Promoting Circular Developmentand Recycling Solid Waste - In the View of Ecological Civilization Construction

2014 ◽  
Vol 878 ◽  
pp. 873-878
Author(s):  
Tan Zhu ◽  
Shuai Gao
Keyword(s):  
Solid Waste ◽  
Solid Wastes ◽  
Consumption Pattern ◽  
Natural Material ◽  
Ecological Civilization ◽  
Internal Relation ◽  
Production And Consumption ◽  
Industrial Civilization ◽  
Material Circulation ◽  
Resource Shortage

While massive natural resource is consumed in the production and consumption pattern of industrial civilization, plenty of solid waste is produced and discharged into natural environment, which has broken natural material circulation and caused problems like resource shortage, environmental pollution and ecological destruction. While solid waste may cause serious pollution, it still contains rich regenerative resources. In the background of ecological civilization construction, promoting circular development and recycling solid waste would be significant, and it is suitable to China's conditions." In the View of human civilization transformation, the significance of promoting circular development and recycling solid waste is analyzed and the internal relation between circular development and ecological civilization is also explored. Circular development conforms to the ecological civilization idea of respecting, conforming to and protecting nature, and provides material foundation for ecological civilization. From national conditions, the urgent need of promoting circular development and recycling solid wastes is stated. According to ecological civilization construction, on scientific understanding, top design, technology innovation and other aspects, relevant countermeasures are put forward.

CLEAN UTILIZATION OF MUNICIPAL SOLID WASTES AND ALTERNATIVE FUELS DERIVED FROM IT

2020 ◽  
Vol 5 (4) ◽  
pp. 202-209
Author(s):  
Alexander Topal ◽  
◽  
Iryna Holenko ◽  
Luidmyla Haponych ◽  
◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Alternative Fuels ◽  
Solid Wastes ◽  
Municipal Solid Wastes ◽  
Local Conditions ◽  
Ecological Requirements ◽  
Clean Technologies

For the municipal solid waste (MSW) to be used in a proper way, it is necessary to implement clean technologies capable of thermal treatment of MSW and RDF in order to produce heat and electricity while meeting current ecological requirements. Nowadays, a number of technologies for MSW/RDF thermal treating are being used worldwide. Among them, the most proven technologies, applicable for industrial introduction, have been considered while analyzing their advantages/ disadvantages accounting for local conditions of Ukraine.

scholarly journals Biodegradation of Hemicellulose-Cellulose-Starch-Based Bioplastics and Microbial Polyesters

Recycling ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 22
Author(s):  
Mateus Manabu Abe ◽  
Marcia Cristina Branciforti ◽  
Michel Brienzo
Keyword(s):  
Population Growth ◽  
Environmental Impacts ◽  
Plant Biomass ◽  
Solid Wastes ◽  
Pollution Level ◽  
Consumption Pattern ◽  
Decomposition Rates ◽  
Natural Plant ◽  
Final Disposition

The volume of discarded solid wastes, especially plastic, which accumulates in large quantities in different environments, has substantially increased. Population growth and the consumption pattern of societies associated with unsustainable production routes have caused the pollution level to increase. Therefore, the development of materials that help mitigate the impacts of plastics is fundamental. However, bioplastics can result in a misunderstanding about their properties and environmental impacts, as well as incorrect management of their final disposition, from misidentifications and classifications. This chapter addresses the aspects and factors surrounding the biodegradation of bioplastics from natural (plant biomass (starch, lignin, cellulose, hemicellulose, and starch) and bacterial polyester polymers. Therefore, the biodegradation of bioplastics is a factor that must be studied, because due to the increase in the production of different bioplastics, they may present differences in the decomposition rates.

scholarly journals Municipal Solid Waste Characterization and Landfill Gas Generation in Kakia Landfill, Makkah

