Optimization of Chemical Dosage in External Water Treatment Plant

Yulisa Nurvera Silaban, Gani Supriyanto, Rengga Arnalis Renjani

Abstract

ABSTRACT. This research focuses on determining the optimal doses of aluminum sulfate (Al₂(SO₄)₃) and soda ash (Na₂CO₃) in the water treatment process at the External Water Treatment Plant (EWTP). Improper use of chemicals can lead to waste and negative environmental impacts. Therefore, the jar test method was employed to evaluate the effect of various dose ratios on water quality parameters, including pH, Total Dissolved Solids (TDS), and turbidity. The study results indicate that the combined doses of alum and soda ash significantly impact all three water quality parameters. The optimal point is achieved at an alum:soda ash dose ratio of 1.24–1.26. This ratio provides the best balance between increasing pH, decreasing turbidity, and controlling TDS. Consequently, this research offers important recommendations for enhancing the efficiency and sustainability of the water treatment process.  
Keywords:Aluminum sulfate, Optimum dose, Water quality, Soda ash, Water treatment plant

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References

[1]. Khairunnisa, Amilla. 2023. "Determination of Optimal Dose of Coagulant in Perumda Tirta Pengabuan Clean Water Treatment." 13(1):104–16.

[2]. Ningsih, Silvia, and Tisna Harmawan. 2022. "The Effect of the Addition of Al2(SO4)3 on the Acidity Degree of Raw Water in the Regional Drinking Water Company (PDAM) Tirta Keumueneng Langsa." QUIMICA: Journal of Applied and Applied Chemistry 4(1):20–23. doi: 10.33059/jq.v4i1.4317.

[3]. Nisa, Nur Ihda Farikhatin, and Achmad Aminudin. 2019. "Effect of Increasing Coagulant Dose on Water Quality Parameters by Jartest Method." JRST (Journal of Science and Technology Research) 3(2):61. doi: 10.30595/jrst.v3i2.4500.

[4]. Noraida, Noraida. 2018. "Pattern of Addition of Alum Solution to Reduce the Turbidity of Martapura River Water." Journal of Health 9 (2). doi: https://doi.org/10.26630/jk.v9i2.853.

[5]. Nugroho, Bahtiar Aji, Siti Sundari Miswadi, and Nurwachid Budi Santosa. 2014. "The Use of Moringa Seed Powder to Lower Pb Levels, Turbidity and Color Intensity." IJCS - Indonesia Journal of Chemical Science 3(3):174–78.

[6]. Nurisni, Nendia, Etty Riani, and Syaiful Anwar. 2024. "Efficiency of Wastewater Pollutant Disposal from Dyeing Activities in the Textile Industry: A Case Study of PT ABC." Journal of Environmental Science 22(6):1615–25. doi: 10.14710/jil.22.6.1615-1625.

[7]. Permenkes RI, Number 907/MENKES/SK/VII/2002, July 29, 20202,

[8]. Rahardja, Istianto Budhi, Ahdiat Leksi Siregar, and Anna Windia Lestari Br Sihotang. 2020. "The Effect of Soda Ash Use on PH and Turbidity Parameters on External Water Treatment (Case Study at Palm Oil Mill (MSMEs) XYZ, North Kalimantan)." Journal of Technology 12(1):20–24.

[9]. Rianti, Lina, Maryana, and Aprianti. 2021. "Analysis of the Effectiveness of Mine Acid Water Neutralization Using Lime and Soda Ash from Coal Mine Pit Sludge Settling Ponds on a Laboratory Scale." Journal of Academic Patra Engineering 12(01):13–21. doi: 10.52506/jtpa.v12i01.121.

[10]. Veber, Elsa Verma, Nanang Yulistio, Qoriatul Fitriyah, Muhammad Wahyudi, Prihadi Eko, and 1. 2021. "Water Treatment." Journal of Applied Sciences, Electrical Engineering and Computer Technology 2(403):1–5.

DOI: https://doi.org/10.20961/equilibrium.v9i2.107185

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