养殖废水中Fe3+累积对藻菌共生体EPS分泌及膜污染特征的影响

X713; 通过在养殖废水中分别投加不同浓度的Fe3+进行藻菌共生体的培养,探究Fe3+对藻菌共生体胞外聚合物(EPS)分泌的影响,并将提取的EPS各组分拆分,结合膜污染测试实验考察藻菌共生体混合液和其各组分导致的膜污染特征变化情况.实验结果表明,Fe3+的加入通过影响EPS各组分的含量可有效减缓膜污染,在其投加质量浓度为150 mg/L时,膜污染最轻.采用Hermia经典模型对膜通量衰减过程进行拟合分析,结果发现,滤饼层的形成是膜污染形成的主要原因之一,此外Fe3+增加会引起微生物絮体粒径变化,进而对膜污染产生显著影响.膜面污染物成分分析发现,其主要组成成分为色氨酸类蛋白质、酪氨酸类蛋白质和...

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Published in工业水处理 Vol. 44; no. 10; pp. 60 - 67
Main Authors 田茂芝, 丁梓尧, 孙晨, 周玮钰, 王圣智, 万瀚宇, 李昆
Format Journal Article
LanguageChinese
Published 南昌大学资源与环境学院,鄱阳湖环境与资源利用教育部重点实验室,江西南昌 330031 2024
Subjects
membrane fouling
藻菌共生体
microalgae-bacteria symbionts
Fe3
胞外聚合物
swine wastewater
养殖废水
extracellular polymeric substances
膜污染
Online AccessGet full text
ISSN1005-829X
DOI10.19965/j.cnki.iwt.2023-1003

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Abstract X713; 通过在养殖废水中分别投加不同浓度的Fe3+进行藻菌共生体的培养,探究Fe3+对藻菌共生体胞外聚合物(EPS)分泌的影响,并将提取的EPS各组分拆分,结合膜污染测试实验考察藻菌共生体混合液和其各组分导致的膜污染特征变化情况.实验结果表明,Fe3+的加入通过影响EPS各组分的含量可有效减缓膜污染,在其投加质量浓度为150 mg/L时,膜污染最轻.采用Hermia经典模型对膜通量衰减过程进行拟合分析,结果发现,滤饼层的形成是膜污染形成的主要原因之一,此外Fe3+增加会引起微生物絮体粒径变化,进而对膜污染产生显著影响.膜面污染物成分分析发现,其主要组成成分为色氨酸类蛋白质、酪氨酸类蛋白质和微生物代谢副产物.
AbstractList X713; 通过在养殖废水中分别投加不同浓度的Fe3+进行藻菌共生体的培养,探究Fe3+对藻菌共生体胞外聚合物(EPS)分泌的影响,并将提取的EPS各组分拆分,结合膜污染测试实验考察藻菌共生体混合液和其各组分导致的膜污染特征变化情况.实验结果表明,Fe3+的加入通过影响EPS各组分的含量可有效减缓膜污染,在其投加质量浓度为150 mg/L时,膜污染最轻.采用Hermia经典模型对膜通量衰减过程进行拟合分析,结果发现,滤饼层的形成是膜污染形成的主要原因之一,此外Fe3+增加会引起微生物絮体粒径变化,进而对膜污染产生显著影响.膜面污染物成分分析发现,其主要组成成分为色氨酸类蛋白质、酪氨酸类蛋白质和微生物代谢副产物.
Abstract_FL By cultivating microalgae-bacteria consortia in breeding wastewater with varying concentrations of Fe3+,this study investigated the impact of Fe3+on the secretion of extracellular polymeric substances(EPS)by the consortia.The ex-tracted EPS components were fractionated,and membrane fouling tests were conducted to examine the changes in mem-brane fouling characteristics by the microalgae-bacteria mixed liquor and each component.The experimental results indi-cated that the addition of Fe3+effectively mitigated membrane fouling,with the least fouling observed at iron mass concen-tration of 150 mg/L.The Hermia classic model was used to fit and analyze the membrane flux attenuation process.The re-sults showed that the formation of the filter cake layer was one of the main causes of membrane fouling.In addition,an in-crease of Fe3+would cause changes in the particle size of microbial flocs,which would have a significant impact on mem-brane fouling.Analysis of the membrane surface foulants showed that the main components were tryptophan-like proteins,tyrosine-like proteins,and microbial metabolic by-products.
Author 周玮钰
田茂芝
丁梓尧
孙晨
李昆
万瀚宇
王圣智
AuthorAffiliation 南昌大学资源与环境学院,鄱阳湖环境与资源利用教育部重点实验室,江西南昌 330031
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Author_FL TIAN Maozhi
WANG Shengzhi
SUN Chen
LI Kun
WAN Hanyu
DING Ziyao
ZHOU Weiyu
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  fullname: 李昆
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Keywords membrane fouling
藻菌共生体
microalgae-bacteria symbionts
Fe3
胞外聚合物
swine wastewater
养殖废水
extracellular polymeric substances
膜污染
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Title 养殖废水中Fe3+累积对藻菌共生体EPS分泌及膜污染特征的影响
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