Filterability Index Unit Manufacturer,Supplier and Exporter in China
Product Code : EL-ELE-17873
INTRODUCTION
- Filtration is the separation of a mixture of solids and fluids that includes the passage of most of the fluid through a porous media, which retains most of the solid particles of the mixture.
- The filtering media is the barrier that enables the passage of the liquid while it retains most of the solids, which accumulate in a layer over the surface or filter (filtering bed), so the fluid will go through the solids bed and the retention membrane.
- The Filterability Index Unit, “PEIF”, is a unit for demonstrating the filtering process through a porous media. It enables a water quality test to be made on a suspension to be filtered through sand or similar granular media.
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.
SPECIFICATIONS
- Bench-top unit.
- Anodized aluminum frame and panels made of painted steel.
- Main metallic elements made of stainless steel.
- Diagram in the front panel with distribution of the elements similar to the real one.
- Feeding tank of 1 l capacity.
- Filtration unit, with porous bed filter, removable:
- Height of the filter: 70 mm.
- Test filter cell diameter: 44 mm.
- The filter unit can be dismounted to change the sand.
- A regulation valve controls the flow, which is observed on a flow meter.
- Water flow meter, range: 0.07 - 0.55 l/min.
- Differential manometer of 500 mm, to measure the head loss.
- Corrosion-resistant materials are used.
- The elements and tubing connections of this unit are transparent so that the operation can be observed and air bubbles avoided.
Accessories included with the unit:
- Thermometer, with range from -10º C to 110º C.
Stopwatch.
- 1 l graduated test tube.
- 0.6 l glass beaker to collect filtrate.
- Air pump for purging the manometer.
EXERCISES AND PRACTICAL POSSIBILITIES
- Study of the filtration operation principles.
- Study of Darcy equation.
- Deep bed filtration of suspensions with different beds.
- Calculation of Filterability Index.
- Sand filter cleaning.
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