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用于处理低C/N比废水的生物载体制造的创新涂层蚀刻方法

Innovative Coating-Etching Method of Biocarrier Fabrication for Treating Wastewater with a Low C/N Ratio.

作者信息

Yu Ning, Zhang Daijun, Lei Yu, Wang Jianhui, Dong Yang, Chen Youpeng

机构信息

Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China.

University of Chinese Academy of Sciences, Beijing 100049, China.

出版信息

Polymers (Basel). 2022 Jul 25;14(15):3010. doi: 10.3390/polym14153010.

DOI:10.3390/polym14153010
PMID:35893972
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9330803/
Abstract

A novel method was used to fabricate the bio-carrier with both a high specific surface area and good compatibility. The results of monitoring the growth of biofilms at a low C/N ratio (0.83) showed that resulting carrier-PLA-cavity offered certain advantages for biofilm growth by providing an appropriate microenvironment for bacterial growth in wastewater treatment. The biofilm on carrier-PLA-cavity grew and updated faster than the naked-carrier. The biomass and thickness of biofilms growing on carrier-PLA-cavity were 10 kg/m and 500 μm, respectively. From the wastewater tests, 90% of the total nitrogen was removed via simultaneous nitrification and denitrification (SND) by the biofilm biomass attached to carrier-PLA-cavity, compared to 68% for the naked-carrier. The COD removal efficiency values of the carrier-PLA-cavity and naked-carrier were 94% and 86%, respectively. The microbial community analysis of carrier biofilms showed that was the most abundant genus, and heterotrophic nitrification and denitrification were responsible for nitrogen removal in both reactors. Notably, this method does not require any complicated equipment or structural design. This novel method might be a promising strategy for fabricating biocarriers for treating wastewater with a low C/N ratio.

摘要

一种新方法被用于制造具有高比表面积和良好兼容性的生物载体。在低C/N比（0.83）下监测生物膜生长的结果表明，所得的载体-PLA-腔体通过为废水处理中的细菌生长提供合适的微环境，为生物膜生长提供了一定优势。载体-PLA-腔体上的生物膜比裸载体上的生长和更新得更快。在载体-PLA-腔体上生长的生物膜的生物量和厚度分别为10 kg/m和500μm。从废水测试来看，附着在载体-PLA-腔体上的生物膜生物量通过同步硝化反硝化（SND）去除了总氮的90%，而裸载体的这一比例为68%。载体-PLA-腔体和裸载体的COD去除效率值分别为94%和86%。载体生物膜的微生物群落分析表明， 是最丰富的属，并且异养硝化和反硝化作用在两个反应器中均负责氮的去除。值得注意的是，该方法不需要任何复杂的设备或结构设计。这种新方法可能是制造用于处理低C/N比废水的生物载体的一种有前景的策略。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/674557b52a10/polymers-14-03010-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/91f05cda8404/polymers-14-03010-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/b5d9c7426df9/polymers-14-03010-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/6bb5c4ad64b3/polymers-14-03010-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/6813fb6f72b1/polymers-14-03010-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/8131912ff673/polymers-14-03010-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/2a451aaccf96/polymers-14-03010-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/3f3619ce72c6/polymers-14-03010-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/96526a78b340/polymers-14-03010-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/86e167cb2070/polymers-14-03010-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/314526fc17ad/polymers-14-03010-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/11c8ead0c07a/polymers-14-03010-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/f564b67405f2/polymers-14-03010-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/5dbdefc51f40/polymers-14-03010-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/674557b52a10/polymers-14-03010-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/91f05cda8404/polymers-14-03010-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/b5d9c7426df9/polymers-14-03010-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/6bb5c4ad64b3/polymers-14-03010-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/6813fb6f72b1/polymers-14-03010-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/8131912ff673/polymers-14-03010-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/2a451aaccf96/polymers-14-03010-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/3f3619ce72c6/polymers-14-03010-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/96526a78b340/polymers-14-03010-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/86e167cb2070/polymers-14-03010-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/314526fc17ad/polymers-14-03010-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/11c8ead0c07a/polymers-14-03010-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/f564b67405f2/polymers-14-03010-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/5dbdefc51f40/polymers-14-03010-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2afb/9330803/674557b52a10/polymers-14-03010-g014.jpg

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