| 有机负荷对污泥胞外聚合物(EPS)分泌特性及信号分子释放差异的影响 |
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| 引用本文： | 李亚静,王少坡,刘璐,贾丽媛. 有机负荷对污泥胞外聚合物(EPS)分泌特性及信号分子释放差异的影响[J]. 环境工程, 2022, 40(2): 47-52. DOI: 10.13205/j.hjgc.202202008 |
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| 作者姓名： | 李亚静 王少坡 刘璐 贾丽媛 |
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| 作者单位： | 1. 天津城建大学 环境与市政工程学院, 天津 300384; |
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| 基金项目： | 国家自然科学基金;天津市自然科学基金重点项目;天津市教委科研项目 |
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| 摘 要： | 考察了连续流A2/O系统在3个有机负荷[0.29,0.58,1.16 kg COD/(m3·d)]条件下,胞外聚合物(EPS)分泌特性及信号分子(AHLs)的释放差异.结果表明:TB-EPS是污泥系统中EPS主要成分,TB-EPS组分具有较高的分子量,且分子量分布更广.有机负荷对LB-EPS各组分的影响大于TB-EPS...
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| 关 键 词： | 有机负荷 沉降性 脱氮除磷 胞外聚合物 信号分子 |
| 收稿时间： | 2021-03-19 |
SECRETORY CHARACTERISTICS OF EPS AND THE SIGNAL MOLECULES RELEASE UNDER DIFFERENT ORGANIC LOADING |
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| LI Yajing,WANG Shaopo,LIU Lu,JIA Liyuan. SECRETORY CHARACTERISTICS OF EPS AND THE SIGNAL MOLECULES RELEASE UNDER DIFFERENT ORGANIC LOADING[J]. Environmental Engineering, 2022, 40(2): 47-52. DOI: 10.13205/j.hjgc.202202008 |
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| Authors: | LI Yajing WANG Shaopo LIU Lu JIA Liyuan |
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| Affiliation: | 1. School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China;2. Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin 300384, China;3. Tianjin IKWEN Water Treatment Co., Ltd, Tianjin 300000, China |
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| Abstract: | The secretion characteristics of extracellular polymers(EPS) and the release of acylated homoserine lactones(AHLs) were investigated under three organic loading conditions [0.29, 0.58, 1.16 kg COD/(m3·d)] in continuous flow A2/O system. The results showed that TB-EPS was the main component of EPS, which had higher molecular weight and wider molecular weight distribution. The effect of organic loading on the components of LB-EPS was greater than that of TB-EPS. The increasing trend of polysaccharide(PS) content in LB-EPS was more obvious than that of protein(PN) with the increase of organic loading, making the sludge system have stronger settling property under high organic loading. The content and species of AHLs under different organic loads were significantly different. C10-HSL, C12-HSL and C14-HSL were dominant in sludge system. The correlation between AHLs and LB-EPS was weak, and there were significant or strong correlations between many types of AHLs and TB-EPS, which provided theoretical support for AHLs regulating EPS synthesis to achieve stable operation of the system. |
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