نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد، گروه آلودگی های محیط زیست، دانشکده کشاورزی، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

2 استادیار، گروه علوم و مهندسی آب، دانشکده کشاورزی، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

3 استادیار، گروه آلودگی های محیط زیست، دانشکده کشاورزی، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

چکیده

در این تحقیق به‌منظور بررسی وضعیت کیفی بخشی از رودخانه سیکان در استان ایلام تعداد پنج ایستگاه نمونه‌برداری بر روی این رودخانه انتخاب و نمونه‌برداری در دو فصل پاییز و زمستان 1394 انجام شد. پهنه‌بندی یا طبقه‌بندی کیفی آب این رودخانه بر اساس شاخص‌های NSFWQI و BCWQI انجام شد. نتایج نشان­داد  که در شاخص NSFWQI، سرچشمه و بالادست رودخانه در وضعیت کیفی متوسط قرار داشتند. سایر ایستگاه‌ها نیز در دو فصل پاییز و زمستان وضعیت بد را نشان­دادند. همچنین شاخص BCWQI ایستگاه 1 و 2 در پاییز، وضعیت کیفی خوب و سایر ایستگاه‌ها در فصل تابستان و تمامی ایستگاه‌ها در زمستان در وضعیت مناسب قرار داشتند. این نتایج نشان از اعتبار بیشتر روش NSFWQI نسبت به BCWQI دارد. زیرا در برنامه نرم‌افزار NSFWQI، شاخص‌های اندازه‌گیری شده می‌توانند با توجه به محدوده وزنی خود، اثر همپوشانی بر سایر پارامترها داشته و لذا شاخص کل بدست ­آمده از اعتبار بالاتری برخوردار است. نتایج همچنین نشان داد که آب این رودخانه در دو فصل مورد بررسی برای مصارف کشاورزی و آبزیان مناسب است. از این‌رو نتایج این شاخص امکان تصمیم‌گیری در خصوص پایش و کنترل منابع آلوده ‌کننده آب رودخانه و استفاده مؤثر از آن­ را جهت مصارف مختلف برای مسئولین ذی‌ربط فراهم می‌آورد. 

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Assessing the Water Quality of Seikan River using NSFWQI and BCWQI Indicators

نویسندگان [English]

  • Ali Lotfi 1
  • Narges Zohrabi 2
  • Maryam Mmohammadiroozbahani 3

1 M.Sc., Department of Science and Water Engineering, Faculty of Agriculture, Ahvaz Branch, Islamic Azad University, Ahwaz, Iran

2 Assist. Professor, Department of Science and Water Engineering, Faculty of Agriculture, Ahvaz Branch, Islamic Azad University, Ahwaz, Iran

3 M. Sc in Department of Environmental Pollution, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran

چکیده [English]

In this research, five sampling stations were selected on the Seikan River in order to investigate the water quality of the river and sampling was carried out during autumn and winter 2015. Zoning or classification of water quality of the river was determined based on BCWQI was NSFWQI indicators. Qualitative indicators showed the NSFWQI index was within average condition at the source and upstream stations; other stations showed bad situation in fall and winter. In the case of BCWQI index, the stations 1 and 2 had good conditions in fall, whereas, the other stations in this season and the whole stations were in suitable conditions in winter. These results indicated that NSFWQI has better validity rather than BCWQI because in the software program for NSFWQI, measured indicators can overlap other parameters based on their weight limits. Hence, the index resulted has higher validity. Therefore, the results of this indicator provide decision making for monitoring and controlling the polluting sources of the river water and its proper application in different water consumption for the authorities. The results showed that the river's water is appropriate for agriculture and aquaculture in both seasons.

کلیدواژه‌ها [English]

  • Seikan River
  • NSFWQI
  • BCWQI
  • Water Quality
BCWQI. (1996). Ministry of Environment, Lands, and Parks: The Water Quality Section. British Columbia Water Quality Status Report. Victoria, BC. 179p.
 
Bollinger J. E., Steinberg L. J., Harrison M. J., Crews J. P., Englande A. J. and VelascoGonza´lez C. (1999). Comparative analysis of nutrient data in the lower Mississippi River. Water Res., 33, 2627–2632.
 
