产酸过多的废气不宜用生物过滤器处理，但可用生物洗涤器(Bioscrubber)或生物滴滤器(Trickling filter)这两种更易调节pH 的生物方法来处理。
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对生物滴滤器处理低流量、浓度有机废气进行了研究。
Treatment of low flow high concentrated organic waste gas by biotrickling filter has been studied.
针对H2S污染的严峻形势，构建了包括催化再生装置和生物滴滤器的生物催化氧化装置。
To the rigorous pollution of H2S, the bio-catalytic oxidation reacter was constructed which included a catalytic regenerator and a trickled-bed biofilter.
在安放新过滤器之前，曲轴箱必须滴干。
The crankcase has to drain before you put on the new filter.
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