scholarly journals Examination and Comparison of Microbial Diversity in Field-Scale Sewage Sludge Composters

10.5772/24083 ◽  
2011 ◽  
Author(s):  
Akihiro Ohnishi ◽  
Akihiro Nagano ◽  
Naoshi Fujimoto ◽  
Masaharu Suzuki
Keyword(s):  
Sewage Sludge ◽  
Microbial Diversity ◽  
Field Scale

Investigation of microbial communities in the field-scale co-composting of sewage sludge and organic municipal solid wastes

2019 ◽  
Vol 19 (1/2) ◽  
pp. 177
Author(s):  
Osman Atilla Arikan ◽  
Bestami Özkaya ◽  
Şenol Yıldız ◽  
Ahmet Demir ◽  
Emre Oğuz Köroğlu
Keyword(s):  
Sewage Sludge ◽  
Microbial Communities ◽  
Solid Wastes ◽  
Field Scale ◽  
Municipal Solid Wastes

Investigation of microbial communities in the field-scale co-composting of sewage sludge and organic municipal solid wastes

2019 ◽  
Vol 19 (1/2) ◽  
pp. 177
Author(s):  
Şenol Yıldız ◽  
Emre Oğuz Köroğlu ◽  
Ahmet Demir ◽  
Bestami Özkaya ◽  
Osman Atilla Arikan
Keyword(s):  
Sewage Sludge ◽  
Microbial Communities ◽  
Solid Wastes ◽  
Field Scale ◽  
Municipal Solid Wastes

scholarly journals Stabilized sewage sludge: Sanitary aspects and potential for conversion to biosolids

2021 ◽  
Vol 26 (52) ◽  
pp. 117-122
Author(s):  
Jelena Jovičić-Petrović ◽  
Anđelka Mijačić ◽  
Blažo Lalević ◽  
Igor Kljujev ◽  
Vera Karličić ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Microbial Diversity ◽  
Fecal Coliforms ◽  
Inorganic Pollutants ◽  
Salmonella Spp ◽  
Effluent Quality ◽  
Waste Sludge ◽  
Treatment Techniques ◽  
Potential Source ◽  
Spore Forming Bacteria

The improvement of wastewater treatment techniques is of crucial importance for effluent quality, but it also results in an increased amount of waste sludge. Dehydrated sludge contains organic matter and nutrients, and therefore it can be used in agriculture and bioremediation, but it is considered a potential source of environmental pollution. As the sludge analyzed in the research does not contain impermissible levels of organic and inorganic pollutants, the aim of the research was to examine microbiological, particularly sanitary, aspects and potential for its further use. Microbial diversity was determined by the standard serial dilution technique and selective media, and sanitary quality indicators (total coliforms, fecal coliforms, Escherichia coli and Salmonella spp.) were determined by the MPN method. The abundance of fungi, actinomycetes, and bacteria (ammonifiers, spore-forming bacteria and Pseudomonas spp.) indicate possibilities for further use of the sludge. The chemical analysis included the following parameters: total nitrogen (N), phosphorus in the form of P2O5 (available P), organic carbon (C), C/N ratio, pH, and water content. The chemical composition indicates the potential of sewage sludge to be used as a soil fertilizer, but its C/N ratio is not adequate to enable successful conversion to biosolids by the composting process. The obtained results indicate a significant level of microbiological contamination, which was most pronounced in the centre of the stabilized sludge pile. The research showed the necessity to conduct further studies on the microbial diversity and sanitary aspects of sewage sludge for proper waste sludge management.

scholarly journals Fate of organic pollutants after sewage sludge spreading on agricultural soils: a 30-years field-scale recording

2007 ◽  
Vol 2 (1) ◽  
Author(s):  
Dominique Patureau ◽  
Mireille Laforie ◽  
Eric Lichtfouse ◽  
Giovanni Caria ◽  
Laurence Denaix ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Agricultural Land ◽  
Agricultural Soils ◽  
Maximum Level ◽  
Dry Weight ◽  
Control Soil ◽  
Field Scale ◽  
Maize Crop ◽  
Linear Alkylbenzene ◽  
Linear Alkylbenzene Sulfonates

Toxic organic compounds, such as the surfactants linear alkylbenzene sulfonates (LAS) and nonylphenol polyethoxylates (NPE), Polycyclic aromatic hydrocarbons (PAH) and residues derived from plastics (PAE-phthalates) end up in sewage sludge. In order to evaluate and quantify the potential environmental risks associated with the xenobiotic introduction into biological life cycle, the EU BIOWASTE project (QLK5-CT-2002-01138) devotes one task to the study of the fate of xenobiotic in a sandy soil after sludge spreading on a 30-year field-scale record experiment. Experimental maize crop fields from Bordeaux (France) have been amended with 100 tons per hectare each 2 years from 1974 to 1992. From 1992 to 2004, the fields were maintained and cropped with maize. This experiment shows that the concentration fluctuations in the sludge amended soil follow the same pattern of those in the sewage sludge showing that there is a real impact of the present xenobiotics in the sewage sludge on the concentration of the xenobiotics in the soil. Nonetheless, 12 years after the last addition of sewage sludge, the residual concentrations remain from 2 to 10 times higher than the content of the control soil, even though these levels are inferior to the Predicted Non Effect Concentration (PNEC). Only LAS level went back to the level in the control soil. However, only the LAS concentration is above the PNEC during all the experiment due to the very high level of LAS in the sludge (20 g/kg dry weight). These results show that even though this compound is much more degradable than NPE and PAE, it may have a long term effect in soil if high quantities are spread. To conclude, this study underlines the importance to fix maximum level for xenobiotic compounds for sewage sludge spreading on agricultural land, and also the central role of the sewage sludge processes in reducing the xenobiotic concentrations before spreading.

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