渐增NaCl对印染废水处理系统活性污泥微生物的影响
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摘要
为了阐明在印染废水循环过程中积累的无机盐对生物处理系统的影响,本研究通过NaCl渐增实验研究了印染废水处理系统中活性污泥微生物的耐盐特性,并采用Biolog技术研究了Na Cl浓度逐渐升高过程中活性污泥微生物的代谢特征和多样性变化。结果表明,进水NaCl浓度逐渐升高会减少微生物的多样性,抑制微生物的活性,削弱其对酸类和酯类的利用能力。
To expound the influences of inorganic salts accumulated in the process of dyeing wastewater circulationon the biological treatment system,the salt-tolerant characteristic of activated sludge microbes in dyeing wastewatertreatment systems have been studied through Na Cl gradual-increase tests. Metabolic characteristics and microbialdiversity of activated sludge microbes in the gradual-increase process of Na Cl concentration are also studied byBiolog technology. The results show that the gradual increase of influent Na Cl concentration could decrease thediversity of microbes,inhibit microbial activity,and weaken the capability for utilizing acids and esters.
To expound the influences of inorganic salts accumulated in the process of dyeing wastewater circulationon the biological treatment system,the salt-tolerant characteristic of activated sludge microbes in dyeing wastewatertreatment systems have been studied through Na Cl gradual-increase tests. Metabolic characteristics and microbialdiversity of activated sludge microbes in the gradual-increase process of Na Cl concentration are also studied byBiolog technology. The results show that the gradual increase of influent Na Cl concentration could decrease thediversity of microbes,inhibit microbial activity,and weaken the capability for utilizing acids and esters.
引文
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[2]魏娜,张雁秋,季凯.膜分离技术在印染废水回用中的研究和应用[J].净水技术,2009,28(5):1-5.
[3]于德爽,李津,陆婕.MBR工艺处理含盐污水的试验研究[J].中国给水排水,2008,24(3):5-8.
[4]李玲玲,郑西来,李梅.盐度对活性污泥硝化功能的影响[J].环境污染与防治,2008,30(1):48-51.
[5]李彬,王志伟,安莹,等.盐度对膜-生物反应器污泥表观硝化速率的抑制机理[J].中国环境科学,2014,34(2):371-377.
[6]Rene E R,Kim S J,Park H S.Effect of COD/N ratio and salinity on the performance of sequencing batch reactors[J].Bioreesource Technology,2008,99(4):839-846.
[7]国家环境保护总局.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002:211-279.
[8]Chen Zhen,Wang Xiaoke,Feng Zhaozhong,et al.Impact of elevated O3on soil microbial community function under wheat crop[J].Water Air&Soil Pollution,2009,198(1):189-198.
[9]Smalla K,Wachtendorf U T E,Heuer H,et al.Analysis of BIOLOG GN substrate utilization patterns by microbial communities[J].Applied and Environmental Microbiology,1998,64(4):1220-1225.
[10]Hacck S K,Garchow H,Klug M J,et al.Analysis of factors affecting the accuracy,reproducibility,and interpretation of microbial community carbon source utilization patterns[J].Applied and Environmental Microbiology,1995,61(4):1458-1468.
[11]张彬彬,田凤蓉,杨志林,等.Na Cl盐度波动对处于污泥膨胀的耐盐脱氮污泥沉降性能的影响[J].环境工程学报,2014,8(4):1491-1496.
[12]Elfstrand S,Hedlund K,M?rtensson A.Soil enzyme activities,microbial community composition and function after 47 years of continuous green manuring[J].Applied Soil Ecology,2007,35(3):610-621.
[13]Garland J L,Mills A L.Classification and characterization of heterotrophic microbial communities on the basis of patterns of community-level sole-carbon-source utilization[J].Applied and Environmental Microbiology,1991,57(8):2351-2359.