2021 ◽  
Vol 13 (3) ◽  
pp. 1462
Author(s):  
Faisal A. Osra ◽  
Huseyin Kurtulus Ozcan ◽  
Jaber S. Alzahrani ◽  
Mohammad S. Alsoufi
Keyword(s):  
Solid Waste ◽  
Energy Recovery ◽  
Solid Waste Management ◽  
Landfill Gas ◽  
Drainage System ◽  
Solid Wastes ◽  
Generation Model ◽  
Gas Generation ◽  
Municipal Solid Wastes ◽  
Makkah City

In many countries, open dumping is considered the simplest, cheapest, and most cost-effective way of managing solid wastes. Thus, in underdeveloped economies, Municipal Solid Wastes (MSW) are openly dumped. Improper waste disposal causes air, water, and soil pollution, impairing soil permeability and blockage of the drainage system. Solid Waste Management (SWM) can be enhanced by operating a well-engineered site with the capacity to reduce, reuse, and recover MSW. Makkah city is one of the holiest cities in the world. It harbors a dozen of holy places. Millions of people across the globe visit the place every year to perform Hajj, Umrah, and tourism. In the present study, MSW characterization and energy recovery from MSW of Makkah was determined. The average composition of solid waste in Makkah city is organic matter (48%), plastics (25%), paper and cardboard (20%), metals (4%), glass (2%), textiles (1%), and wood (1%). In order to evaluate energy recovery potential from solid waste in Kakia open dumpsite landfill, the Gas Generation Model (LandGEM) was used. According to LandGEM results, landfill gas (methane and carbon dioxide) generation potential and capacity were determined. Kakia open dump has a methane potential of 83.52 m3 per ton of waste.

scholarly journals Application research of the Chinese traditional ecological wisdom

2020 ◽  
Author(s):  
Qian Zhao ◽  
Keyword(s):  
Transition Period ◽  
Ecological Engineering ◽  
Development Trend ◽  
Practical Significance ◽  
Ecological Value ◽  
Ecological Civilization ◽  
Industrial Civilization ◽  
City Construction ◽  
Urbanization Rate ◽  
Ecological Wisdom

In the transition period of China's urbanization rate reached 60%, the excessive stage from the traditional industrial civilization to ecological civilization is the inevitable choice. In the transition period, we cannot only absorb the western development experiences of eco-city, but also should combine China's traditional ecological wisdom from the agricultural civilization during thousands of years. In this paper, the author analyses the concept and origin of traditional ecological wisdom, the related research status and development trend at home and abroad. Collect and select the technique or technology which is full of ecological value or representative, the ecological engineering which is time tested or benefited by ten thousand generations in certain region of China, establish a case base of the Chinese traditional ecological wisdom. On this basis, research the ecological concept, principles, strategies and methods of these cases. Construct a set of system principle to concise wisdom and draw the outline of urban soul. Finally, combining with China's environmental problems since the industrialization and the various problems encountered in the process of ecological city construction, to explore how to use the ecological wisdom spectrum guiding the sustainable studies, planning, design and management of the contemporary urban. Through the study of this article, it has the theory significance by constructing the principle of traditional ecological wisdom. It has the cultural meaning by inheritancing the traditional culture essence. It also has the practical significance by discovering the power source of the eco-city construction in the future.

scholarly journals Trans-regional rice supply paradigm reveals unsustainable water use in China

Water Policy ◽  
2021 ◽  
Author(s):  
Liang Wu ◽  
Min Wang ◽  
Kirti Avishek
Keyword(s):  
Water Use ◽  
Northeast China ◽  
Southwest China ◽  
Water Security ◽  
Rice Production ◽  
Consumption Pattern ◽  
Sustainable Food ◽  
The Past ◽  
Production And Consumption ◽  
Global Population

Abstract Rice is an important staple food for more than half of the global population and one of the largest water consumers on earth. Improving the efficiency of water embedded in rice production and supply could have great implications for food and water security. This study starts from Yunnan, a traditional rice producing and consuming province in southwest China, and analyses its rice supply structure and dynamics, together with embedded water footprints (WFs) of three other regions: Northeast China, South and Southwest China and Southeast Asia. The results show that Yunnan has been under through drastic food change in the past decades, leading to increasing production and supply gap. Yunnan is found to have the least WF (778.2 m3/t) for rice production across the study regions, while Northeast China consumes the highest blue WF (364.6 m3/t) and blue to total WF ratio (97.7%). The study indicates that Northeast China is at risk of groundwater deficit due to rice production and export and the current rice production and consumption pattern is inefficient. The study suggests that policies for groundwater extraction, water resource price and international trade need to be in place to ensure sustainable food supply and water use at regional and national levels.

