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Energies
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Advanced Technologies for Centralized Water and Wastewater Treatment
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Advanced Technologies for Centralized Water and Wastewater Treatment

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "B: Energy and Environment".

Deadline for manuscript submissions: closed (31 January 2021) | Viewed by 9212

Special Issue Editors

Dr. Madhumita Ray

E-Mail Website
Guest Editor
Department of Chemical and Biochemical Engineering, Western University, London, ON, Canada
Interests: advanced treatment technologies for water and waste treatment; environmental modelling
Special Issues, Collections and Topics in MDPI journals
Dr. Siva Sarathy

E-Mail Website
Guest Editor
Trojan Technologies, London, ON, Canada
Interests: advanced treatment technologies for water and waste treatment
Dr. Pankaj Chowdhury

E-Mail Website1 Website2
Guest Editor
Trojan Technologies London, ON, Canada/Department of Chemical and Biochemical Engineering, Western University, London, ON, Canada
Interests: advanced treatment technologies for water and waste treatment; removal of TOrCs/micropollutants with UV-based processes; sustainable development

Special Issue Information

Dear Colleagues,

Currently, about 55% of the world’s population lives in urban areas or cities, and this figure is expected to rise to 70% in the coming decades. This high density of human activity warrants the need for large, centralized facilities for water and wastewater treatment, in order to take maximum advantage of economies of scale. Aging infrastructure, population growth, and climate change are major drivers forcing municipalities to upgrade, expand, or replace existing centralized water and wastewater treatment facilities with smaller energy, carbon, and water footprints. In addition, increasingly, wastewater treatment facilities are required to recover resources such as nutrient, energy, organics, and metals from wastewater.

While much effort is devoted to developing low-cost, sustainable, resilient technologies for small, decentralized water treatment and pollution control, there is a pressing need to innovate and demonstrate technologies to be implemented in large-scale treatment plants, serving a major part of humankind. In order to be adopted, these technologies need to be cost-effective, energy-efficient, reliable, and resilient, and validated to meet the strictest regulatory requirements.

This Special Issue is focused on bringing together innovative developments, technologies, and solutions in the field of centralized water and wastewater treatment.

Dr. Madhumita Ray
Dr. Siva Sarathy
Dr. Pankaj Chowdhury
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. Energies 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

  • Innovative bio-processes
  • Advances in membrane science
  • Advanced oxidation processes
  • Emerging disinfection alternatives
  • Innovation in resource recovery processes
  • Process economics

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Published Papers (3 papers)

