【作者】 王洁；

【导师】 孙珮石；

【作者基本信息】 昆明理工大学 ， 环境工程， 2005， 硕士

【摘要】 CS₂是一种有毒、强刺激性气味的挥发性气体化合物。粘性纤维工厂生产排放大气量、低浓度的CS₂、H₂S废气对环境的危害日益受到人们的重视。国内外成功经验表明,生物法净化低浓度CS₂、H₂S废气是一种行之有效的方法。 本课题以CS₂废气为研究对象,对生物膜填料塔处理低浓度CS₂废气的净化性能和相关的动力学模型验证进行研究,主要研究内容与结论如下: （1）采用本项目研究组开发的微生物菌种挂膜接种的生物膜填料塔净化低浓度的CS₂废气是可行的,CS₂去除率可达到75%左右,达到了与国外相关研究的相近水平。 （2）进口气体浓度、气体流量、循环液流量、温度等因素对CS₂去除率影响的考察实验结果表明:最佳操作条件为气体流量0.1m³/h、循环液流量20L/h、CS₂进口气体浓度为100mg/m³、pH=4.0。气体流量对CS₂去除率的影响最大,当气体流量从0.1 m³/h增加到0.8 m³/h时,CS₂去除率由72.5%下降到37.1%。进口气体浓度对CS₂去除率的影响较大,当CS₂进口气体浓度为100—500mg/m³时CS₂去除率能达到75%～78%。同时CS₂生化去除量有随着进口气体浓度的升高而增大的变化趋势。在3～25℃的实验温度范围内,随着温度的升高,CS₂去除率呈上升趋势。 （3）动力学模型应用验证研究表明,课题组前期建立的“吸附—生物膜”理论的动力学模型对生物膜填料塔净化低浓度CS₂废气也同样具有很好的适用性。采用该模型计算的出口气体浓度、去除率和生化去除量的计算值与实验值较为接近,两者间的相关系数均大于0.94。 对于粘胶纤维厂生产中排放大气量低浓度的H₂S（600～1000mg/m³）、CS₂（500～800 mg/m³）废气,采用生物膜填料塔系统净化处理是可行的。经进一步研究和试验完善后,本研究成果有望达到工业应用水平。 本研究采用本课题组前期研究开发的微生物菌种,通过对低浓度的CS₂废气净化的可行性研究,驯化培养出了一类能净化含硫废气（H₂S、CS₂、SO₂）的微生物菌种,为国内采用生物法净化含硫废气（H₂S、CS₂、SO₂）的研究与应用提供一定的经验和参考。更多还原

【Abstract】 CS₂ is the a kind of poisonous and strong volatility gas chemical compound of irritate temper taste . The viscosity fibre factory placed in proper order the atmosphere capacity and harm to the environment of CS₂ and H₂S waste gas of low concentration suffered attaching importance to people increasingly , and success experience of abroad was indicated , the biopurification technology was purified that purification of CS₂ and H₂S waste gas is one kind of effective method .This thesis was mainly concerned on the biopurification performance of CS₂ waste gas in low concentration and relative kinetic calculation model of Adsorption-Biofilm Theory verified by using a biotrickling filter. The main results were shown as follows :（ 1 ） used the item research team microorganism fungus kind of development was packed into a biological trickling filter that purification of CS₂ waste gas containing sulphocompound and studied an approach to purification of CS₂ waste gas in low concentration was feasible , and the removal efficiency of CS₂ could reach 75% , and was reached closely the abroad correlation study .（ 2 ） the investigation of the removal efficiency of CS₂ influences was gone to the factor such as the optimum operation conditions and the concentration of CS₂ in influent gas , the gas flow and temperature etc . The results of preliminary experiment were shown that, when the biofilter was operated at the optimum operation conditions （the concentration of CS₂ in influent gas was 100mg/m³, the gas flow was 0.1m³/h, circulated liquid flow was 20L/h and pH was 4.0）. The best influence was the gas flow, and the removal efficiency of CS₂ was decreased from 72.5% to 37.1% when the gas flow was increased from 0.1 m³/h to 0.8 m³/h ; the concentration of CS₂ in influent gas was effected the removal efficiency of CS₂, and the removal efficiency of CS₂ could reach 75%-78% when the concentration of CS₂ in influent gas was 100-500mg/m³ . Along with gone up of temperature . the removal efficiency of CS₂ was increased when the temperature in the scope of 3-25 ℃ .（ 3 ）With the experimental data got from the biotrickling filter used in this study , the kinetic calculation model mentioned above was verified purification of CS2 waste gas in low concentration by using a biological trickling filter . According to the kinetic calculation model , the purification efficiency of CS2 in off-gases , the concentration of CS2 in effluent gas, and the biological elimination of CS2 were calculated respectively. The verified results showed that the calculated data of kinetic model were close to the experimental data （correlation coefficients R>0.94）When H2S （ 600-1000mg/m3 ） and CS2 （ 500-800 mg/m3 ） waste gases of low concentration in the viscosity fibre factory , were purified the waste gases by using the biotrickling filter was feasible . After through further to study , this research achievement hopefully achieved the industry application .Used the item research team microorganism fungus kind of development was packed into a biological trickling filter that purification of CS2 waste gas containing sulphocompound, and cultivated a kind of the microorganism fungus to purification containing sulphocompound waste gas （ H2S , CS2 and SO2 ） , for internal research and the application to use the biopurification technology purification containing sulphocompound waste gas （ H2S , CS2 and SO2 ） provides fixed experience and reference更多还原