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Article

Biological Reduction of Organic Matter in Buji River Sediment (Shenzhen, China) with Artificial Oxygenation

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Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
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Key Laboratory of Low-Grade Energy Utilization Technologies and Systems of Ministry of Education, School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China
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Educational Science Research Institute of Futian, Shenzhen 518000, China
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Centre for Technology in Water and Wastewater Treatment, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney 2007, Australia
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Authors to whom correspondence should be addressed.
Water 2020, 12(12), 3592; https://doi.org/10.3390/w12123592
Received: 31 October 2020 / Revised: 15 December 2020 / Accepted: 18 December 2020 / Published: 21 December 2020
(This article belongs to the Section Biodiversity and Functionality of Aquatic Ecosystems)
In this work, artificial oxygenation treatment (pure oxygen aeration or oxygen enriched water injection) combined with the introduction of exogenous microorganisms was employed to purify urban river sediment for the first time. Results showed that the developed in situ remediation strategy could increase the dissolved oxygen (DO) concentration and oxidation-reduction potential (ORP) value of the sediments. Benefiting from the increase of DO concentration, the bacterial diversity was enhanced. The highest removal efficiencies of organic matter were 18.4% and 22.3% through pure oxygen aeration and oxygen enriched water injection, respectively. More importantly, overlying water quality was not affected. By comparison, oxygen enriched water injection treatment could achieve better performance on sediment purification. Introducing exogenous microorganisms further reduced the organic matter content of the sediment. In short, the current work not only proposed a promising strategy for controlling urban river sediment pollution, but also provided novel insight for the understanding of river sediment containing highly concentrated organic matter. View Full-Text
Keywords: river sediment; dissolved oxygen; oxygenation; biological reduction; organic pollutant river sediment; dissolved oxygen; oxygenation; biological reduction; organic pollutant
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MDPI and ACS Style

Che, L.; Jin, W.; Zhou, X.; Cao, C.; Han, W.; Qin, C.; Tu, R.; Chen, Y.; Feng, X.; Wang, Q. Biological Reduction of Organic Matter in Buji River Sediment (Shenzhen, China) with Artificial Oxygenation. Water 2020, 12, 3592. https://doi.org/10.3390/w12123592

AMA Style

Che L, Jin W, Zhou X, Cao C, Han W, Qin C, Tu R, Chen Y, Feng X, Wang Q. Biological Reduction of Organic Matter in Buji River Sediment (Shenzhen, China) with Artificial Oxygenation. Water. 2020; 12(12):3592. https://doi.org/10.3390/w12123592

Chicago/Turabian Style

Che, Lin, Wenbiao Jin, Xu Zhou, Chenbo Cao, Wei Han, Changlei Qin, Renjie Tu, Yidi Chen, Xiaochi Feng, and Qilin Wang. 2020. "Biological Reduction of Organic Matter in Buji River Sediment (Shenzhen, China) with Artificial Oxygenation" Water 12, no. 12: 3592. https://doi.org/10.3390/w12123592

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