Abstract
A study of the Osumi River possesses great importance because of its strategic geographical position, and for the fact that high quality water can affect aquatic flora and fauna. Determinant factors that influence quality river water quality include climatic conditions, such as temperature variation, amount of rainfall and erosion of the soil. This investigation represents the seasonal variation of different physical, chemical and bacteriological parameters, consequently to estimate the pollution status of Osumi River depending on weather conditions during the dry and rainy season. This study was carried out for a period of two years from January 2012 to December 2013. Five sampling stations were established during this investigation. The collected samples were divided into two groups. Each group depended on the weather conditions during the study period: October 2012- February 2013, during cool-cold weather (the wet season); March 2012- September 2013, during warm-hot weather (the dry season).The maximum pH value 9.04 was observed as a result of the discharge of tannery wastewaters into river water of this area. COD (Chemical Oxygen Demand) values ranged from 7.97 to 51.63 mg/L O2 during the dry season and from 13.4 to 171.37 mg/L O2 during the wet season. Chloride levels ranged from 17.74 to 258.27mg/L during the dry season and from 21.27 to 685.83 mg/L during the wet season. TSS values exceeded many times the limit of the EU Directive- 50mg/L for the quality of fresh waters for aquatic life. Seasonal values of physical, chemical and bacteriological parameters of Osumi River varied according to sampling sites depending on the quantity and activity of the source of pollution into the river water. Variation according to season did not adhered to any specific trends.
Highlights
Water resources such as rivers, lakes and springs are of a great importance for the sustenance of all life
The pH values in other stations during dry and wet seasons are shown in Fig.[4], which were within norms of the EU Directive “Quality of fresh waters supporting fish life”, (Miho et al, 2005)
Nitrate values during the dry and wet seasons were within permissible limits set by the USEPA, (Ugwu, 2012)
Summary
Water resources such as rivers, lakes and springs are of a great importance for the sustenance of all life. The diversity of organisms that may survive in any body of water is limited to the fluctuating conditions prevailing within it, Alagoa et al (2012) This is subject to the varying levels of the physical and chemical parameters of the river water such as temperature, pH, Chemical Oxygen Demand (COD), total suspended solids, total dissolved solids, ammonium, nitrate, phosphate, chloride and bacteriological parameters such as coliform bacteria, Escherichia Coli and Streptococcus Faecalis. Determining factors that influence river water quality include climate conditions, such as temperature variation, amount of rainfall and soil erosion, which appears to be a critical and prevalent phenomenon within Albanian aquatic systems This investigation illustrates the seasonal variation of different physical, chemical and bacteriological parameters. One of the objectives of this study was to complete data sets related to the river from the authors previous study
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
