پایش کیفی و توان خودپالایی رودخانه سیروان در بازه آزاد دوآب

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه علوم و مهندسی آب، دانشکده فنی و مهندسی، دانشگاه اسلامی، سنندج، ایران.

2 گروه مهندسی و مدیریت آب، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران، ایران.

10.22059/jwim.2024.364568.1100

چکیده

با توجه به افزایش روزافزون بار آلودگی حاصل از فاضلاب‌های خانگی شهری و روستایی و فعالیت‌های صنعتی و کشاورزی برای منابع آبی و به‌ویژه منابع آب سطحی و از طرفی عدم اعمال مدیریت و به‌کارگیری روش‌های تصفیه این آلودگی‌ها، آینده منابع آبی کشور با بحران‌های زیست‌محیطی جبران‌ناپذیری مواجه خواهد شد که بررسی وضعیت منابع آبی جهت مشخص‌نمودن شدت بحران کنونی و هشدار نسبت به آینده، بسیار دارای اهمیت و تأثیرگذار می‌باشد. در این پژوهش وضعیت کیفی و توان خودپالایی رودخانه سیروان در بازه آزاد دوآب تحت تأثیر آلاینده‌های ورودی در طول مسیر موردبررسی قرارگرفته است که برای انجام این پژوهش، با توجه به شرایط و وضعیت موجود، تعداد هفت پارامتر کیفی فیزیکی و شیمیایی آب شامل اکسیژن محلول، آمونیاک، نیترات، فسفات، کدورت، pH و دما در 10 ایستگاه انتخابی در طول مسیر موردمطالعه به طول حدود 45 کیلومتر، در سه نوبت از سال (زمستان، بهار و تابستان)، با استفاده از روش‌های استاندارد مورد اندازه‌گیری و سپس تجزیه و تحلیل قرار گرفت. هم‌چنین با استفاده از شاخص کیفیت آب IRWQI، وضعیت کیفی رودخانه آزاد دوآب ارزیابی گردید که برابر نتایج به‌دست‌آمده، غالب ایستگاه‌های نمونه‌برداری به‌دلیل آبدهی مناسب، مسیر پرپیچ و خم و تهویه مناسب توسط باد، از آلودگی کمی برخوردار بوده و از لحاظ کیفی در حد نسبتاً خوبی قرار گرفته است، تنها در برخی نقاط از جمله محل ایستگاه شماره 9 به‌دلیل ورود فاضلاب شهر سروآباد به داخل رودخانه، وضعیت کیفی آب کاهش یافته که پس از آن و پیمایش مسیر، دوباره به سمت وضعیت مطلوب گرایش می‌یابد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Quality monitoring and self-purification capacity of Sirvan river in Azad Doab interval

نویسندگان [English]

  • Shaho Rostami 1
  • Sobhan Rostami 2
  • Vafa Rezaei 1
1 Department of Water Science and Engineering, Faculty of Technology and Engineering, Islamic University, Sanandaj, Iran.
2 Department of Water Engineering and Management, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
چکیده [English]

Due to the increasing pollution from domestic wastewater in urban and rural areas, as well as industrial and agricultural activities, the future of the country's water resources, especially surface water resources, will face inevitable environmental crises. The assessment of the water resources situation to determine the severity of the current crisis and warn about the future is very important and influential. In this research, the quality status and self-purification capacity of the Sirvan River in the Azad Doab interval under the influence of input pollutants along the study area have been investigated. For this research, considering the current conditions and situation, 7 physicochemical water quality parameters, including dissolved oxygen, ammonia, nitrate, phosphate, turbidity, pH, and temperature, were measured and analyzed at 10 selected stations along the approximately 45-kilometer study area in three seasons (winter, spring, and summer) using standard methods. Furthermore, the water quality status of the free water interval was evaluated using the IRWQI water quality index. According to the results obtained, most of the sampling stations had low pollution levels due to adequate water supply, winding path, and appropriate ventilation by wind, and they were qualitatively relatively good. Only in some areas, such as the location of station number 9, the water quality has decreased due to the discharge of wastewater from the city of Sarvabad into the river, but after that point and along the route, it gradually improves towards the desired condition.

کلیدواژه‌ها [English]

  • Pollutant sources
  • Qualitative monitoring
  • Self-purification
  • Surface water quality index of Iran

مراجع

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مدیریت آب و آبیاری
دوره 14، شماره 2
مهر 1403
صفحه 509-529

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