Candida tropicalis prompted effectively simultaneous removal of carbon, nitrogen and phosphorus in activated sludge reactor: microbial community succession and functional characteristics.
Candida tropicalis prompted effectively simultaneous removal of carbon, nitrogen and phosphorus in activated sludge reactor: microbial community succession and functional characteristics.
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DOI：
10.2139/ssrn.3990029
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发表时间：
2022-02
影响因子：
11.4
通讯作者：
Yuzhe He;Z. Song;Xiaoqi Dong;Qihang Zheng;Xingxing Peng;Xiao-shan Jia
中科院分区：
文献类型：
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作者：
Yuzhe He;Z. Song;Xiaoqi Dong;Qihang Zheng;Xingxing Peng;Xiao-shan Jia
分离出一株同时脱氮除磷、降解有机物的热带假丝酵母。在好氧条件下，接种了热带梭菌、活性污泥及其共存系统的3个连续搅拌槽反应器运行了150天。结果表明，在共生体系中接种热带镰刀菌可显著提高土壤对碳、氮、磷的去除效率。共存系统的碳、氮、磷去除效率分别提高了92%、73%和63%；生物量下降（从1200 mg/L降至500 mg/L）；以热带C.为优势菌株。传统的除氮和除磷微生物，如分枝杆菌、黄酮因子和Devsia的相对丰度在共存系统中增加。宏基因组分析表明，共存系统中PCYT2、EPT1和phnPP基因的存在以及更复杂的代谢途径可能是代谢过程更活跃的原因。
A new Candida tropicalis that simultaneously remove nitrogen and phosphorus, and degrade organic matters was isolated. Three continuous stirred tank reactors inoculated with C. tropicalis, activated sludge, and their co-existing system in aerobic condition were operated for 150 days. Results demonstrated that the inoculation of C. tropicalis in the co-existing system remarkably improved the carbon, nitrogen, and phosphorus removal efficiencies. The co-existing system had increased carbon, nitrogen, and phosphorus removal efficiencies (92%, 73%, and 63%, respectively); decreased biomass (reduced from 1200 mg/L to 500 mg/L); and C. tropicalis as the dominant strain. The relative abundance of traditional nitrogen- and phosphorus-removing microorganisms, such as Mycobacterium, Flavonifactor, and Devsia, increased in the co-existing system. Metagenomic analysis showed that the presence of the PCYT2, EPT1, and phnPP genes and more complexed metabolism pathways in the co-existing system might be responsible for the more activated metabolism process.