Mathematical Model of the Water Quality in Kalibaru Watershed

Hariono, Budi and Wijaya, Rizza and Kurnianto, M F and Wibowo, M J and Anwar, Saiful (2018) Mathematical Model of the Water Quality in Kalibaru Watershed. IOP Conference Series: Earth and Environmental Science. pp. 1-11. ISSN 1755-1315

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Abstract

The Kalibaru Watershed is one of the watersheds which needs to be concerned because it is suspected to have decreased water quality, due to the high activity of the households, industry, livestock, and agriculture. This condition implies that the water quality as the embodiment of the environmental capacity of Kalibaru Watershed needs to be studied, so that it can be known how far it benefits the lives of the society.The aim of the research were to determine the water quality related to physical properties (pH), chemical properties (BOD, PO4P, NO2N) and microbiological properties (Fecal coli) from observation stations upstream, central and downstream of Kalibaru River watershed. The research approach framework was carried out by: (1) data collection to describe water quality problems in the Kalibaru watershed from the Sampean Baru River Area Water Resources Management Center in Bondowoso. The data such as the results of laboratory analysis of physical, chemical and microbiological properties in 3 (three) observation points of the Kalibaru watershed. The results of the analysis were processed using the regression method became a model for decrease in water quality as seen from the 3 parameters above and compared with the Republic of Indonesia Government Regulation No. 82 of 2001. Data analysis of the above parameters from January to December 2017 with the Polynomial equation of order 6. Research parameters include pH, BOD, PO4N, NO2N with MAXR method. The parameters of pH observation stasion in upstream, middle and downstream get result R Max respectively are 0,76; 0,60; 0,57. BOD parameter values respectively are 0,59: 0,42: 0,18. PO4P paramater values respectively are 0,52; 0,47; 0,48. NO2N paramater values respectively are 0,66; 0,71; 0,77. Fecal Coli parameter values respectively are 0,57; 0,85; 0,87.

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