Compost Quality and Sanitation on Industrial Scale Composting of Municipal Solid Waste and Sewage Sludge

Municipal solid waste and sewage sludge are produced in large quantities that are often managed through industrial composting treatment. Because of their origin, composition, and complexity, ensuring adequate stabilization of the organic matter, and sanitation of fecal contaminants during composting is of the utmost significance, and difficult to achieve on an industrial scale. In this study, the operations of six industrial composting facilities that process municipal solid waste and sewage sludge were evaluated from the point of view of the sanitation achieved and the quality of the compost produced. In addition, the results were compared using the model of industrial compost from green waste. Differences between the plants were ascribable to operations other than composting systems. High phytotoxicity and fecal contamination above legislation thresholds were found in compost produced from municipal solid waste. In contrast, compost from sewage sludge were more stable and mature than those produced from green waste, and also had an adequate level of sanitation. The raw material and operational factors are of great relevance to obtain a stable, mature, and pathogen-free compost.

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Increasing the quality of organic fertilizer produced from municipal solid waste and

Proceedings of International Forestry and Environment Symposium ◽

10.31357/fesympo.v14i0.395 ◽

2012 ◽

Vol 14 (0) ◽

Author(s):

Urban Council Balangoda

Keyword(s):

Municipal Solid Waste ◽

Solid Waste ◽

Organic Fertilizer

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The effect of substrate ratio and total solids on biogas production from anaerobic co-digestion of municipal solid waste and sewage sludge

Journal of Material Cycles and Waste Management ◽

10.1007/s10163-021-01264-x ◽

2021 ◽

Author(s):

Mansour Ahmadi-Pirlou ◽

Tarahom Mesri Gundoshmian

Keyword(s):

Sewage Sludge ◽

Municipal Solid Waste ◽

Solid Waste ◽

Biogas Production ◽

Total Solids ◽

Substrate Ratio

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Estimating the Characteristics and Emission Factor of Ammonia from Sewage Sludge Incinerator

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18052539 ◽

2021 ◽

Vol 18 (5) ◽

pp. 2539

Author(s):

Seongmin Kang ◽

Joonyoung Roh ◽

Eui-Chan Jeon

Keyword(s):

Sewage Sludge ◽

Municipal Solid Waste ◽

Solid Waste ◽

Emission Factor ◽

Monitoring And Evaluation ◽

Waste Incineration ◽

Uncertainty Range ◽

Sludge Incineration ◽

Nh3 Emission ◽

Secondary Substances

In the case of sewage sludge, as direct landfilling was recently prohibited, it is treated through incineration. Among the air pollutants discharged through the incineration of sewage sludge, NOx and SOx are considered secondary substances of PM2.5 and are being managed accordingly. However, NH3, another of the secondary substances of PM2.5, is not well managed, and the amount of NH3 discharged from sewage sludge incineration facilities has not been calculated. Therefore, in this study, we sought to determine whether NH3 is discharged in the exhaust gas of a sewage sludge incineration facility, and, when discharged, the NH3 emission factor was calculated, and the necessity of the development of the emission factor was reviewed. As a result of the study, it was confirmed that the amount of NH3 discharged from the sewage sludge incineration facility was 0.04 to 4.47 ppm, and the emission factor was calculated as 0.002 kg NH3/ton. The NH3 emission factor was compared with the NH3 emission factor of municipal solid waste proposed by EMEP/EEA (European Monitoring and Evaluation Programme/European Environment Agency) because the NH3 emission factor of the sewage sludge incineration facility had not been previously determined. As a result of the comparison, the NH3 emission factor of EMEP/EEA was similar to that of municipal solid waste, confirming the necessity of developing the NH3 emission factor of the sewage sludge incineration facility. In addition, the evaluation of the uncertainty of the additionally calculated NH3 emission factor was conducted quantitatively and the uncertainty range was presented for reference. In the future, it is necessary to improve the reliability of the NH3 emission factor of sewage sludge incineration facilities by performing additional analysis with statistical representation. In addition, the development of NH3 emission factors for industrial waste incineration facilities should be undertaken.

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