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Open AccessArticle

Shift of Sediments Bacterial Community in the Black-Odor Urban River during In Situ Remediation by Comprehensive Measures

1
College of Environmental Science & Engineering, Yangzhou University, Yangzhou 225100, China
2
Runsheng Environmental Technology (Guangzhou) Co., Ltd., Guangzhou 510006, China
3
Huihong Environmental Technology (Jiangsu) Co., Ltd., Yangzhou 225100, China
*
Author to whom correspondence should be addressed.
Water 2019, 11(10), 2129; https://doi.org/10.3390/w11102129
Received: 31 August 2019 / Revised: 1 October 2019 / Accepted: 10 October 2019 / Published: 14 October 2019
(This article belongs to the Section Urban Water Management)
The phenomenon of black-odor urban rivers with rapid urbanization has attracted extensive attention. In this study, we investigated the water quality and composition of sediment-associated bacteria communities in three remediation stages (before remediation, 30 days after remediation, and 90 days after remediation) based on the in situ remediation using comprehensive measures (physical, chemical, and biological measures). The results show that the overlying water quality was notably improved after in situ remediation, while the diversity and richness of sediment-associated bacterial communities decreased. A growing trend of some dominant genus was observed following the remediation of a black-odor river, such as Halomonas, Pseudomonas, Decarbonamis, Leptolina, Longilina, Caldiseericum, Smithella, Mesotoga, Truepera, and Ralstonia, which play an important role in the removal of nitrogen, organic pollutants and hydrogen sulfide (H2S) during the sediment remediation. Redundancy analysis (RDA) showed that the bacterial community succession may accelerate the transformation of organic pollutants into inorganic salts in the sediment after in situ remediation. In a word, the water quality of the black-odor river was obviously improved after in situ remediation, and the bacterial community in the sediment notably changed, which determines the nutrients environment in the sediment. View Full-Text
Keywords: black-odor urban rivers; in situ remediation; water quality; sediment bacterial community black-odor urban rivers; in situ remediation; water quality; sediment bacterial community
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MDPI and ACS Style

Zhang, J.; Tang, Y.; Kou, Z.; Teng, X.; Cai, W.; Hu, J. Shift of Sediments Bacterial Community in the Black-Odor Urban River during In Situ Remediation by Comprehensive Measures. Water 2019, 11, 2129.

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