应用生物膜填料塔对工业废气中常见的甲苯 、 苯乙烯 、甲醛 、CS₂， SO₂ ， H₂S ， NO_x 等7种气态污染 物进行净化实验，结果表明，采用专用菌种挂膜制作的生物膜填料塔对该7种气态污染物均有生物净化作用，但其对 SO₂， H₂S ， NO_x 等3种无机污染物的生物净化作用（生化去除量可达 90～ 150mg/L·h） 明显优于对甲苯、苯乙烯、甲醛、 二硫化碳等4种有机污染物的净化作用（生化去除量除对甲苯的可达 100 mg/L·h 外，均低于 30 mg/L·h）。 研究确定了净化各污染物的适宜操作条件 ， 并对7个专用菌种进行了鉴定 。

  Bio-purification test of the seven kinds of gaseous pollutants, toluene, styrene, formaldehyde, CS₂, SO₂, H₂S and NO_x, which are commonly contained in industrial waste gases, by using the biofilm-packing tower system was performed. The test results showed that the biofilm-separately. And the purifying effects of biofilm-packing towers for three kinds of inorganic pollutants, SO₂, H₂S and NO_x (bio-elimination capacity B = 90 — 150 mg/L·h) , were better obviously than that for three kinds of organic pollutants, styrene, formaldehyde and CS₂, (bio-elimination capacity B < 30 mg/L·h) . The suitable operation conditions of the biofilm-packing tower system for purifying the 7 kinds of gaseous pollutants were confirmed and the seven kinds of special bacteria strains were identified in this study.