| Environmental Engineering |
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| A pilot field-scale study on biotrickling filter treatment of NH3-containing odorous gases from organic waste composting plants |
| Nian-tao Xue, Qun-hui Wang, Chuan-fu Wu, Xiao-hong Sun, Wei-min Xie |
| Department of Environmental Engineering, School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China, Beijing Agricultural Biotechnology Centre, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100089, China, Japan TOHIN Company Group Profile, Tokyo 346-0028, Japan |
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Abstract The use of a biotrickling filter was investigated for a pilot field-scale elimination of NH3 gas and other odorous gases from a composting plant in Tongzhou District, Beijing. The inlet gas flow rate was 3500 m3/h and NH3 concentration fluctuated between 2.76–27.84 mg/m3, while the average outlet concentration was 1.06 mg/m3 with an average of 94.9% removal. Critical volumetric loading (removal efficiency=100%) was 11.22 g-N/(m3·h). The odor concentration removal was 86.7%. NH3 removal efficiency decreased as the free ammonia (FA) in the trickling liquid increased. The pressure drop was maintained at about 50 Pa/m and was never more than 55 Pa/m. During the experiment, there was neither backflushing required nor any indication of clogging. Overall, the biotrickling filter was highly efficient and cost-effective for the simultaneous biodegradation of NH3 and other odorous gases from composting, suggesting the possibility of treating odorous gases at the industrial level.
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Received: 12 March 2010
Published: 07 September 2010
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