The present set-up is designed to study the characteristics of a filter column. It consists of a column filled with Ballotini packing to ensure the good water distribution. 41 Nos. Slotted pressure tapings are mounted on the column for measuring the pressure drop across the bed per unit length and staggered over an approximate 0.8 m depth. These tapings are connected to a differential manometer. These tapings can also be used for drawing the samples from the column and change in concentration of the suspension can be determined.

The unit is complete with 2 Nos. of feed tanks. A centrifugal pump is provided to circulate the water through the column under 1 Atmospheric pressure. Water supplied to the column is regulated and controlled by Rotameter. The 10 kg bag of filter medium will be supplied with the set-up i.e. Sand of BSS 16-30.

EXPERIMENTATIONS:

• To study the increase in loss of head with respect to time in the filter bed.

• To plot the pressure drop profile through the filter bed.

• To demonstrate the reversed flow fluidization and backwashing.

• To measure the suspension concentration profile through the filter bed.

UTILITIES REQUIRED:

• Water supply.

• Electricity Supply

  • 1 Phase, 220 V AC.

TECHNICAL DETAILS:

• Column

  • Material

    • Perspex

  • ID

    • 100 mm

  • Length

    • 1350 mm (approximately)

• Packing

  • Material

    • Ballotini

  • Weight

    • 1 kg.

• Feed Tanks

  • Capacity

    • 200 Ltrs.

  • Quantity

    • 2 Nos.

• Water Circulation

  • FHP Pump

• Flow Measurement

  • Rotameter for Water, 0.5 to 5 L/min.

• Pressure Tapings

  • 41 Nos. given on 20 mm equidistance from the bottom.

• Sampling Ports

  • 41 Nos.

• Control panel comprising of Standard make On/off switch, mains Indicator etc.      

• The whole set-up is well designed and arranged in a good quality painted structure.