Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina s/n, 47011 Valladolid, Spain.
J Hazard Mater. 2011 Jun 15;190(1-3):622-30. doi: 10.1016/j.jhazmat.2011.03.090. Epub 2011 Mar 31.
The deodorization performance of a biofilter and an activated sludge diffusion (AS) system was comparatively evaluated in terms of removal efficiency (RE) and process stability at empty bed residence times (EBRT) ranging from 94 to 32s. Both bioreactors were fed with a synthetic odorous emission containing H(2)S, butanone and toluene at 23.6-43.3, 4.3-6.3 and 0.4-0.6 mg m(-3), respectively. While the outlet H(2)S concentration was always lower than 1.4 mg m(-3), the REs for butanone and toluene remained higher than 95% in both bioreactors regardless of the EBRT. The continuous supply of wastewater in the AS unit did not affect removal and appeared to be a requirement for efficient pollutant abatement. Despite the narrow carbon source spectrum treated, the AS system maintained a large bacterial diversity over time. Therefore, the results obtained confirmed the potential of AS systems as a robust and efficient biotechnology for odour treatment in WWTPs.
在空床停留时间（EBRT）为 94 至 32 秒的范围内，比较了生物过滤器和活性污泥扩散（AS）系统在去除效率（RE）和过程稳定性方面的除臭性能。两种生物反应器均以含有 H（2）S、丁酮和甲苯的合成恶臭排放物为食，浓度分别为 23.6-43.3、4.3-6.3 和 0.4-0.6 mg m（-3）。尽管出口 H（2）S 浓度始终低于 1.4 mg m（-3），但无论 EBRT 如何，两种生物反应器中丁酮和甲苯的 RE 均保持在 95%以上。连续供应废水在 AS 单元中并没有影响去除效果，似乎是有效去除污染物的必要条件。尽管处理的碳源范围较窄，但 AS 系统随着时间的推移保持了较大的细菌多样性。因此，所得结果证实了 AS 系统作为 WWTP 中恶臭处理的强大而有效的生物技术的潜力。
