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Trends in Wastewater Treatment
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Trends in Wastewater Treatment

A special issue of International Journal of Environmental Research and Public Health (ISSN 1660-4601). This special issue belongs to the section "Environmental Science and Engineering".

Deadline for manuscript submissions: closed (15 October 2023) | Viewed by 2569

Special Issue Editors

Dr. Quan Yuan

E-Mail Website
Guest Editor
School of Ecology and Environment, Beijing Technology & Business University, Beijing 102401, China
Interests: water pollution control; wastewater treatment
Dr. Xiang Liu

E-Mail Website
Guest Editor
College of Agricultural Science and Engineering, Hohai University, Nanjing 210098, China
Interests: wastewater treatment; nutrients recovery; microalgae-based energy
Dr. Yangfan Deng

E-Mail Website
Guest Editor
Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
Interests: biological nitrogen removal

Special Issue Information

Dear Colleagues,

Wastewater treatment is crucial for the environment and well-being of humankind. The increased nutrient limitation in the regulations for WWTP effluents gave rise to the development of innovative nutrient removal and recovery technologies. Notwithstanding the enormous efforts of academic researchers, most of the wastewater treatment technologies remain in the lab with relatively less efficient and more complicated operations. The application prospect of a selected wastewater treatment process should consider the complexity, availability, and operation cost. This Special Issue plans to give an overview of the most recent advances in the field of innovative wastewater treatment technologies and their application prospects. This Special Issue is aimed at providing selected contributions on advances in the applications of wastewater treatment concerning nutrient removal and recovery.

Dr. Quan Yuan
Dr. Xiang Liu
Dr. Yangfan Deng
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. International Journal of Environmental Research and Public Health is an international peer-reviewed open access monthly 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 2500 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

  • nutrient removal
  • nutrient recovery
  • membranes
  • aerobic granular sludge
  • constructed wetlands

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Published Papers (1 paper)

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Research

14 pages, 7641 KiB  
Article
Rapid Start-Up Characteristics of Anammox under Different Inoculation Conditions
by Qiong Tan, Suhui Xia, Wenlai Xu and Yue Jian
Int. J. Environ. Res. Public Health 2023, 20(4), 2979; https://doi.org/10.3390/ijerph20042979 - 8 Feb 2023
Cited by 5 | Viewed by 2119
Abstract
The long multiplication time and extremely demanding enrichment environment requirements of Anammox bacteria (AAOB) have led to difficult reactor start-ups and hindered its practical dissemination. Few feasibility studies have been reported on the recovery of AAOB activity initiation after inlet substrate disconnection caused [...] Read more.
The long multiplication time and extremely demanding enrichment environment requirements of Anammox bacteria (AAOB) have led to difficult reactor start-ups and hindered its practical dissemination. Few feasibility studies have been reported on the recovery of AAOB activity initiation after inlet substrate disconnection caused by an unfavorable condition, and few factors, such as indicators of the recovery process, have been explored. Therefore, in this experiment, two modified expanded granular sludge bed reactors (EGSB) were inoculated with 1.5 L anaerobic granular sludge (AGS) + 1 L Anammox sludge (AMS) (R1) and 2.5 L anaerobic granular sludge (AGS) (R2), respectively. After a long-term (140 days) starvation shock at a high temperature (38 °C), the bacteria population activity recovery experiments were conducted. After 160 days, both reactors were successfully started up, and the total nitrogen removal rates exceeded 87%. Due to the experimental period, the total nitrogen removal rate of R2 was slightly higher than that of R1 in the final stage. However, it is undeniable that R2 had a relatively long activity delay during startup, while R1 had no significant activity delay during startup. The sludge obtained from R1 had a higher specific anammox activity (SAA). Analysis of the extracellular polymer substances (EPS) results showed that the extracellular polymer content in R1 was higher than that in R2 throughout the recovery process, indicating that R1 had higher sludge stability and denitrification performance. Scanning electron microscopy (SEM) analysis showed that more extracellular filamentous bacteria could be seen in the R1 reactor with better morphology of Anammox bacteria. In contrast, the R2 reactor had fewer extracellular hyphae and micropores as a percentage and higher filamentous bacteria content. The results of microbial 16SrDNA analysis showed that R1 used AAOB as inoculum to initiate Anammox, and the reactor was enriched with Anammox bacteria earlier and in much greater abundance than R2. The experimental results indicated that inoculating mixed anaerobic granular sludge and Anammox sludge to initiate an anammox reactor was more effective. Full article
(This article belongs to the Special Issue Trends in Wastewater Treatment)
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