps the filter plates together to create a
chamber, which is formed by the flush plate on each side of a frame.

3. Principle
 The working principle of filter presses is that slurry is pumped into the
machine such that solids are distributed evenly during the fill cycle. Solids
build up on the filter cloth, forming the filter cake; the filtrate exits the filter
plates through the corner ports into the manifold, yielding clean filtered
water.

4. Construction

5. Working....

6. Uses
 As a mature solid-liquid separation equipment, plate and frame filter press is
widely used for mining, metallurgy, petroleum, chemical, medicine, textile,
printing, paper making, food, alcohol, inorganic salt, coal washing, dyeing
and sewage treatment industries.
 A filter press is a piece of equipment used in liquid/solid separation.
Specifically, the filter press separates the liquids and solids using pressure
filtration, wherein a slurry is pumped into the filter press and is dewatered
under pressure.

7. Merits & Demerits
 Merits:- The advantages of the plate and frame filter press are: simple
structure, easy operation, stable operation and convenient maintenance;
flexible selection of filter area, small footprint; strong adaptability to
materials, suitable for various small and medium-sized sludge dewatering
treatment.
 Demerits:-Consequently, filter presses have long been used for a wider range
of applications than any other type of filter. However, disadvantages of the
filter press include intermittent operation and high labour requirements.
Therefore filter presses might be regarded as inferior to continuous, vacuum
filters.

8. Thanks......