logo BDSP

Base documentaire


Votre avis nous intéresse

Le réseau BDSP met en oeuvre un projet d'innovation et d'amélioration de ses services, dans le souci constant de proposer des contenus de qualité adaptés aux besoins des utilisateurs.

Identifier de nouvelles sources de financements est la condition nécessaire pour assurer la poursuite et la pérennité de cet outil unique qu'est la BDSP, tout en le faisant évoluer.

Pour définir un nouveau modèle économique, nous avons besoin de votre avis : merci de répondre à notre enquête (temps estimé : 5 minutes).

Participer maintenant
Participer plus tard J'ai déjà participé

  1. Removal of pathogenic and indicator microoganisms by a full-scale water reclamation facility.

    Article - En anglais

    Monitoring data and dose-response models were used to evaluate risks associated with viruses and protozoa at a full-scale reclamation facility.

    Indigenous indicator and pathogenic microorganisms were monitored at different stages of treatment for 1 yr at a full-scale water reclamation facility that produced reclaimed water for residential irrigation.

    The combination of biological treatment, sand filtration, and chlorination employed at the plant reduced total and fecal coliforms by>7 log10 and coliphages and enteroviruses by>5 log10.

    Protozoa (Cryptosporidium and Giardia spp.) were reduced by>3 log10.

    Viruses and protozoa were detected in the reclaimed water at levels between 0.01 and 5 per 100 1. The addition of large numbers of bacteriophage as a tracer permitted an assessment of inactivation and/or removal by the filtration and chlorination units, which were shown to provide 1.6 and 1.5 log10 reductions, respectively.

    Analysis of the risk associated with exposure to the reclaimed water shows that the probability of infection following a single exposure to 100 ml of the water was between 10-6 (1 in a million) and 10-8 (1 in 100 million) for landscape irrigation.

    In general, anaerobic treatment of residual solids produced during the wastewater treatment process reduced the levels of indicator and pathogenic microorganisms by approximately 1 log10. (...)

    Mots-clés Pascal : Epuration eau usée, Traitement eau, Réutilisation, Bactérie, Virus, Protozoa, Analyse risque, Station épuration, Floride, Etats Unis, Amérique du Nord, Amérique

    Mots-clés Pascal anglais : Waste water purification, Water treatment, Reuse, Bacteria, Virus, Protozoa, Risk analysis, Sewage treatment plant, Florida, United States, North America, America

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 97-0049409

    Code Inist : 001D16A05A. Création : 21/05/1997.