بررسی نحوه حرکت آلاینده‌های تجزیه پذیر و تجزیه ناپذیر در رسوبات مجاور رودخانه جاجرود با استفاده از انجام آزمایش عملی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، گروه مهندسی محیط زیست، محیط زیست و منابع طبیعی، دانشگاه آزاد اسلامی واحد علوم تحقیقات، تهران، ایران

2 استاد، گروه مهندسی محیط زیست، محیط زیست و منابع طبیعی، دانشگاه آزاد اسلامی واحد علوم تحقیقات، تهران، ایران

3 دانشیار، گروه مهندسی محیط زیست، محیط زیست و منابع طبیعی، دانشگاه آزاد اسلامی واحد علوم تحقیقات، تهران، ایران

چکیده

در این پژوهش با انجام آزمایش در آبرفت مجاور رودخانه به بررسی میزان تأثیر انواع آلاینده‌های تجزیه‌پذیر و تجزیه‌ناپذیر بر آلودگی خاک اطراف رودخانه و همچنین آلودگی آب رودخانه تحت تأثیر آن پرداخته شد. بخشی از رودخانه جاجرود حدفاصل مخزن سد لتیان و ماملو به‌عنوان محل پژوهش برگزیده و چاهک‌های موردنظر در فواصل 200، 100،  m50 و در مجاورت رودخانه حفر شدند. از ردیاب ردامین به‌عنوان آلاینده تجزیه‌ناپذیر و از شیر خشک برای افزایش پارامتر بار آلی (پارامتر COD) به‌عنوان آلاینده تجزیه‌پذیر استفاده شده است. آزمایش اورانین از طریق منحنی سنجه به کمک دستگاه اسپکتروفلوئورسنس و اندازه‌گیری COD از طریق دستگاه DR6000 مطابق استاندارد ISO 15705 صورت پذیرفت. همچنین برای بررسی دقت نتایج از مدل عددی بر اساس روش تفاضل محدود و نرم‌افزار تجاری GeoStudio 2007 ماژول CTRAN مقایسه صورت پذیرفت. نتایج به‌دست‌آمده نشان داد زمان پیمایش از اولین چاهک تا چهارمین چاهک، برای هر دو نوع آلاینده حدود  day 14 بود و نسبت غلظت آلودگی‌ها در لحظه اول نسبت به لحظه آخر برای آلاینده تجزیه‌ناپذیر حدود 4/0 و برای آلاینده تجزیه‌پذیر حدود 55/0 بود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigation of the Movement of Biodegradable and Non-Biodegradable Pollutants in Sediments Adjacent to the Jajroud River by Practical Experiment

نویسندگان [English]

  • seyyedmohammadamin Banaei 1
  • Amirhossein Javid 2
  • Amirhessam Hassani 3
1 PhD Scholar, Department of Environmental Engineering, Faculty of Environment and Natural Resources, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 Professor, Department of Environmental Engineering, Faculty of Environment and Natural Resources, Science and Research Branch, Islamic Azad University, Tehran, Iran
3 Assoc. Professor, Department of Environmental Engineering, Faculty of Environment and Natural Resources, Science and Research Branch, Islamic Azad University, Tehran, Iran
چکیده [English]

In this study, by conducting experiments in the alluvium adjacent to the river, the effect of various biodegradable and non-biodegradable pollutants was investigated on soil pollution around the river and also river water pollution under its influence. A part of Jajroud River, between Latian and Mamlu Dam reservoirs, was selected as the research site and the wells were drilled at distances of 200, 100, and 50 m and adjacent to the river. Rhodanine tracer was used as a non-degradable pollutant and powdered milk was used as a degradable pollutant to increase the organic charge parameter (COD parameter). Uranine test was performed by measuring curve using spectrofluorescence device and COD was measured by DR6000 device according to ISO 15705 standard. The CTRAN module was also compared to evaluate the accuracy of the results from the numerical model based on the finite difference method and the commercial software GeoStudio 2007. The results showed that the travel time from the first well to the fourth well was about 14 days for both types of pollutants and the ratio of pollution concentrations in the first moment to the last moment was about 0.4 for non-degradable pollutants and about 0.55 for degradable pollutants.

کلیدواژه‌ها [English]

  • Degradable pollution
  • Non-degradable Pollution
  • Porous Saturated Medium
  • Qualitative Boundary
  • River
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دوره 8، شماره 1
فروردین 1401
صفحه 177-191
  • تاریخ دریافت: 20 اردیبهشت 1400
  • تاریخ بازنگری: 19 تیر 1400
  • تاریخ پذیرش: 19 تیر 1400
  • تاریخ اولین انتشار: 07 شهریور 1400