انتخاب بهترین روش ساماندهی پساب کارخانه فراوری ماهی با توجه به مدل AHP (کارخانه فرآوری ماهی میرود)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه شیلات و محیط زیست، موسسه آموزش عالی تجن، قائمشهر، ایران

2 گروه عمران محیط زیست، دانشکده محیط زیست ، دانشگاه تهران، تهران، ایران

چکیده

سابقه و هدف:
صنعت فراوری ماهی تولید کننده مقدار زیادی از مواد زائد جامد و پساب است. پساب فراوری ماهی به‌طور عمده شامل پساب حاصل از پردازش اولیه ماهی خام، شستشوی کارخانه و زائدات خام باقی مانده(خون، امعا و احشا و...) است. چربی بالای موجود در پساب شهرک صنعتی می رود باعث ایجاد مشکل تصفیه، دفع و بحران‌های محیط زیستی گردیده است. هدف از این مطالعه انتخاب بهترین روش ساماندهی و استفاده از پساب کارخانه فراوری ماهی با توجه به پرکاربردترین تکنولوژی‌های جهانی مدیریت پساب می‌باشد.
مواد و روش ­ها:
در این تحقیق با استفاده از روش سلسله مراتبی AHP (Analytic Hierarchy Process) و شناسایی روش‌های ممکن تصفیه فاضلاب، از بین گزینه‌های صافی چکنده، لاگون هوادهی، هضم بی هوازی و لجن فعال با استفاده از معیارهای فنی، اقتصادی، محیط زیستی و مدیریتی به تشخیص بهترین روش ساماندهی این پساب پرداخته شد.
نتایج و بحث:
با توجه به نتایج حاصل از AHP روش لجن فعال با امتیاز 417/0 در اولویت اول و لاگون هوادهی، هضم بی هوازی و صافی چکنده به ترتیب با امتیازهای 284/0، 246/0 و 052/0 در اولویت‌های بعدی با توجه به نظر متخصصین قرار گرفتند.
نتیجه گیری :
بررسی‌های نهایی نشان داد که بهترین روش استفاده از پساب کارخانه فراوری با توجه به معیارها و زیر معیارهای فنی، مدیریتی، محیط زیستی و اقتصادی، روش لجن فعال بود.

کلیدواژه‌ها

عنوان مقاله [English]

Selection of the best wastewater treatment method in fish processing plants according to the AHP model (case study: Mirod fish processing planet)

نویسندگان [English]

  • Marziyeh Aghasi 1
  • Naser Mehrdadi 2
1 Department of Seafood Science and Technology, Faculty of Environment and Fishery,Tajan High Education Institute, Qaemshahr, Iran
2 Department of Environmental Engineering Water and Wastewater, Faculty of Environment, University of Tehran, Tehran, Iran
چکیده [English]

Introduction:
Fish processing industry produces huge amounts of solid waste and wastewater. This wastewater consists of preliminary processing of the raw fish, washing the plant, and raw offal products (e.g., blood and viscera). The high-fat content of industrial wastewater causes problems in treatment and disposal and raises environmental crises. The purpose of this study is to select the best method for organizing a wastewater treatment in fish processing plant based on the most widely used wastewater management technologies worldwide.
Material and methods:
This research was done by the AHP method. Based on the general conditions in fish wastewater treatment plants in industrial estates and expert judgments, and by using technical, economic, environmental, and administrative criteria, the processes were carried out. Treatment of wastewater included trickling filter, aeration lagoon, anaerobic digestion, and active sludge. The obtained results were assessed by the Expert Choice software.
Results and discussion:
According to our results, the best method was the active sludge method with a score of 0.417 and after that, aeration lagoon, anaerobic digestion and trickling filter with a score of 0.284, 0.264 and 0.052, respectively, were the best choices based on the expert's opinion.
Conclusion:
According to the technical, managerial, environmental and economic criteria and sub-criteria, this study showed that the best method for wastewater treatment in a fish processing plant was the active sludge.

کلیدواژه‌ها [English]

  • AHP
  • Environmental pollution
  • Fish processing wastewater
  • Wastewater management

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فصلنامه علوم محیطی
دوره 16، شماره 3
مهر 1397
صفحه 167-180

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