A Field Technique Measuring Virus Decay and Potential Aerosol Hazard from Wastewater Sprinkler Irrigation

摘要: The increased use of domestic wastewater for irrigation purposes has stimulated a growing practice sprinkler irrigating from oxidation ponds and other wastewaters. Aerosols generated these systems may contain potentially hazardous pathogens. Subsequently, the aerosols can infective viruses which be carried through air to surrounding populations. Thus, public health hazard created by wastewater. This study is an investigation means virus decay rate in potential aerosol clouds examined. A injection human animal simulant, MS-2 bacteriophage, described. In addition, factors are known effect survival discussed. ambient that discussed include relative humidity, temperature, solar radiation, age. suspending fluid dissolved inorganic salt content, organic fIlterable solids pH. aerosolized was measured with all-glass impinger (AGI-30) when wind velocity distance sampler system, initial final concentrations were known. system defined terms likelihood particles inhaled penetrate lung. function particle size. size distribution cloud Andersen sampler. high homogeneous concentration insured using pressure differentials delivery line. By injecting into line at constant along tracer, Bacillus subtilus var niger (Bacillus globigii) spores, during airborne exposure environmental could determined. determined assuming had no affect on tracer. It proposed engineer, after knowing rates under varying conditions, define buffer zones would required around sites. zone reduce possibility contaminating humans prohibiting access. usefulness field technique demonstrated found undergo 33.3 percent per minute dark (no radiation) 33 70.6 material, 29.4 salts, 30.1 mg/l solids, 17 C temperature. resulting spray process appeared because collected 84.2 droplets range inhaled.