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Composting municipal biosolids in polyethylene sleeves with forced aeration: Process control, air emissions, sanitary and agronomic aspects
Year:
2017
Source of publication :
Waste Management
Authors :
Avidov, R.
;
.
Volume :
67
Co-Authors:
Avidov, R., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Israel
Saadi, I., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Krassnovsky, A., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Hanan, A., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Medina, S., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Raviv, M., Institute of Plant Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Chen, Y., Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Israel
Laor, Y., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Facilitators :
From page:
32
To page:
42
(
Total pages:
11
)
Abstract:
Composting in polyethylene sleeves with forced aeration may minimize odor emissions, vectors attraction and leachates associated with open windrows. A disadvantage of this technology is the lack of mixing during composting, potentially leading to non-uniform products. In two pilot experiments using biosolids and green waste (1:1; v:v), thermophilic conditions (>45 °C) were maintained for two months, with successful control of oxygen levels and sufficient moisture. Emitted odors declined from 1.5–3.8 × 105 to 5.9 × 103–2.3 × 104 odor units m−3-air in the first 3 weeks of the process, emphasizing the need of odor control primarily during this period. Therefore, composting might be managed in two phases: (i) a closed sleeve for 6–8 weeks during which the odor is treated; (ii) an open pile (odor control is not necessary). Reduction of salmonella, E. coli and coliforms was effective initially, meeting the standards of “Class A” biosolids; however, total and fecal coliforms density increased after opening the second sleeve and exceeded the standard of 1000 most probable number (MPN) per g dry matter. Compost maturity was achieved in the open piles following the two sleeves and the final compost was non-phytotoxic and beneficial as a soil additive. © 2017 Elsevier Ltd
Note:
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More details
DOI :
10.1016/j.wasman.2017.05.035
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28717
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:41
You may also be interested in
Scientific Publication
Composting municipal biosolids in polyethylene sleeves with forced aeration: Process control, air emissions, sanitary and agronomic aspects
67
Avidov, R., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Israel
Saadi, I., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Krassnovsky, A., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Hanan, A., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Medina, S., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Raviv, M., Institute of Plant Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Chen, Y., Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Israel
Laor, Y., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Israel
Composting municipal biosolids in polyethylene sleeves with forced aeration: Process control, air emissions, sanitary and agronomic aspects
Composting in polyethylene sleeves with forced aeration may minimize odor emissions, vectors attraction and leachates associated with open windrows. A disadvantage of this technology is the lack of mixing during composting, potentially leading to non-uniform products. In two pilot experiments using biosolids and green waste (1:1; v:v), thermophilic conditions (>45 °C) were maintained for two months, with successful control of oxygen levels and sufficient moisture. Emitted odors declined from 1.5–3.8 × 105 to 5.9 × 103–2.3 × 104 odor units m−3-air in the first 3 weeks of the process, emphasizing the need of odor control primarily during this period. Therefore, composting might be managed in two phases: (i) a closed sleeve for 6–8 weeks during which the odor is treated; (ii) an open pile (odor control is not necessary). Reduction of salmonella, E. coli and coliforms was effective initially, meeting the standards of “Class A” biosolids; however, total and fecal coliforms density increased after opening the second sleeve and exceeded the standard of 1000 most probable number (MPN) per g dry matter. Compost maturity was achieved in the open piles following the two sleeves and the final compost was non-phytotoxic and beneficial as a soil additive. © 2017 Elsevier Ltd
Scientific Publication
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