عنوان مقاله [English]
نویسنده [English]چکیده [English]
Air is one of the essential elements for survival, without which life is not possible. Therefore, in order to maintain it, measures should be taken to prevent and control its pollution. Sewage treatment plant personnel are always exposed to hazardous, hazardous chemicals, and if they do not control their health will be affected. Biofiltration is a new technology for controlling air pollutants at low cost and high efficiency. Its application has been remarkably developed in recent years due to its simple operation and the absence of waste materials. Biological reactor for 12 months at ambient temperature was in the vicinity of the Condensed sludge. The results showed that the removal efficiency of biofilter in an empty bed residence time of 30 and 15 s with a higher removal rate of 97 % for hydrogen sulfide. The empty bed contact time of 30, 15 and 10 s ammonia removal efficiency greater than 96% was achieved. According to the studies and the results of laboratory analysis of odor emissions of hydrogen sulfide and ammonia gases in Municipal Wastewater Treatment Plant, which is also known as toxic air contaminants. These compounds also have toxic. According to the analysis done system has an average efficiency of over 90% of odor causing compounds had. Therefore, the above method is proposed to clean up contaminants in order to control the health of personnel.