Special Issue "Sanitation, Pollution Control and Water Management"

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Environmental Sustainability and Applications".

Deadline for manuscript submissions: 30 September 2021.

Special Issue Editors

Dr. Maria João Rosa
E-Mail Website
Assistant Guest Editor
Water Quality and Treatment Laboratory, Urban Water Unit, Hydraulics and Environment Department, LNEC—National Civil Engineering Laboratory, Lisbon, Portugal
Interests: water quality, treatment, and reuse; advanced treatments; resource recovery; control of emerging pollutants; energy efficiency; asset management of urban water systems
Special Issues and Collections in MDPI journals
Prof. Dr. José Saldanha Matos
E-Mail Website
Chief Guest Editor
Department of Civil Engineering, Architecture and Georesources, CERIS, IST-University of Lisbon, Portugal
Interests: asset management; faecal sludge; sanitation; sewer processes; urban drainage and wastewater treatment

Special Issue Information

Dear Colleagues,

While water scarcity affects more than 40% of the global population, and over 2.4 billion people lack access to basic sanitation services, a large number of cities are becoming increasingly vulnerable to flooding and related hazards. Floods and other water-related disasters account for 70% of all deaths related to natural disasters, and more than 80% of wastewater resulting from human activities is discharged into receiving waters without any treatment.

Nevertheless, in a large part of the developing world dry sanitation prevails, mostly using traditional or improved latrines, but with poor hygienic conditions, which are one of the main causes of outbreaks of diarrhoea, cholera, typhoid fever, and other waterborne diseases. In urban areas, on-site dry sanitation generally requires a chain of faecal sludge services, including collection, storage, transport, and treatment in an existing Wastewater Treatment Plant (WWTP) or in a dedicated Faecal Sludge Treatment Plant (FSTP), as well as final disposal of the biosolids. These issues clearly demand further research and insights.

In the developed world, on the contrary, wastewater is usually collected and transported to WWTP, being some of the main challenges related with using techniques, technologies and methods in order to optimize the performance of the wastewater systems.

The study of water resources and water pollution control has a long tradition; still, relevant issues are constantly being put on the spotlight: the fate of microplastics and other emerging pollutants, the relevance of resources recovery, the effects of climate change, and the challenges of the Sustainable Development Goals, being some of the examples.

This Special Issue aims to enlarge the present knowledge related to sanitation, pollution control, and water management. Innovative research on technologies and methodological approaches are welcomed. The discussion of case studies, as well as of experimental work, is encouraged.

Dr. José Saldanha Matos
Dr. Maria João Rosa
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 papers will be 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. Sustainability 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 1900 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

  • faecal sludge
  • pollution control
  • sanitation
  • wastewater drainage and treatment
  • water management
  • water resources and water reuse

Published Papers (1 paper)

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Research

Open AccessArticle
Combined Pretreatment by Ultrasound and Struvite Precipitation of Raw Substrates: A Strategy to Overcome C/N Ratio Unbalance in Nitrogen-Rich Anaerobic Co-Digestion Systems
Sustainability 2021, 13(4), 2175; https://doi.org/10.3390/su13042175 - 18 Feb 2021
Viewed by 528
Abstract
The present study aimed to optimize the struvite chemical precipitation process in nitrogen-rich anaerobic co-digestion systems. Struvite precipitation experiments were carried out using a mixture of cattle slurry liquid fraction and sewage sludge, with and without ultrasound pretreatment. Marine salt or MgCl2 [...] Read more.
The present study aimed to optimize the struvite chemical precipitation process in nitrogen-rich anaerobic co-digestion systems. Struvite precipitation experiments were carried out using a mixture of cattle slurry liquid fraction and sewage sludge, with and without ultrasound pretreatment. Marine salt or MgCl2 were used as magnesium source in NH4+:Mg2+ stoichiometric proportions of 1:1.5 and 1:3. Under the tested conditions, ammonium nitrogen and orthophosphate were removed from the mixed liquor with a maximum observed efficiency of 43% and 92%, respectively, when the ultrasound treatment was applied prior to struvite precipitation, using MgCl2 as source of magnesium (NH4+:Mg2+ of 1:3). The operating time was 40 min. Different pretreatments were tested prior to the biomethanization experiments, struvite precipitation, ultrasound and a combination of both pretreatments. The application of ultrasound (with an energy input of 218 kJ L−1) and struvite precipitation (NH4+:Mg2+ of 1:3) increased the methane content in the biogas by 82% and reduced hydraulic retention time by 28%, when compared to the anaerobic co-digestion assays without pretreatment. The hydrolytic pretreatment increased the bioavailability of nitrogen by 5%, thus enhancing the removal efficiency of ammonium nitrogen by 20%. Consequently, an increase in the carbon to nitrogen ratio was observed, favoring the methanogenesis process. Full article
(This article belongs to the Special Issue Sanitation, Pollution Control and Water Management)
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