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Water
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Environmental Biotechnology for Wastewater and Sludge Treatment
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Environmental Biotechnology for Wastewater and Sludge Treatment

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 2542

Special Issue Editors

Dr. Xuan Li

E-Mail Website
Guest Editor
Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
Interests: wastewater treatment; sewer corrosion control; sewer process; infectious disease
Dr. Huan Liu

E-Mail
Guest Editor
School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2008, Australia
Interests: biological wastewater treatment; water supply; wastewater engineering; energy recovery; anaerobic digestion; biological nitrogen removal from wastewater; sludge dewatering
Dr. Qilin Wang

grade E-Mail Website
Guest Editor
Centre for Technology in Water and Wastewater, University of Technology Sydney, Sydney, NSW, Australia
Interests: novel membrane process; environmental biotechnology; emerging contaminants; biological wastewater treatment; algae; energy and resource recovery; sludge treatment; greenhouse gas emission
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Biological wastewater and sludge treatment is a critical component of modern life. These biological treatment technologies aim to remove pollutants and recover nutrients and energy from wastewater and sludge, the performance of which is closely linked to removal efficiency, cost, energy consumption, operational and monitoring feasibility, and environmental impacts. Currently, various environmental biotechnologies have been applied for wastewater and sludge treatment, aiming at improving the performance and sustainability of the treatment. In addition, wastewater and sludge inherently contain information related to human health and lifestyles, such as pathogens and drug usage. The epidemiological information in the community and their association with relevant markers in wastewater and sludge and the fate of such markers during wastewater and sludge treatment have also been of high research interest in recent decades.

This Special Issue invites original research papers or review papers in, but not limited to:

  • Advancements in sludge and wastewater treatment technologies;
  • Pollutant removal from sludge and wastewater through environmental biotechnologies;
  • Nutrient and energy recovery from sludge and wastewater;
  • Environmental impact assessment and mitigation of sludge and wastewater biotechnologies;
  • Impact of emerging pollutants in sludge and wastewater treatment technologies;
  • Estimating the human health and lifestyles through wastewater and sludge via wastewater-based epidemiology uses;
  • The fate of epidemiological markers during sludge and wastewater treatment.

Dr. Xuan Li
Dr. Huan Liu
Dr. Qilin Wang
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

  • wastewater treatment
  • sludge treatment
  • nutrient recovery
  • emerging pollutants
  • energy recovery

Published Papers (1 paper)

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Research

28 pages, 10993 KiB  
Article
First Comprehensive Analysis of Potential Ecological Risk and Factors Influencing Heavy Metals Binding in Sewage Sludge from WWTPs Using the Ultrasonic Disintegration Process
by Malwina Tytła, Kamila Widziewicz-Rzońca, Joanna Kernert, Zuzanna Bernaś and Krzysztof Słaby
Water 2023, 15(4), 666; https://doi.org/10.3390/w15040666 - 08 Feb 2023
Cited by 6 | Viewed by 1953
Abstract
In this study, the occurrence, fractionation, and potential ecological risk associated with seven heavy metals (HMs), i.e., Cd, Cr, Cu, Ni, Pb, Zn and Hg in sewage sludge (SS) were investigated. The main aim of the study was to conduct the first comprehensive [...] Read more.
In this study, the occurrence, fractionation, and potential ecological risk associated with seven heavy metals (HMs), i.e., Cd, Cr, Cu, Ni, Pb, Zn and Hg in sewage sludge (SS) were investigated. The main aim of the study was to conduct the first comprehensive analysis of the potential ecological risk of HMs in SS collected from two municipal wastewater treatment plants (WWTPs) using ultrasonic disintegration (UD) of thickened excess sludge aimed at improving the effects of anaerobic digestion (AD). In order to assess the level of potential ecological risk, two groups of indices related to the total content of HMs and their chemical forms were used. For this purpose, a modified BCR sequential extraction was conducted. The obtained results revealed that according to the values of total indices, the highest potential ecological risk was posed by Cd, Cu and Zn (and to a lesser extent by Ni and Cr), while in relation to speciation indices by Ni, Zn, Cd (and in some cases by Cr). In general, the highest risk was indicated at the beginning (primary and excess SS) and the two final stages of sludge processing (digested and dewatered SS). This means that the level of ecological risk may strongly depend on the processes used in WWTPs and especially on AD, dehydration and the activated sludge process, as well as on the characteristics of raw wastewater. The results of the statistical analysis and balance sheets revealed that the key factors which may influence the way that HMs bind in SS are: pH, TOC, OM and Eh. The obtained results showed that UD does not cause any significant changes in the total HMs concentrations in SS, and their release into supernatant in the mobile forms. This proves that UD is a safe and environmentally friendly method of sewage sludge pretreatment. Full article
(This article belongs to the Special Issue Environmental Biotechnology for Wastewater and Sludge Treatment)
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