scholarly journals DETERMINATION OF PROPERTIES AND ELEMENTAL COMPOSITION OF MUNICIPAL SOLID WASTE IN ORDER TO PROPOSAL OF WASTE-TO-ENERGY PROJECT IN BINH DUONG PROVINCE

2018 ◽  
Vol 54 (2A) ◽  
pp. 56
Author(s):  
Phung Chi Vy
Keyword(s):  
Solid Waste ◽  
Elemental Composition ◽  
Calorific Value ◽  
Dry Weight ◽  
Solid Wastes ◽  
Waste To Energy ◽  
Composition Analysis ◽  
Energy Plant ◽  
Inorganic Components

Domestic solid wastes are classified into 10 samples of 04 groups with different sizes: 2 samples with sizes under and over 120 mm (M1-1, M1-2); 2 samples with sizes under and over 80 mm (M2-1, M2-2); 2 samples with sizes under and over 40 mm (M3-1, M3-2); 4 samples with sizes under 40 mm, 40 to 80 mm, 80 to 120 mm and over 120 mm (M4-1, M4-2, M4-3, M4-4). Results of sorting 10 solid waste samples into food, cloth, wood, plastic, paper, rubber/leather, metal, glass, other organic and inorganic components shown that recycled combustible, non-recycled combustible portions are ranged from 15,46 to 93,90 %, from 5,34 to 80,17 %, respectively. The density of 10 compressed garbage samples is ranged from 525,9 to 2016,7 kg/m3; moisture contents are ranged from 18.03 to 20.92 %. Ash content is ranged from 1.12 to 9.49 % dry weight; Calorific value is ranged from 3164,9 to 5757,0 kcal/kg of garbage. The volume of leached water from 10 kg wet garbage pressed by 250 kg load in 2 days is 300 ml (equivalent to 327,1 g). Results of elemental composition analysis shown that the contents of C, H, N, Cl, S are ranged from 35,00 to 51,96, from 6,01 to 6,23, from 0,41 to 0,88, from 0,44 to 0,56, from 0,14 to 0,84 %, respectively. On this basis, the author have proposed a waste-to-energy plant with capacity of 250 tons of waste/day to generate the electricity with capacity of 17,0 MW/day.

Waste and Discharge Sand Use of Foundry for the Manufacture of Concrete Tiles

2018 ◽  
Vol 759 ◽  
pp. 3-8
Author(s):  
A.V. dos Santos ◽  
Mauro C. Marchetti ◽  
Ayane R. de Souza ◽  
Deoclécio Junior Cardoso Silva ◽  
Leoni Pentiado Godoy ◽  
...  
Keyword(s):  
Solid Waste ◽  
New Technologies ◽  
Environmental Concern ◽  
Industrial Sector ◽  
Solid Wastes ◽  
Concrete Slabs ◽  
Waste Generation ◽  
Natural Sand ◽  
Solid Waste Generation ◽  
Casting Sand

The progress in the world industrial sector, together with new technologies increases solid waste generation and the consequent concern with the correct management of them. One of the biggest problems in the foundry sector is the generation of solid waste, consisting mainly of waste sands or discarded sand castings (ADF). Proper waste disposal is a challenge for industries, which are increasingly concerned about the need to preserve the environment and seeking for sustainable development. In Brazil, fused production in 2008 exceeded three million tons, generating approximately one ton of waste for each ton of metal produced. The main destination of this waste is industrial disposal landfills, which have high cost and is an increasing environmental concern for companies. Therefore, the aim of this research was to solve this problem, that is, it was proposed a methodology to reuse these solid wastes, testing our methodology by using concrete slabs with incorporation of foundry sand in different concentrations, in an increasing order of 5%, where natural sand was replaced by founding sand. The viability for the use of casting sand in relation to the resistance was significant in the traces 30% and 35%.

