|Table of Contents|

Effect of Influent Volumetric Loading on Extracellular Polymeric Substances

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2012年03期
Page:
545-550
Research Field:
Publishing date:

Info

Title:
Effect of Influent Volumetric Loading on Extracellular Polymeric Substances
Author(s):
ZHANG Lan-he12WANG Ying1MA Fang2LI Jun1WANG Xu-ming3
1.School of Chemical Engineering,Northeast Dianli University,Jilin 132012,China;2.State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China; 3.Beijing Agro-biotechnology Research Center,Beijing 100089,China
Keywords:
extracellular polymeric substances volumetric loading sewage treatment fluorescence analysis
PACS:
X703.1
DOI:
-
Abstract:
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/(m3·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/(m3·d),the concentrations of EPS,protein and polysaccharide are(89.52±0.46)mg/L,26.45~28.9 mg/L and(9.38±0.35)mg/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/(m3·d),the concentrations of EPS,protein and polysaccharide 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.

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Last Update: 2012-10-12