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مدل‌سازی موازنه مواد در سیستم پردازش پسماندهای شهری با استفاده از تابع انتقال فاکتور بازیابی (RFTF)-مطالعه موردی: کارخانه کمپوست بابل | ||
| محیط شناسی | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 10 فروردین 1401 | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jes.2021.282754.1007872 | ||
| نویسندگان | ||
غلامرضا نبی بیدهندی   1؛ امید حسن زاده مقیمی2؛ امیر نبی بیدهندی3؛ مریم ربیعی ابیانه 2
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| 1استاد، دانشکده محیط‌زیست، پردیس دانشکده‌های فنی، دانشگاه تهران، تهران، ایران | ||
| 2کاندیدای دکتری، گروه مهندسی محیط‌زیست، پردیس بین‌المللی کیش، دانشگاه تهران، کیش، ایران | ||
| 3کاندیدای دکتری برنامه‌ریزی محیط‌زیست، گروه مهندسی محیط‌زیست، پردیس بین‌المللی ارس، دانشگاه تهران، جلفا، ایران | ||
| چکیده | ||
| با توجه به اهمیت واحد پردازش در خط تولید صنعتی کمپوست، این پژوهش با هدف مدل‌سازی موازنه مواد در خطوط پردازش کارخانه تولید کمپوست بابل با ظرفیت ۱۰۰ و ۲۵۰ تن پذیرش پسماند مخلوط شهری در روز بر پایه تابع انتقال فاکتور بازیابی (RFTF) انجام گرفت. بدین منظور پس از برداشت میدانی از ورودی و خروجی دستگاه‌های خط پردازش کارخانه کمپوست بابل در مقاطع زمانی مختلف و آنالیز کمی و کیفی ترکیبات تشکیل دهنده پسماندهای تولیدی، مدل‌سازی موازنه مواد در سیستم پردازش پسماندهای شهری بر پایه RFTF صورت گرفت. محاسبات برای خطوط پردازش کمپوست انجام و دیاگرام موازنه مواد استاندارد برای خط پردازش در هر دو وضعیت تهیه شد. مطابق یافته‌ها، خط پردازش جدید کارخانه تولید کمپوست بابل دارای عملکردی مطلوبتر نسبت به خط پردازش قدیمی این کارخانه است؛ به نحوی که خط جدید توانسته میزان پسماندهای دفنی (ریجکتی نهایی خط پردازش) را به میزان ۸۴/۱۹ درصد نسبت به خط قدیمی کاهش دهد. همچنین راه‌اندازی خط پردازش جدید، میزان مواد آلی جداسازی شده که جهت تولید کمپوست به فاز تخمیر و هوادهی منتقل می‌شود را به میزان ۳۹/۱۹ درصد افزایش داده و نسبت مواد استحصال شده دارای ارزش اقتصادی را نیز به میزان ۴۵/۰ درصد بهبود بخشیده است. | ||
| کلیدواژه‌ها | ||
| مدیریت پسماند؛ سیستم پردازش؛ مدل‌سازی موارنه مواد؛ کمپوست؛ بابل | ||
| عنوان مقاله [English] | ||
| Materials Balance of Municipal Solid Waste Composting System using Recovery Factor Transfer Function (RFTF): A case study from Babol Composting Facility | ||
| نویسندگان [English] | ||
| Gholam Reza Nabi Bidhendi1؛ Omid Hasanzadeh Moghimi2؛ Amir Nabi Bidhendi3؛ Maryam Rabiee Abyaneh2 | ||
| 1Full Professor, School of Environment, College of Engineering, University of Tehran, Tehran, Iran | ||
| 2PhD Candidate, Department of Environmental Engineering, Kish International Campus, University of Tehran, Kish, Iran | ||
| 3PhD Candidate, Department of Environmental Engineering, Aras International Campus, University of Tehran, Jolfa, Iran | ||
| چکیده [English] | ||
| 1. Introduction The municipal solid waste composting line consists of three main parts of processing, aeration and processing. In each of these lines, special machines and equipment are used. The main purpose of the processing phase is to isolate the composting materials from other materials and reduce their size. The equipment used in the processing sector should be able to disassemble the composting materials from the inorganic compounds in the blended waste composition with the desired performance. The purpose of this study was to determine the mass balance of equipment used in the processing unit of Babol Compost Production Plant and its compliance with the standard model of Recovery Factor Transfer Function (RFTF) model and to provide corrective strategies to improve the efficiency of separation of materials in the processing unit of this plant. 2. Materials and methods In 2000, the composting complex of Babol city with an initial credit of 10 billion Rials was set up to reduce environmental pollution and to improve the waste disposal method with a capacity of 100 tons of municipal waste mixed with it. Due to the increase in the population of Babol city and consequently the increase in waste production and the burnout and technical defects of the production line of compost, in 2018, after about 18 years, the Babol Municipality carried out corrective actions at the factory. In February 2018, the production line of compost with a capacity of 250 tons of waste per day began its activities. The difference between the old and new lines of the composting plant in Babol in the control system, the number of Trommel Screens, the Bag Opener, the Magnet and the acceptance capacity, so that in the old processing line (with the capacity to accept 100 metric tons of municipal waste per day), a trommel screen machine 8 meters without a magnet and other mechanical separators, while in the new processing line (with a capacity of 250 tons per day), two trommel screen (8 meters and 12 meters), one bag opener machine, two magnets and a control system PLC is predicted and implemented. The full understanding of the components of an efficient processing and design system requires that the mass balance of the system be calculated in such a way that material flows can be tracked in the unit processing chain. The mass balance is, in fact, the application of the crime survival law in a system. In other words, the mass balance is the equivalent of the total feed mass of the input system with the total mass of the output currents. The results of