کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8870441 | 1622617 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Environmental comparison of alternative treatments for sewage sludge: An Italian case study
ترجمه فارسی عنوان
مقایسه محیط زیست درمان های جایگزین برای لجن فاضلاب: مطالعه موردی ایتالیا
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کلمات کلیدی
PCODTVSLFGLDFCOMLSPFGTAPCRWWTPTSSVSs - VSSLCA - ارزیابی چرخه حیاتLife Cycle Assessment - ارزیابی چرخه عمر یا چرخه حیاتWet oxidation - اکسیداسیون مرطوبEnergy recovery - بازیابی انرژیWastewater treatment plant - تصفیه خانه فاضلاب chemical oxygen demand - تقاضای اکسیژن شیمیاییTotal solids - جامدات جامدflue gas treatment - درمان گاز دودکشIncineration - سوزاندنdry matter - ماده خشکAir pollution control residues - مانده های کنترل آلودگی هواtotal suspended solids - مجموع مواد جامد معلقVolatile suspended solids - مواد جامد معلق دائمیAnaerobic digestion - هضم بیهوازیAND - وInc - وارزComposting - پوسال یا کمپوستCod - کادوTotal volatile solids - کل مواد جامد فرارLandfill gas - گاز دفن زبالهLand spreading - گسترش زمینLandfill - گورستان یا محل دفن زباله
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
A Life Cycle Assessment (LCA) was applied to compare different alternatives for sewage sludge treatment: such as land spreading, composting, incineration, landfill and wet oxidation. The LCA system boundaries include mechanical dewatering, the alternative treatment, transport, and final disposal/recovery of residues. Cases of recovered materials produced as outputs from the systems, were resolved by expanding the system boundaries to include avoided primary productions. The impact assessment was calculated using the CML-IA baseline method. Results showed that the incineration of sewage sludge with electricity production and solid residues recovery collects the lowest impact indicator values in the categories human toxicity, fresh water aquatic ecotoxicity, acidification and eutrophication, while it has the highest values for the categories global warming and ozone layer depletion. Land spreading has the lowest values for the categories abiotic depletion, fossil fuel depletion, global warming, ozone layer depletion and photochemical oxidation, while it collects the highest values for terrestrial ecotoxicity and eutrophication. Wet oxidation has just one of the best indicators (terrestrial ecotoxicity) and three of the worst ones (abiotic depletion, human toxicity and fresh water aquatic ecotoxicity). Composting process shows intermediate results. Landfill has the worst performances in global warming, photochemical oxidation and acidification. Results indicate that if the aim is to reduce the effect of the common practice of sludge land spreading on human and ecosystem toxicity, on acidification and on eutrophication, incineration with energy recovery would clearly improve the environmental performance of those indicators, but an increase in resource depletion and global warming is unavoidable. However, these conclusions are strictly linked to the effective recovery of solid residues from incineration, as the results are shown to be very sensitive with respect to this assumption. Similarly, the quality of the wet oxidation process residues plays an important role in defining the impact of this treatment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Waste Management - Volume 69, November 2017, Pages 365-376
Journal: Waste Management - Volume 69, November 2017, Pages 365-376
نویسندگان
Lidia Lombardi, Cristina Nocita, Elena Bettazzi, Donatella Fibbi, Ennio Carnevale,