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Research on Watershed Ecological Restoration and Water Pollution Control

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water Quality and Contamination".

Deadline for manuscript submissions: 30 June 2026 | Viewed by 728

Special Issue Editors


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Guest Editor
Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou 310030, China
Interests: wetland carbon and nitrogen cycles; new constructed wetland technologies; low-carbon sewage treatment technologies; agricultural non-point source pollution control; emerging pollutant treatment; artificial intelligence and environmental protection
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Zhejiang Province Key Laboratory of Recycling and Eco-Treatment of Waste Biomass, Zhejiang University of Science and Technology, Hangzhou 310023, China
Interests: constructed wetland; PFAS; microplastics; biochar; sludge
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
Interests: watershed pollution management; urban non-point source pollution control; sponge city planning

Special Issue Information

Dear Colleagues,

With the rapid development in industry and urbanization, water environmental pollution and ecological degradation in watersheds have become increasingly prominent, posing multiple challenges to the fields of ecological restoration and water pollution control. Moreover, the frequent detection of emerging pollutants (such as antibiotics, microplastics, and perfluoroalkyl substances) in water bodies presents potential threats to ecosystems and human health. In response to increasingly stringent environmental standards and the demands of sustainable development, the fields of ecological restoration and water pollution control require continuous innovation and research based on traditional techniques, which are necessary to advance related technologies toward greater efficiency and environmental friendliness.

This Special Issue aims to compile and showcase the latest and most innovative research findings in the fields of watershed ecological restoration and water pollution control, providing theoretical foundations and technical support for the sustainable development of this discipline. Topics of interest include, but are not limited to, the following:

  1. Novel environmentally friendly materials;
  2. Greenhouse gas mitigation strategies in wastewater treatment technologies;
  3. Transport and control of emerging pollutants in watershed environments;
  4. Engineering applications of innovative ecological restoration technologies;
  5. Energy-efficient technologies for pollutants removal;
  6. Resource recovery technology;
  7. Development of intelligent watershed management systems.

Dr. Lingwei Kong
Dr. Cheng Shen
Dr. Xiaoyue Zhang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • watershed ecological restoration
  • water pollution control
  • novel materials
  • emerging contaminants
  • greenhouse gas emissions
  • sustainability
  • ecological engineering
  • resource recovery
  • intelligent watershed management systems

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Published Papers (1 paper)

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Research

14 pages, 2090 KB  
Article
Coupling Microbial Transformation and Adsorption for Organic Phosphorus Removal in Sludge Biochar-Based Biofilter
by Zhangbo Wu, Shuai Wu, Shengye Ou, Jinyong Zhu, Liti Su, Jin Zhang and Huizhen Hu
Water 2026, 18(6), 687; https://doi.org/10.3390/w18060687 - 15 Mar 2026
Viewed by 439
Abstract
Organic phosphorus (OP) constitutes an important and chemically diverse fraction of total phosphorus (TP) in aquatic environments, yet its removal mechanisms in substrate-based treatment systems remain insufficiently understood. In particular, the relative contributions of adsorption and microbial transformation to OP removal and their [...] Read more.
Organic phosphorus (OP) constitutes an important and chemically diverse fraction of total phosphorus (TP) in aquatic environments, yet its removal mechanisms in substrate-based treatment systems remain insufficiently understood. In particular, the relative contributions of adsorption and microbial transformation to OP removal and their coupling effects are still unclear. To address this issue, gravel-, sludge-, and sludge biochar-based biofilters were operated under controlled phosphorus inputs with varying OP/inorganic phosphate (IP) compositions. Phosphorus removal performance, effluent phosphorus speciation, phosphatase activity, and microbial community characteristics were systematically analyzed to distinguish physicochemical and biological pathways. Results indicated that phosphorus removal was dominated by adsorption at early operational stages, with comparable performance across substrates. As the operation progressed, sludge-based substrates exhibited more stable removal than gravel, attributable to stronger Fe/Al-associated adsorption. Biologically active sludge biochar systems consistently maintained higher TP removal efficiencies (87.1–93.3%) than abiotic systems. Phosphatase-mediated OP mineralization governed phosphorus speciation transformation, while effective removal depended on subsequent immobilization of transformation products. Overall, the results demonstrate that efficient OP removal relies on a coupled bio–physicochemical mechanism, in which microbial transformation and substrate adsorption act synergistically. This insight offers guidance on optimizing phosphorus control in biofilters and constructed wetlands (CWs), especially for robust biofilters and CWs designed to treat OP-rich wastewaters. Full article
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