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Water
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Innovative Technologies for Low-Carbon Biological Treatment of Wastewater
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Innovative Technologies for Low-Carbon Biological Treatment of Wastewater

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 2695

Special Issue Editors

Prof. Min Ji

E-Mail Website
Guest Editor
School of Environment Science and Engineering, Tianjin University, Tianjin 300350, China
Interests: wastewater treatment and reuse; bio-electrochemical technology for wastewater treatment; water and wastewater infrastructure
Special Issues, Collections and Topics in MDPI journals
Dr. Ruying Li

E-Mail Website
Guest Editor
School of Environment Science and Engineering, Tianjin University, Tianjin 300350, China
Interests: biological wastewater treatment; anaerobic digestion; wastewater pollution control and resource recovery; bioelectrochemical technology; control of emerging pollutants
Special Issues, Collections and Topics in MDPI journals
Dr. Siyuan Zhai

E-Mail Website
Guest Editor
Research Center for Eco-Environmental Science, China Academy of Science, Beijing 100085, China
Interests: environmental biotechnology; biological wastewater treatment; bioremediation; nutrient removal and recovery
Dr. Chiqian Zhang

E-Mail Website
Guest Editor
Department of Civil and Environmental Engineering, Southern University and A&M College, Baton Rouge, LA 70813, USA
Interests: biological wastewater treatment; biofilms; bacteriophage; safe drinking water supply; opportunity pathogens; drinking water disinfection by-products; environmental microbiology; environmental biotechnology; water and wastewater disinfection; anaerobic digestion; municipal solid waste treatment and management; harmful algal blooms
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Effective wastewater treatment is one of the key issues for water pollution control. Biological wastewater treatment is a mature, stable, and widely used process, which can effectively remove organic matter, nitrogen, phosphorus, and other pollutants. However, conventional biological wastewater treatment technologies consume high energy and emit greenhouse gases, such as carbon dioxide, methane, and nitrous oxide. Facing increasingly strict wastewater discharge standards and serious global warming issues, it is necessary to improve biological wastewater treatment technologies to meet the requirements of energy saving, low-carbon operation, and carbon neutrality.

This Special Issue aims to gather the latest research advances in low-carbon-based biological wastewater treatment technologies, including the innovative technologies related to organic and nutrient removal processes with high efficacy and low resource consumption, effective resource recovery and reuse from wastewater, biological control of emerging pollutants, and reduction of greenhouse gas emission.  Topics of interest include but are not limited to: 

  • Combined autotrophic-heterotrophic nitrogen removal for ammonia-laden wastewater;
  • Reducing carbon emission during the biological treatment of a low ratio of C/N wastewater;
  • Anaerobic Ammonium Oxidation (ANAMMOX) under the ambient or low temperatures;
  • Anaerobic membrane bioreactor (AMBR) technology for municipal wastewater treatment;
  • Recovery of carbon, nitrogen, and phosphorus during biological wastewater treatment;
  • Directional biological conversion of pollutants for resource recovery;
  • Bioelectrochemical technologies;
  • Biological control of emerging pollutants, such as antibiotics, antibiotics resistance genes, and pharmaceuticals and personal care products (PPCPs);
  • Enhanced biological-ecological purification of polluted water bodies;
  • Control of greenhouse gas emissions during biological wastewater treatment;
  • Novel biological treatment technologies for the treatment of high-strength wastewater such as livestock wastewater.

Prof. Min Ji
Dr. Ruying Li
Dr. Siyuan Zhai
Dr. Chiqian Zhang
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

  • autotrophic-heterotrophic nitrogen removal
  • carbon emission
  • anaerobic ammonium oxidation
  • nutrient removal
  • bioelectrochemistry
  • carbon-neutral
  • greenhouse gases
  • emerging pollutants
  • reclamation and reuse
  • resource recovery

Published Papers (2 papers)

