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IJSTR >> Volume 9 - Issue 8, August 2020 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Effect Of Acidity And Electromagnetic Field Strengths On Raw Water Treatment (Turbidity And Color)

[Full Text]



Noveriansyah, Sri Haryati, Muhammad Djoni Bustan



Water, Turbidity, Color, pH, Electromagnetic, Suspended Particles, Process Duration.



Water is not only used to help the lives of organism such as bathing and washing, but also for consumption. Water is an important component that must be absorbed by the body of living things, both humans, animals, and plants so that water must have a standard that is safe for consumption. Over time, the quality of water sources has declined, resulting in a decrease in quality. The scarcity and decline in the quality of fresh water is accompanied by an increasing need for society and industry. Based on data from the Regional Water Supply Company (PDAM) Tirta Musi Palembang in December 2019 the turbidity level is more than 1200 NTU [1]. This is due to the subsequent solid particles suspended in the water from upstream and downstream of the river. Raw water treatment requires a fee of Rp 3,390 per one cubic meter of clean water [2]. To reduce the cost of raw water treatment, it is necessary to develop methods that replace the use of chemicals, including using strong electromagnetic fields in the raw water treatment process. A study by treating raw water by comparing two water samples to determine the reduction in turbidity removal efficiency. The variations in the intensity of the magnetic field are 1.38 T, 2.76 T, 4.14 T, 5.52 T, 6.9 T, 8.28 T. Turbidity reduced from 662 NTU to 0.36 NTU and from 45.25 NTU becomes 0 NTU [3]. Meanwhile, in other studies, the results obtained in the form of an increase in turbidity removal efficiency from 60% to 99.48% using magnetic flux density 0.7 T. While the results without using a magnetic field are only 18.19% at 1.5 hours and reach a maximum value by 39.14% [4] Therefore, in this study raw water treatment obtained from the Ogan River using a magnetic field was then observed based on the turbidity and color. The variations used are variations in the pH of raw water of 2, 3, 4, and 5. While in the processing process the magnetic field strength variations are carried out by 15 V, 25 V, 35 V, and 45 V. Sampling is done every 30 minutes 4 times the analysis test is then performed. In observing the turbidity value, the best results were obtained at 1.40 NTU, namely in raw water treatment with a pH of 5 and the use of a magnetic field strength of 45 V. While in observing the color value, the best results were obtained at 3 TCU, namely in processing raw water with pH of 3 and the use of a magnetic field strength of 45 V. For the best duration of processing that is for 120 minutes.



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