[Emission of particulates from a pig farm with central air exhaust in the pig stall].
There is increasing concern that airborne dust and particulates from animal enterprises which are emitted into the environment may impair the health of people living in nearby residential areas. Investigations were carried out to trace the distribution of particulate emissions from a piggery in the vicinity by means of an aerosol lidar. Additionally, dust was sampled with a high volume impactor (HVS) at two places downwind (50 m, 115 m) and at a reference point 50 m upwind the piggery. The total dust concentraction in the animal house air varied between 0.2 and 1.0 mg/m3 within 24 hours. 50 m downwind the building 0.08 mg/m3 dust was measured by means of the HVS. At a distance of 115 m downwind the same concentrations (0.037 mg/m3) as the reference point (0.037 mg/m3 upwind the animal house were found. The endotoxin concentrations were 60 ng/m3 (50 m downwind), 15 ng/m3 (115 m downwind) and 9 ng/m3 (50 m upwind). The lidar signals discriminated clearly between the density of the air directly above the exhaust chimney and the 115 m downwind position. It seems that the lidar technique in combination with high volume impaction form an useful tool to describe the distribution distance of particulate pollutants farm animal housing.
Hartung
J
J
Institut für Tierhygiene und Tierschutz, Tierärtliche Hochschule Hannover.
Seedorf
J
J
Trickl
T
T
Gronauer
H
H
D000336:Aerosols; D000395:Air Pollutants, Occupational; D000818:Animals; D004391:Dust; D004787:Environmental Pollution / Q000517:prevention & control*; D005160:Facility Design and Construction; D006799:Housing, Animal; D013552:Swine; D014691:Ventilation / Q000295:instrumentation / Q000379:methods*
D000336:Aerosols; D000395:Air Pollutants, Occupational; D004391:Dust