Filter Media Selection and Performance Effect for Treating Styrene Waste Gas of Low Concentration by Trickling Biofilter

Because of the toxicity and the odor,the styrene has received more attention of people.In this paper,1~# ce- ramic pellet,2~# ceramic pellet,plastic ball and zeolite are studied as the filter media of the biological purifying system. The results of the bulk elimination load and the relative elimination load showed that 1~# ceramic pellet is the best as the filter media of the biological purifying system to purify styrene waste gas in all the media.When the gas flow was 0.6 m~3/h,the liquid flow was 90L/min and the influx gas load was below 180g/(m~3·h),the removal load of 1~# ceramic pellet could reached 163g/(m~3·h) and the styrene removal rate was above 90%.