Ingenious Method Towards Sustainable Decentralized Solid Waste Management

Solid waste management is a huge environmental threat not just in context to Indian Scenario, but globally as well. It is reported that on average around 1.5 lakh tones of solid waste is generated per day in India of which only 20% is treated and managed safely, the rest is dumped on land or burnt both which are highly toxic to human and animal health. At several waste processing sites in India, the fresh mixed waste received each day, is first manually separated to remove plastics and other non-biodegradable contents, this exposes the laborers to a very unhygienic working conditions and exposes them to deadly microbes and stench.. In the present work, we have developed an ingenious way which handles mixed waste with minimal manual intervention and protects the health of laborers while generating good quality manure. The mixed waste is directly fed in to the bio bins where due to microbial action, the biodegradable components are composted, the treated waste is then separated in to compost and non-biodegradable components using a bench top trommel. It was found that Bioinoculum combined with cow dung quickly achieved the compost of mixed organic waste with minimal maintenance in contrast to vermi-composting. From this study, it is observed that the mixed municipality waste could be treated and managed effectively, safeguarding the health of laborers and the generated compost is of good quality which can be used for crop cultivation or gardening

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The effect of solid waste management investments in the Republic of Serbia

Anali Ekonomskog fakulteta u Subotici ◽

10.5937/aneksub2145133p ◽

2021 ◽

Vol 57 (45) ◽

pp. 133-146

Author(s):

Aleksandra Pavlović ◽

Andrea Ivanišević ◽

Ivana Katić ◽

Alpar Lošonc ◽

Mladen Radišić

Keyword(s):

Waste Management ◽

Solid Waste ◽

Solid Waste Management ◽

Animal Health ◽

Waste Reduction ◽

Waste Generation ◽

Solid Waste Generation ◽

The Republic ◽

The Impact ◽

The Relationship

The problem of establishing an effective solid waste management system is complex and still unresolved in Serbian municipalities, cities and settlements. Most landfills in Serbia do not meet basic sanitary standards and can often contain waste that is dangerous to human, plant and animal health, and waste that can be recycled is often dumped. The aim of this paper is to investigate the relationship between waste generation and private investments in waste management. Statistical method of multiple linear regression was used to examine the impact of three predictors - economic development, investments in waste management, and urban population, on the dependent variable - municipal solid waste generation. The results of the research reveal that investments in waste management in Serbia do not have an effect on the waste reduction because the financial resources for such investments are not adequately managed. There is a large number of scientific researches that have dealt with the analysis of the mentioned relationship, however, their number on the example of Serbia is rather scarce. The results of the research could be useful to the state administrations of the Republic of Serbia.

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Design of a Community-Based Anaerobic Digester for Sustainable Solid Waste Management in Ile-Oluji Ondo State Nigeria

Journal of Engineering Research and Reports ◽

10.9734/jerr/2021/v20i917377 ◽

2021 ◽

pp. 80-91

Author(s):

R. I. Areola ◽

O. O. Ipindola

Keyword(s):

Waste Management ◽

Solid Waste ◽

Solid Waste Management ◽

Climatic Conditions ◽

Anaerobic Digester ◽

Design Parameters ◽

Cow Dung ◽

Community Based ◽

Physico Chemical ◽

Ondo State

Aim: A Community-Based Anaerobic Digester was designed in this study for sustainable solid waste management in Ile-Oluji, Ondo state Nigeria. Methodology: Waste samples were collected from selected households for a period of one month and the components and percentage composition were determined. Afterwards, the physico-chemical characteristics of the substrate was investigated and the result used to design a community-based anaerobic digester. Results: The quantity, components and characteristics of waste generated was determined. The rate of waste generation was found to be 0.2kg/capita/day while the organic fraction of the total waste generated was found to be 55.7%. Physico-chemical characterization of the substrate was also investigated. The pH was found to be 6.36 ± 0.18, while the alkalinity 692.81 ± 78.62. The moisture content was found to be in the range of 71.20 ± 4.63%. Total solid was in the range 38.91 ± 5.25 while volatile solid was found to be 26.44 ± 2.83. carbon oxygen demand was found to be 834.33 ± 12.61, total phosphorus was in the range 4.20 ± 0.33. The Carbon on a dry weight basis was found to be in the range 60.41 ± 2.38, while nitrogen was found to be 4.79 ± 1.03. The C/N ration was found to be 21.61. The biogas yield ranged from 0 – 320 cm3 and 0 – 380cm3 per litre of substrate for biodegradable-only samples and biodegradable-cow dung samples respectively, for a forty days period of retention. The cylindrical dome type biogas digester was chosen for this study because of its simplicity in design and maintenance coupled with lower set up cost. The optimum volume of hydraulic chamber and gas storage chamber were designed to be the same as 850m3. Volume of fermentation chamber and sludge layer were calculated to be 2014m3 and 246m3 respectively, while the height and diameter of the fermentation chamber were 7m and 17m respectively. Conclusion: Anaerobic digestion of the biodegradable fraction of solid waste is a viable alternative that government and non-government organizations can key into for the improvement of public health especially in developing countries. The standardization of digester design parameters may pose challenges because of varying climatic conditions and complex socio-economic factors across different geographical contexts. Solutions may have to be adapted and localized to achieve a sustainable world.

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