such an analysis can be used to determine the proper capacity of separate processing units. Recovery Factor Transfer Function (RFTF) can be represented by a diameter matrix, each of which represents the percentage of waste components that remain in the mainstream material after processing has taken place. These components include iron, non-ferrous metals, glass, paper, plastics, residual materials (OR) and residual non-organic materials (IR). In this study, the physical analysis of the waste provided by the waste management of the municipality of Babol was the criterion for the calculation of the baseline flow of input waste in the RFTF model. Accordingly, the calculations were performed for both the old and the new lines, and the standard mass balance diagram for the processing line was prepared in both states. In order to compare the mass balance in processing lines of 100 tons and 250 tons of waste in the composting plant of Babol with the standard status of the output of the RFTF model, the field harvesting of the input and output of each of the processing lines at different times, under standard conditions, and the analysis of the compounds Based on the classification of the waste components in the RFTF function (consisting of 7 groups: ferrous metals, non-ferrous metals, glass, paper, plastic, organic wastes and non-wastes), it was carried out. 3. Results and discussion Based on field analysis and physical analysis and calculations carried out in the RFTF model, the separation ratio of materials in the rotating circle of the old line of the composting plant of Babol with a capacity of 100 tons of waste per day (8 hours) or 12.5 tons per hour is 52.78% under the sieve and 47.22 on sieve. The results of physical analysis and calculations showed that the 12-meter trommel screen of the 250-ton processing line of the composting plant of Babol with an inlet capacity of 31.25 tons of waste per hour separates materials from 50.82% on sieve and 49.18% under the sieve. These values for 8 m trommel screen of this line with an input rate of 15.87 tons of waste per hour are 52.96% on sieve and 47.04% under the sieve, respectively. The separation ratio of materials in the waste processing unit of the old production line of compost Babol with an acceptance capacity of 100 tons per day, with the specified characteristics, was 52.8% organic matter (composting capacity), 44.8% final residue (waste Burial) and 2.4% of the material have economic value (extracted from the manual recycling station), which, in comparison with the standard output of the RFTF model, with the same material input ratio, 9.6%, separates the lower organic matter and the same percentage of materials The final plan is to land the landfills for the landfill. Also, the separation ratio of the material in the waste processing unit of the new production line of the compost Babol with a capacity of 250 tons per day and with the specifications indicated, 72.19% organic matter (composting ability), 24.96% final disposal (burial wastes) and 2.85%, Materials of economic value (extracted from the manual recycling station and by magnets) that differentiate the material with economic value less than the standard output of the RFTF model with the same input materials, 7.17%, organic materials and 0.19% Similarly, the percentage of final materials to be shipped to Landfill for burial is 7.36% higher. Comparison of the findings shows that the new processing line of the composting plant of Babol (with a capacity of 250 tons per day) has a performance compared to the old processing line of this plant (with a capacity of 100 tons of waste per day), so that the new line has been able to reduce the amount of waste The depot (the final processing line) will decrease by 19.84% compared to the old line. Also, with the launch of a new processing line, the amount of organic matter released for the production of compost to the fermentation and aeration phase is increased by 19.39% and the ratio of extracted materials has an economic value of 0.45%. In spite of the more convenient operation of the new processing line of the composting plant in Babol compared to the old processing line of this plant, comparing the standard RFTF output for the line with the characteristics of the new line of the compost plant in Babol with the results of the field analysis, the separation ratio of this line shows that the line performance with the output The standard of this model is far away. 4. Conclusion The results of the study showed that the new processing line of the composting plant in Babol has a more favorable performance than the old processing line of the factory, so that the new line has been able to reduce the amount of burial waste (final processing line) by 19.84% compared to the old line. Also, the launch of a new processing line increased the amount of organic matter that was transferred to the fermentation and aeration phase to produce compost to 19.39% and improved the ratio of extracted economic value to 0.45%. | ||
| کلیدواژه‌ها [English] | ||
| Waste management, waste processing line, mass balance modeling, compost, Babol | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 155 |
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