SMP与EPS分子质量分布对污泥可滤性的影响

发布时间：2018-05-14 14:33

本文选题：膜生物反应器 + 膜污染　；参考：《中国给水排水》2016年17期

【摘要】：采用脱氮除磷膜生物反应器(UCT-MBR)工艺处理冀南地区市政污水,考察了不同污泥龄(SRT)条件下(SRT由10 d增加至45 d)膜池污泥溶解性微生物产物(SMP)与胞外聚合物(EPS)的分子质量(MW)分布特性对污泥可滤性的影响,并采用SPSS软件对SMP、EPS的不同分子质量组分与污泥可滤性的相关性进行了深入分析。结果表明:SMP、EPS的糖类与蛋白类组分呈双峰式分布,以MW1 ku与100 ku的为主,并且随着SRT的延长呈增加的趋势;SPSS相关性及偏相关分析结果显示,SMP中MW100 ku的糖类组分(SMPc100 ku)浓度对总修正污染指数(TMFI)的影响最大,且呈现良好的线性正相关性,可将其作为污泥可滤性的指示因子;同时SMP中MW1 ku的糖类组分(SMP_(c1 ku))浓度、EPS中MW100 ku的糖类组分(EPS_(c100 ku))浓度分别对MFI_(sol)、MFI_(ss)的影响最大,可以分别作为两者的指示因子。
[Abstract]:UCT-MBR process was used to treat municipal wastewater in southern Hebei. The effects of molecular weight (MW) distribution characteristics of soluble microbial products (SMPs) and extracellular polymer (EPSs) on the filterability of sludge were investigated under different sludge age (SRT) conditions, which were increased from 10 days to 45 days. The correlation between the different molecular weight components of SMPN EPS and the filter ability of sludge was analyzed by SPSS software. The results showed that the carbohydrate and protein components of MW1 were distributed in a bimodal pattern, mainly in MW1 ku and 100ku. With the prolongation of SRT, the correlation and partial correlation analysis showed that the concentration of SMPc100ku) of MW100 ku had the greatest effect on the total modified pollution index (TMFI), and showed a good linear positive correlation. At the same time, the concentration of MW1 ku in SMP and the sugar component of MW100 ku in MW100 have the greatest influence on the MFI _ I _ S _ I _ I _ (s), which can be used as the indication factors for each of them.
【作者单位】：河北工程大学研究部;河北工程大学城市建设学院;北京工业大学建筑工程学院;
【基金】：河北省高等学校科学研究项目(QN2015115) 河北省自然科学基金资助项目(E2016402017)
【分类号】：X703

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