THICKENER APPARATUS

Product Description

Industrial sedimentationoperations may be carried out batch wise and continuously in equipment calledthickener. The equipment is a cylindrical tank with openings for a slurry feedand product draw off.

The tank is filled with diluteslurry and slurry is permitted to settle. Continuous thickeners are largediameter, shallow depth tanks with slowly revolving rakes for removing thesludge. The slurry is fed at the center of the tank. Around the top edge of thetank is a clear liquid overflow.

The rake serves to scrap thesludge towards the center of the bottom for discharge. The motion of the rakealso stirs only the sludge layer. This gentle stirring aids in water removalfrom the sludge.

The set-up consists of severalbasic components: a tank to contain the slurry, feed piping and a feed well toallow the feed stream to enter the tank, a rotating rack mechanism to assist inmoving the concentrated solids to the withdrawal points, an underflowsolids-withdrawal system and an overflow launder.

A feed tank, feed pump, and feedtank agitator is provided. A bin for collecting concentrated material is alsoprovided.

Experimentation:

To study the working ofcontinuous type thickener.

Utility Required

Water Supply and Drain.

Electric Supply: Single phase,220 V AC, 1.5 kW.

Floor Area 1 m x 1 m.

Slurry (Paper pulp or CaCo3)