ارزیابی حساسیت شاخص‌های کیفیت آب بنیاد ملی بهداشت (NSFWQI) و شاخص کیفیت آب سطحی ایران (IRWQIsc) بر کیفیت آب رودخانه نکارود

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی محیط زیست، دانشکده مهندسی عمران، آب و محیط زیست، دانشگاه شهید بهشتی، تهران، ایران.

2 گروه مهندسی محیط زیست، دانشکده مهندسی عمران،آب و محیط زیست، دانشگاه شهید بهشتی، تهران، ایران.

3 گروه مهندسی آب، فاضلاب و محیط زیست، دانشکده مهندسی عمران،آب و محیط زیست، دانشگاه شهید بهشتی، تهران، ایران.

10.22059/jwim.2023.355941.1059

چکیده

در سال‌های اخیر افزایش غیراصولی فعالیت‌های کشاورزی در مسیر رودخانه‌ها و تخلیه فاضلاب‌های خانگی، پساب‌های کشاورزی و صنعتی باعث کاهش شدید کیفیت آب‌های سطحی شده است. منابع آبی آلوده و یا در معرض آلودگی می‌توانند بر روی تمامی چرخه حیات اثر منفی بگذارند. در این پژوهش روند تغییرات کیفیت آب رودخانه نکارود از سرچشمه تا محل اتصال به دریای خزر موردبررسی قرارگرفته است. نمونه‌برداری‌ها در فصول مختلف سال 1400 و در سه ایستگاه در مسیر رودخانه انجام و مورد آنالیز قرار گرفت و مقادیر با استانداردهای IRWQIsc و  NSFWQIموردبررسی قرار گرفت. نتایج نشان داد براساس شاخص IRWQIsc  رودخانه در رده کیفی نسبتاً خوب و براساس شاخص NSFWQI در رده کیفی متوسط قرار دارد، اما در ایستگاه (3) براساس هر دو شاخص رودخانه در رده کیفی نسبتاً بد تا بد قرار دارد. کیفیت کلی آب از سرچشمه به سمت خروجی روندی کاهشی را دنبال می‌کند و کاهش آن در فصول گرم‌تر نسبت به فصول سردتر است بیش‌ترین کاهش کیفیت در فصل بهار اتفاق می‌افتد که به‌دلیل افرایش فعالیت‌های کشاورزی در حوضه رودخانه است و نیز کم‌ترین میزان در فصول سرد به‌ویژه زمستان شکل می‌گیرد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Sensitivity assessment of the National Sanitation Foundation Water Quality Index (NSFWQI) and IRan Water Quality Index for Surface Water Resources (IRWQIsc) on the water quality of the Neka River

نویسندگان [English]

  • Mohammad Mazlomi Mochani 1
  • Ali Hatami 2
  • Ali Moridi 2
  • Reza Khalili 3
1 Department of Environmental Engineering, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran,
2 Department of Environmental Engineering, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran.
3 Department of Water, Wastewater and Environmental Engineering, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran.
چکیده [English]

In recent years, the improper increase of agricultural activities along riverbanks and discharge of household, agricultural, and industrial wastewater into them has led to a significant reduction in the quality of surface water. Polluted or contaminated water sources can have a negative impact on the entire life cycle. In this study, the trend of changes in the water quality of Neka River, from its source to its connection to the Caspian Sea, has been investigated. Samples were collected at three different points along the river during different seasons in 2021 and were analyzed using IRWQIsc and NSFWQI standards. Results showed that, based on the IRWQIsc index, the river is relatively good quality, and according to the NSFWQI index, it is of moderate quality, but at station 3, the river's quality is relatively poor using both indexes. The overall water quality follows a downward trend from the source to the outlet, with greater declines in quality during warmer seasons due to increased agricultural activities in the river basin, with the largest decrease in quality observed in spring and the smallest decrease in quality in the colder seasons, especially in winter.

کلیدواژه‌ها [English]

  • IRWQIsc index
  • Nekarud River
  • NSFWQI index
  • Qualitative assessment

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مدیریت آب و آبیاری
دوره 13، شماره 3
مهر 1402
صفحه 581-592

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