Numerical simulation of pollutant diffusion in public toilets

Compared with residential restrooms, public toilets usually have higher utilization rates. How to ensure the air quality in through reasonable ventilation is of great significance human health. In this study, an office building a toilet selected as research object, and Airpak 3.0 software adopted simulate airflow velocity distribution different change rates exhaust vent heights. Variations distribution, ammonia concentration, efficiency, other parameters, are compared analyzed. The results show that increasing rate could reduce concentration pollutants toilet, but it has negative effects on efficiency. After comprehensive analysis, desirable chosen value 15h-1. outlet set near source pollution facilitate discharge pollutants. This work may provide theoretical basis for amelioration environment.