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Applied Sciences
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Innovative Water and Wastewater Treatment Technologies for Supporting Global Sustainability...
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Innovative Water and Wastewater Treatment Technologies for Supporting Global Sustainability 2020

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Chemical and Molecular Sciences".

Deadline for manuscript submissions: closed (31 December 2020) | Viewed by 5644

Special Issue Editor

Prof. Dr. Hyunook Kim

E-Mail Website
Guest Editor
Department of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea
Interests: water and wastewater treatment; analysis of microplastics in the environment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is estimated that the world’s population will reach 8.6 billion by mid-2030, and that approximately 60% will live in urban areas. Along with the population growth, it is expected that water and electricity demand will also increase by 30–50%. Accordingly, more wastewater will be generated and discharged, potentially contaminating water sources. In order to sustain the ever-growing global population and society, water should be properly purified before it is supplied, and contaminants in used water should be properly removed before the water is discharged into the environment. Especially, wastewater should be well-treated and discharged, since it can be a source of pollutants entering into drinking water systems.

Treating water and wastewater demands a significant quantity of energy input, placing a financial burden on society. Especially in developing countries, water and wastewater are not properly treated simply due to economic constraints. Therefore, cost- and energy-efficient water and wastewater treatments have become an important topic for the scientific community. Innovation should be created in water or wastewater treatment technology to economically remove both macro- and micro-pollutants from water, produce pristine potable water, without any negative impact on the environment.

Therefore, we would like to call for papers for this Special Issue under the title “Innovative Water and Wastewater Technologies for Supporting Global Sustainability”. Potential topics for this Special Issue include but are not restricted to the following:

  • Assessment of environmental and health risks caused by chemical pollutants in drinking water and wastewater;
  • Treatment of conventional and new organic/inorganic pollutants in water;
  • Fate of CECs in water and wastewater treatment processes;
  • Energy-efficient treatment technologies for nitrogen and/or phosphorus in wastewater;
  • Automatic control of water and wastewater treatment processes for nitrogen and/phosphorus;
  • Economic analysis of water/wastewater infrastructure;

Strategy for improving sustainability of water/environment.

Prof. Dr. Hyunook Kim
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. Applied Sciences 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 2400 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 treatment,
  • wastewater treatment,
  • compounds of emerging concerns,
  • water–energy nexus,
  • sustainability

Published Papers (2 papers)

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Research

16 pages, 3161 KiB  
Article
Application of Computational Fluid Dynamics in Chlorine-Dynamics Modeling of In-Situ Chlorination Systems for Cooling Systems
by Jongchan Yi, Jonghun Lee, Mohd Amiruddin Fikri, Byoung-In Sang and Hyunook Kim
Appl. Sci. 2020, 10(13), 4455; https://doi.org/10.3390/app10134455 - 28 Jun 2020
Cited by 1 | Viewed by 2042
Abstract
Chlorination is the preferred method to control biofouling in a power plant cooling system due to its comparative effectiveness and low cost. If a power plant is located in a coastal area, chlorine can be electrochemically generated in-situ using seawater, which is called [...] Read more.
Chlorination is the preferred method to control biofouling in a power plant cooling system due to its comparative effectiveness and low cost. If a power plant is located in a coastal area, chlorine can be electrochemically generated in-situ using seawater, which is called in-situ electro-chlorination; this approach has several advantages including fewer harmful chlorination byproducts and no need for chlorine storage. Nonetheless, this electrochemical process is still in its infancy in practice. In this study, a parallel first-order kinetics was applied to simulate chlorine decay in a pilot-scale cooling system. Since the decay occurs along the water-intake pipe, the kinetics was incorporated into computational fluid dynamics (CFD) codes, which were subsequently applied to simulate chlorine behavior in the pipe. The experiment and the simulation data indicated that chlorine concentrations along the pipe wall were incremental, even under the condition where a strong turbulent flow was formed. The fact that chlorine remained much more concentrated along the pipe surface than in the middle allowed for the reduction of the overall chlorine demand of the system based on the electro-chlorination. The cooling system, with an in-situ electro-chlorination, consumed only 1/3 of the chlorine dose demanded by the direct injection method. Therefore, it was concluded that in-situ electro-chlorination could serve as a cost-effective and environmentally friendly approach for biofouling control at power plants on coastal areas. Full article
(This article belongs to the Special Issue Innovative Water and Wastewater Treatment Technologies for Supporting Global Sustainability 2020)
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14 pages, 8386 KiB  
Article
Preliminary Study on Greywater Treatment Using Nonwoven Textile Filters
by Marcin Spychała and Thanh Hung Nguyen
Appl. Sci. 2019, 9(15), 3205; https://doi.org/10.3390/app9153205 - 6 Aug 2019
Cited by 4 | Viewed by 3177
Abstract
The objective of the study was to evaluate the usefulness of novel nonwoven textile filter technology for greywater treatment. This technology had already been used on a lab scale for septic tank effluent treatment; however, this study is the first time it has [...] Read more.
The objective of the study was to evaluate the usefulness of novel nonwoven textile filter technology for greywater treatment. This technology had already been used on a lab scale for septic tank effluent treatment; however, this study is the first time it has been used for greywater treatment. The set-up period with septic tank effluent (STE) feeding was significantly shorter than that of greywater feeding. The average capacities of both filter types were practically the same: 1.0–1.4 cm d−1. The relatively high efficiencies of chemical oxygen demand (CODCr) and biochemical oxygen demand (BOD5) removal (58.8–71.6% and 56.7–79.8%, respectively) were obtained thanks to the relatively low filtration velocity and effective diffusion of atmospheric air into the greywater. The relatively high efficiency of total suspended solids (TSS) removal (67.0–88.4%) was obtained by reducing the effective pore size of the filtration layer due to high biomass concentration and accumulation of suspended solids. Thanks to hydrostatic pressure, the filters can work practically with very low energy consumption. The pollutants removal efficiencies were satisfactory in respect to simple construction and maintenance, low investment and operational costs. Full article
(This article belongs to the Special Issue Innovative Water and Wastewater Treatment Technologies for Supporting Global Sustainability 2020)
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