进水容积负荷对胞外聚合物的影响  

Effect of Influent Volumetric Loading on Extracellular Polymeric Substances

作　　者：张兰河[1,2] 王莹[1] 马放[2] 李军[1] 王旭明[3] 

机构地区：[1]东北电力大学化学工程学院,吉林吉林132012 [2]哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090 [3]北京农业生物技术研究中心,北京100089

出　　处：《南京理工大学学报》2012年第3期545-550,共6页Journal of Nanjing University of Science and Technology

基　　金：城市水资源与水环境国家重点实验室开放基金(QA201013);吉林省科技发展计划社会发展重点项目(20110405);吉林省教育厅'十二五'科学技术研究项目(2012-95);吉林市科技计划项目(201132402)

摘　　要：为了提高污水处理的效率,利用序批式活性污泥工艺考察进水容积负荷对胞外聚合物(EPS)的影响。采用Jasco FP-6500三维荧光光度计对EPS进行了荧光分析。结果表明,在进水容积负荷为8.63 kg COD/(m3.d)时,EPS质量浓度为75～80 mg/L,通过三维荧光光谱分析得到两条独立清晰的类蛋白荧光吸收峰。当进水容积负荷为18.5 kg COD/(m3.d)时,EPS质量浓度为(89.52±0.46)mg/L,蛋白质质量浓度为26.45～28.9 mg/L,多糖质量浓度为(9.38±0.35)mg/L,荧光峰强度显著增加。高容积负荷导致EPS质量浓度增加,组分未发生变化。当进水容积负荷为3.73 kg COD/(m3.d)时,EPS质量浓度为(69.8±1)mg/L,蛋白质质量浓度为22.02～29.05 mg/L,多糖质量浓度为(5.34±0.6)mg/L,荧光峰强度减弱。低进水容积负荷导致EPS质量浓度较低。To improve the efficiency of sewage treatment, the effect of influent volumetric loading on the extracellular polymeric substances （EPS）of sludge is investigated using a sequencing batch reactor activated sludge process. The fluorescence analysis of EPS is proceeded using a three- dimensional fluorescence spectrum（Jasco FP-6500）. The results show that the EPS concentration is 70 - 80 mg,/L when the influent volumetric loading is 8.63 kg COD/（ m^3· d） , and two clear protein- like fluorescence absorption peaks are observed using the three-dimensional fluorescence spectrum analysis. When the influent volumetric loading is 18.5 kg COD/（ m^3· d） ,the concentrations of EPS, protein and polysaeeharide are（89.52±0.46）mg/L,26.45 -28.9 mg/L and（9.38±0.35 ）rag/L, respectively, and the strength of fluorescence peaks increases obviously. Higher volumetric loading leads to higher EPS concentration, and the composition of EPS is not changed. When the influence volumetric loading is 3.73 kg COD/（ m^3·d）, the concentrations of EPS, protein and polysaceharide are （69.8± 1 ） mg/L, 22.02 - 29.05 mg,/L and （ 5.34±0.6 ） mg/L, respectively, and the strength of fluorescence peaks is weak. Lower influent volumetric loading leads to lower EPS concentration.

关 键 词：胞外聚合物 容积负荷 污水处理 荧光分析 

分 类 号：X703.1[环境科学与工程—环境工程]