بررسی کمی و کیفی پسماند شهری املش و ارائه راهکارهای اقتصادی برای مدیریت هزینه

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده منابع طبیعی دانشگاه گیلان

2 گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه گیلان

3 دانشیار جنگلداری - دانشکده منابط طبیعی - دانشگاه گیلان

10.22034/jess.2022.309146.1662

چکیده

رشد فزاینده‌ی جمعیت و توسعه شهرنشینی و به تبع آن افزایش تولید موادزائدجامد و انتشار آن در محیط‌زیست یکی از مهم‌ترین چالش جامعه بشری است. پژوهش حاضر جهت تعیین کمیت و کیفیت پسماند تولیدی شهر املش در استان گیلان در یک بازه‌ی زمانی 9 ماهه از تیرماه 1398 تا اسفندماه 1398 در هفت ایستگاه نمونه‌برداری صورت گرفت. نمونه‌ها به‌صورت تصادفی انتخاب شدند و جهت تعیین اجزای تشکیل دهنده پسماند تفکیک به‌صورت دستی انجام گرفت. نتایج نشان داد تولید روزانه پسماند جامد در شهر املش 20 تن می‌باشد، که32 درصد پسماندها را موادقابل بازیافت، 11 درصد مواد غیرقابل بازیافت و 52 درصد را موادآلی تشکیل می‌دهند. هم‌چنین سرانه تولید روزانه پسماند در شهر املش 1.136 کیلوگرم به‌ازای هر نفر در روز به‌دست آمده است. با نظر به این‌که بیش‌ترین اجزاء تشکیل‌دهنده پسماندهای مناطق مسکونی مربوط به موادآلی است بهترین راهکار برای مدیریت این دسته از پسماندها تبدیل موادآلی موجود در زباله خانگی به کودآلی جهت اصلاح خاک و هم‌چنین توسعه فعالیت‌های کشاورزی در شهر املش می‌باشد. هم‌چنین تفکیک از مبدا و بازیافت نیز مناسب‌ترین راهکار اقتصادی برای مدیریت حجم قابل توجه مواد قابل بازیافت موجود در مراکز اداری، بهداشتی‌ودرمانی و تجاری محسوب می‌شود.

کلیدواژه‌ها


عنوان مقاله [English]

Quantitative and qualitative study of Amlash municipal waste and provide economic solutions for cost management

نویسندگان [English]

  • Parisa Talebi 1
  • Babk Tavakoli 2
  • javad Torkaman 3
1 Faculty of Natural Resources, University of Guilan
2 Department of Environment, Faculty of Natural Resources, University of Guilan
3 Associate Professor of Forestry - Faculty of Natural Relations - University of Guilan
چکیده [English]

