PEIF Filterability Index Unit

13.1.- HYDROLOGY AND HYDROGEOLOGY
FILTERABILITY INDEX UNIT - PEIF

INNOVATIVE SYSTEMS

This unit utilises a bed of granular material, normally sand, which can be chosen by the student to suit his own purposes. The measurements taken with this unit enable a filterability index to be calculated which has significance in deep bed filter performance.

See general description

Expansions

ICAI

Interactive Computer Aided Instruction Software

Laboratories

13TV
 Environmental Laboratory for Vocational and Technical Education
13HE
 Environmental Laboratory for Higher Education

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General Description

This unit utilises a bed of granular material, normally sand, which can be chosen by the student to suit his own purposes.The measurements taken with this unit enable a filterability index to be calculated which has significance in deep bed filter performance.

The "PEIF", unit is a bench-top unit composed of a feeding tank, where the initial solution of water with solids in suspension is placed. During the normal operation, the tank is communicated with the sand filter upper part, through of a pipe.

The filter lower part is communicated with the flowmeter. A regulation valve located at the flowmeter allows to change the flow which passes through the filter.

The fluid pressure is obtained by means of the gravity, because the feeding tank is placed in high. The pressure is measured by a manometer.

The filter cartridge is easily removable, so it allows to study the difference between different media, both in compositions and in mesh.

This unit, in addition to students teaching and training, also can be used in routine control at water purification works, or at water treatment works which employ tertiary filtration.

Exercises and guided practices

GUIDED PRACTICAL EXERCISES INCLUDED IN THE MANUAL

  1. Study of the filtration operation principles.
  2. Study of Darcy equation.
  3. Deep bed filtration of suspensions with different beds.
  4. Calculation of Filterability Index.
  5. Sand filter cleaning.

Quality

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