PENGARUH BUNYI ULTRASONIK TERHADAP ZAT PADAT TERENDAP PADA AIR BAHAN BAKU PDAM
Abstract
Water is a basic need that is essential for human life. Ultrasonic waves cangive the effect of physical, chemical, or biological in water medium. One effect of
ultrasound in this study is the event flocculation of acoustic agglomeration effects
as evidenced by the increase in the volume of solids precipitated. Analysis of the
increase in the volume of solids precipitated performed using Imhoff cone.
Precipitated solids are solids in suspension in a state of calm may settle after a
certain time because of the influence of gravity. Ultrasonic processing is done by
exposure to ultrasonic waves into the water with a certain frequency, causing
collisions between particles due to their molecular vibrations of ultrasound. This
collision will form larger particles so it's easier to settle. This study aims to prove
the influence of ultrasonic sound to solid raw material deposited on the water
taps.
This research uses experimental research design that there are two
groups: control group and the experimental group and the collection of data in the form of measuring volume solids precipitated for 1 hour in a sample of the control group and the experimental group were repeated 16 times repetitions using volumetric methods.
The results showed that the volume of solids deposited in the control group average is 0.08281 and the experimental group the average is 0.12500, from a statistical test Independent - Samples T Test with SPSS 16.0 for windows indicate that Ho refused and Hi acceptable where the probability of 0.05 or 0.001,
meaning that there is influence of ultrasonic sound to solid raw material
deposited on the water taps.
Keywords: effects of acoustic agglomeration, collision, ultrasonic, solids were deposited
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