Which type of pollutants need to be controlled with priority in wastewater treatment plants: Traditional or emerging pollutants?

Zhou, Yunqiao; Meng, Jing; Zhang, Meng; Chen, Shuqin; He, Bo; Zhao, Hui; Li, Qifeng; Zhang, Sheng; Wang, Tieyu

doi:10.1016/j.envint.2019.104982

Cited by 134 publications

(36 citation statements)

References 67 publications

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“…For the detected PPCPs, the two compounds with the highest concentration in the influent water are ofloxacin (OLF) and dehydrated erythromycin (ERY-H 2 O), both of which can be partially biodegraded, but a different degradation efficiency was observed. This finding once again proves that PPCP removal differed significantly from treatment processes and PPCP components (Zhou, Meng, et al, 2019).…”

Section: Effluent and Influent Of The Wwtpssupporting

confidence: 62%

Contaminants of emerging concern in aquatic environment: Occurrence, monitoring, fate, and risk assessment

Tang

Zhong

et al. 2020

Water Environment Research

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The present work provides a review focusing on contaminants of emerging concern (CECs) in aquatic environment, with an emphasis on their occurrence, monitoring, fate, and risk assessment in the research published in the scientific literature in 2019. Several studies revealed that these organic contaminants were detected in many water bodies and suspect, nontarget, and target screening provided an efficient detection for the co-existing organic substances with complex components. Wastewater resource recovery facilities were concurrently considered as a central source, and several specific chemicals have been found to be used as chemical markers to track the source of CECs in some urban watersheds. Reliable monitoring, reliable fate/toxicity assessment, and effective removal that consider CECs as a heterogeneous group rather than single substances will be the challenges for the research community in the future.

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Section: Effluent and Influent Of The Wwtpssupporting

confidence: 62%

Contaminants of emerging concern in aquatic environment: Occurrence, monitoring, fate, and risk assessment

Tang

Zhong

et al. 2020

Water Environment Research

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“…Heavy metal contamination is a common factor that affects built ecosystems in WWTPs [1,3,8,9]. Studying the response of these ecosystems and microbiomes therein during heavy metal exposure can elucidate key features involved in microbial adaptation to toxicants and improve the ecosystem robustness for wastewater treatment.…”

Section: Discussionmentioning

confidence: 99%

“…Heavy metal pollution is consistently a critical issue in many parts of the world, mainly attributed to their intensive consumption [1,2]. Wastewater treatment plants (WWTPs) inevitably become the source and sink of these toxic heavy metals [3].…”

Section: Introductionmentioning

confidence: 99%

Revealing taxon-specific heavy metal-resistance mechanisms in denitrifying phosphorus removal sludge using genome-centric metaproteomics

Lin

Wang

et al. 2021

Microbiome

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Background Denitrifying phosphorus removal sludge (DPRS) is widely adopted for nitrogen and phosphorus removal in wastewater treatment but faces threats from heavy metals. However, a lack of understanding of the taxon-specific heavy metal-resistance mechanisms hinders the targeted optimization of DPRS’s robustness in nutrient removal. Results We obtained 403 high- or medium-quality metagenome-assembled genomes from DPRS treated by elevating cadmium, nickel, and chromium pressure. Then, the proteomic responses of individual taxa under heavy metal pressures were characterized, with an emphasis on functions involving heavy metal resistance and maintenance of nutrient metabolism. When oxygen availability was constrained by high-concentration heavy metals, comammox Nitrospira overproduced highly oxygen-affinitive hemoglobin and electron-transporting cytochrome c-like proteins, underpinning its ability to enhance oxygen acquisition and utilization. In contrast, Nitrosomonas overexpressed ammonia monooxygenase and nitrite reductase to facilitate the partial nitrification and denitrification process for maintaining nitrogen removal. Comparisons between phosphorus-accumulating organisms (PAOs) demonstrated different heavy metal-resistance mechanisms adopted by Dechloromonas and Candidatus Accumulibacter, despite their high genomic similarities. In particular, Dechloromonas outcompeted the canonical PAO Candidatus Accumulibacter in synthesizing polyphosphate, a potential public good for heavy metal detoxification. The superiority of Dechloromonas in energy utilization, radical elimination, and damaged cell component repair also contributed to its dominance under heavy metal pressures. Moreover, the enrichment analysis revealed that functions involved in extracellular polymeric substance formation, siderophore activity, and heavy metal efflux were significantly overexpressed due to the related activities of specific taxa. Conclusions Our study demonstrates that heavy metal-resistance mechanisms within a multipartite community are highly heterogeneous between different taxa. These findings provide a fundamental understanding of how the heterogeneity of individual microorganisms contributes to the metabolic versatility and robustness of microbiomes inhabiting dynamic environments, which is vital for manipulating the adaptation of microbial assemblages under adverse environmental stimuli.

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“…Effluents and sludges of wastewater treatment plants along the Yangtze River in the Northern part of China were analyzed by Zhou et al (2019). Wastewater and sludge samples were collected from six treatment plants located along the river from the source points of influent as well as effluent.…”

Section: Wastewater Disposalmentioning

confidence: 99%

Wastewater treatment, reuse, and disposal‐associated effects on environment and health

Choudri

Al‐Awadhi

Charabi

et al. 2020

Water Environment Research

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This paper presents the review of the literature published in the year 2019 related to treatment and reuse of wastewater and effects on the environment and human health. The scientific review on the treatment and reuse of wastewaters is divided into various sections in the paper. The review sections cover wastewater management, reuse, removal of microorganisms, and chemical constituents. Besides, the review also covers research focused on wastewater treatment plants, disposal, and the management of wastewater sludge as well as biosolids in the environment.

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Which type of pollutants need to be controlled with priority in wastewater treatment plants: Traditional or emerging pollutants?

Cited by 134 publications

References 67 publications

Contaminants of emerging concern in aquatic environment: Occurrence, monitoring, fate, and risk assessment

Contaminants of emerging concern in aquatic environment: Occurrence, monitoring, fate, and risk assessment

Revealing taxon-specific heavy metal-resistance mechanisms in denitrifying phosphorus removal sludge using genome-centric metaproteomics

Wastewater treatment, reuse, and disposal‐associated effects on environment and health

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