Management and planning to organize municipal waste is inevitable and city managers seek to find optimal solutions to improve the existing issues and problems of urban management these include municipal waste management. Amlash city due to the lack of a sanitary landfill and the use of unprincipled methods to bury waste and dump garbage in one of the inner neighborhoods of the city called Kiaznik and adjacent to the river for more than 20 years environmental, cultural and health problems for the city. To manage the high volume of waste produced with high diversity requires a comprehensive program. The quantity and quality of waste in different areas is affected by factors sch as: environmental status, season, income, land use and construction status, social, economic and cultural conditions and eating habits. Reduction of production, waste reuse and recycling, energy extraction from landfills are the main goals of the comprehensive waste management plan. Certainly in the near future, recycling communities will become countries with the healthiest environments and the most powerful economies.The present study to determine the quantity and quality of waste produced in Amlash city in Guilan province in a period of 9 months from july 2019 to march 2020 sampling was performed in seven stations included recreation centers, administrative centers, health centers, commercial centers and three residential areas of the rich, middle- class and marginal. In total, the production waste was examined 36 times in each station. From office, commercial and health stations on weekdays after business hours and for the three residential areas of the affluent, the middle, and the suburbs on the days designated by Amlash municipality organization, which was responsible for collecting waste in these areas before being collected by pakbanan municipality and transferred to a garbage truck waste samples were randomly selected and collected the sampling station was also sampled on weekends. The total amount of waste generated in each studied station was collected and weighed. Samples were randomly selected and the compounds in the samples individually and on the basis of six categories plastic, paper and cardboard, glass, metal, organic materials and others waste was collected and weighed in the waste storage container with a special label. Separation was done manually to determine the components of the waste. The samples were weighed by a scale weighing 45 kg. Data from physical analysis of waste in different months of the year and in different places analyzed using Excel version 2010 and Spss version 26. Shapiro- Wilk test was used to assess the normality of the data. To determine the difference between the average production waste in different months of the year and different places for variables that have a normal distribution the one way anova test was used and for variables that have an abnormal distribution the Kruskal- Wallis was used. Tukey test was also used to compare the means for data that had a normal distribution. Depending on the culture of consumption in different communities, the percentage of recyclable materials it is different in municipal waste after analyzing municipal waste, the correct amount can be achieved.Due to the increasing population growth and consequently the increase in consequently the increase in consumption, we will see an increase in the volume of waste produced. Therefore, waste management, especially solid waste, has a special place which require special attention. The results showed that the daily production of solid waste in the city of Amlash is 20 tons, 32% of the waste is recyclable materials, 11% non- recyclable materials and 52% are organic matter. Therefore, 89% of waste can be reduced through recycling and compost. Also, the per capita daily waste production in the city of Amlash is 1.136 kg per person per day. The results show there is a significant difference between plastic, glass, metal, paper and cardboard and other wastes in different months of the year (p<0.05). But there is no significant difference in the amount of organic matter in different months of the year. There is a significant difference in the amount of variables of plastic, glass, paper and cardboard, organic materials and other wastes in different stations (p<0.05). But there is no significant difference in the amount of metal variables in different stations. As a result, Tukey test was used to compare the average between the mentioned components of waste at different times of the year and at different stations. The results for plastic variables show that suburban office and residential stations have a significant difference in the presence of plastic and recreation, health, commercial, affluent and middle- class residential stations do not differ significantly in the presence of plastic. Also, the results obtained from Tukey test for glass variable were determined, health station, commercial station, medium- sized residential station and suburban residential station have a significant difference in the presence of glass. Recreation stations, office and residential stations do not differ significant in the presence of glass. July, August, October, November, December, February and March have significant differences in the presence of glass. The months of September and January are not significantly different in terms of glass. Also showed Tukey test for metal variable in none of the months in which the sampling was done, there was no significant difference in the presence of metal. In fact, recycling and reuse of consumables is one of the principles of increasing productivity in economic systems. If the recycling industry is properly managed it can be as profitable for the economy as the volume of goods produced in the country. In fact, recycling allows without compromising the initial resources and environmental consumption levels remain constant and even increase and this is one of the manifestations of sustainable development. The World Environment Commission, sustainable development is the process of changing resource consumption, directing investment defines the direction of technology development and fundamental change to be compatible with current and future needs. Achieving sustainable development requires simultaneous attention to three dimensions: economic, social and environmental.Organic materials, plastics, paper and cardboard are the three most important types of waste in Amlash which can be used for the purpose of reducing waste and recycling.The results of statistical analysis showed that the weight of dry waste components there is significant difference in the syudied stations and in a different months of the year (p< 0.05). According to the results, the city of Amlash due to its small size and a large average population, quantity and quality of production waste in three residential areas: rich, middle- class and marginal are not much different. Given that most of the components of residential waste are related to organic matter the best economic solution for managing this type of waste is to convent the organic matter in the household waste organic fertilizer for soil improvement as well as the development of agricultural activities in the city of Amlash. Separation from source and recycling are also the most appropriate economic solutions for significant volume management recyclable materials are available in administrative, health and commercial centers. Municipal solid waste (MSW) management is a system involving multiple sub- systems that typically require demanding inputs, materials and resources to properly process generated waste throughput. For this reason, MSW management is generally one of the most expensive services provided by municipalities. Eliminating, reusing or reducing waste is the first route to significant cost savings

کلیدواژه‌ها [English]

  • "Recycling"
  • "Economic solution"
  • "Amlash city"
  • "Solid waste management"