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Advances in Wastewater Treatment: Resources Recovery, Energy Neutralization and Water Reuse, 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: closed (31 August 2024) | Viewed by 4230

Special Issue Editors

Dr. Weihua Zhao

E-Mail Website
Guest Editor
1. Department of Environmental and Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
2. Harbin Institute of Technology (Weihai), Weihai 264209, China
Interests: biological nitrogen and phosphorus removal; resources recovery and energy neutralization; water environment protection and water ecological restoration; rural wastewater treatment; sludge treatment
Special Issues, Collections and Topics in MDPI journals
Dr. Lei Miao

E-Mail Website
Guest Editor
School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, China
Interests: study on biological treatment technology of wastewater
Dr. Bo Wang

E-Mail Website
Guest Editor
Colleage of Environmental science and engineering, Beijing University of Technology, Beijing 100124, China
Interests: nitrogen and phosphorus removal; anaerobic digestion; anammox; sludge fermentation
Special Issues, Collections and Topics in MDPI journals
Dr. Ji Zhao

E-Mail Website
Guest Editor
School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
Interests: simultaneous nitrogen and phosphorus removal; anammox

Special Issue Information

Dear Colleagues,

Organic and nutrient removal from wastewater plays an important role in water environment and ecological protection. Meanwhile, conventional biological wastewater treatment processes consume a lot of energy, carbon sources and chemicals and produce greenhouse gases. It is of great significance to realize “carbon neutralization” in wastewater treatment, and resource recovery, energy neutralization and water reuse will be the goal of wastewater treatment in the future. Relevant research has developed rapidly in recent years, such as anaerobic ammonia oxidation, denitrifying phosphorus removal, shortcut nitrification, partial denitrification and endogenous denitrification; phosphorus recovery in the form of blue iron ore and guano crystallization; energy saving through precise aeration and process control; organic and energy recovery by sludge fermentation, anaerobic methane production and sewage heat source pumps; water reclaimed by advanced oxidation, adsorption and membrane filtration; and carbon capture and storage through the symbiosis of bacteria, algae, etc. These new processes and technologies accelerate the realization of “carbon neutralization” in the field of wastewater treatment.

In order to trace the research progress of “carbon neutralization” in wastewater treatment, a Special Issue has been organized by Water. This Special Issue focuses on original articles or review articles related to “carbon neutralization” in wastewater treatment, including, but not limited to, the following:

  • Deep nitrogen and phosphorus removal from wastewater;
  • Recovery of resources and nutrients from wastewater;
  • Energy saving and recovery from wastewater treatment;
  • Directional conversion and recovery of organic matter, nitrogen and phosphorus in sludge;
  • Transformation and removal of new pollutants and refractory components;
  • Reclaimed water reuse;
  • Carbon capture and storage from wastewater treatment;
  • Carbon emission accounting and carbon reduction;
  • Energy consumption reduction and optimized control;
  • Agricultural non-point source pollution control and model optimization;
  • Advanced treatment technology;
  • Other related topics.

Dr. Weihua Zhao
Dr. Lei Miao
Dr. Bo Wang
Dr. Ji Zhao
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. 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

  • carbon neutralization
  • anammox
  • denitrifying phosphorus removal
  • shortcut nitrification
  • partial denitrification
  • process control
  • sludge fermentation
  • advanced oxidation
  • adsorption
  • membrane filtration
  • fertilization optimization
  • resources recovery

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Related Special Issue

Published Papers (3 papers)

