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Removal of triclosan during wastewater treatment process and sewage sludge composting-A case study in the middle reaches of the Yellow River
Zheng, Guodi1,2; Yu, Bao1,2; Wang, Yuewei1,2; Ma, Chuang3; Chen, Tongbin1,2
2020
Source PublicationENVIRONMENT INTERNATIONAL
ISSN0160-4120
Volume134Pages:9
Corresponding AuthorZheng, Guodi(zhenggd@igsnrr.ac.cn)
AbstractTriclosan (TCS) is widely used as an antibacterial disinfectant in personal care products, especially in rapidly-urbanizing countries, such as China. Almost all TCS enters wastewater treatment plants (WWTPs), but the fate of the TCS in the WWTPs is unclear. TCS may be present in sewage sludge or in effluent, and the discharge of TCS into an ecosystem can pose environmental risks. In the present study, influent, effluent, and sewage sludge were collected from four typical urban WWTPs, and the fate of TCS in the plants was investigated. The study was conducted in Zhengzhou, a city in the middle reaches of the Yellow River in China. The sewage sludge was used for aerobic composting to study the influences of different ventilation treatments on the biodegradation effects of TCS and the changes in the microbial community during the composting process. The results showed that the mean concentration of TCS in the influent of the four typical WWTPs was 397.1 ng/L. The mean level of TCS in the effluent was 8.0 ng/L. The mean concentration of TCS in the sewage sludge was 814.4 ng/g. For the four WWTPs, the percentages of TCS removal were 97.6% (Nansanhuan), 97.6% (Xinzheng), 98.8% (Wulongkou), and 97.9% (Chenyu), respectively. The sewage sludge enrichment rates for TCS ranged between 36.4% and 49%. Therefore, there is a need to focus on the environmental risks from sewage sludge. During aerobic composting, the TCS was effectively degraded under three ventilation strategies. Thus, improved ventilation could enhance the degradation rate of TCS. Moreover, TCS degradation occurred in the mesophilic period and in the early stage of the thermophilic phase period. Finally, the degradation rates of TCS in sewage sludge samples composted with low-, medium-, and high-ventilation treatments were 48.1%, 59.0%, and 59.5%, respectively. Thus, high ventilation could provide enough oxygen for the pile and enhanced microorganism activity, benefiting the degradation of TCS. In addition, the microbial communities change during the composting process, and a diversity index of the changes can help explain the composting process.
KeywordTriclosan Biodegradation Sewage sludge Compost Aeration
DOI10.1016/j.envint.2019.105300
WOS KeywordAMMONIA-OXIDIZING BACTERIA ; PERSONAL CARE PRODUCTS ; TRANSFORMATION PRODUCTS ; ARTIFICIAL SWEETENERS ; MICROBIAL COMMUNITY ; TREATMENT PLANTS ; TRICLOCARBAN ; FATE ; DEGRADATION ; PHARMACEUTICALS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41371455] ; National Natural Science Foundation of China[41101463] ; National Science and Technology Major Project[2016ZX05040002-005-001]
Funding OrganizationNational Natural Science Foundation of China ; National Science and Technology Major Project
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000501344500072
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/130808
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZheng, Guodi
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Ctr Environm Remediat, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Zhengzhou Univ Light Ind, Dept Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China
Recommended Citation
GB/T 7714
Zheng, Guodi,Yu, Bao,Wang, Yuewei,et al. Removal of triclosan during wastewater treatment process and sewage sludge composting-A case study in the middle reaches of the Yellow River[J]. ENVIRONMENT INTERNATIONAL,2020,134:9.
APA Zheng, Guodi,Yu, Bao,Wang, Yuewei,Ma, Chuang,&Chen, Tongbin.(2020).Removal of triclosan during wastewater treatment process and sewage sludge composting-A case study in the middle reaches of the Yellow River.ENVIRONMENT INTERNATIONAL,134,9.
MLA Zheng, Guodi,et al."Removal of triclosan during wastewater treatment process and sewage sludge composting-A case study in the middle reaches of the Yellow River".ENVIRONMENT INTERNATIONAL 134(2020):9.
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