بررسی اثرات برداشت آب رودخانه بهشت آباد بر کیفیت آب پایین دست با استفاده از مدل QUAL2Kw

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی آب دانشکده کشاورزی، دانشکده کشاورزی، دانشگاه صنعتی اصفهان، اصفهان، ایران

2 گروه مهندسی آب، دانشکده کشاورزی، دانشگاه صنعتی اصفهان، اصفهان، ایران

3 گروه مهندسی آب، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد، ایران

چکیده

رودخانه از مهمترین منابع برداشت آب جهت شرب وکشاورزی می‌باشد. از این رو ارزیابی و مدلسازی کیفیت آب رودخانه‌ها و بررسی تأثیرات کیفی آن بر زندگی انسان، جانداران و محیط زیست‌ غیر قابل انکار است. در این پژوهش، کیفیت آب رودخانه بهشت آباد با استفاده از مدل شبیه سازی QUAL2Kw، شبیه سازی شد. کیفیت آب این رودخانه در دو سرشاخه تشکیل دهنده آن، با طراحی دو سناریو جهت بهبود آن در پایین دست، تحلیل گردید. پارامتر‌های کیفی شبیه سازی شده (دما، EC، TS، DO، BOD، COD، pH، نیترات، اورتوفسفات، آمونیوم و کلیفرم مدفوعی) در دو سناریو با دبی متفاوت شبیه‌سازی شدند. نتایج نشان می دهد با جلوگیری از تخلیه آب رودخانه‌های بالادست (کیار و جونقان) به دلیل آلودگی زیاد و همچنین اضافه شدن آب چشمه باغ رستم در ادامه مسیر، کیفیت آب این رودخانه در پایین دست بهبود خواهد یافت. از جمله غلظت BOD از مقدار 32/7به 23/4 mg/L، غلظت پارامتر COD از 30/19 به mg/L12، غلظت پارامتر DO از 9/4 به mg/L 9/5  و غلظت پارامتر کلیفرم مدفوعی از 1500 به MPN/100 mL160 بهبود خواهد یافت.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of the effects of Beheshtabad River Water Abstraction on Downstream Water Quality

نویسندگان [English]

  • Reza Maghsoudi 1
  • Jahangir Abedi Koupai 2
  • Rasoul Mir Abbasi Najafabadi 3
1 Department of Water Engineering, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
2 Department of Water Engineering, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
3 Department of Water Engineering, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran
چکیده [English]

The river is one of the most important water sources for drinking and agriculture. Therefore, evaluating and modeling the water quality of rivers and examining its qualitative effects on human life, living things, and the environment is undeniable. In this study, the water quality of the Beheshtabad River was simulated using the QUAL2Kw simulation model. The water quality of this river in its two tributaries was analyzed by designing two scenarios to improve it downstream. The simulated qualitative parameters (temperature, Ec, TS, DO, BOD, COD, pH, nitrate, orthophosphate, ammonium, and fecal coliform) were simulated in two scenarios with different flow rates. The results show that by preventing the discharge of water from the upstream rivers (Kiar and Juneqan) due to high pollution and also the addition of water from Bagh-e-Rostam spring along the route, the water quality of this river will improve downstream. Including BOD concentration will improve from 7.32 to 4.23 mg /L, COD parameter concentration will improve from 19.30 to 12 mg/L, DO parameter concentration from 4.9 to 5.9 mg/L, and fecal coliform parameter concentration from 1500 to MPN/100 mL160.

کلیدواژه‌ها [English]

  • Beheshtabad River
  • water abstraction
  • Water quality
  • Pollution
  • QUAL2K
Abedi Kopaei, J., Talebi Jahromi, Kh, Bahrami, B., and Nasri, Z. (2008). Investigation of the possibility of water pollution of Zayandehrud river and some Felman wells with diazinon toxin, Journal of Soil and Water Sciences, Agricultural Sciences and Industries, 15(4), 1-16. (In Farsi)
Chapra, S.C., Pelletier, G.J. and Tao, H. (2012). A Modeling Framework for Simulating River and Stream Water Quality (Version 2.12). Environmental Engineering Dept. New York.
Chuersuwan, N., Nimrat, S. and Chuersuwan, S. (2013). Water Quality Management in Lamtakhong River. Journal of Pakistan Water Resources Management, 10, 22-41.
Egyptian National Water Research Center (2014) Mahmoudieh channel water quality study with QUAL2k model. Cairo.
Kannel, P, R., Lee, S., Lee, Y,S., Kannel, S,R. and Gia, J, P. (2007). Application of automated QUAL2Kw for water quality modeling and management in the Bagmati River, Journal of Ecological Modelling, 202, 503–517.
Khosravi Nia, H., Mir Khaleq, Z., Ahmadi, T., Golmaei, H. (2009) Quality Management of River Systems by Wasp7 Mathematical Model Case Study of Karun River, Iranian Watershed Management Association 5th National Conference on Watershed Management Science and Engineering . Tehran. (In Farsi)
Lai, Y.C., Tu, Y. T., Yang, C. P., Surampalli, R. Y. (2013). Water quality study of Dahan river in Taiwan. Journal of Environmental Protection, 9(3), 31-47.
Mohammadi, M. ghaderi,k.. and Ahmadi, M, M. (2018). Performance Evaluation of the Water Cycle Optimizing Algorithmfor Calibration of QUAL2Kw Model. Journal of Iranian Soil and Water Research, 50(4), 911-920.(In Farsi)
Mohammadi, S. and Kashefipour, M. (2015). Effect of Environmental Factors on Numerical Simulation of Coliform in Riverine Basins. Journal of Water and Sewerage, 25(2), 2-11.(In Farsi)
Pelletier, G. J., Chapra, S. C. and Tao, H. (2006) QUAL2Kw- A framework for modeling water quality in streams and rivers        using a genetic algorithm for calibration, Journal of Environmental Modeling & Software, 21, 419-425
Rafiee, M., Akhond Ali, A. M., Moazed, H. and Steve, W. (2017). A Case Study of Water Quality Modeling of the Gargar River. Journal of Iran Water Sciences. 35, 25-36.
Razdar, B. and Ghavidel, A. (2009). Study of water quality in Anzali wetland using WQI quality index, the seventh collection of articles of the National Conference on Sustainable Development Models in Water Management, Mashhad, 23(5), 467 -470.
Sakizadeh, M., and Khani Havizavi, A. (2017). Investigation of the trend of qualitative changes and factors affecting the water
quality of Karun River in Ahvaz, Journal of Environment and Water Engineering, 2(2), 13- 22. (In Farsi)
Salehian, S. and Rahmani Fazli, A. (2018). Investigation of  environmental consequences of water resources instability in Zayandehrood river basin. Journal of natural Geography Research, 50(2), 391-406.(In Farsi)
Sener, S., Sener, E. and Davraz, ‏A. (2017). Evaluation of water quality using water quality index method and GIS in Aksu River (Turkey). Journal of Water Management, 584, 131-144.
Shayannejad, M., Taheri, H., and Barati, Kh. (2015). Introduction of basic equations of QUAL2K model and practical guide,
Water and Sustainable Development of Ferdowsi University of Mashhad.
Turner, D,. Pelletier, G. J. and Kasper, B. (2009). Disosolved Oxygen and pH Modeling of a Periphyton Dominated, Nutrient Enriched River. Journal of Soil and Water Sciences, 135, 86-99.
Yuceer, M. and Coskun, M. (2016). A Modeling Water Quality In Rivers: A Case Study Of Beylerderesi River In Turkey, Journal of the Environment.4(1), 383-395.