生物法净化VOCs是近年来发展起来的新工艺，与传统净化工艺相比，具有设备简单、投资少、运行费用低、无二次污染等优点。真菌生物法净化“三苯”不但拥有生物法的各种优点，而且克服了大多数细菌生物法的缺点，特别是在水溶性差的“三苯”净化方面，解决了以前普通生物净化方法难以克服的困难，因此具有更加广阔的应用前景。随着近年来工业发展而出现的大气污染和人们对环境保护的日益重视，今后对于“三苯”的控制也会越来越得到人们的重视。本论文研究的内容主要有：“三苯”降解菌的微生物学特性试验研究、真菌生物过滤塔净化含“三苯”废气的研究、真菌降解“三苯”的机理研究。本论文通过大量试验得出了以下结论：经培养和驯化后用于本实验的菌种为丛梗孢科木霉属绿色霉菌；该菌种的最佳培养基配方为C:N为5:1、25mL的无碳培养基、0.6mL的营养液；菌种的生长周期为第一天到第三天属于对数期或指数期，第三天后进入稳定期，第六天进入衰亡期，通过正交试验得出菌种的最佳生长条件为：pH＝5.5，温度为 25℃，“三苯”加入量为2uL，接种量为0.3mL。真菌过滤法对“三苯“废气具有一定的净化效率，过滤塔的填料、气体的浓度及气体的停留时间对净化效率有影响，试验所选用的填料陶粒和柱状活性炭以体积比为1:1（1#塔和2#塔）及陶粒与柱状活性炭以体积比为2:1进行混合（3#塔）的净化效率为：2#塔＞1#塔＞3#塔，净化效率随入口浓度和停留时间的增加而增加，在同种填料、相同气体停留时间、入口浓度相近的情况下，甲苯的净化效率最高，二甲苯的净化效率最低。 通过研究“三苯”的降解性能，得出苯和甲苯的降解规律符合Monod方程，二甲苯的降解规律符合一级反应动力学，并得出苯为Vmax=631.31ⅹ10-12h-1，Ks=234.68mg/L；甲苯的动力学常数为Vmax=956.02×10-12h-1， Ks=1046.56mg/L；二甲苯的动力学常数为K1=0.0024L/(h?mg)。

Biotreatment of VOCs is a new technology which developed recent years. For this technology, there are many advantages, such as simple equipment, low investments and operational spending and no secondary-pollution. The fungus biotreatment purifies BTX not only to have each kind of merit on biology method, moreover has overcome the majority bacterium biology method shortcoming. Specially in the water-soluble purification aspect, the fungus biotreatment has solved the difficulty which the before ordinary biology purification method over came with difficulty. Therefore the fungus biotreatment has the broader application prospect. The air pollution appeared along with industrial development, from now on the BTX control also could more and more obtain people's value. The main work of this paper is mentioned as follows: searching the constituents of culture medium, the growth cycle and the best growth conditions of this kind of the strain were studied. Inoculated with BTX biodegraded fungi which was screening by incubator shaker experiment. The factors which influent purifying performances of biofilter were investigated, including of BTX concentration, empty bed retention time (EBRT) and character of microorganism medium.The results of many experiments is showed as follows: The best constituents of culture medium is C:N is 5:1, the non-carbon culture medium is 25mL, and the nutrition liquid is 0.6 mL. The first day to the third day is belonged to fungi’s logarithm time or index time. The third day to the sixth day is belonged to fungi’s steady time. The sixth day is belonged to declining time.It is proved that the best growth conditions is pH value 5.5, temperature 25℃, BTX loading 2uL, inoculating amounts 0.3 mL. The results of experiments also show that removal efficiency of biofilter is increased along with the loading of BTX. Three microorganism mediums are mixture of ceramic pellets and activated carbon,which the volume ratio is 1:1(1#and 2# biofilter).The removal efficiency of three microorganism mediums from high to low is 2# biofilter, 1# biofilter, and 3# biofilter. In the same BTX concentration, the general tendency of benzene, toluene and xylene is the less EBRT ,the less removal efficiency. By degradation dynamics experiment of BTX, benzene and toluene are according with Monod equation, xylene is according with one-level dynamics equation.And the dynamics constants are Vmax=631.31ⅹ10-12h-1，Ks=234.68mg/L; Vmax=956.02×10-12h-1， Ks=1046.56mg/L；K1=0.0024L/(h?mg) seperately.