This study was carried out to investigate the effect of enzyme complex on odor emission from the process of making swine liquid manure.
Ammonia and hydrogen sulfide concentrations were significantly decreased by adding enzyme complex of liter/ton level of liquid swine slurry in the manure storage tank compare with control according to the time.
Characteristics of liquid swine slurry were affected by adding enzyme complex, total nitrogen and ammonia nitrogen contents were reduced relatively compare with control, and were decreased depending on the time.
Ammonia and hydrogen sulfide concentrations in the finishing pig building were significantly decreased by adding enzyme complex compared with control.
In conclusion, the results obtained from this study suggest that the adding enzyme complex of liter/ton level of liquid swine slurry for making liquid swine manure may improve the quality of swine liquid fertilizer and reduce the odor emission. Also farm scale enzyme complex treatment may improve the air quality in the finishing pig building and deduce the compound odor of swine farm.