تفکیک هاله‌‌های آلودگی‌ نفتی آب زیرزمینی در محدوده صنعتی جنوب تهران

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، گروه زمین شناسی محیطی، پژوهشکده علوم پایه کاربردی جهاد دانشگاهی، تهران، ایران

2 استادیار، گروه زمین‌شناسی محیطی، پژوهشکده علوم پایه کاربردی جهاد دانشگاهی، تهران، ایران

3 کارشناس ارشد مهندسی محیط زیست، شرکت پالایش نفت تهران

4 کارشناس ارشد، گروه زمین شناسی محیطی، پژوهشکده علوم پایه کاربردی جهاد دانشگاهی، تهران، ایران

5 کارشناس برق الکترونیک، شرکت پالایش نفت تهران، تهران، ایران

10.22034/jewe.2021.259994.1475

چکیده

با توجه به حجم بالای فعالیت‌های نفتی، احتمال بروز آلودگی­های نفتی آب زیرزمینی وجود دارد که نیازمند منشأیابی، پاک‌سازی، مدیریت و پایش گسترده می­باشند. در محدوده صنعتی ری با وجود آلودگی نفتی گسترده، تا پیش از پژوهش حاضر منشأیابی آلودگی نفتی آب زیرزمینی صورت نگرفته است و مطالعات قبلی تنها به مطالعات اکتشافی و استحصال مواد نفتی محدودشده بود. هدف از پژوهش حاضر، تعیین و تفکیک منشأهای نشت مواد نفتی به آب زیرزمینی در محدوده صنعتی ری بود. برای این منظور زمین­شناسی زیرسطحی و هیدروژئولوژی منطقه با حفر چاه­های اکتشافی و تحلیل اطلاعات بررسی‌شده، و مدل مفهومی منطقه تهیه شد. سپس از تمامی منابع بالقوه آلاینده و چاه­های پایش موجود در منطقه نمونه­برداری شده و آنالیزهای تقطیر و کروماتوگرافی گازی- طیف­نگاری جرمی و تحلیل­های هیدروژئولوژیکی انجام شد. بر اساس نتایج حاصل از این پژوهش، 5 هاله اصلی آلودگی در منطقه مشخص گردید. یافته­های پژوهش نشان می­دهد درصورتی‌که آلودگی از یک نوع فرآورده باشد، روش تقطیر سریع‌ترین و کم‌هزینه‌ترین روش شناسایی و تفکیک هاله­های آلودگی می­باشد. زمانی­که آلودگی، تلفیقی از انواع ترکیبات باشد و یا تعداد منشأهای آلودگی زیاد باشد، استفاده از تحلیل نتایج کروماتوگرافی گازی-جرمی و نسبت­های مختلف ترکیبات به­همراه تحلیل­های هیدروژئولوژیکی موردنیاز می­باشد. عمده نشتی­های منطقه موردمطالعه از خطوط انتقال فرآورده‌های نفتی مدفون در زیرزمین بود که معمولاً فرآورده­های نفتی را با فشار بالا منتقل می­کنند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Separation of Oil Pollution Plumes of Groundwater in The Industrial Area of South Tehran

نویسندگان [English]

  • Kamal Khodaei 1
  • Hadi Tabani 2
  • Aliakbar Shahsavari 1
  • Seyed Hossein Qureshi 3
  • Zahra Boosalik 1
  • Benyamin Rezazadeh 4
  • Majid Mokhtari 5
1 Assist. Professor, Department of Environmental Geology, Research Institute of Applied Sciences, ACECR, Tehran, Iran
2 Assist. Professor, Department of Environmental Geology, Research Institute of Applied Sciences, ACECR, Tehran, Iran
3 M. Sc. Environmental Engineering, Tehran Oil Refining Company, Tehran, Iran
4 M.Sc., Department of Environmental Geology, Research Institute of Applied Sciences, ACECR, Tehran, Iran
5 Electrical Electronics Expert, Tehran Oil Refining Company, Tehran, Iran
چکیده [English]

Due to the high volume of oil activities, there is a possibility of groundwater oil pollution, which requires extensive source identification, remediation, management and monitoring. In Rey industrial area, despite widespread oil pollution, the source identification of groundwater oil pollution has not been carried out before the present study, and previous studies were limited to exploration and extraction of petroleum products. The purpose of this study was to determine and separate the sources of oil spills to groundwater in the Rey industrial area. For this purpose, subsurface geology and hydrogeology of the region were studied by digging exploratory wells and data analyzing, and a conceptual model of the region was prepared. Then, all potential sources of pollutants and monitoring wells in the area were sampled and distillation and gas chromatography-mass spectrometry and hydrogeological analyzes were performed. Based on the results of this study, five main contaminated plumes were identified. The research results show that if the contamination is single product, the distillation method is the fastest and cheaper method of identifying and separating the plumes of contamination. When the contamination is a combination of different compounds, the use of gas-mass chromatography analysis and different ratios of the compounds along with hydrogeological analyzes is required. The main leaks in the study area were from the transmission lines of petroleum products buried in the underground, which usually transport petroleum products with high pressure.

کلیدواژه‌ها [English]

  • Groundwater
  • Contamination Plumes Separation
  • Distillation Analysis
  • GC-MS
  • Oil Pollution
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