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Water
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Water Remediation, Reuse, and Resource Recovery: Toward Circular Water Systems
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Water Remediation, Reuse, and Resource Recovery: Toward Circular Water Systems

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

Deadline for manuscript submissions: 20 November 2026 | Viewed by 210

Editors

Dr. Anamika Kushwaha

E-Mail Website
Guest Editor
Center for Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
Interests: emerging pollutants; harmful algal bloom; circular bioeconomy; resource recovery; microbiome studies; bioremediation
Dr. Radha Rani

E-Mail Website
Guest Editor
Department of Biotechnology, Motilal Nehru National Institute of Technology, Prayagraj, India
Interests: bioremediation; biological wastewater treatment; microbiome studies; microbial fuel cell; heavy metals

Special Issue Information

Dear Colleagues,

Water scarcity, contamination by pollutants, and increasing pressure on freshwater resources demand innovative and sustainable solutions. This Special Issue focuses on cutting-edge research and integrated strategies for water remediation, reuse, and resource recovery, emphasizing interdisciplinary approaches that combine biological, chemical, and material-based technologies. The Special Issue aims to highlight advances in pollutant degradation, water reuse technologies, and circular water systems, bridging fundamental science with scalable and real-world applications.

Key Topics (but not limited to):

  • Biological and microbial remediation of water contaminants 
  • Advanced oxidation processes (AOPs) and photocatalysis 
  • Nanomaterials and hybrid catalytic systems for water treatment 
  • Algal-based systems for wastewater treatment and resource recovery 
  • Bioelectrochemical systems (MFCs, MECs) for water purification 
  • Water reuse and decentralized treatment systems 
  • Nutrient (N, P) recovery and circular water economy 
  • Integration of AI/ML/digital twins in water treatment
  • Environmental risk, toxicity, and sustainability assessment

Dr. Anamika Kushwaha
Dr. Radha Rani
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-anonymized 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

  • resource recovery
  • emerging contaminants
  • photocatalysis
  • bioremediation
  • circular bioeconomy
  • wastewater treatment
  • algal systems
  • advanced oxidation processes
  • sustainable water management

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Published Papers (1 paper)

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Research

32 pages, 2972 KB  
Article
Implementation of a Full-Scale Hybrid System for Rainwater Harvesting and Greywater Reuse to Reduce Water Consumption and Minimize Wastewater
by Jawer David Acuña-Bedoya, Edwin Alexis Fariz-Salinas and Miguel Ángel López Zavala
Water 2026, 18(16), 1938; https://doi.org/10.3390/w18161938 - 8 Aug 2026
Abstract
Implementation of real-scale systems for rainwater harvesting, treatment and reuse of greywater in residential areas is challenging because several factors should be considered for full adoption and satisfaction of decision-makers, urban developers and users. Technological, construction, operational, social (acceptance), impact on water resources, [...] Read more.
Implementation of real-scale systems for rainwater harvesting, treatment and reuse of greywater in residential areas is challenging because several factors should be considered for full adoption and satisfaction of decision-makers, urban developers and users. Technological, construction, operational, social (acceptance), impact on water resources, regulatory, and economic factors are involved. This study presents the implementation of a full-scale hybrid system for rainwater harvesting, treatment and reuse of greywater in a residential building located in Monterrey, Nuevo León, Mexico. The study included intervening in the hydraulic infrastructure of an already constructed residential building for collecting greywater, harvesting and collecting rainwater, designing and constructing an 80 m2 controlled natural soil treatment system (CNSTS) and a 65 m3 storage tank for treating and storing rain and greywater. Furthermore, the full-scale hybrid system was monitored under real operating conditions for a two-month period to assess its performance. Results showed that the CNSTS has the potential to replace up to 2835 m3 year−1 of potable water, equivalent to 65% of the building’s annual water consumption. The CNSTS achieved removal efficiencies of up to ~90% for Chemical Oxygen Demand, 90% for surfactants, and 50% for total nitrogen. Most of the measured parameters complied with the corresponding limits established by the Mexican standards NOM-003-SEMARNAT-1997 for non-potable water reuse, NOM-001-SEMARNAT-2021 for wastewater discharges, and NOM-127-SSA1-2021 for potable water with the exception of methylene blue active substances (surfactants), which exceeded the permissible limit during the initial monitoring stage, highlighting the need for further optimization of the system’s vegetative cover. Based on these findings, conceptual designs and preliminary evaluations were conducted for additional buildings, resulting in potable water substitution rates above 90% with investment payback periods of 2 to 5 years, depending on the water demand and the water catchment potential. Full article
(This article belongs to the Special Issue Water Remediation, Reuse, and Resource Recovery: Toward Circular Water Systems)
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