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Evaluation of Water Quality of the Beshar River

Authors: Fardin Boustani, Mohammah Hosein Hojati, Masoud Hashemi

Abstract:

The Beshar River is one aquatic ecosystem, which is located next to the city of Yasuj in southern Iran. The Beshar river has been contaminated by industrial factories such as effluent of sugar factory, agricultural and other activities in this region such as, Imam Sajjad hospital, drainage from agricultural farms, Yasuj urban surface runoff and effluent of wastewater treatment plants ,specially Yasuj waste water treatment plant. In order to evaluate the effects of these pollutants on the quality of the Beshar river, five monitoring stations were selected along its course. The first station is located upstream of Yasuj near the Dehnow village; stations 2 to 4 are located east, south and west of city; and the 5th station is located downstream of Yasuj. Several water quality parameters were sampled. These include pH, dissolved oxygen, biological oxygen demand (BOD), temperature, conductivity, turbidity, total dissolved solids and discharge or flow measurements. Water samples from the five stations were collected and analyzed to determine the following physicochemical parameters: EC, pH, T.D.S, T.H, No2, DO, BOD5, COD during 2008 to 2010. The study shows that the BOD5 value of station 1 is at a minimum (1.7 ppm) and increases downstream from stations 2 to 4 to a maximum (11.6 ppm), and then decreases at station 5. The DO values of station 1 is a maximum (8.45 ppm), decreases downstream to stations 2 - 4 which are at a minimum (3.1 ppm), before increasing at station 5. The amount of BOD and TDS are highest at the 4th station and the amount of DO is lowest at this station, marking the 4th station as more highly polluted than the other stations .This study shows average amount of the water quality parameters in first year of sampling (2008) have had a better quality relation to third year in 2010 because of recent drought in this region and pollutant increasing .As the Beshar river path after 5th station goes through the mountain area with more slope and flow velocity ,so the physicochemical parameters improve at the 5th station due to pollutant degradation and dilution. Finally the point and nonpoint pollutant sources of Beshar river were determined and compared to the monitoring results.

Keywords: Beshar river, physicochemical parameter, waterpollution, water quality, Yasuj

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1334013

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References:


[1] Boustani,Fardin and Hojati, Mohammad Hossein, a survey on pollution and water quality of the Beshar River, International Conference on Sustainable Water Resources Management ,Paris, France, 2010
[2] APHA., "Standard Methods for the Examination of Water and Wastewater,"18th ed., American Public Health Association, Washington, DC. Bulut, V.N., 1998
[3] Chau, K.W., Chuntian, C. & Li, C.W , "Knowledge management system on flow and water quality modelin,"g Journal of Expert Systems with Applications, 22(4) :321-330, 2002
[4] Sohngen, B. and Yeh, C.Y. "Total Maximum Daily Loads ," (TMDLs).http://ohioline.osu.edu/ae-fact/0007.html, 1999
[5] United States. " Environmental Protection Agency , Quality Criteria for Water ," EPA 440/5-86-001,1986
[6] Diersing, Nancy "Water Quality: Frequently Asked Questions ,"PDA. NOAA,2009
[7] United States Environmental Protection Agency (EPA) , Washington, DC. "Water Quality Standards Review and Revision,",2006