Effects of shading & calcium peroxide suspension on landscape water quality and CH4 and N2O production
Effects of shading & calcium peroxide suspension on landscape water quality and CH4 and N2O production
Landscape water plays an important role in regulating the urban heat island effect, but its eutrophication can intensity greenhouse gas (GHGs) emissions. Thus, effective strategies are needed to manage water quality and GHGs simultaneously. This study aims to mitigate eutrophication and GHGs production of landscape water during summer through shading or calcium peroxide (CP) suspension. Results demonstrate that 60 % shading, 1.0 g CP/L suspension, and their combination could effectively purify landscape water and lower GHGs emissions. By reducing the concentration of nitrogen, phosphorus, and organic matter, and controlling algal density and Chl-a level, the study successfully lowered the production of CH4 and N2O. Compared to the control, TN, TP and COD concentrations decreased by 43.21 %, 71.85 %, and 68.04 %, respectively, while algal density and Chl-a decreased by 74.84 % and 77.08 % under the usage of combined shading and CP suspension. Furthermore, the accumulation of CH4 and N2O decreased by 43.84 % and 15.18 % on average, potentially due to the reduced abundance of Methanomassiliicoccus and LD29 under the combination condition. This study proposed an innovative approach to actively manage GHGs in landscape water bodies while improving water quality, which is a potential strategy to alleviate urban heat island effects.
Calcium peroxide suspension, Eutrophication control, Shading, Strong greenhouse gas reduction, Urban landscape water
Fu, Tian-Tian
2bc43cfb-7533-4bfd-bf96-f716107e39fd
Wang, Yi
07b6fb1f-a393-49e2-8e0c-d84c532e932a
Zhao, Hui-Ying
a1560e13-73c0-44f7-b310-627f3d68541f
Liang, Zhen-Hao
22ac35dd-28a1-47e8-adf9-0382a5cdd5eb
Wang, Yue-Ning
310a1a04-c220-40cc-9c25-8bec327d04f9
Zhang, Kai
fee42220-17c7-4e8f-bf95-7f09d6229aac
Ouyang, Hui-Long
01de5ac1-9465-42c7-a73c-fff0cc4f7511
Yin, Jia-Ni
8f91e49e-ec38-439e-8b05-a45cf02a445e
Liu, Yong-Qiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
24 July 2024
Fu, Tian-Tian
2bc43cfb-7533-4bfd-bf96-f716107e39fd
Wang, Yi
07b6fb1f-a393-49e2-8e0c-d84c532e932a
Zhao, Hui-Ying
a1560e13-73c0-44f7-b310-627f3d68541f
Liang, Zhen-Hao
22ac35dd-28a1-47e8-adf9-0382a5cdd5eb
Wang, Yue-Ning
310a1a04-c220-40cc-9c25-8bec327d04f9
Zhang, Kai
fee42220-17c7-4e8f-bf95-7f09d6229aac
Ouyang, Hui-Long
01de5ac1-9465-42c7-a73c-fff0cc4f7511
Yin, Jia-Ni
8f91e49e-ec38-439e-8b05-a45cf02a445e
Liu, Yong-Qiang
75adc6f8-aa83-484e-9e87-6c8442e344fa
Fu, Tian-Tian, Wang, Yi, Zhao, Hui-Ying, Liang, Zhen-Hao, Wang, Yue-Ning, Zhang, Kai, Ouyang, Hui-Long, Yin, Jia-Ni and Liu, Yong-Qiang
(2024)
Effects of shading & calcium peroxide suspension on landscape water quality and CH4 and N2O production.
Journal of Water Process Engineering, 65, [105813].
(doi:10.1016/j.jwpe.2024.105813).
Abstract
Landscape water plays an important role in regulating the urban heat island effect, but its eutrophication can intensity greenhouse gas (GHGs) emissions. Thus, effective strategies are needed to manage water quality and GHGs simultaneously. This study aims to mitigate eutrophication and GHGs production of landscape water during summer through shading or calcium peroxide (CP) suspension. Results demonstrate that 60 % shading, 1.0 g CP/L suspension, and their combination could effectively purify landscape water and lower GHGs emissions. By reducing the concentration of nitrogen, phosphorus, and organic matter, and controlling algal density and Chl-a level, the study successfully lowered the production of CH4 and N2O. Compared to the control, TN, TP and COD concentrations decreased by 43.21 %, 71.85 %, and 68.04 %, respectively, while algal density and Chl-a decreased by 74.84 % and 77.08 % under the usage of combined shading and CP suspension. Furthermore, the accumulation of CH4 and N2O decreased by 43.84 % and 15.18 % on average, potentially due to the reduced abundance of Methanomassiliicoccus and LD29 under the combination condition. This study proposed an innovative approach to actively manage GHGs in landscape water bodies while improving water quality, which is a potential strategy to alleviate urban heat island effects.
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Accepted/In Press date: 14 July 2024
e-pub ahead of print date: 24 July 2024
Published date: 24 July 2024
Keywords:
Calcium peroxide suspension, Eutrophication control, Shading, Strong greenhouse gas reduction, Urban landscape water
Identifiers
Local EPrints ID: 493368
URI: http://eprints.soton.ac.uk/id/eprint/493368
ISSN: 2214-7144
PURE UUID: 26a3dd97-e49e-4dcb-b043-f1e0ddd2eae2
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Date deposited: 30 Aug 2024 16:49
Last modified: 31 Aug 2024 01:46
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Contributors
Author:
Tian-Tian Fu
Author:
Yi Wang
Author:
Hui-Ying Zhao
Author:
Zhen-Hao Liang
Author:
Yue-Ning Wang
Author:
Kai Zhang
Author:
Hui-Long Ouyang
Author:
Jia-Ni Yin
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