硫系高效脱臭菌及脱臭技术研究

Malodorous gas of sulfur compounds has wider distribution and more toxicity than other odorous gas, which is the main substance to be removed in the field of air pollution to control. Because the process of biological deodorization has such advantages as lower operational cost, higher efficiency and no the second pollutions compared with those of physical and chemical treatment processes, it has become the main research aspect both home and abroad.During the study, feasible deodorizing bacteria were firstly screened out from the widely distributed deodorizing bacteria group pertinent to the different sulfur compound odors naturally and domesticated into 8 individuals of bacteria of high efficiency. One individual bacterium was identified as the newly found. Based on the conditions and characteristic of bacteria attachment on dynamic and static reactors, the pretreated ceramics and peat were chosen as carrier respectively and the selected single or composite bacteria were inoculated on the carriers. Afterwards, single or a mixture of hydrogen sulfide, methyl mercaptan, dimethyl sulfide, ethanethiol and so forth commonly available in the malodorous gas was treated in biofilter or biotrickling filter and the optimum operating conditions were found in respect of different bacteria to treat different malodorous gas. Deodorization efficiency reached 83%-99% by selecting different bacteria groups of autotrophy, heterotroph or the mixed bacteria when different odors were treated in such units. According to the specific bacteria characteristics, different treatment processes were designed. Bacteria of similar or contrast living conditions were put into one reactor and those of difference into the other reactor, forming a dual or multiple treatment system in series to remove the different odors in different reactors respectively and realizing system optimization.. The experimental results from this study had provided a number of operation parameters for practical engineering design. Furthermore, biological deodorization mechanism was also investigated and served as the guidance to the engineering application, having significant practical and theoretical values..

研究微生物脱除含硫恶臭物质.寻找适宜菌种,驯化,改造出高效脱臭菌;筛选载体材质和形状,设计小型试验装置和流程;试验载体在静态,动态下菌群在载体上成膜条件和微生环境;研究恶臭气流在装置中流态,找出载体上生物膜与恶臭物质充分接触的高效传质条件和微生物脱舻挠跋煲蛩?探讨生物脱臭机理,为恶臭处理开辟新路