IJEP 42(14): 1737-1741 : Vol. 42 Issue. 14 (Conference 2022)
Diana Irvindiaty Hendrawan*, Melati Ferianita Fachrul and Astri Rinanti
Universitas Trisakti, Department of Environmental Engineering, Faculty of Landscape Architecture and Environmental Technology, Jakarta 11440, Indonesia
Abstract
Depok city has many shallow lakes as a catchment area. Citayam, Pladen and Tipar lakes in Depok have been degraded. It is necessary to study pollutant load capacity in an attempt to control pollution and damage recovery. This study was conducted during 2019-2020 in 3 lakes in Depok city. Citayam lake is 6.2 ha, Pladen lake is 1.27 ha and Tipar lake is 7.2 ha wide. We calculated water quality status using the pollution index. Determination of water pollution load capacity was based on Ministry of Environment and Forestry Regulation no. 28 (2009) concerning the carrying capacity of lake and/or reservoir water pollutants. Pollution index of Citayam lake is 10.54, Pladen lake is 12.46 and Tipar lake is 5.26. The water quality status of lakes lie in moderate and heavily polluted region. The pollutant load capacity of Citayam lake is 8,136 kg BOD/year, while the existing conditions show 42,580 kg BOD/year. The load capacity of Pladen lake is 1,041 kg BOD/year while the existing condition show 10,268 kg BOD/year. The pollutant load capacity of Tipar lake is 1,703 kg BOD/year while the existing condition show 3,917 kg BOD/year. The pollutant load entering the lake exceeds the entire capacity.
Keywords
Shallow lake, Water pollution, Water quality status, Pollution load capacity
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