The performance of laboratory scale methanol-degrading biofilters packed with lava rock was checked during almost 1 yr under different conditions. The biomass concentration and biomass adaptation of the inoculum dramatically affected the start-up and the performance of the systems during the first stages of operation. A fast start-up was obtained when using concentrated and adapted inocula, while diluted or non-adapted inocula proved to be much less efficient. The performance of the reactor during long-term operation was significantly affected by the toxic load and moisture content of the gas. Critical loads between 120 and 280 g/m3h were reached during different phases of the study. The reactor had a high stability to EBRT changes when working at values between 48.0 and 91.1 s, showing little or no negative effect when decreasing the EBRT. Hardly any difference was observed regarding performance when using either a downflow or upflow feed, although slightly better results were obtained when working in a downflow mode.
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机译：在不同条件下将近1年的时间里检查了装有熔岩的实验室规模的甲醇降解生物滤池的性能。在操作的第一阶段，接种物的生物质浓度和生物质适应性极大地影响了系统的启动和性能。当使用浓缩的和适应接种的接种物时，可以快速启动，而稀释或不适应的接种物效率低得多。反应器的长期运行性能受到气体的有毒负荷和水分含量的显着影响。在研究的不同阶段，达到了120至280 g / m3h的临界负荷。当在48.0至91.1 s之间的值下工作时，反应堆对EBRT变化具有很高的稳定性，当降低EBRT时，几乎没有或没有负面影响。使用下流或上流进料时，几乎没有观察到性能方面的差异，尽管在下流模式下工作时可获得更好的结果。
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