微包埋恶臭假单胞菌复合填料制备及性能评价
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摘要
填料是废气生物净化系统的核心组件,对净化性能有直接影响。以聚乙烯醇、海藻酸钠、腐熟植物纤维等为辅料,采用微包埋法制备出一种包埋恶臭假单胞菌复合填料,并将其装填于生物过滤塔中评价其对甲苯的净化性能。结果表明,制备的复合填料性能稳定、启动速度快、适宜微生物生长,对甲苯有较好的净化效果。生物过滤塔在空床停留时间47 s、进气负荷不高于42.00 g·(m3·h)~(-1)的条件下,去除率可达90%以上。系统停运3 d和7 d,重新启动1 h后,去除率即可恢复至80%以上。动力学研究显示,与Michaelis-Menten模型相比,Haldane模型对使用该复合填料的生物净化过程拟合度较高。制备的复合填料理化性能好,对甲苯具有较高的净化效果,具有一定的应用前景。
Filler is one of the key components of the biological filtration system, which has a direct impact on its purification performance. A composite filler was prepared by the micro-embedding method with the Pseudomonas putida and other auxiliary materials of polyvinyl alcohol, sodium alginate, decomposed plant fiber etc. The performance of purifying toluene with this composite filler was evaluated in a biological filtration tower.The results show that the composite filler had a reliable property, fast start-up rate and was suitable for the microobial growth. A good purifying efficiency occurred for the biofilter packed with this composite filler, and it could reach over 90% when the empty bed residence time was 47 seconds and the influent load was not higher than 42.00 g ·(m~3 · h)~(-1). The removal rate could restore to over 80% after 1 h restarting for the biofilter was out of service for 3 d and 7 d. Compared with the Michaelis-Menten model, the degradation dynamics in the biofilter could be better fitted with the Haldane model. The composite filler presented a good physicochemical property and highly effective purification of toluene, which implied a promising application prospect in future.
Filler is one of the key components of the biological filtration system, which has a direct impact on its purification performance. A composite filler was prepared by the micro-embedding method with the Pseudomonas putida and other auxiliary materials of polyvinyl alcohol, sodium alginate, decomposed plant fiber etc. The performance of purifying toluene with this composite filler was evaluated in a biological filtration tower.The results show that the composite filler had a reliable property, fast start-up rate and was suitable for the microobial growth. A good purifying efficiency occurred for the biofilter packed with this composite filler, and it could reach over 90% when the empty bed residence time was 47 seconds and the influent load was not higher than 42.00 g ·(m~3 · h)~(-1). The removal rate could restore to over 80% after 1 h restarting for the biofilter was out of service for 3 d and 7 d. Compared with the Michaelis-Menten model, the degradation dynamics in the biofilter could be better fitted with the Haldane model. The composite filler presented a good physicochemical property and highly effective purification of toluene, which implied a promising application prospect in future.
引文
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[15]YANG W F, HSING H J, YANG Y C, et al. The effects of selected parameters on the nitric oxide removal by biofilter[J]. Journal of Hazardous Materials, 2007, 148(3):653-659.
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[17]骆翼梦,李顺义,马宏业,等.杂色云芝生物滤塔净化甲苯废气效果[J].农业工程学报,2017, 33(12):218-223.
[18]朱亚中,李顺义,骆翼梦,等.基于包埋功能微生物的生物滤塔净化甲苯废气研究[J].郑州大学学报,2017, 38(4):12-16.
[19]陈建孟,王家德,唐翔宇.生物技术在有机废气处理中的研究进展[J].环境科学进展,1998, 6(3):30-36.
[20]HASSAN A A, SORIAL G A. Removal of benzene under acidic conditions in a controlled trickle bed air biofilter[J]. Journal of Hazardous Materials, 2010, 184(1):345-349.
[21]ZHU R, LI S, BAO X, et al. Comparison of biological H2S removal characteristics between a composite packing material with and without functional microorganisms[J]. Scientific Reports, 2017, 7:42241.
