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Water Quality, Wastewater Treatment and Water Recycling, 2nd Edition
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Water Quality, Wastewater Treatment and Water Recycling, 2nd Edition

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: 10 June 2026 | Viewed by 3858

Special Issue Editor

Prof. Dr. Memory Tekere

E-Mail Website
Guest Editor
College of Agriculture and Environmental Sciences, Department of Environmental Sciences, University of South Africa, Johannesburg 1710, South Africa
Interests: applied and environmental microbiology; water quality; wastewater treatment; environmental pollution; metagenomics; microbial ecology; ecotoxicology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Water quality, wastewater treatment and water reuse continue to be topical issues requiring research attention and innovations amidst the various complexities of pollution, supply and demand, sustainability requirements, population growth, urbanisation, industrialisation and climate change. This Special Issue seeks to publish advanced topical and ground-breaking research articles highlighting research on water quality, exploring pollution, monitoring, emerging pollutants in water and wastewater, antimicrobial resistance, risk assessment, wastewater treatment processes, water reuse and risks. Research papers considering the application of artificial intelligence in wastewater treatment processes, modelling and process management will also be considered. As new and emerging pollutants are acknowledged in water and wastewater, water quality and wastewater treatment processes are equally impacted, and research addressing this issue is vital for environmental and human health protection. Alternatively, with increased water demand, water reuse occupies a key position in conserving and supplementing water requirements for various applications. Papers demonstrating advances in wastewater treatment to deliver good-quality water for reuse are also welcome in this Special Issue. Overall, this Special Issue will consider the latest research articles on topics including, but not limited to, the following: 

  • Water quality, pollution, monitoring, emerging contaminants, antimicrobial risks, climate change impacts;
  • Wastewater treatment and novel technologies;
  • Treatment of different water effluents including technologies for the removal of emerging pollutants;
  • Artificial intelligence in water quality and wastewater treatment;
  • Wastewater treatment and valorisation;
  • Wastewater recycling, reuse, and risk concerns.

Prof. Dr. Memory Tekere
Guest Editor

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

  • water quality
  • emerging contaminants
  • treatment processes
  • water reuse
  • SDG6.3
  • waste effluent valorisation
  • innovations
  • advanced technology
  • pathogens
  • AI in wastewater issues

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Further information on MDPI's Special Issue policies can be found here.

Related Special Issue

Published Papers (4 papers)

