ارزیابی اثرات زیست محیطی تولید کمپوست از پسماند جامد شهری با رویکرد ارزیابی چرخه زندگی‌ (مطالعه موردی: شهر رشت)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار گروه مهندسی ماشین های کشاورزی دانشکده مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

2 دانشجوی کارشناسی ارشد گروه مهندسی ماشین های کشاورزی دانشکده مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

3 دانشجوی دکتری گروه مهندسی صنایع غذایی، کشاورزی و زیست شناسی، دانشگاه ایالتی اوهایو، ایالات متحده امریکا

چکیده

پسماند جامد شهری، به عنوان مواد دور ریز شناخته می‌شود و به طور روزافزون به این مواد در جهان اضافه می‌شود و سبب ایجاد مشکلات بیشتری از جمله آلودگی هوا و انتشار گازهای گلخانه‌ای در محیط زیست می‌شود. در نتیجه، نیاز به مدیریت درست و پایدار زباله توسط مدیران بیشتر احساس می‌شود. بر این اساس، تولید کمپوست، یکی از روش‌هایی است که علاوه بر کاهش آلایندگی، در کشاورزی نیز مورد استفاده قرار می­گیرد. در شهر رشت نیز از روش تولید کمپوست برای مدیریت 400 تن زباله در روز بهره گرفته می‌شود. در فرایند تولید کمپوست، آلاینده‌هایی ایجاد می­شود که باعث اثرگذاری در محیط زیست می‌گردد. در این مطالعه، برای ارزیابی چرخه زندگی، از نرم افزار سیماپرو، از روش CML-IA baseline V3.04 / World 2000 استفاده شد و 11 بخش اثر بررسی گردید و در نهایت نتایج نرمال‌سازی و وزن‌دهی شدند. واحد کارکردی در این مطالعه 400 تن کمپوست تولیدی به ازای یک روز در نظر گرفته شد. نتایج نشان داد که مقدار پتانسیل گرمایش جهانی برابر 103×28/4 kgCO2 eq. می‌باشد و بیشترین سهم را در این بخش اثر، آلاینده‌های مستقیم و حمل ‌و ‌‌‌نقل دارند. همچنین نتایج پس از نرمال‌سازی نشان داد که تولید کمپوست از زباله بیشترین اثر را به ترتیب در سمیت آب‌های آزاد و سمیت انسان دارد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Environmental Impact Assessment of Compost Production from Municipal Solid Waste Using Life Cycle Assessment (Case Study: Rasht City)

نویسندگان [English]

  • Mohammad Sharifi 1
  • Leyla Behrooznia 2
  • Seyed Hashem Mousavi-Avval 3
1 Associate Professor in Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
2 M.Sc. Student in Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
3 Ph.D. Student in Department of Food, Agricultural and Biological Engineering, The Ohio State University, Wooster, OH, United States
چکیده [English]

Municipal solid waste, known as reject material, is increasingly being added to the world, causing more problems, such as air pollution and greenhouse gas emissions in the environment. As a result, the need for proper and sustainable waste management is felt more by managers. Accordingly, compost production is one of the methods used in agriculture in addition to reducing pollution. In Rasht, this method is used to manage 400 tonns of waste per day. In the process of composting, pollutants are created that affect the environment. In this study, the CML-IA baseline V3.04 / World 2000 method using SimaPro software was applied to evaluate the life cycle and 11 impact categories have been investigated and finally the results were normalized and weighed. The functional unit in this study was 400 tonnes of compost produced per day. The results showed that the global warming potential was calculated with 4.28×103 kgCO2 and the largest share in this section was due to direct emissions and transportation. Also, normalization results showed that compost production from waste had the most effect on marine aquatic ecotoxicity and human toxicity potential, respectively.

کلیدواژه‌ها [English]

  • Global warming potential
  • greenhouse gas emissions
  • Environmental Pollution
  • compost
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