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
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