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Constructed Wetlands and Nutrient Removal
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Constructed Wetlands and Nutrient Removal

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

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 5056

Special Issue Editors

Dr. Sarah A. White

E-Mail Website
Guest Editor
Plant and Environmental Sciences Department, Clemson University, Clemson, SC, USA
Interests: constructed wetlands; nutrient cycling; water treatment; agrichemicals
Special Issues, Collections and Topics in MDPI journals
Dr. William Strosnider

E-Mail Website
Guest Editor
Belle W. Baruch Institute for Marine and Coastal Sciences, Columbia, SC, USA
Interests: treatment wetlands; wetland biogeochemistry; water management with living systems; aquatic pollutant dynamics; mine water remediation; ecosystem restoration; appropriate technologies for developing regions; coastal best management practices

Special Issue Information

Dear Colleagues,

As humans throughout the world struggle to manage poor water quality and enhance aquatic ecosystem health, the use of nature-based systems to clean water is increasing. Constructed wetlands are one such nature-based technology that has applications across multiple sectors of society and are also typically more economically feasible to install and maintain.

As guest editors for this Special Issue on “Constructed Wetlands and Nutrient Removal,” we invite you to submit original research papers, review papers, or short communications with preliminary but impactful findings for consideration for inclusion in this special issue.

We are keen to receive contributions reporting results on the full spectrum of constructed wetland designs used to mitigate nutrients from various source waters (municipal wastewater, irrigation return flow, industrial wastewater, agricultural runoff, urban stormwater, etc.). Contributions related to economics and ecosystem service quantification, resource recovery, or secondary uses of harvested materials from constructed wetlands (e.g., phosphate, biofuels, plants for restoration purposes) are also encouraged.

Authors are invited to submit a preliminary abstract and a tentative title to the Guest Editors to determine whether the topic fits the scope of the Special Issue.

Dr. Sarah A. White
Dr. William Strosnider
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 100 words) can be sent to the Editorial Office for announcement on this website.

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

  • free water surface wetland
  • subsurface flow wetland
  • vertical flow wetlands
  • floating treatment wetland
  • hybrid constructed wetland
  • water treatment
  • wastewater treatment
  • water reuse
  • nutrient mitigation
  • water management
  • ecosystem services

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Published Papers (2 papers)

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Research

12 pages, 2377 KiB  
Article
Selenium Removal by Sediments and Plants at the Constructed Pariette Wetlands, Utah (USA)
by Colleen Jones, Michael Amacher, Paul Grossl and Astrid Jacobson
Water 2023, 15(9), 1728; https://doi.org/10.3390/w15091728 - 29 Apr 2023
Cited by 1 | Viewed by 1909
Abstract
Selenium (Se) contamination of public lands and water is a result of irrigated agriculture and mining activities in areas rich in Se geologic deposits. Pariette Draw is part of the northern Colorado Plateau and is an area of concern for Se contamination in [...] Read more.
Selenium (Se) contamination of public lands and water is a result of irrigated agriculture and mining activities in areas rich in Se geologic deposits. Pariette Draw is part of the northern Colorado Plateau and is an area of concern for Se contamination in the Pariette Wetlands. Pariette Wetlands, a wetland built in the 1970s to provide wildlife habitat, is distinguished by its arid climate and a short growing season of hot dry summers followed by cold winters with several months below freezing. An understanding of how Se is mobilized and removed within the wetland will provide management strategies that minimize and mitigate Se contamination and promote sustainable ecosystem services. The data collected in 2012 and 2014 was the first comprehensive spatial and temporal analysis of Se in all environmental compartments (bird eggs, macroinvertebrates, plants, sediments, and water) of an arid wetland ecosystem in the Colorado Plateau. Water, sediment, and plant tissue samples were collected and analyzed to determine Se’s spatial and temporal variation in Pariette Wetlands. Se concentrations in water, sediment, and plants were evenly distributed throughout wetlands. No significant differences were found in plant Se concentrations between samples collected in 2012 (447 ± 44 ug kg−1) or 2014 (541 ± 42 μg kg−1), indicating that plant Se did not vary temporally during sampling. Aquatic plant species (e.g., pondweed (Potamogeton filiformis), 743 ± 66 μg kg−1 and watermilfoil (Myriophyllum spicatum), 874 ± 122 μg kg−1) accumulated more Se than plant species growing at the edges of the ponds (e.g., hardstem bulrush (Schoenoplectus acutus), 368 ± 37 μg kg−1 and cattail (Typha), 420 ± 43 μg kg−1). Plant roots (1045 ± 110 μg kg−1) accumulated more Se than aboveground vegetation (flowers, 228 ± 17 μg kg−1 or stems, 224 ± 19 μg kg−1). Relative to Se retained by sediments (75%), plants were not an extensive reservoir of wetland Se (<5%) but still may pose a risk to animals feeding on plant tissue. Thus, phytoremediation of Se does not appear to be a viable tool for Se mitigation in wetlands of arid climates with a short growing season, such as those located in the Colorado Plateau. Full article
(This article belongs to the Special Issue Constructed Wetlands and Nutrient Removal)
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15 pages, 3221 KiB  
Article
Effect of Temperature on Microorganisms and Nitrogen Removal in a Multi-Stage Surface Flow Constructed Wetland
by Huiyong Wang, Yongxin Xu and Beibei Chai
Water 2023, 15(7), 1256; https://doi.org/10.3390/w15071256 - 23 Mar 2023
Cited by 12 | Viewed by 2710
Abstract
The effect of low temperature on microbial nitrogen metabolism in constructed wetlands has yet to be extensively investigated. In this study, we analyzed the effects of temperature changes on nitrogen-associated microorganisms and nitrogen metabolism functional genes in a multi-stage surface flow constructed wetland [...] Read more.
The effect of low temperature on microbial nitrogen metabolism in constructed wetlands has yet to be extensively investigated. In this study, we analyzed the effects of temperature changes on nitrogen-associated microorganisms and nitrogen metabolism functional genes in a multi-stage surface flow constructed wetland (MSSFCW) using metagenomic sequencing. The treatment of polluted river water in the MSSFCW, which had a mean water temperature (MWT) of ≤17 °C, resulted in a low removal efficiency (RE) for total nitrogen (TN; average RE: 23.05% at 1–17 °C) and nitrate nitrogen (NO3−-N; average RE: −2.41% at 1–17 °C). Furthermore, at a MWT of ≤11 °C, the REs were low for ammonium nitrogen (NH4+-N; average RE: 67.92% at 1–11 °C) and for chemical oxygen demand (COD; average RE: 27.45% at 1–11 °C). At 0.24 m3 m−2 d−1 influent load, the highest REs for TN (66.84%), NO3−-N (74.90%), NH4+-N (83.93%), and COD (52.97%) occurred in July and August, when water temperatures were between 26 and 28 °C. The lowest rates (TN: 11.90%, NO3−-N: −21.98%, NH4+-N: 65.47%, COD: 24.14%) occurred in the January–February period, when the water temperature was lowest (1–5 °C). A total of 25 significantly different species were detected in surface sediment, none of which were dominant species. The dominant phyla and genera at low (January) and high (July) temperatures were similar; however, microorganisms were more abundant in the low-temperature months. Our analysis indicated that the same nitrogen metabolism pathways occurred in January and July. Denitrification-associated functional genes were the most abundant; nitrification-related functional genes were the least abundant. Only nirBD displayed significantly different abundances between January and July. This paper can hopefully help researchers and managers further understand how temperature affects nitrogen removal performance in constructed wetlands. Full article
(This article belongs to the Special Issue Constructed Wetlands and Nutrient Removal)
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