Polymer Consumption, Environmental Concerns, Possible Disposal Options, and Recycling for Water Treatment

2020 ◽  
pp. 971-989
Author(s):  
Tawfik A. Saleh ◽  
Gaddafi I. Danmaliki
Keyword(s):  
Water Treatment ◽  
Municipal Solid Waste ◽  
Rapid Growth ◽  
Specific Pattern ◽  
Environmental Concerns ◽  
Consumption Pattern ◽  
Polymer Waste ◽  
Production And Consumption ◽  
Industrialized Nations ◽  
Disposal Options

The increasing awareness of the environment has raised so much concerns in the way we live and the manner to which we dispose our waste. The rapid growth in polymer production has resulted in increasing concerns about the consumption of nonrenewable resources and the environmental impacts associated with its production and disposal. Polymer waste is one of the major components in municipal solid waste and is increasingly becoming a huge burden in industrialized nations. The rise in the use of plastic, coupled with increasing concerns about its disposal, has led to a renewed interest in its recycling and recovery. The technologies involved in the recovery and recycling of polymers are rapidly growing, however, there is no specific pattern of treating polymer waste. The technology depends on the type of material used in the production and consumption pattern. This chapter, therefore, discusses the patterns of polymer consumption, the environmental concerns, and different modes of recycling polymer waste.

Introduction to Solid Waste and Its Management

2015 ◽  
pp. 1-23 ◽  
Author(s):  
Hamidi Abdul Aziz ◽  
Salem S. Abu Amr
Keyword(s):  
Developing Countries ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Urban Population ◽  
Solid Wastes ◽  
Economic Prosperity ◽  
Proper Management ◽  
The World ◽  
Msw Composition

Municipal Solid Waste (MSW) disposal has become an increasingly serious problem in many parts of the world. In general, greater economic prosperity and a higher percentage of urban population correspond to a greater amount of solid waste produced. However, less effort has been exerted in the proper management of solid wastes produced by urban dwellers, particularly in developing countries. This chapter introduces the basic MSW rules. MSW composition, production, and collection are also highlighted. Furthermore, the concept of landfilling and waste decomposition is discussed in this chapter.

scholarly journals Mismanagement of Solid Waste & its Impact on the Environment of Peshawar City

2012 ◽  
Vol 2 (4) ◽  
pp. 182
Author(s):  
Obaid-ur- Rehman ◽  
Syed Jamil Hassan Kazmi ◽  
Anwar Alam
Keyword(s):  
Local Government ◽  
Solid Waste ◽  
Demographic Data ◽  
Solid Wastes ◽  
Phase Iii ◽  
Sample Surveys ◽  
Interview Schedule ◽  
Afghan Refugees ◽  
Demographic Yearbook ◽  
Proper Disposal

The purpose of the study is to investigate reasons, types and workable for the disposal of wastes in Peshawar city with special emphasis on Municipal Corporation, Peshawar Development Authority (PDA) and local govt. The focus of the study is to ensure proper management of solid waste and cleanliness of the targeted areas. The data was collected through pre-designed questionnaire and interview schedule. The major sources of demographic data are census, sample surveys, demographic yearbook, statistical handbook, national and international publications. (Alam: 2006). Board, Karkhano and Hayat Abad Phase III were the targeted area of the study. A sample of size 300 was selected out of 37,839 population in three target areas i.e. Board 96 out of 12,164, Hayat Abad Phase III 121 out of 15,281, and Karkhano 83 out of 10,394 through proportion allocation method of sampling.The results of the study indicated that Local government has no proper planning, for the disposal of solid waste. The  residents  have no awareness for the proper disposal of the solid wastes.  Population is directly proportion to the increase in solid wastes mismanagement, more over Afghan Refugees has accelerated the solid waste mismanagement in the area. 

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