Overland flow transport of pathogens from agricultural land receiving faecal wastes
نویسندگان
چکیده
منابع مشابه
Overland flow transport of pathogens from agricultural land receiving faecal wastes.
Considerable investment has been made in recent years in improvements to the microbiological quality of urban wastewater discharges to surface waters, particularly in coastal towns, with the aim of reducing the exposure of bathers and surfers to gastrointestinal pathogens. As this source of pollution has come under greater control, attention has started to focus on diffuse catchment sources of ...
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Cryptosporidium, a manure-borne protozoan parasite that is common in the environment, has recently been recognized as an important microbial contaminant of water. Cryptosporidium parvum (C. parvum) can cause infection and diarrhea in many mammalian hosts, including humans. Because cattle, particularly calves, are considered a major source of C. parvum , it is important to understand the movemen...
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A model of solute transport in overland flow is developed and applied to the simulation of surface fertigation. Water flow is simulated using the depth-averaged, one-dimensional shallow water equations. Solute flow is represented by an advectiondiffusion model. The resulting set of three partial differential equations is sequentially solved at each time step. First, water flow is computed using...
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Concerns for microbial safety of surface water facilitate development of predictive models that estimate concentrations and total numbers of pathogen and indicator organisms leaving manure-fertilized fields in overland flow during runoff events. Spatial variability of bacterial concentrations in applied manure introduces high uncertainty in the model predictions. The objective of this work was ...
متن کاملPathogens in Animal Wastes
INTRODUCTION AND BACKGROUND Concerns about potential animal waste pollution of the environment have focused mainly on water, and the potential impacts of nitrogen, phosphorous, and turbidity (suspended solids). However, contemporary issues associated with potential pollution impacts of livestock operations now include microbial pathogens, gaseous emissions (such as ammonia), and odors (odorants...
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ژورنال
عنوان ژورنال: Journal of Applied Microbiology
سال: 2003
ISSN: 1364-5072
DOI: 10.1046/j.1365-2672.94.s1.10.x