Study on the Optimum Flushing Volume of the Sewer System in South Tangerang City

Maudi Larasati Marsudi, T. Tazkiaturrizki, W. Winarni


Aims: This planning aims to obtain the optimum flush volume on the design of sewerage in South Tangerang City. Methodology and results: Factors affecting this flushing are the length of pipelines, the service area, and topographic conditions. The sewer drain that needs flushing is Line 1–WWTP since the minimum velocity is not eligible due to its relatively low average topographic slope. The flushing is required particularly for the Section 1–2. Hence, two alternatives were devised by dividing the Population Equivalent (PE) in Section 1–2 into three segments. Those alternatives were differentiated by the PE—20%, 5%, and 75% for Alternative 1; whereas 10%, 15%, and 75% for Alternative 2. Alternative 1 requires flushing on Section 1–1.1 since it has a dmin of 7 cm and vmin of 0.2585 m/s, yielding a flush volume of 3.94 m3 (0.0193 m3/s). Section 1.1–1.2 still needs flushing because this channel has a vmin of 0.4281 m/s and a qualified dmin of 15 cm, generating a flush volume of 7.89 m3 (0.2113 m3/s). Flushing is not necessary for Section 1.2–2 due to its sufficient dmin of 63 cm and vmin of 0.88 m/s. Alternative 2 requires flushing on Section 1–1.1 since it has a dmin of 7 cm and a vmin of 0.2585 m/s, resulting in a flush volume of 2.63 m3 (0.0193 m3/s). Section 1.1–1.2 still requires flushing on account of its vmin of 0.3877 m/s and the yielded flush volume of 18.4 m3 (0.2625 m3/s), though its dmin of 13 cm complies with the standard. Section 1.2–2 does not need flushing as it already has a dmin of 63 cm and a vmin of 0.88 m/s. The total flush volumes for Alternative 1 and Alternative 2 are 11.83 m3 and 21.04 m3, respectively. Conclusion, significance, and impact of the study: The total flush volume for Alternative 1 is 11.83 m3, while Alternative 2 is 21.04 m3. Thus, the optimum design having the least flush volume is Alternative 1.


Sewerage; Wastewater; Flushing; South Tangerang

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Arsyad, M. 2016. Perencanaan Sistem Perpipaan Air Limbah Kawasan Pemukiman Penduduk. Jurnal Ilmiah Media Engineering, 6(1):406–412.

Calvin, K. 2009. Flushing Periode of Sewer System. Journal of Environmental Engineering, 234(9):124–132.

Howard, G. 2009. Design of Manhole Placement. Journal of Civil Engineering, 342:153–162.

Ilmi, N. 2009. Perencanaan Debit Penggelontoran dalam Sistem Air Limbah. Jurnal Teknik Sipil, 211(2):243–250.

Kurniawan, A., and Dewi, N. A. 2015. Planning of Domestic Wastewater Sewerage in Bogor City Using Rainwater for Flushing Flowrate. Jurnal Manusia dan Lingkungan, 22(1):39–51.

G. M. Fair, J. C. Geyer, D. A. Okun. Water and Wastewater Engineering Volume 1: Water Supply and Wastewater Removal, John Willey and Sons, Inc, New York,1966, p.14–10.

M. M. Hardjosuprapto. Penyaluran Air Buangan, Vol. 2, 2000, p.117.

Pisano, W. C. 2003. Automated Sewer and Drainage Flushing System in Cambridge, Massachusetts. Journal of Hydraulic Engineering, 260–266.

Thomas, L. 2010. Planning of Hydraulic Piping System. Journal of Civil Engineering, 37:165–173.

Watson, J. 2010. Calculation of Wastewater Discharge on Urban Sewer. Journal of Civil Engineering, 231(3):342–352.



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