Research progress on occurrence characteristics， environmental impact and treatment technology of PAHs in wastewater treatment plants

ZHOU Yimai; LIU Runyu; YANG Qing; LIU Xiuhong; XU Jin; WANG Yaxin; KANG Xiaoxuan

doi:10.13205/j.hjgc.202601002

Volume 44 Issue 1

Jan. 2026

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ZHOU Yimai, LIU Runyu, YANG Qing, LIU Xiuhong, XU Jin, WANG Yaxin, KANG Xiaoxuan. Research progress on occurrence characteristics， environmental impact and treatment technology of PAHs in wastewater treatment plants[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(1): 8-20. doi: 10.13205/j.hjgc.202601002

Citation:

ZHOU Yimai, LIU Runyu, YANG Qing, LIU Xiuhong, XU Jin, WANG Yaxin, KANG Xiaoxuan. Research progress on occurrence characteristics， environmental impact and treatment technology of PAHs in wastewater treatment plants[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(1): 8-20. doi: 10.13205/j.hjgc.202601002

Citation:

ZHOU Yimai, LIU Runyu, YANG Qing, LIU Xiuhong, XU Jin, WANG Yaxin, KANG Xiaoxuan. Research progress on occurrence characteristics， environmental impact and treatment technology of PAHs in wastewater treatment plants[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(1): 8-20. doi: 10.13205/j.hjgc.202601002

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Research progress on occurrence characteristics， environmental impact and treatment technology of PAHs in wastewater treatment plants

doi: 10.13205/j.hjgc.202601002

1. Faculty of Environmental Science and Engineering, Beijing University of Technology, Beijing 100124, China;
2. China IPPR International Engineering Co., Ltd., Beijing 100089, China;
3. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China

Received Date: 2025-03-21
Available Online: 2026-02-26
Publish Date: 2026-01-22

Abstract

Abstract

As a typical persistent organic pollutant， polycyclic aromatic hydrocarbons （PAHs） have become a key challenge in global environmental governance due to their carcinogenicity， bioaccumulation， and long-distance migration ability. The occurrence of PAHs in wastewater treatment plants （WWTPs） across multiple countries was systematically analyzed in this study. The concentration distribution patterns were revealed： industrial-intensive regions exhibited significantly higher influent PAHs concentrations compared to domestic wastewater-dominant areas； in sludge， high molecular weight PAHs account for over 65% of the total PAHs. The removal mechanisms of PAHs at different wastewater treatment stages were comprehensively examined. Biological treatment achieved an average removal rate of approximately 60%. Although advanced oxidation technology has a beneficial treatment effect， it presents problems such as high cost and toxicity of by-products. Based on these findings， a full-chain governance framework was proposed， integrating “source apportionment， process interception， and intelligent regulation.” This study was conducted from multiple analytical perspectives. A theoretical framework and engineering strategies were established to achieve precise control and mitigate risks associated with PAHs in WWTPs.
- polycyclic aromatic hydrocarbons,
- wastewater treatment plants,
- occurrence characteristics,
- environmental impact,
- biological treatment

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References(107)

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