Objective: Indonesian State Oil Company processes crude oil into fuel oil, non-fuel fuel and petrochemical, this activity produces waste that allows pollution of the Donan river. herefore, this study aims to analyze the quality of Donan streams based on water chemical - physical quality, and the plankton and benthos diversity conditions, due to the impact of waste discharged from the installation of wastewater treatment units from cilacap state oil companies.
Methodology: This research was conducted by analyzing water samples with Atomic Absorption Spectrophotometer method. Water sampling is done at point 2 sampling points is at sampling point A = holding basin output 39 and B = holding basin output 66 - 49.
Results: Based onBiological Oxygen Demand (ppm ) analysis between 5.5 ppm - 7.2 ppm.Chemical Oxygen Demand concentration (ppm) between 33.6 ppm - 33.7 ppm. While the concentration of Dissolved Oxygen (ppm) between 6.0 ppm - 5.9 ppm. The results of heavy metal chromium analysis with concentrations between 0.04 ppm - 0.05 ppm. Free chlorine concentration with concentration of 0.04 ppm - 0.05 ppm. While the concentration of H2S was 0.2 ppm . and the fluoride concentration was 0.88 ppm - 1.01 ppm. Based on the quality standards stipulated by Regulation of the Minister of Environment No. 19 of 2010 and Regional Regulations of Central Java, No. 5 of 2012 shows that the Donan river on the verge of polluted. Plankton analysis was found as the dominant species of Coscinodiscus sp and Nitzschia sp which is a bio-indicator of pollutant. The waters are contaminated lightly.
Author :
Slamet Isworo Department of Health, Dian Nuswantoro University, Semarang, Indonesia.
Poerna Sri Oetari and N. A. Indah Mitra Adi Pranata Company, Environmental Impact Assessment (EIA) Consultants,Semarang, Indonesia.
Poerna Sri Oetari Graduate School of Environmental Science, Diponegoro University, Semarang, Indonesia.
Asian Journal of Biology
4 (3): 1-10, 2017; Article no.AJOB.36619
ISSN: 2456-7124