The Study of Discrete Settling Velocity for Raw Water of Tigris River in Kut by Settling Column

Abstract:

The objective of this research is to make settling column for measuring the suspended solids (SS) and dissolved solid (DS) in water by doing discrete and flocculate on it. This device is manufactured in the laboratories at University of Wasit, college of engineering. This device consists of plastic pipe with a diameter and height of 20 cm and 2 m respectively and it has four ports which are located at different depths. Also, it contains moto-diver to rotate the water inside the plastic tube (simulated reality from the river, mix water to prevent sedimentation). This design also involves water tank for storing the sample and moto to transfer water from the tank to the plastic tube. Samples are taken from the Tigris River in the governorate of Waist, Kut City. Samples are taken at depth of 5 meters and the results are accurate with several analyses have been done on it. This project is done by Stokes law in which particles have settled with detention time as a requirement and the depth of the settling tank. The optimum alum ratio is also obtained by jar test which is equal to 450mg/l. The results showed that the best ratio of removing (X˚ /˳) which is equal to 48% and thus finding the detention time in the tank and depth of tank as a purpose of design sedimentation tank with these requirements.

• Periodical: Key Engineering Materials (Volume 870)
• Pages: 123-132
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.870.123
• Online since: October 2020
• Authors: Mohammed S. Shamkhi*, Nuralhuda A. Jasim
• Keywords: Discrete Settling, Flocculent Settling, Settling Column, Settling Efficency, Settling Velocity

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