Odour emissions from anaerobic piggery ponds. 1. Results of a three season, 14-month survey [An article from: Bioresource Technology]

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Description:
Odour emission rates were measured for seven different anaerobic ponds treating piggery wastes at six to nine discrete locations across the surface of each pond on each sampling occasion over a 14-month period. Emission rate values varied between ponds, between seasons for the same pond and even for the same pond on different days of a sampling week. Average seasonal emission rates ranged from 7.9 to 46.5OU/m^2s, while average emission rates ranged from 16.0 to 29.0OU/m^2s. Factors potentially responsible for the variability in emission rates were investigated, including air and pond liquor temperatures, time of day of sample collection, season and the impact of a prolonged drought.