Abstract
Biofiltration has become a widely accepted technology for the removal of hydrogen sulfide (H2S) which is one of the major odor causing gases present in the air streams of municipal wastewater treatment facilities. In addition to odorous nature, H2S is toxic and corrosive. In this study, a biofilter which uses a novel media was employed in a pumping station which is closely located at the University City, Sharjah, UAE. The H2S removal performance data were collected and subsequently used in the determination of kinetics and modeling of H2S. The data were best represented by a first order biofilter model. Based on the first order kinetic constant, a correlation is developed to predict concentrations at the biofilter outlet. Based on the predicted outlet concentrations and dispersion (gaussian and US-EPA AERMOD) models, a study on H2S dispersion is conducted. The dispersion study confirmed a biofilter installation at the pumping station site would significantly reduce H2S levels in the University community and would provide cleaner air.
Highlights
Hydrogen sulfide (H2S) is one of the major compounds that are emitted from municipal industries [1]
A biofilter which uses a novel media was employed in a pumping station which is closely located at the University City, Sharjah, United Arab Emirates (UAE)
The main objectives of this work are to determine the kinetics of H2S removal using the performance data [7], modeling of a biofilter which is packed with the novel media and to study the dispersion effects of H2S in the vicinity of the University community
Summary
Hydrogen sulfide (H2S) is one of the major compounds that are emitted from municipal industries [1]. Hydrogen sulfide is odorous and highly toxic. It is heavier than air so it tends to accumulate in poorly ventilated spaces. Exposure to lower level concentrations of this gas can result in eye irritation, sore throat and cough, shortness of breath, and fluid in the lungs. Long-term low-level exposure may result in fatigue, loss of appetite, headaches, irritability, poor memory, and dizziness. Between 150 - 250 ppm levels, the olfactory nerve is paralyzed after a few inhalations, and the sense of smell disappears. Concentrations over 1000 ppm cause immediate collapse with loss of breathing
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