Occurrence and risk assessment of volatile halogenated disinfection by-products in an urban river supplied by reclaimed wastewater
The reuse of the sewage is an effective way to solve the shortage of water resources, but disinfection by-products (DBPs) caused by chlorination may bring potential ecological and health risks to the supplied water. In this study, the occurrence and potential ecological risk of DBPs in SH River in B...
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Format: | Article |
Language: | English |
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Elsevier
2021-03-01
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Series: | Ecotoxicology and Environmental Safety |
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Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651321000233 |
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doaj-ffb11874ea88496395da07dd176363d1 |
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record_format |
Article |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Beibei Heng Rui Zhang Zhenbei Wang Yuting Zhang Yiping Wang Zilong Song Chao Liu Dezhi Sun Fei Qi |
spellingShingle |
Beibei Heng Rui Zhang Zhenbei Wang Yuting Zhang Yiping Wang Zilong Song Chao Liu Dezhi Sun Fei Qi Occurrence and risk assessment of volatile halogenated disinfection by-products in an urban river supplied by reclaimed wastewater Ecotoxicology and Environmental Safety Reclaimed water Risk assessment Volatile halogenated Disinfection by-products Urban river |
author_facet |
Beibei Heng Rui Zhang Zhenbei Wang Yuting Zhang Yiping Wang Zilong Song Chao Liu Dezhi Sun Fei Qi |
author_sort |
Beibei Heng |
title |
Occurrence and risk assessment of volatile halogenated disinfection by-products in an urban river supplied by reclaimed wastewater |
title_short |
Occurrence and risk assessment of volatile halogenated disinfection by-products in an urban river supplied by reclaimed wastewater |
title_full |
Occurrence and risk assessment of volatile halogenated disinfection by-products in an urban river supplied by reclaimed wastewater |
title_fullStr |
Occurrence and risk assessment of volatile halogenated disinfection by-products in an urban river supplied by reclaimed wastewater |
title_full_unstemmed |
Occurrence and risk assessment of volatile halogenated disinfection by-products in an urban river supplied by reclaimed wastewater |
title_sort |
occurrence and risk assessment of volatile halogenated disinfection by-products in an urban river supplied by reclaimed wastewater |
publisher |
Elsevier |
series |
Ecotoxicology and Environmental Safety |
issn |
0147-6513 |
publishDate |
2021-03-01 |
description |
The reuse of the sewage is an effective way to solve the shortage of water resources, but disinfection by-products (DBPs) caused by chlorination may bring potential ecological and health risks to the supplied water. In this study, the occurrence and potential ecological risk of DBPs in SH River in Beijing were evaluated. Four kinds of DBPs were detected in 84 samples by GC-MS, including THM, CH, CTC and TCAN, whose detection rates were 100%, 100%, 100% and 2.38%, respectively. Combining with the relevant standard limitation and corresponding threshold values in China, and the reported concentration in domestic and foreign literatures, the results showed that the number of samples which [THM], [CTC] and [CH] exceeded the threshold values in relevant standard for 23.81%, 100.00% and 89.29%, respectively. CTC showed the highest excess times than the threshold value with [CTC]max was 356.46 μg/L. In addition, the temporal and spatial characteristics of identified DBPs were studied. [THM], [CTC] and [CH] all exhibited the highest concentration in Aug., which was as the same as the variation trend of air and water temperature. With the increase of sampling distance, [THM] and [CTC] fluctuated greatly, and the background values in SH River were higher due to the supplement of the reclaimed water. [CH] and [TCAN] gradually decreased, which may be due to that they were more prone to volatilize in the channel and be degraded by aquatic microorganisms. In addition, the occurrence situation in S2 and S7, were in the order of CTC > CH > THM. Hence, the rank of the occurrence situation of identified DBPs was CTC > CH > THM > TCAN. Multivariate analysis showed that THM was significantly positively correlated with CTC and their sources were similar. Moreover, they were all affected by solution pH and DO. Potential ecological risk assessment indicated that the rank of identified DBPs ecological risk was CTC > THM > CH > TCAN. Among them, the risk level of CTC and THM were high in both daily and extreme situations. Therefore, the potential ecological risk caused by DBPs should be fully considered in the process of reclaimed water supplying landscape water, such as urban river. If a higher level of the ecological risk management is needed, THM, CTC and CH, especially CTC, should be considered firstly. |
topic |
Reclaimed water Risk assessment Volatile halogenated Disinfection by-products Urban river |
url |
http://www.sciencedirect.com/science/article/pii/S0147651321000233 |
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doaj-ffb11874ea88496395da07dd176363d12021-04-23T06:15:57ZengElsevierEcotoxicology and Environmental Safety0147-65132021-03-01211111912Occurrence and risk assessment of volatile halogenated disinfection by-products in an urban river supplied by reclaimed wastewaterBeibei Heng0Rui Zhang1Zhenbei Wang2Yuting Zhang3Yiping Wang4Zilong Song5Chao Liu6Dezhi Sun7Fei Qi8Beijing Key Laboratory for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, ChinaBeijing Urban River and Lake Management Division, No. A1 Youyi Village, Beiwa Road, Haidian District, Beijing 100089, ChinaBeijing Key Laboratory for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, ChinaJiangsu Key Laboratory of Industrial Pollution Control and Resource Reuse, School of Environment Engineering, Xuzhou University of Technology, Xuzhou 221018, ChinaBeijing Key Laboratory for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, China; Corresponding author.The reuse of the sewage is an effective way to solve the shortage of water resources, but disinfection by-products (DBPs) caused by chlorination may bring potential ecological and health risks to the supplied water. In this study, the occurrence and potential ecological risk of DBPs in SH River in Beijing were evaluated. Four kinds of DBPs were detected in 84 samples by GC-MS, including THM, CH, CTC and TCAN, whose detection rates were 100%, 100%, 100% and 2.38%, respectively. Combining with the relevant standard limitation and corresponding threshold values in China, and the reported concentration in domestic and foreign literatures, the results showed that the number of samples which [THM], [CTC] and [CH] exceeded the threshold values in relevant standard for 23.81%, 100.00% and 89.29%, respectively. CTC showed the highest excess times than the threshold value with [CTC]max was 356.46 μg/L. In addition, the temporal and spatial characteristics of identified DBPs were studied. [THM], [CTC] and [CH] all exhibited the highest concentration in Aug., which was as the same as the variation trend of air and water temperature. With the increase of sampling distance, [THM] and [CTC] fluctuated greatly, and the background values in SH River were higher due to the supplement of the reclaimed water. [CH] and [TCAN] gradually decreased, which may be due to that they were more prone to volatilize in the channel and be degraded by aquatic microorganisms. In addition, the occurrence situation in S2 and S7, were in the order of CTC > CH > THM. Hence, the rank of the occurrence situation of identified DBPs was CTC > CH > THM > TCAN. Multivariate analysis showed that THM was significantly positively correlated with CTC and their sources were similar. Moreover, they were all affected by solution pH and DO. Potential ecological risk assessment indicated that the rank of identified DBPs ecological risk was CTC > THM > CH > TCAN. Among them, the risk level of CTC and THM were high in both daily and extreme situations. Therefore, the potential ecological risk caused by DBPs should be fully considered in the process of reclaimed water supplying landscape water, such as urban river. If a higher level of the ecological risk management is needed, THM, CTC and CH, especially CTC, should be considered firstly.http://www.sciencedirect.com/science/article/pii/S0147651321000233Reclaimed waterRisk assessmentVolatile halogenated Disinfection by-productsUrban river |