Effects of different ratios of glucose to acetate on phosphorus removal and microbial community of enhanced biological phosphorus removal (EBPR) system
Effects of different ratios of glucose to acetate on phosphorus removal and microbial community of enhanced biological phosphorus removal (EBPR) system
复制标题
不同葡萄糖与醋酸比例对强化生物除磷（EBPR）系统除磷及微生物群落的影响
DOI：
10.1007/s11356-016-7860-1
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发表时间：
2017-02-01
影响因子：
5.8
通讯作者：
Zeng, Guangming
中科院分区：
文献类型：
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作者：
Xie, Ting;Mo, Chuangrong;Zeng, Guangming
研究了不同葡萄糖和醋酸比对强化生物除磷(EBPR)的影响，考察了胞间多羟基烷酸(PHAs)、糖原和微生物群落的变化。试验在5个序批式反应器(SBR)中进行，分别以0：100%、25：75%、50：50%、75：25%和100：0%的葡萄糖和/或醋酸盐为碳源。实验结果表明，当葡萄糖和醋酸盐的比例为50：50%时，除磷效率最高，达到96.3%，这归因于厌氧条件下反应器内糖原和聚羟基戊酸酯(PHV)转化较多。对不同厌氧/好氧(A/O)SBR的污泥样品进行了聚合酶链式反应-变性梯度凝胶电泳(DGGE)分析，结果表明，不同厌氧/好氧(A/O)SBR的污泥微生物群落结构明显不同，相似性较低。
In this study, the effects of different ratios of glucose to acetate on enhanced biological phosphorus removal (EBPR) were investigated with regard to the changes of intercellular polyhydroxyalkanoates (PHAs) and glycogen, as well as microbial community. The experiments were carried out in five sequencing batch reactors (SBRs) fed with glucose and/or acetate as carbon sources at the ratios of 0: 100 %, 25: 75 %, 50: 50 %, 75: 25 %, and 100: 0 %. The experimental results showed that a highest phosphorus removal efficiency of 96.3 % was obtained with a mixture of glucose and acetate at the ratio of 50: 50 %, which should be attributed to more glycogen and polyhydroxyvalerate (PHV) transformation in this reactor during the anaerobic condition. PCR-denaturing gradient gel electrophoresis (DGGE) analysis of sludge samples taken from different anaerobic/aerobic (A/O) SBRs revealed that microbial community structures were distinctively different with a low similarity between each other.