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Research

15 pages, 3295 KiB  
Article
High-Efficiency Hydrogen Recovery from Corn Straw Hydrolysate Using Functional Bacteria and Negative Pressure with Microbial Electrolysis Cells
by Ravi Shankar Yadav, Weihua He, Dandan Liang, Chao Li, Yanling Yu, Kamran Ayaz and Yujie Feng
Water 2024, 16(17), 2423; https://doi.org/10.3390/w16172423 - 27 Aug 2024
Cited by 2 | Viewed by 881
Abstract
This study attempts to overcome the challenges associated with the degradation of complex organic substances like corn straw hydrolysate in hydrogen recovery by strategically enriching functional microbial communities in single-chamber cubic microbial electrolysis cells (MECs). We applied negative pressure, using acetate or xylose [...] Read more.
This study attempts to overcome the challenges associated with the degradation of complex organic substances like corn straw hydrolysate in hydrogen recovery by strategically enriching functional microbial communities in single-chamber cubic microbial electrolysis cells (MECs). We applied negative pressure, using acetate or xylose as electron donors, to mitigate the hydrogen sink issues caused by methanogens. This innovative method significantly enhanced MEC performance. MECs enriched with xylose demonstrated superior performance, achieving a hydrogen production rate 3.5 times higher than that achieved by those enriched with acetate. Under negative pressure, hydrogen production in N-XyHy10 reached 0.912 ± 0.08 LH2/L MEC/D, which was 6.7 times higher than in the passive-pressure MECs (XyHy10). This advancement also resulted in substantial increases in current density (73%), energy efficiency (800%), and overall energy efficiency (540%) compared with MECs operated under passive pressure with 10% hydrolysate feed. The enrichment of polysaccharide-degrading bacteria such as Citrobacter and Pseudomonas under negative pressure underscores the potential for their industrial application in harnessing complex organic substrates for bioenergy production in single-chamber MECs. This is a promising approach to scaling up bioenergy recovery processes. The findings of this research study contribute significantly to the field by demonstrating the efficacy of negative pressure in enhancing microbial activity and energy recovery, thereby offering a promising strategy for improving bioenergy production efficiency in industries. Full article
(This article belongs to the Special Issue Advances in Wastewater Treatment: Resources Recovery, Energy Neutralization and Water Reuse, 2nd Edition)
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14 pages, 3268 KiB  
Article
New Strategy to Maximize Phosphorus Utilization of Sewage Sludge Incineration Ash for Struvite Crystallization
by Nari Park, Miseon Kim, Jinhong Jung, Sanghoon Ji and Weonjae Kim
Water 2024, 16(12), 1682; https://doi.org/10.3390/w16121682 - 13 Jun 2024
Viewed by 892
Abstract
Struvite crystallization can recover nitrogen and phosphorus simultaneously from various kinds of wastewaters as a slow-release fertilizer. However, the enhancement of the removal efficiency of NH4-N is challenging because the molar concentration of NH4-N is higher than that of [...] Read more.
Struvite crystallization can recover nitrogen and phosphorus simultaneously from various kinds of wastewaters as a slow-release fertilizer. However, the enhancement of the removal efficiency of NH4-N is challenging because the molar concentration of NH4-N is higher than that of PO4-P in many types of sewage including digested sludge filtrate. In this study, phosphorus eluate was recovered from sewage sludge incineration ash (SSA) and applied to the struvite crystallization process to increase the removal efficiency of NH4-N for the digested sludge filtrate. Under acidic conditions, a maximum of 98.4% of phosphorus was eluted from SSA; in alkaline conditions, a maximum of 51.2% was eluted; and in sequential elution conditions with (NaOH+H2SO4), a maximum of 98.0% was eluted. Jar tests were performed by injecting three types of eluates (H2SO4 1 N_elulate, NaOH 1 N_elulate, and (NaOH+H2SO4)_eluate), and PO4-P was stably removed (>86%) under all tested conditions. When the NaOH 1 N_eluate was injected, the NH4-N removal efficiency was highest at 84.4%, followed by 78.4% with the (NaOH+H2SO4)_eluate, and 58.7% with the H2SO4 1 N_eluate at the molar ratio of Mg:P:N of 1.5:1.5:1. In addition, the sequential jar tests were conducted by injecting both the NaOH 1 N_eluate and (NaOH+H2SO4)_eluate. In the pH range of 8.5–9.5, the PO4-P and NH4-N removal efficiencies reached 92.3–94.5% and 97.9–99.1%, respectively. X-ray diffraction analyses confirmed that the majority of the crystal phases were struvite forms. Therefore, the combined application of both the NaOH 1 N_eluate and (NaOH+H2SO4)_eluate was adequate to enhance not only the phosphorus recovery but also the removal efficiencies of PO4-P and NH4-N. SSA recovering PO4-P could be utilized as a new phosphorus source in the struvite crystallization process. Full article
(This article belongs to the Special Issue Advances in Wastewater Treatment: Resources Recovery, Energy Neutralization and Water Reuse, 2nd Edition)
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20 pages, 3088 KiB  
Article
Assessment of Effluent Wastewater Quality and the Application of an Integrated Wastewater Resource Recovery Model: The Burgersfort Wastewater Resource Recovery Case Study
by Sekato Maremane, Gladys Belle and Paul Oberholster
Water 2024, 16(4), 608; https://doi.org/10.3390/w16040608 - 18 Feb 2024
Cited by 2 | Viewed by 1908
Abstract
Rivers in Africa have experienced dire pollution as a result of the poor management of wastewater effluent emanating from water resource recovery facilities (WRRFs). An integrated wastewater resource recovery model was developed and applied to identify ideal wastewater resource recovery technologies that can [...] Read more.
Rivers in Africa have experienced dire pollution as a result of the poor management of wastewater effluent emanating from water resource recovery facilities (WRRFs). An integrated wastewater resource recovery model was developed and applied to identify ideal wastewater resource recovery technologies that can be used to recover valuable resources from a mixture of wastewater effluents in a case study in the Burgersfort WRRF in the Limpopo province, South Africa. This novel model incorporates the process of biological nutrient removal (BNR) with an extension of conventional methods of resource recovery applicable to wastewater. The assessment of results of effluent quality from 2016 to 2022 revealed that ammonia, chemical oxygen demand, total coliform, fecal coliform, and Escherichia coli levels were critically non-compliant with the permissible effluent guidelines, indicating a stable upward trend in terms of concentrations, and scored a very bad wastewater quality index rating. All variables assessed showed a significant loading, except for orthophosphates, and significant correlations were observed among the variables. The results of the integrated wastewater resource recovery model revealed a high probability of reclaiming recoverable resources such as nutrients, sludge, bioplastics, biofuel, metals, and water from wastewater, which have economic, environmental, and social benefits, thereby improving the effluent quality of a WRRF. Full article
(This article belongs to the Special Issue Advances in Wastewater Treatment: Resources Recovery, Energy Neutralization and Water Reuse, 2nd Edition)
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