Fe_(3)O_(4)负载填料强化生物滴滤器净化氯苯性能研究  

Study on the Performance of Fe_(3)O_(4)-loaded Filler Enhanced Biological Trickling Filter for the Purification of Chlorobenzene

作　　者：滕乐 朱宁 王丽萍[1] TENG Le;ZHU Ning;WANG Liping(School of Environment and Spatial Information,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116

出　　处：《环境科学与技术》2022年第11期128-138,共11页Environmental Science & Technology

基　　金：国家自然科学基金项目(51778612,51974314)。

摘　　要：文章采用共沉淀法制备负载Fe_(3)O_(4)的聚氨酯海绵填料,考察生物滴滤器(BTF)不同条件下净化氯苯废气的性能和微生物群落变化。结果表明,负载Fe_(3)O_(4)后,BTF系统第18天启动完成,比未负载的缩短7 d;停留时间90、60、30 s时,BTF系统最大去除负荷分别为28.39、38.20和57.87 g/(m^(3)·h),比未负载的相应提高了25.68%、50.63%、73.63%;BTF停运7 d后系统性能在第5天完全恢复。负载Fe_(3)O_(4)后填料表面变得粗糙,微生物生长均匀;高通量测序表明,运行80 d后BTF中优势菌种占比上升明显,系统内优势菌门为变形菌门、拟杆菌门、放线菌门,优势菌属为罗河杆菌属、假单胞菌属;负载Fe_(3)O_(4)后,微生物群落中菌种组成向具有强降解能力的优势菌种转化,提高BTF净化性能。Polyurethane sponge packing loaded with Fe_(3)O_(4)was prepared by co-precipitation method to investigate the performance and microbial community changes in the purification of chlorobenzene exhaust gas under different conditions of biological trickling filter(BTF).The results showed that the start-up of the BTF system was completed at the 18th day after loading with Fe_(3)O_(4),which was 7 d shorter than that of the unloaded one.The maximum removal loads of the BTF system were28.39,38.20 and 57.87 g/(m^(3)·h-1)at the residence times of 90,60 and 30 s,respectively,which were correspondingly higher than that of the unloaded one by 25.68%,50.63%,73.63%.The system performance recovered completely on the 5th day after the BTF was stopped for one week.After loading Fe_(3)O_(4),the surface of filler became rough and microorganisms grew evenly;high-throughput sequencing showed that the percentage of dominant species in BTF increased significantly after 80 d of operation,and the dominant phyla in the system were Proteobacteria,Bacteroidetes and Actinomycete,and the dominant genera were Rhodobacter and Pseudomonas.After loading Fe_(3)O_(4),the composition of the microbial community was transformed to the dominant species with strong degradation ability,which improved the purification performance of BTF.The loadings of Fe_(3)O_(4)transformed the composition of the microbial community to the dominant species with strong degradation ability and improved the purification performance of BTF.

关 键 词：氯苯 生物滴滤器 Fe_(3)O_(4) 微生物群落 净化性能 

分 类 号：X701[环境科学与工程—环境工程]