tailieunhanh - Literature Review of Air Pollution Control Biofilters and Biotrickling Filters for Odor and Volatile Organic Compound Removal

In 1996, the . Department of Energy (DOE) and Mexico s Petr leos Mexicanos (PEMEX) began sponsoring this project to characterize the nature and sources of suspended particulate matter found in the ambient air in Mexico City. This collaborative effort follows another program sponsored by DOE and PEMEX in the early 1990 s to study gas phase pollutants and photochemical oxidants in the Valle de Mexico. 3,4 The high altitude, the year- round sunshine, and the complex atmospheric chemistry characteristic of Mexico City create a challenging laboratory for scientific research. Participants in the research include (1) Instituto Mexicano del Petr leo (IMP); (2) Los Alamos National Laboratory (LANL);. | literature Review of Air Pollution Control Biofilters and Biotrickling Filters for Odor and Volatile Organic Compound Removal Reza Iranpour a Huub . Cox a Marc A. Deshusses b and Edward D. Schroederc a Hyperion Treatment Plant 12000 Vista del Mar Playa del Rey CA 90293 rezairanpo@ for correspondence b Department of Chemical and Environmental Engineering University of California Riverside CA 92521 c Department of Civil and Environmental Engineering University of California Davis CA 95616 Published online 30 March 2005 in Wiley InterScience . DOI A literature study was conducted to compare the feasibility of biofilters and biotrickling filters for the treatment of complex odorous waste air containing hydrogen sulfide H2S organic reduced sulfur compounds and chlorinated and nonchlorinated volatile organic compounds VOCs . About 40pilot-plant studies and full-scale applications at wastewater treatment plants and other facilities were reviewed. Reactor design and pollutant removal efficiencies were summarized in tables for easy reference and for a perspective on the current state of the art and to allow comparison between different projects. The survey indicated that both biofilters and biotrickling filters are capable of combining a high H2S and odor removal efficiency with VOC removal. Apart from odor abatement biological treatment therefore holds promise for reducing the overall toxicity and potential carcinogenicity of VOC-containing odorous waste air from wastewater treatment plants and other facilities. VOC removal efficiencies were in general lower than those of H2S and odor although concentrations of individual VOC species were relatively low. This indicates that for effective treatment of VOC-containing odorous waste air the design and operation should emphasize VOC removal as the rate-limiting parameter. 2005 American Institute of Chemical Engineers Environ Prog 24 254-267 2005 2005 American Institute of .