基质类型改变对絮体物化特征的短期影响  

Short-term effect of substrate change on physicochemical characteristics of flocs

作　　者：李志华[1,2] 樊龙[1,2] 姚佩[1,2] 刘焕[1,2] 余科[1,2] 

机构地区：[1]西北水资源与环境生态教育部重点实验室,西安710055 [2]西安建筑科技大学环境与市政工程学院,西安710055

出　　处：《环境工程学报》2016年第7期3629-3633,共5页Chinese Journal of Environmental Engineering

基　　金：陕西省科技计划国际合作项目(2013KW2201);2013年博士点基金联合资助课题(20136120110002)

摘　　要：通过对不同类型的污泥絮体进行短期人工驯化,监测其不同状态的密度,沉降性,呼吸图谱以及EPS荧光光谱的变化情况,讨论基质类型改变对絮体结构影响特性。结果表明,通过基质的选择,可在短期内改变絮体的密度,且异养菌的活性对于絮体结构在短期内的改善起关键作用。而在此过程中,EPS的荧光峰呈现与消失及其强度变化与絮体结构的改变关联性不大。Different types of sludge were cultivated using an artificial substrate,while also investigating the effect of different types of substrate on floc structure as measured by density,ability to settle,respirogram analysis and the fluorescence spectra of extra polysaccharide（ EPS）. Results show that floc density can be controlled over short term by substrate selection,with the activity of heterotrophic bacteria being the key factor. However,neither the existence of fluorescence peaks of EPS nor their strength are associated with variations of floc structure.

关 键 词：絮体结构 污泥密度 呼吸图谱 胞外聚合物 

分 类 号：X703[环境科学与工程—环境工程]