Ebrahimpour S., Mohammadzadeh H. and Mohammadi A. (2011). Assessing the water quality of Zarivar wetland lake and its zoning using qualitative indices (NSFWQI) and (OWQI) and the use of geographic information system. Fourth Iranian Water Resources Management Conference. Amirkabir University of Technology [In Persian].
 
Gupta N., Pandey P. and Hussain J. (2017). Effect of physicochemical and biological parameters on the quality of river water of Narmada, Madhya Pradesh, India. Water Sci., 31(1), 11-23.
 
Halajean L., Afkhami M. and Nabavi M. (2009). Investigating the water quality of the Shawor River using the WQI index and providing management solutions to improve its quality. Master's Dissertation. Life science. Islamic Azad University Science and research Branch [In Persian].
 
Jeyaraj M., Nirmaladevi  G. and Magudeswaran  P.N. (2014). Assessment of water quality index of Sulur Pond , CombatoreTamilnadu India.  J Emer. Tren. Scie. Technol., 1(7), 2837.
 
Khorbane S., Gohari S. and Banedah H. (2013). Determination of water quality indices for choosing the most suitable indicator in unity dam. Eleventh General Irrigation Seminar and Evaporation Reduction. Kerman [In Persian].
 
Langhammer J., Hartvich F., Mattas D., Rödlová S. and Zbořil A. (2012). The variability of surface water quality indicators in relation to watercourse typology Czech Republic. Environ. Monit. Assess., 184(6), 3983–3999.
 
Melendez G., Quintero C. and Ramirez A. (2013). Application of water indices NSFWQI, DSWQI and BMWP to AyuraCreek, Antioquia Colombia. Journal of Gestion and Ambiente., 16(1), 97-108.
 
Miroofi S. and Meghlouli Bayat R. (2009). Investigating the chemical quality of Karaj river water. 5th National Conference on Watershed Manage. Sciences and Eng. (Sustainable Manage. of Natural Disasters) [In Persian].
 
Misaghi F., Delgosha F., Razzaghmanesh M. and Myers B. (2017). Introducing a water quality index for assessing water for irrigation purposes: A case study of the Ghezel Ozan River. Sci. Total Environ., 589(1), 107-116. 
 
Moftah Haghimi M. (2010). Water quality zoning using different quality indices (Case study: Toluq River). J. Soil Water Conserv. Res., 2, 10-16. [In Persian].
 
Samadi M., Resident Rahmani A. and Terabzadeh H. (2009). The qualitative water distribution in the Valley of Morad Beyk Hamadan River based on the NSFWQI index and the use of the Geographic Information System (GIS). Sci. J. Hamedan Uni. Med. Sci. Health Serv., 16(3), 25-32 [In Persian].
 
Sheikhestani N. (2001). Determination of surface water quality index and its application in qualitative vulnerability assessment and qualitative zoning of rivers. Master's Dissertation. Faculty of Civil Eng. Iran University of Science and Technology. [In Persian]
 
Shokuhi R., Hosinzadeh E., Roshanaei G., Alipour M. and Hoseinzadeh S. (2012). Evaluation of Aydughmush Dam Reservoir Water Quality by National Sanitation Foundation Water Quality Index (NSF-WQI) and Water Quality Parameter Changes. Iranian J. Health Environ., 4(4), 439-450 [In Persian].
 
Water Research Center. (2005). Calculating NSF Water Quality Index. Available at: www.waterresearch.net/index.php/watertreat ment/water-monitoring/monitoring-thequality-of-surfacewaters.
 
WHO. (2009). Standard Method for Examination of water and waste water. 21st Ed. World Health Organization, Guidelines for drinking water quality 3rd edition. 
 
Yadollahi S., Shapouri Kamali A. and YaleMe'ili Sari A. (2010). Investigating the Possibility of the Impact of the Sovereign Communities of the Sangal River on Determining the Quality of Water in the Literacy Region of the Region. J. Marine Bio., Ahwaz University [In Persian].