Effects of polyaluminium chloride addition on community structures of polyphosphate and glycogen accumulating organisms in biological phosphorus removal (BPR) systems.
Effects of polyaluminium chloride addition on community structures of polyphosphate and glycogen accumulating organisms in biological phosphorus removal (BPR) systems.
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DOI：
10.1016/j.biortech.2019.122431
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发表时间：
2019-11
影响因子：
11.4
通讯作者：
Baogui Wang;W. Zeng;Z. Fan;Chunyan Wang;Qingan Meng;Yongzhen Peng
中科院分区：
文献类型：
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作者：
Baogui Wang;W. Zeng;Z. Fan;Chunyan Wang;Qingan Meng;Yongzhen Peng
将聚合氯化铝(PAC)投加到生物除磷(BPR)系统中，考察聚磷菌和聚糖原聚合菌(PAO和GaOS)的数量。当Al：P为1：1时，典型的BPR表现为典型的BPR，而当Al：P为4：1时，BPR几乎消失。即使在高PAC加入量的情况下，体系中仍存在PAO。与不添加PAC的BPR相比，添加PAC后，Acumulibacter、Tetrasphaera和Commnadaceae的相对丰度略有增加。十氯单胞菌的相对丰度从0.87%提高到3.82%，成为最主要的多氯单胞菌。Acumulibacter和Tetrasphaera的结构变化不大，而十氯单胞菌和Comamonadaceae的结构发生了显著的变化。对于GaOS，竞争杆菌和链球菌属的相对丰度显著下降。此外，PAC的投加有效地抑制了丝状菌的增殖，显示了其抑制污泥丝状菌膨胀的潜力。该研究为除磷工艺和运行条件的选择提供了指导。
Polyaluminium chloride (PAC) was added into the biological phosphorus removal (BPR) systems to investigate the populations of polyphosphate and glycogen accumulating organisms (PAOs and GAOs). Typical BPR performed under Al:P of 1:1, while BPR almost disappeared at Al:P of 4:1. Even with high PAC addition, PAOs still existed in systems. Compared to the BPR with no PAC addition, the relative abundance of Accumulibacter, Tetrasphaera and Commnadaceae slightly increased with PAC addition. The relative abundance of Dechloromonas was improved from 0.87% to 3.82%, becoming the most dominant PAOs. The specific structures of Accumulibacter and Tetrasphaera changed little, but that of Dechloromonas and Comamonadaceae significantly altered. Regarding the GAOs, the relative abundance of Competibacter and Defluviicoccus significantly declined. Additionally, PAC addition effectively inhibited the proliferation of filamentous bacteria, indicating its potential in inhibiting the sludge filamentous bulking. This study provided guidance for the selection of the phosphorus removal process and operational conditions.