Emerging concerns of VOCs and SVOCs in coking wastewater treatment processes: Distribution profile, emission characteristics, and health risk assessment
文献类型：期刊论文
| 作者 | Saber, Ayman N.; Zhang, Haifeng; Cervantes-Aviles, Pabel; Islam, Ashraful; Gao, Yingxin; An, Wei; Yang, Min |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2020-10 |
| 卷号 | 265页码:1-11 |
| 关键词 | Industrial wastewater Chemical pollutants Emission of VOCs Hazardous materials Health risks |
| ISSN号 | 0269-7491 |
| 英文摘要 | In this study, the distribution profiles, emission characteristics, and health risks associated with 43 volatile and semi-volatile organic compounds, including 15 phenols, 18 polycyclic aromatic hydrocarbons (PAHs), 6 BTEX, and 4 other compounds, were determined in the wastewater treatment plant (WWTP) of a coking factory (plant C) and the succeeding final WWTP (central WWTP). Total phenols with a concentration of 361,000 mu g L-1 were the predominant compounds in the influent wastewater of plant C, whereas PAHs were the major compounds in the final effluents of both coking WWTPs (84.4 mu g L-1 and 30.7 mu g L-1, respectively). The biological treatment process in plant C removed the majority of volatile organic pollutants (94.1%-99.9%). A mass balance analysis for plant C showed that biodegradation was the main removal pathway for all the target compounds (56.6%-99.9%) except BTEX, chlorinated phenols, and high molecular weight (MW) PAHs. Chlorinated phenols and high MW PAHs were mainly removed via sorption to activated sludge (51.8%-73.2% and 60.2%-75.9%, respectively). Air stripping and volatilization were the dominant mechanisms for removing the BTEX compounds (59.8%-73.8%). The total emission rates of the detected volatile pollutants from plant C and the central WWTP were 1,640 g d(-1) and 784 g d(-1), respectively. Benzene from the equalization basins of plant C and the central WWTP corresponded to the highest inhalation carcinogenic risks (1.4 x 10(-3) and 3.2 x 10(-4), respectively), which exceeded the acceptable level for human health (1 x 10(-6)) recommended by the United States Environmental Protection Agency. The results showed that BaP exhibited the highest inhalation non-cancer risk, with a hazard index ratio of 70 and 30 for plant C and the central WWTP, respectively. Moreover, the excess sludge generated during wastewater treatment should also be carefully handled because it adsorbed abundant PAHs and chlorinated phenols at coking plant C (58,000 mu g L-1 and 3,500 mu g L-1) and the central WWTP (622 mu g L-1 and 54 mu g L-1). (C) 2020 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44934]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Saber, Ayman N.,Zhang, Haifeng,Cervantes-Aviles, Pabel,et al. Emerging concerns of VOCs and SVOCs in coking wastewater treatment processes: Distribution profile, emission characteristics, and health risk assessment[J]. ENVIRONMENTAL POLLUTION,2020,265:1-11. |
| APA | Saber, Ayman N..,Zhang, Haifeng.,Cervantes-Aviles, Pabel.,Islam, Ashraful.,Gao, Yingxin.,...&Yang, Min.(2020).Emerging concerns of VOCs and SVOCs in coking wastewater treatment processes: Distribution profile, emission characteristics, and health risk assessment.ENVIRONMENTAL POLLUTION,265,1-11. |
| MLA | Saber, Ayman N.,et al."Emerging concerns of VOCs and SVOCs in coking wastewater treatment processes: Distribution profile, emission characteristics, and health risk assessment".ENVIRONMENTAL POLLUTION 265(2020):1-11. |
入库方式： OAI收割
来源：生态环境研究中心
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