scholarly journals Anaerobic Co-digestion of the Organic Fraction of Municipal Solid Waste and the Liquid Fraction From the Hydrothermal Carbonization of Industrial Sewage Sludge Under Thermophilic Conditions

2018 ◽  
Vol 2 ◽  
Author(s):  
John A. Villamil ◽  
Angel F. Mohedano ◽  
Juan J. Rodríguez ◽  
Rafael Borja ◽  
M. Angeles De la Rubia
Keyword(s):  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Liquid Fraction ◽  
Hydrothermal Carbonization ◽  
Organic Fraction ◽  
Thermophilic Conditions ◽  
Industrial Sewage ◽  
Industrial Sewage Sludge

Co-composting as an oxygen stabilization of an organic fraction of municipal solid waste and industrial sewage sludge

2013 ◽  
Vol 68 (8) ◽  
pp. 1697-1706
Author(s):  
M. Milczarek ◽  
E. Neczaj ◽  
K. Parkitna
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Organic Waste ◽  
Negative Impact ◽  
Good Method ◽  
Composting Process ◽  
Industrial Sewage ◽  
Industrial Sewage Sludge

The purpose of this work is to study the characteristics of the co-composting of municipal solid waste (MSW), sewage sludge, grass and sawdust. Differing proportions of biodegradable waste were investigated through changes of temperature, oxygen consumption, organic matters, moisture content, carbon, nitrogen, C/N ratio as well as heavy metals and pathogen microorganisms content. The present study has shown that addition of MSW above 10% had a negative impact on the composting process. The initial C/N of the mixtures with a higher MSW content was below 18. Lower losses of organic matter occurred during composting for the mixture with the highest addition of MSW. Although studies have shown that composting is a good method for the disposal of organic waste additional research is required in order to optimize the organic and nitrogen compounds degradation during the co-composting process. In conclusion, a 1:4:4:1 mixture of MSW:sewage sludge:grass:sawdust is recommended because it can achieve high temperature as well as the highest organic matter degradation and highest N content in the final composting product. The concentration of heavy and light metals in all composts was within the limits of regulation of the Polish Minister of Agriculture and Rural Development.

Performance of co-composting sewage sludge and organic fraction of municipal solid waste at different proportions

2018 ◽  
Vol 250 ◽  
pp. 853-859 ◽  
Author(s):  
Difang Zhang ◽  
Wenhai Luo ◽  
Yun Li ◽  
Guoying Wang ◽  
Guoxue Li
Keyword(s):  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Organic Fraction

Co-biodrying of sewage sludge and organic fraction of municipal solid waste: Role of mixing proportions

2018 ◽  
Vol 77 ◽  
pp. 333-340 ◽  
Author(s):  
Difang Zhang ◽  
Wenhai Luo ◽  
Jing Yuan ◽  
Guoxue Li
Keyword(s):  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Organic Fraction

Anaerobic digestion of co-mingled municipal solid waste and sewage sludge

1998 ◽  
Vol 38 (2) ◽  
pp. 127-132 ◽  
Author(s):  
N. Hamzawi ◽  
K. J. Kennedy ◽  
D. D. McLean
Keyword(s):  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Biogas Production ◽  
Empirical Models ◽  
Organic Fraction ◽  
Primary Sludge ◽  
Digestion Process ◽  
Solids Concentration ◽  
Anaerobic Biodegradability

This study evaluated the technical feasibility of the anaerobic co-digestion process in the context of typical North American solid waste. Using biological activity tests, an optimal mixture was identified with 25% organic fraction of municipal solid waste (OFMSW) and 75% sewage sludge (65% raw primary sludge (RAW), 35% thickened WAS (TWAS)) based on biogas production. Also, based on the rate of biogas production, the most anaerobically biodegradable components of the OFMSW were paper and grass. The TWAS and the newspaper were found to be the least biodegradable components. Lab-scale testing indicated that alkaline pretreatment increased the biodegradability of the sewage sludge/OFMSW mixture the most, as compared to the untreated control. Thermochemically pretreated feedstocks inhibited anaerobic biodegradability as compared to the control, whereas the anaerobic biodegradability of thermally pretreated feed was not found to be significantly different from that of the control. Empirical models were developed based on alkaline dose, feed total solids concentration and particle size for biogas production and removal of TS and VS. All three experimental factors were found to be significant with respect to the response variables studied.

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