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  1. Fate and transport model of Cryptosporidium.

    Article - En anglais

    The waterborne pathogen Cryptosporidium has been identified in surface drinking water supplies.

    Suspected sources of this pathogen include sewage and the feces of animals, particularly dairy calves.

    There are many dairy cattle and significant sewage effluent discharges in the Catskill-Delaware watershed that is part of the New York City water supply system.

    This water supply serves 8,000,000 customers with 5.8 x 109 L (1.5 billion gal. of water daily).

    This paper is concerned with the movement and fate of pathogens from wastewater and dairy sources and the resulting raw water quality for New York City.

    Manure and Cryptosporidium oocysts are modeled as surface pollutants and assumed to move in response to runoff events in the six watershed-reservoir systems within the Catskill-Delaware watershed.

    Oocyst degradation in manure and in water is modeled with first-order kinetics.

    Rudimentary stream routing and reservoir modeling with a first-order decay function complete the fate and transport modeling of oocysts in the watercourse.

    Reported effluent discharge rates and oocyst concentrations in secondary treated sewage allow estimation of wastewater-derived oocyst contributions.

    This research highlights the importance of wastewater-derived oocysts, the need for expanded research into oocyst fate in streams and reservoirs, and the concentration of oocysts in sewage effluent.

    Mots-clés Pascal : New York, Etats Unis, Amérique du Nord, Amérique, Pollution eau, Eau potable, Qualité eau, Contrôle microbiologique, Pathogène, Cryptosporidium, Apicomplexa, Protozoa, Oocyste, Devenir polluant, Phénomène transport, Modélisation, Rejet eau usée, Eau usée urbaine, Fumier ferme

    Mots-clés Pascal anglais : New York, United States, North America, America, Water pollution, Drinking water, Water quality, Microbiological testing, Pathogenic, Cryptosporidium, Apicomplexa, Protozoa, Oocyst, Pollutant behavior, Transport process, Modeling, Waste water discharge, Urban waste water, Farmyard manure

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

    Cote : 99-0202589

    Code Inist : 001D16A02. Création : 16/11/1999.