Department of Environmental Science, Hangzhou Normal University, Hangzhou, P. R. China.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2011;46(5):441-52. doi: 10.1080/10934529.2011.532425.
With the rapid development of swine production in China, odor pollution associated with piggery facilities has become an increasing environmental concern. N-butyric acid (n-BA) is one of the key odor compounds selected to represent volatile fatty acids (VFAs) found in piggery facilities. In this study, two biofilters (BFs) packed with compost (BFC) or sludge (BFS) and two biotrickling filters (BTFs) packed with pall rings (BTFP) or multidimensional hollow balls (BTFM), respectively, were compared with regard to their performances in the removal of n-BA. The non-biological removal capacities of packing material of the bioreactors on a per unit volume basis were BFS>BFC>BTFM>BTFP. Maximum biological removal capacities per unit volume of packing material of the bioreactors all exceeded 9.1 kg/m(3)·d and in the order of BFC>BTFM>BFS>BTFP. Kinetic analysis as well as overall evaluation by radar graphs showed that the BTFs achieved superior removal rates to the BFs in the order of BTFM>BTFP>BFC>BFS. The biotrickling filter packed with multidimensional hollow balls could be an effective technology for VFAs removal. Results from this research provide economical and effective alternatives for odor control in piggery facilities.
随着中国养猪业的快速发展，与猪场设施相关的恶臭污染已成为日益严重的环境问题。正丁酸（n-BA）是代表猪场设施中挥发性脂肪酸（VFAs）的关键恶臭化合物之一。本研究比较了两种生物过滤器（BFs），分别填充堆肥（BFC）或污泥（BFS）和两种生物滴滤器（BTFs），分别填充鲍尔环（BTFP）或多维空心球（BTFM），以评估它们在去除 n-BA 方面的性能。基于单位体积的包装材料的非生物去除容量，生物反应器的顺序为 BFS>BFC>BTFM>BTFP。生物反应器包装材料的单位体积最大生物去除容量均超过 9.1 kg/m(3)·d，顺序为 BFC>BTFM>BFS>BTFP。动力学分析以及雷达图的综合评价表明，BTFM 的去除率优于 BFS、BTFP、BFC。填充多维空心球的生物滴滤器可以是一种去除 VFAs 的有效技术。本研究结果为猪场设施的恶臭控制提供了经济有效的替代方案。
