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Control and Remediation Methods for Water Eutrophication

A special issue of International Journal of Environmental Research and Public Health (ISSN 1660-4601). This special issue belongs to the section "Environmental Science and Engineering".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 3523

Special Issue Editor


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Guest Editor
Department of Environmental Engineering, College of Environment, Sichuan Agricultural University, Chengdu 611100, China
Interests: water restoration; submerged macrophytes; algae blooms; allelopathic effect

Special Issue Information

Dear Colleagues,

Over the past few centuries, water resources around the world have experienced varying degrees of deterioration. Eutrophication is one of the most important representations of water pollutions and a process of ecosystem degradation and aging of water bodies. Eutrophication is characterized by the rapid growth of algae and other planktons, the decline in dissolved oxygen, the deterioration of water quality, and the mass death of fish and other organisms. It presents a global challenge in environmental management and has adversely affected the use of water resources, socioeconomic development, and human living conditions.

Over the past three decades, many conventional and novel methods that use physical, chemical, and biological processes have been applied to improve and eliminate contaminants in eutrophic lakes. However, their high cost, complex operation, likelihood of secondary pollution, and other shortcomings, represent potential issues. Therefore, it is of great theoretical and practical significance to study economic and feasible alga removal methods.

The purpose of this Special Issue is to provide a platform for scientists studying water eutrophication to publish their latest research results and provide a variety of new approaches for the prevention and treatment of water eutrophication.

Prof. Dr. Yingjun Wang
Guest Editor

Manuscript Submission Information

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Keywords

  • water eutrophication
  • Cyanobacteria bloom
  • bioremediation
  • physical and chemical techniques
  • nitrogen and phosphorus
  • algae removal
  • allelopathy

Published Papers (1 paper)

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Research

19 pages, 11351 KiB  
Article
Nutrients and Environmental Factors Cross Wavelet Analysis of River Yi in East China: A Multi-Scale Approach
by Lizhi Wang, Hongli Song, Juan An, Bin Dong, Xiyuan Wu, Yuanzhi Wu, Yun Wang, Bao Li, Qianjin Liu and Wanni Yu
Int. J. Environ. Res. Public Health 2023, 20(1), 496; https://doi.org/10.3390/ijerph20010496 - 28 Dec 2022
Cited by 3 | Viewed by 2532
Abstract
The accumulation of nutrients in rivers is a major cause of eutrophication, and the change in nutrient content is affected by a variety of factors. Taking the River Yi as an example, this study used wavelet analysis tools to examine the periodic changes [...] Read more.
The accumulation of nutrients in rivers is a major cause of eutrophication, and the change in nutrient content is affected by a variety of factors. Taking the River Yi as an example, this study used wavelet analysis tools to examine the periodic changes in nutrients and environmental factors, as well as the relationship between nutrients and environmental factors. The results revealed that total phosphorus (TP), total nitrogen (TN), and ammonia nitrogen (NH4+–N) exhibit multiscale oscillation features, with the dominating periods of 16–17, 26, and 57–60 months. The continuous wavelet transform revealed periodic fluctuation laws on multiple scales between nutrients and several environmental factors. Wavelet transform coherence (WTC) was performed on nutrients and environmental factors, and the results showed that temperature and dissolved oxygen (DO) have a strong influence on nutrient concentration fluctuation. The WTC revealed a weak correlation between pH and TP. On a longer period, however, pH was positively correlated with TN. The flow was found to be positively correct with N and P, while N and P were found to be negatively correct with DO and electrical conductance (EC) at different scales. In most cases, TP was negatively correlated with 5-day biochemical oxygen demand (BOD5) and permanganate index (CODMn). The correlation between TN and CODMn and BOD5 was limited, and no clear dominant phase emerged. In a nutshell, wavelet analysis revealed that water temperature, pH, DO, flow, EC, CODMn, and BOD5 had a pronounced influence on nutrient concentration in the River Yi at different time scales. In the case of the combination of environmental factors, pH and DO play the largest role in determining nutrient concentration. Full article
(This article belongs to the Special Issue Control and Remediation Methods for Water Eutrophication)
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