کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
681609 | 1460034 | 2012 | 5 صفحه PDF | دانلود رایگان |
The effects of leachate recycling and bed mixing on the removal rate of H2S from waste gas stream were investigated. The experimental setup consisted of an epoxy-coated three-section biofilter with an ID of 8 cm and effective bed height of 120 cm. Bed material consisted of municipal solid waste compost and PVC bits with an overall porosity of 54% and dry bulk density of 0.456 g cm−3. Leachate recycling had a positive effect of increasing elimination capacity (EC) up to 21 g S m−3 bed h−1 at recycling rates of 75 ml d−1 , but in the bed mixing period EC declined to 8 g S m−3 bed h−1. Pressure drop had a range of zero to 18 mm H2O m−1 in the course of leachate recycling. Accumulation of sulfur reduced removal efficiency and increased pressure drop up to 110 mm H2O m−1 filter during the bed mixing stage.
► Leachate recycling had positive effect on increasing elimination capacity up to 21 g s m−3 bed h−1.
► Maximum pressure drop obtained up to 18 mm H2O m−1 filter at leachate recycling rates of 75 ml d−1.
► In the bed mixing period elimination capacity declined to 8 g S m−3 bed h−1.
► Pressure drop increased up to 110 mm H2O m−1 filter during the bed mixing stage.
► Accumulation of sulfate up to 100 mg S g−1 bed reduced removal efficiency.
Journal: Bioresource Technology - Volume 109, April 2012, Pages 26–30