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Research

16 pages, 3392 KiB  
Article
Effects of Elevated Fe (III) on Anaerobic Ammonia Oxidation Biofilm Process: Inhibition and Recovery
by Shuya Wang, Fen Wang, Ruying Li and Min Ji
Water 2023, 15(23), 4080; https://doi.org/10.3390/w15234080 - 24 Nov 2023
Viewed by 865
Abstract
To investigate the treatment performance of employing the anaerobic ammonia oxidation (anammox) biofilm process to treat the iron-containing industrial wastewater with a low carbon–nitrogen ratio and obtain an optimal condition, the effects of elevated exposure to Fe (III) (ranging from 0 to 1.5 [...] Read more.
To investigate the treatment performance of employing the anaerobic ammonia oxidation (anammox) biofilm process to treat the iron-containing industrial wastewater with a low carbon–nitrogen ratio and obtain an optimal condition, the effects of elevated exposure to Fe (III) (ranging from 0 to 1.5 mM) on the anammox biofilm process were explored. The findings indicated that the performance of anammox nitrogen removal remained unaffected when exposed to low levels of Fe (III) (0.1 mM and 0.3 mM). However, high concentrations (higher than 0.5 mM) showed a negative effect. The semi-inhibitory concentration (IC50) of Fe (III) was 1.32 mM. Additionally, under exposure to high levels of Fe (III), a remarkable accumulation of Fe (III) was observed within the anammox system. The total iron concentration increased from 30 mgFe·gVSS−1 to a saturation point of approximately 300 mgFe·gVSS−1. This accumulation led to a decrease in extracellular polymeric substance (EPS) from 221.4 mg·gVSS−1 to 91.3 mg·gVSS−1 and specific anammox activity (SAA) from 0.0482 gN·(gVSS·d)−1 to 0.018 gN·(gVSS·d)−1. Consequently, the activity of anammox bacteria (AnAOB) was inhibited, leading to a decline in the average total nitrogen removal efficiency (TNRE) from 86.9% to 38.3%. However, it was discovered that the inhibitory effect of continuous Fe (III) could be reversed by introducing the ferric ion complex EDTA·2Na into the system. As a result, the TNRE recovered to 60%. The findings would be useful to optimize the anammox biofilm process by adjusting the concentration of Fe (III) in the practical industrial application. Full article
(This article belongs to the Special Issue Innovative Technologies for Low-Carbon Biological Treatment of Wastewater)
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17 pages, 3999 KiB  
Article
Effect of Sulfur Autotrophic Denitrification Sludge on the Start-Up Characteristics of Anaerobic Ammonia Oxidation
by Kunming Fu, Zhixue Zeng and Shaowei Huang
Water 2023, 15(7), 1275; https://doi.org/10.3390/w15071275 - 24 Mar 2023
Cited by 1 | Viewed by 1451
Abstract
In this study, we used a two-stage experiment in order to investigate the effect of the inoculation with elemental sulfur-based autotrophic denitrification (S0-SADN) sludge on the start-up characteristics of Anaerobic ammonia oxidation (ANAMMOX). In the first stage, we attempted direct enrichment [...] Read more.
In this study, we used a two-stage experiment in order to investigate the effect of the inoculation with elemental sulfur-based autotrophic denitrification (S0-SADN) sludge on the start-up characteristics of Anaerobic ammonia oxidation (ANAMMOX). In the first stage, we attempted direct enrichment with an elemental sulfur and pyrite filler in a S0-SADN reactor, which retained stable operation, and adjusted the nitrogen source components of the influent at different times. In the second stage, we replaced the original filler with Kaldnes filler, and set the influent component to be divided into NH4+-N and NO2−-N. The ANAMMOX process could not be started in the 80-day S0-SADN stage despite the 0.8% abundance of Candidatus Kuenenia; however, after changing the original filler, the reactor showed obvious ANAMMOX reaction characteristics after day 44, and under the condition of an influent TIN load of 0.36 kg(m3·d)−1, the reactor TIN removal rate was stable at more than 80% after day 55. The main ANAMMOX bacteria in the reactor were Candidatus Brocadia (1.08%) and Candidatus Kuenenia (0.96%). The results show that it is feasible to initiate the ANAMMOX process by inoculating the S0-SADN sludge; however, it is not suitable to start the ANAMMOX and the stable operation of the S0-SADN simultaneously. The ANAMMOX process can be started first under the condition of no sulfur source, which takes little time. After initiating the ANAMMOX process, the coupling S0-SADN process can be re-considered given an excessive accumulation of S0-SADN bacteria in the system. Full article
(This article belongs to the Special Issue Innovative Technologies for Low-Carbon Biological Treatment of Wastewater)
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