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Class A Pathogen Reduction in the SSDML Process.

Blais, Jean-François; Shooner, Frédéric; Tyagi, Rajeshwar Dayal; Meunier, Nathalie; Vidyarthi, Ambarish; Surampalli, Rao Y. (2001). Class A Pathogen Reduction in the SSDML Process. Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management , vol. 5 , nº 2. p. 48-57. DOI: 10.1061/(ASCE)1090-025X(2001)5:2(48).

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Résumé

The agricultural use of sewage sludge is limited by the presence of toxic metals and pathogens. The simultaneous sludge digestion and metal leaching (SSDML) process has been developed to resolve this problem. In the present study, the performance of the SSDML process for the elimination of total coliforms, fecal coliforms, fecal streptococci, and coliphages from sewage sludge was verified by shake flask, laboratory bioreactor, and pilot plant bioreactors. The effect of pH, sludge solids concentration, temperature, and sludge types on the bacterial indicator's removal was evaluated. The results showed that the SSDML process was more efficient than the conventional mesophilic aerobic sludge digestion process for the elimination of bacterial (2.5 to >7.0 log units reduction) and viral (>8.0 log units reduction) indicator microorganisms.

Type de document: Article
Mots-clés libres: sludge; laboratory tests; metals (chemical); sewage; pollutants; pathogens; bacteria; bioreactors
Centre: Centre Eau Terre Environnement
Date de dépôt: 11 janv. 2021 15:54
Dernière modification: 11 janv. 2021 15:54
URI: http://espace.inrs.ca/id/eprint/11123

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