title: Aerosol production by irrigation equipment used for land application of wastewater.
abstract: Aerosol production from sprays of four irrigation systems used for upland application of wastewater was studied over a range of operating and meteorological conditions by sampling particles from evaporated tracer droplets. Most aerosol-forming droplets were less than 100 mum in diameter with median number diameters from 1 to 3 mum and median mass diameters appreciably larger. More than 10(10) respirable sized particles were produced per minute by single nozzles. Actual wastewater sprays were similar. Diffusion calculations indicate decreases in concentration of 1 to 2 orders of magnitude in 1 km.
mesh_terms: D000383:Agriculture; D000397:Air Pollution; D010316:Particle Size; D012722:Sewage; D014865:Waste Disposal, Fluid / Q000379:methods*; D014919:Wind
chemical_list: D012722:Sewage