[2]RENE E R, MOHAMMAD B T, VEIGA M C, et al. Biodegradation of btex in a fungal biofilter:Influence of operational parameters, effect of shock-4oads and substrate stratification[J]. Bioresource Technology, 2012, 116(4):204-213.
[3]WANG J D, JIN S L, CHEN J M, et al. Performance evaluation of a slow-release composite media for biofiltration[J]. Scientia Sinica(Chimica), 2010, 40(12):1874-1879.
[4]CHEN Y, WANG X, HE S, et al. The performance of a two-4ayer biotrickling filter filled with new mixed packing materials for the removal of H2S from air[J]. Journal of Environmental Management, 2016, 165:11-46.
[5]DUMONT E, ANDRES Y. Evaluation of innovative packing materials for the biodegradation of H2S:A comparative study[J].Journal of Chemical Technology and Biotechnology, 2010, 85(3):429-434.
[6]王家德,金顺利,陈建孟,等.一种缓释复合生物填料性能评价[J].中国科学:化学,2010, 40(12):1874-4879.
[7]李顺义,朱仁成,张雅丽,等.一种包埋微生物复合填料的制备及性能评价[J].环境工程学报,2014, 8(1):260-265.
[8]ZHU R C, LI S Y, WU Z J, et al. Performance evaluation of a slow-release packing material-embedded functional microorganisms for biofiltration[J]. Environmental Technology, 2017, 38(8):945-955.
[9]朱刚利,胡勇有.不同材料包埋固定化厌氧氨氧化混培物[J].环境科学学报,2008, 28(9):1861-4866.
[10]CARBERY J B. Model of algal bacterial clay wastewater treatment system[J]. Water Science and Technology, 1992, 26(7/8):1697-1706.
[11]张长利,王景晶,杨宏.细胞固定化技术研究进展及其在水处理领域的应用[J].水处理技术,2013, 39(6):1-4.
[12]SINGH K, SINGH R S, RAI B N, et al. Biofiltration of toluene using wood charcoal as the biofilter media[J]. BioresourceTechnology, 2010, 101(11):3947-3951.
[13]THAM Y J, LATIF P A, ABDULLAH A M, et al. Performances of toluene removal by activated carbon derived from durian shell[J]. Bioresource Technology, 2011, 102(2):724-728.
[14]ESTRADA J M, HERNANDEZ S, MUNOZ R, et al. A comparative study of fungal and bacterial biofiltration treating a VOC mixture[J]. Journal of Hazardous Materials, 2013, 250-251(2):190-197.
[15]YANG W F, HSING H J, YANG Y C, et al. The effects of selected parameters on the nitric oxide removal by biofilter[J]. Journal of Hazardous Materials, 2007, 148(3):653-659.
[16]HERNANDEZ A C R,SUSA M S R,ANDRES Y, et al. Steady-and transient-state H2S biofiltration using expanded schist as packing material[J]. New Biotechnology, 2013, 30(2):210-218.
[17]骆翼梦,李顺义,马宏业,等.杂色云芝生物滤塔净化甲苯废气效果[J].农业工程学报,2017, 33(12):218-223.
[18]朱亚中,李顺义,骆翼梦,等.基于包埋功能微生物的生物滤塔净化甲苯废气研究[J].郑州大学学报,2017, 38(4):12-16.
[19]陈建孟,王家德,唐翔宇.生物技术在有机废气处理中的研究进展[J].环境科学进展,1998, 6(3):30-36.
[20]HASSAN A A, SORIAL G A. Removal of benzene under acidic conditions in a controlled trickle bed air biofilter[J]. Journal of Hazardous Materials, 2010, 184(1):345-349.
[21]ZHU R, LI S, BAO X, et al. Comparison of biological H2S removal characteristics between a composite packing material with and without functional microorganisms[J]. Scientific Reports, 2017, 7:42241.
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