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Research

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17 pages, 2501 KB  
Article
Spectral Quasi-Linearization Analysis of Nonlinear Contaminant Transport in a Porous Channel with Generalized Haldane Kinetics
by Unyime V. Johnson, Samuel O. Adesanya and Ramoshweu S. Lebelo
Water 2026, 18(7), 842; https://doi.org/10.3390/w18070842 - 1 Apr 2026
Viewed by 419
Abstract
The increasing presence of biological contaminants in wastewater poses serious challenges to safe water reuse and sustainable management. The effects of filtration on pollutant transport in a vertical porous channel are investigated mathematically and numerically in this work, taking into account nonlinear microbial [...] Read more.
The increasing presence of biological contaminants in wastewater poses serious challenges to safe water reuse and sustainable management. The effects of filtration on pollutant transport in a vertical porous channel are investigated mathematically and numerically in this work, taking into account nonlinear microbial growth controlled by generalized Haldane kinetics. Key characteristics, including viscosity, density, and diffusivity, are supposed to change nonlinearly with contaminant concentration, and the fluid is described as incompressible and dilatant. The Bivariate Spectral Quasi-Linearization Method (BSQLM) is used to solve the resulting system of nonlinear partial differential equations, and the Bivariate Spectral Chebyshev Collocation Method (BSCCM) is used for validation. The findings show that while higher inhibition and liquid–biofilm mass transfer coefficients successfully control pollutant concentration, porous filtration dramatically lowers flow velocity due to increased resistance and bio-clogging. With few residual errors, the numerical scheme exhibits great accuracy and quick convergence. Overall, the study establishes that coupling filtration mechanisms with generalized biokinetic models provides a robust framework for predicting contaminant behavior and enhancing the design of efficient wastewater treatment and reuse systems. Full article
(This article belongs to the Special Issue Water Quality, Wastewater Treatment and Water Recycling, 2nd Edition)
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19 pages, 7804 KB  
Article
Wetland Landscape Response to Partially Treated Sewage in Unconstrained Systems
by R. Eugene Turner, James E. Bodker and Christopher Schulz
Water 2026, 18(3), 418; https://doi.org/10.3390/w18030418 - 5 Feb 2026
Viewed by 522
Abstract
We conducted a long-term assessment of how natural free-water surface (FWS) wetlands respond to sustained loads of partially treated municipal effluent. We quantified the effects on vegetative cover, ammonium concentration, and fecal coliform bacteria densities and compared them to constructed wetlands with hydrologically [...] Read more.
We conducted a long-term assessment of how natural free-water surface (FWS) wetlands respond to sustained loads of partially treated municipal effluent. We quantified the effects on vegetative cover, ammonium concentration, and fecal coliform bacteria densities and compared them to constructed wetlands with hydrologically defined flows. Variations in the area of open water and floating vegetation converted from emergent marsh, shrub or bottomland hardwood forest (0 to 124.6 ha) were directly proportional to the nitrogen loading at all eight sites (range 5.4 to 24.6 thousand Kg N yr−1). Trees exposed to effluent at five locations sometimes died in the first year, or they took decades to die. At the one location with fecal coliform data, their densities were directly related to ammonium concentrations, which were within the concentration range of untreated municipal sewage water. Ammonium levels exceeded US EPA chronic toxicity standards at three locations and aquatic toxicity levels developed by independent scientists at all eight locations. The loss of organic peat and habitat has multiple consequential effects that may be quick to happen or subtle, and be slow to restore, if at all. Compared to constructed wetland treatment systems, FWS systems are more difficult to constrain, have much reduced predictabilities and bring unwelcome consequences. Full article
(This article belongs to the Special Issue Water Quality, Wastewater Treatment and Water Recycling, 2nd Edition)
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24 pages, 2719 KB  
Article
Preliminary Study of Potential Hydrocarbon-Degrading Bacteria Identified by 16S rRNA Sequencing in Haina Port Water Samples, Dominican Republic
by Yameiri Mena, Jose Navarro-Pedreño, José David Hernández-Martich, Manuel M. Jordán, Víctor Sala-Sala, Ignacio Gómez-Lucas and Ana Pérez-Gimeno
Water 2026, 18(3), 307; https://doi.org/10.3390/w18030307 - 25 Jan 2026
Viewed by 1213
Abstract
Microorganisms live in a wide range of environments, performing diverse roles either independently or in association with other organisms forming consortia. This study is focused on those with the ability to bioremediate environments contaminated with petroleum hydrocarbons (PHCs), that is, the case of [...] Read more.
Microorganisms live in a wide range of environments, performing diverse roles either independently or in association with other organisms forming consortia. This study is focused on those with the ability to bioremediate environments contaminated with petroleum hydrocarbons (PHCs), that is, the case of bacteria, fungi, algae, and consortia. PHC contamination constitutes a major global environmental issue, and presents a serious ecological risk. This research was conducted in the coastal waters of Haina Port (Dominican Republic) and the main objective was to characterise the bacterial communities with bioremediation capacity by sequencing the 16S rRNA. The samples were collected in sterile conditions, and physicochemical and molecular analyses were conducted. The results revealed the composition and distribution of bacterial communities in the area. At the phylum level, Proteobacteria is the dominant group, accounting for 70–90% of the community. At the class level, Gammaproteobacteria is the predominant group, followed by Alphaproteobacteria which ranks second in relative abundance. Bacillaceae appears as the most abundant family at most points. This 16S rRNA survey provides a taxonomic baseline of the microbial community, identifying taxa with documented degradative potential. Future functional analyses and culture studies are required to quantify and confirm the active metabolic pathways of the detected microorganisms. Full article
(This article belongs to the Special Issue Water Quality, Wastewater Treatment and Water Recycling, 2nd Edition)
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Review

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29 pages, 742 KB  
Review
A Review of Modeling Approaches and Key Parameters in the Simulation of Wastewater Treatment Plants
by Marija Lazarevikj, Radmila Koleva, Emil Zaev, Darko Babunski and Zoran Markov
Water 2026, 18(2), 266; https://doi.org/10.3390/w18020266 - 20 Jan 2026
Viewed by 1164
Abstract
Besides the purification process in the wastewater treatment plant that includes mechanical, biological, and chemical approaches, analysis of hydraulic behavior is also fundamental. This means developing a digital replica of the physical process by simulating the hydraulic parameters. Studying fluid behavior in the [...] Read more.
Besides the purification process in the wastewater treatment plant that includes mechanical, biological, and chemical approaches, analysis of hydraulic behavior is also fundamental. This means developing a digital replica of the physical process by simulating the hydraulic parameters. Studying fluid behavior in the plant enables process optimization, improves plant behavior, prevents equipment malfunctions, and more. This paper focuses on defining the concept of a wastewater treatment plant prototype, simulating it, and identifying the available and most suitable software that enables efficient process simulation and validation. The hydraulic parameters, as per the literature review and the proposed concept, that will be simulated are pressure, flow, pressure drop, and water level. MATLAB/Simulink and Python programming languages are considered the most suitable software/programming languages for hydraulic parameters simulation. Full article
(This article belongs to the Special Issue Water Quality, Wastewater Treatment and Water Recycling, 2nd Edition)
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