Styrene degradation along the bed height of perlite biofilter
Styrene degradation along the bed height of perlite biofilter
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DOI：
10.1002/jctb.461
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发表时间：
2001-08
影响因子：
3.4
通讯作者：
J. Páca;B. Koutský;M. Maryška;M. Halecký
中科院分区：
文献类型：
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作者：
J. Páca;B. Koutský;M. Maryška;M. Halecký
生物滤池的整个床层高度被分成串联的四个独立的反应器阶段。这种配置允许单独测量每个阶段的渗滤液pH，并最大限度地减少固定化培养的阶段间混合。采用内径50 mm、各级床高27 cm的珍珠岩生物滤池，在恒定负荷条件下，研究了污染物在滤床停留时间对生物降解特性和固定化菌种组成的影响。污染物在床中的停留时间对整个生物滤池的去除效率和去除能力没有影响，但在各个阶段都观察到了这些参数的变化。该生物滤池的去除能力为140g−，3h−1，去除效率大于90%。降解活性使渗滤液的pH值降至3.5~3.0。微生物分析表明，在低pH值条件下，真核细胞能降解苯乙烯。当pH值大于4.0时，混合培养中也出现了原核生物。©2001化学工业学会
The whole bed height of a biofilter was divided into four individual reactor stages in series. This configuration permits a measurement of the leachate pH of each stage individually and minimizes interstage mixing of the immobilized culture. The extent to which the residence time of pollutant in the filter bed influenced biodegradation characteristics and the composition of immobilized culture under conditions of a constant loading rate was studied using a perlite biofilter having an internal diameter of 50 mm and the bed height of each stage being 27 cm. The residence time of pollutant in the bed had no influence on the removal efficiency and the elimination capacity of the whole biofilter although some changes of these parameters in the individual stages were observed. The biofilter achieved an elimination capacity of 140 gm−3 h−1 at removal efficiencies greater than 90%. Degradation activity decreased the pH value of the leachate to 3.5–3.0. Microbial analyses showed that styrene was degraded by eukaryotic cells at low pH values. At pH values above 4.0 prokaryotes were also present in the mixed culture. © 2001 Society of Chemical Industry