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Water
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Wastewater Treatment Methods, Techniques and Processes
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Wastewater Treatment Methods, Techniques and Processes

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

Deadline for manuscript submissions: closed (25 September 2023) | Viewed by 2534

Special Issue Editor

Dr. Daniela Fighir

E-Mail Website
Guest Editor
Department of Environmental Engineering and Management, Gheorghe Asachi Technical University of Iasi, Iasi, Romania
Interests: wastewater treatment; wastewater recycling and reuse; sustainability assessment; energy assessment and GHG; circular economy

Special Issue Information

Dear Colleagues,

Water is not only a vital resource for health, economic and social development, but also for the conservation of ecosystems. Water quality targets may be achieved by reducing industrial, agricultural and municipal pollution. Therefore, to ensure the availability and sustainable management of water and sanitation for all, according to Sustainable Development Goal 6, it is necessary to develop new environmentally friendly methods and materials that can be used for pollutant removal, especially emerging pollutants, from wastewater.

The aim of this Special Issue is to provide original research and review articles on the new methods, technologies and processes related to wastewater treatment.

Potential topics of original research or review articles may include, but are not limited to, the following:

- Recent advances in wastewater treatment technology;

- The development of novel materials for pollutant removal from wastewater;

- Municipal or industrial wastewater treatment processes such as membranes, advanced oxidation, biological, sorption, etc.

-Sludge management and valorization.

Dr. Daniela Fighir
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 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

  • advanced wastewater treatment
  • innovative materials
  • municipal or industrial wastewater
  • sludge management
  • emerging pollutants

Published Papers (2 papers)

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Research

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14 pages, 2823 KiB  
Article
Visible-Light-Driven Photocatalytic Degradation of High-Concentration Ammonia Nitrogen Wastewater by Magnetic Ferrite Nanosphere Photocatalysts
by Xianyong Guo, Fan Gao, Haoxuan Cui, Jiaxuan Liu, Hairong Wang, Lixin Liang, Yinghai Wu, Li Wan, Jing Wang, Cuiya Zhang and Guangjing Xu
Water 2023, 15(20), 3638; https://doi.org/10.3390/w15203638 - 17 Oct 2023
Cited by 1 | Viewed by 1174
Abstract
In this study, magnetic CuFe2O4, MgFe2O4, and ZnFe2O4 nanosphere photocatalysts were prepared by the sol–gel method at 300 °C, 400 °C, and 500 °C, respectively (named as CF300, CF400, CF500, MF300, MF400, [...] Read more.
In this study, magnetic CuFe2O4, MgFe2O4, and ZnFe2O4 nanosphere photocatalysts were prepared by the sol–gel method at 300 °C, 400 °C, and 500 °C, respectively (named as CF300, CF400, CF500, MF300, MF400, MF500, ZF300, ZF400, and ZF500). The characterization by X-ray diffraction (XRD) revealed that the optimal calcination temperature was 400 °C. Then, CF400, MF400, and ZF400 were used to treat high-concentration ammonia nitrogen wastewater (HCAW, 1000 mg/L) at different pH levels. The result showed that the optimal pH for CF400, MF400 and ZF400 to degrade HCAW was 9.0, and CF400 required a shorter illumination time (80 min) than MF400 and ZF400 (120 min) to completely remove ammonia nitrogen from HCAW. However, CF400 was unstable and decomposed, and a blue substance was observed during the magnetic recovery experiment. The recovery rate of ZF400 (66.7%) was higher than MF400 (53.2%) with no decomposition phenomenon, and the ammonia nitrogen removal rate of ZF400 remained above 90% after five cycles. Additionally, the ammonia nitrogen removal rate of ZF400 could reach 80.2% when the ammonia nitrogen concentration was as high as 5000 mg/L. Therefore, compared with CF400 and MF400, ZF400 was more suitable for treating HCAW. Full article
(This article belongs to the Special Issue Wastewater Treatment Methods, Techniques and Processes)
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Review

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23 pages, 5441 KiB  
Review
Statistical Methods and Models for Pollutant Control in Municipal Surface Waters
by Irina Meghea
Water 2023, 15(23), 4178; https://doi.org/10.3390/w15234178 - 3 Dec 2023
Cited by 1 | Viewed by 1160
Abstract
This paper aims to systematize a series of statistical methods of analysis and control and proposes some forecast models for surface water pollution both in and near a large city. The monitoring data of heavy metals, nitrites, and phosphates collected for three years [...] Read more.
This paper aims to systematize a series of statistical methods of analysis and control and proposes some forecast models for surface water pollution both in and near a large city. The monitoring data of heavy metals, nitrites, and phosphates collected for three years are processed using different statistical tools. It is demonstrated that they are under statistical control, and appropriate mathematical models are formulated to allow for forecasting and understanding of the causes of the appearance and perpetuation of certain phenomena. A comparative analysis is made, and the generalization of some methods is considered as an analysis and control tool. Full article
(This article belongs to the Special Issue Wastewater Treatment Methods, Techniques and Processes)
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