Improvement in pollutant controlling performance by modified aggregate structure in extensive green roof substrate layer

Zhang, Junyu; Xu, Chen; Fu, Dafang; Liu, Weixing

doi:10.1039/d2ew00062h

Cited by 3 publications

(2 citation statements)

References 38 publications

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“…The additives were added in proportion to the total volume of the substrate mixture. Considering our previous studies 14 and ensuring the rational comparison, the addition ratio of the additives was set at 2%. Non-woven geotextiles were used in the filter layer to prevent outflow from the entraining substrate materials.…”

Section: Experimental Columnmentioning

confidence: 99%

“…Previously, we had studied the feasibility and effect of polyaluminum chloride (PAC) addition in the EGR substrate layer on the improvement of pollutant-controlling performance. 14 The results showed that the addition of 2% PAC could lead to stable aggregates in the substrate layer. Compared with the control group without PAC addition, the EGR experimental device with 2% PAC could significantly improve pollutant removal and load reduction rates of EGR for nitrate, total nitrogen, and total phosphorus.…”

Section: Introductionmentioning

confidence: 96%

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Comparison of rainwater management performance of modified extensive green roof substrate layer with different additives in rainstorm events

Fei

Miao

et al. 2023

Environ. Sci.: Water Res. Technol.

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Section: Experimental Columnmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Comparison of rainwater management performance of modified extensive green roof substrate layer with different additives in rainstorm events

Fei

Miao

et al. 2023

Environ. Sci.: Water Res. Technol.

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Mechanisms and Applications of Nature-Based Solutions for Stormwater Control in the Context of Climate Change: A Review

Sun,

Rao,

Chen

et al. 2024

Atmosphere

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Nature-based solutions (NbSs) are considered to form an innovative stormwater management approach that has living resolutions grounded in natural processes and structures. NbSs offer many other environmental benefits over traditional grey infrastructure, including reduced air pollution and climate change mitigation. This review predominantly centers on the hydrological aspect of NbSs and furnishes a condensed summary of the collective understanding about NbSs as an alternatives for stormwater management. In this study, which employed the CIMO (Context, Intervention, Mechanism, Outcome) framework, a corpus of 187 NbS-related publications (2000–2023) extracted from the Web of Science database were used, and we expounded upon the origins, objectives, and significance of NbSs in urban runoff and climate change, and the operational mechanisms of NbSs (including green roofs, permeable pavements, bioretention systems, and constructed wetlands), which are widely used in urban stormwater management, were also discussed. Additionally, the efficacy of NbSs in improving stormwater quality and quantity is discussed in depth in this study. In particular, the critical role of NbSs in reducing nutrients such as TSS, TN, TP, and COD and heavy metal pollutants such as Fe, Cu, Pb, and Zn is emphasized. Finally, the main barriers encountered in the promotion and application of NbSs in different countries and regions, including financial, technological and physical, regulatory, and public awareness, are listed, and future directions for improving and strategizing NbS implementation are proposed. This review gathered knowledge from diverse sources to provide an overview of NbSs, enhancing the comprehension of their mechanisms and applications. It underscores specific areas requiring future research attention.

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Green Roof Systems for Rainwater and Sewage Treatment

Yan,

Yang,

Wang

et al. 2024

Water

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Green roof systems are regarded as a viable solution for mitigating urban environmental challenges and offering a multitude of environmental benefits. Currently, green roofs are increasingly being utilized for the management of rainwater runoff and wastewater. The integration of decentralized rainwater and sewage on-site treatment technology with urban green buildings is being gradually promoted. Green roofs can also be considered as a form of decentralized rainwater and sewage on-site technology, which holds great potential for widespread adoption in the future. Several studies have suggested that green roofs may serve as a potential source of pollutants; however, there are also studies that clearly demonstrate the efficient removal of nutrients and organic pollutants by green roofs. This article critically examines the existing literature on water treatment aspects associated with green roofs and elucidates their classification and operational mechanisms. Through an analysis of previous research cases, it becomes evident that both substrate and vegetation play a significant role in influencing the treatment performance of green roofs. By designing and configuring appropriate substrate and vegetation, green roofs can play a pivotal role in the purification of water quality. Finally, a brief outlook is presented for the future research directions of green roofs, with the anticipation that green roofs will feature more innovative and environmentally friendly designs, as well as expanded prospects for application.

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Improvement in pollutant controlling performance by modified aggregate structure in extensive green roof substrate layer

Abstract: Pollutants leaching and control of the extensive green roof (EGR) during rainfall events is crucial to its improvement and promotion, in which the substrate layer plays a key role. Adding...

Cited by 3 publications

References 38 publications

Comparison of rainwater management performance of modified extensive green roof substrate layer with different additives in rainstorm events

Comparison of rainwater management performance of modified extensive green roof substrate layer with different additives in rainstorm events

Mechanisms and Applications of Nature-Based Solutions for Stormwater Control in the Context of Climate Change: A Review

Green Roof Systems for Rainwater and Sewage Treatment

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