Effect of acetate to glycerol ratio on enhanced biological phosphorus removal
Effect of acetate to glycerol ratio on enhanced biological phosphorus removal
复制标题
乙酸与甘油比例对强化生物除磷的影响
DOI：
10.1016/j.chemosphere.2017.12.167
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发表时间：
2018
期刊：
影响因子：
8.8
通讯作者：
Li Hailong
中科院分区：
文献类型：
--
作者：
Yang Guojing;Wang Dongbo;Yang Qi;Zhao Jianwei;Liu Yiwen;Wang Qilin;Zeng Guangming;Li Xiaoming;Li Hailong
强化生物除磷(EBPR)是一种可持续发展的污水除磷技术。然而，由于进水碳源不足，该技术的效率往往被打折扣。在这项工作中，评估了乙酸甘油比例对EBPR性能的影响。实验结果表明，当乙酸甘油的比例从100/0%降至50/50%时，EBPR效率从90.2%提高到96.2%。进一步将醋酸甘油比降至0/100%时，EBPR的效率降至30.5%。荧光原位杂交分析表明，适当增加甘油有利于提高聚磷菌的相对丰度。进一步的研究发现，适量的甘油增加了聚羟基烷酸酯的合成量，从而为后续的氧化相生成了足够的能量供氧奢侈的磷。
Enhanced biological phosphorus removal (EBPR) is a sustainable and promising technology for phosphorus removal from wastewater. The efficiency of this technology, however, is often discounted due to the insufficient carbon sources in influent. In this work, the effect of acetate to glycerol ratio on the EBPR performance was evaluated. The experimental results showed when the ratio of acetate to glycerol decreased from 100/0% to 50/50%, the EBPR efficiency increased from 90.2% to 96.2%. Further decrease of acetate to glycerol ratio to 0/100% decreased the efficiency of EBPR to 30.5%. Fluorescencein situhybridization analysis demonstrated appropriate increase of glycerol benefited to increase the relative abundance of phosphate accumulating organisms. Further investigation revealed the proper addition of glycerol increased the amount of polyhydroxyalkanoates synthesis, and then produced sufficient energy for oxic luxury phosphorus in the subsequent oxic phase.