بررسی میزان امولسیون نفتی حاصل از تخلیه پساب واحد چربی‌گیری یک مجتمع نفتی بر رودخانه اروند

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار دانشکده محیط زیست و انرژی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران

2 دانشجوی کارشناسی ارشد مهندسی منابع طبیعی- محیط زیست، دانشکده محیط زیست و انرژی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران

چکیده

پروژه‌های نفت و گاز و پتروشیمی که در جهت رشد صنعتی و اقتصادی کشور هستند، بدون شک در سطوح بزرگ با اثرات منفی محیط زیستی همراه خواهند بود. در این تحقیق به بررسی میزان امولسیون نفتی در رودخانه اروند پرداخته شد که به‌واسطه تخلیه پساب این مجتمع نفتی ایجاد می‌شود. بر اساس نتایج به‌دست آمده، بیشترین میزان DO ، COD و BOD 7/2 ، 1/64 و 95/8 میلی‌گرم در لیتر و کمترین میزان آن 21 ، 48/4 و 4 میلی‌گرم در لیتر بود. بیشترین میزان نفت و چربی O 18/5 میلی‌گرم در لیتر بود و در رودخانه اروند در بهمن ماه نفت و چربی دیده نشد. بیشترین و کمترین میزانTDS  به‌ترتیب 56 و 21 میلی‌گرم در لیتر، بیشترین و کمترین میزان TSS به‌ترتیب 8400 و 1740 میلی‌گرم در لیتر و بیشترین و کمترین میزان سختی به‌ترتیب 3762 و 680 میلی‌گرم در لیتر بود. با توجه به مقایسه نتایج آنالیز پسابهای خروجی مجتمع نفتی در رودخانه اروند با استاندارد سازمان محیط زیست برای تخلیه پساب به آبهای سطحی مشخص شد که واحد چربی‌گیری به‌تنهایی قادر به تصفیه درست پسابها نبوده و این پساب نیاز جدی به تصفیه مناسب و کارامد قبل از تخلیه به رودخانه اروند دارد و لازم است یک روش تصفیه مناسب‌تر با توجه به شرایط منطقه، جایگزین این روش شود.

کلیدواژه‌ها


عنوان مقاله [English]

Investigating on the Oil Emulsion Compounds Discharged from a Complex Recovered Oil Plant to Arvand River

نویسندگان [English]

  • Amir Hesam Hassani 1
  • Amir Hossein Javid 1
  • Faramarz Moatar 1
  • Behnaz Iraji Largan 2
1 Assist. Prof. of Environment and Energy, Islamic Azad University, Science and Research Branch, Tehran
2 M.Sc. Student of Natural Resources and Environmental Eng., Faculty of Environmental and Energy, Islamic Azad University, Sciences and Research Branch, Tehran (Corresponding Author) (+98 631) 3334697 iraji_b@yahoo.com
چکیده [English]

Oil, gas and petrochemical projects are implemented to achieve the industrial development and economic benefits. The human welfare is one of the main anticipated aims for these projects. However, these projects result in vast environmental impacts. In this research, the rate of petroleum emulsion in Arvand River receiving a petroleum complex wastewater treatment effluent was investigated. Results showed that, the maximum concentrations of DO, COD and BOD were 7.2, 95.8 and 48.4 mg/L and the minimum concentrations were 1.64, 21mg/L and 4 mg/L respectively. The maximum concentration of oil and grease was 18.5 mg/L. Oil and grease content have not been observed in Arvand River during research period. It was also found the maximum concentrations of TSS, TDS and Hardness were 56, 8400 and 3762 mg/L and the minimum were 21 mg/L, 1740 mg/L and 680 mg/L respectively. The results revealed that the effluent quality from this complex does not meet the discharge standard to surface waters and the exiting treatment process is not sufficient. Therefore, a more advanced process is required and recommended.

کلیدواژه‌ها [English]

  • Oil Emulsion
  • Recovered Oil Plant
  • Surface water resources
  • Filtrated Infusion
  • Oil Complex

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