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Research

12 pages, 1559 KiB  
Article
Intensification of Short Chain Fatty Acid Production during the Alkaline Pretreatment of Fine-Sieving Fractions
by Yanqing Duan, Aijuan Zhou, Xiuping Yue, Zhichun Zhang, Yanjuan Gao and Yanhong Luo
Energies 2020, 13(18), 4690; https://doi.org/10.3390/en13184690 - 9 Sep 2020
Cited by 3 | Viewed by 1876
Abstract
Maximizing the internal carbon sources in raw wastewater was found to be an alternative option to alleviate the financial burden in external carbon sources (ECS) addition to the biological nutrient removal (BNR) process. Based on previous studies on particulate recovery via fine-sieving technologies, [...] Read more.
Maximizing the internal carbon sources in raw wastewater was found to be an alternative option to alleviate the financial burden in external carbon sources (ECS) addition to the biological nutrient removal (BNR) process. Based on previous studies on particulate recovery via fine-sieving technologies, alkali pretreatment was used to improve the short-chain fatty acid (SCFA) production from the fine-sieving fractions (FSF). Hydrolysis performance and methane production were monitored to evaluate the reasons for the SCFA boost. Besides, the microbial community structure was evaluated by high-throughput sequencing. Furthermore, mass balance and financial benefits were preliminarily estimated. The results showed that alkali pretreatment effectively promoted the generation of SCFAs with 234 mg/g volatile suspended solids (VSS), almost double that of the control test. This was partially attributed to the efficient hydrolysis, with soluble polysaccharides and protein increased by 2.1 and 1.2 times compared to that of the control, respectively. Inhibition of methanogens was also devoted to the accumulation of SCFAs, with no methane production until 150 h at high pH value. Finally, a preliminary evaluation revealed that 44.51 kg/d SCFAs could be supplied as the electron donor for denitrification, significantly reducing the cost in ECS addition for most wastewater treatment plants (WWTPs) with carbon insufficiency. Full article
(This article belongs to the Special Issue Advanced Technologies for Centralized Water and Wastewater Treatment)
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14 pages, 3373 KiB  
Article
Enhanced Acetogenesis of Waste Activated Sludge by Conditioning with Processed Organic Wastes in Co-Fermentation: Kinetics, Performance and Microbial Response
by Yu Zhang, Rui Sun, Cristiano Varrone, Yaoli Wei, Alimzhanova Shyryn, Aijuan Zhou and Jie Zhang
Energies 2020, 13(14), 3630; https://doi.org/10.3390/en13143630 - 14 Jul 2020
Cited by 10 | Viewed by 3908
Abstract
Aimed at the low ratio of carbon and nitrogen (C/N, approximately 7/1) of waste activated sludge (WAS), which would inhibit the acetogenesis process during anaerobic fermentation, this study introduced three brewing wastes, including vinegar (VR), stillage (SR) and soy sauce (SSR) residues, to [...] Read more.
Aimed at the low ratio of carbon and nitrogen (C/N, approximately 7/1) of waste activated sludge (WAS), which would inhibit the acetogenesis process during anaerobic fermentation, this study introduced three brewing wastes, including vinegar (VR), stillage (SR) and soy sauce (SSR) residues, to promote acetogenesis by co-fermenting with WAS. Results showed that different brewing wastes contributed differently to the volatile fatty acids (VFAs) yield. The best performance was observed with SSR (4517 ± 367 mg COD/L), particularly rich in C2–C3 VFAs, corresponding to 40% and 52% higher concentrations than with SR and VR, respectively. Meanwhile, the hydrolysis rate constant peaked at 0.0059 h−1 in the SSR test, compared to the sole WAS test (0.0018 h−1). Furthermore, canonical correlation analysis reflected that the functional consortia, known to ferment saccharides/amino acids into C2–C3 VFAs (i.e., Proteiniclasticum, Petrimonas, Cloacibacillus and Gemmobacter), was related to the characteristics of the feedstock. Full article
(This article belongs to the Special Issue Advanced Technologies for Centralized Water and Wastewater Treatment)
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17 pages, 4462 KiB  
Article
Designing Control Strategies of Aeration System in Biological WWTP
by Robert Piotrowski and Tomasz Ujazdowski
Energies 2020, 13(14), 3619; https://doi.org/10.3390/en13143619 - 14 Jul 2020
Cited by 16 | Viewed by 2960
Abstract
The paper presents the complete design processes of novel aeration control systems in the SBR (sequencing batch reactor) wastewater treatment plant (WWTP). Due to large energy expense and a high influence on biological processes, the aeration system plays a key role in WWTP [...] Read more.
The paper presents the complete design processes of novel aeration control systems in the SBR (sequencing batch reactor) wastewater treatment plant (WWTP). Due to large energy expense and a high influence on biological processes, the aeration system plays a key role in WWTP operation. The paper considers the aeration system for a biological WWTP located in the northeast of Poland. This system consists of blowers, the main collector pipeline, three aeration lines with different diameters and lengths, and diffusers. Classical control systems applied for this type of installation are based on PID (proportional–integral–derivative) controllers, the settings of which are often found experimentally. The article presents the optimization of these settings and the design of an alternative control algorithm—the fuzzy controller. Full article
(This article belongs to the Special Issue Advanced Technologies for Centralized Water and Wastewater Treatment)
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