Decentralized Domestic Wastewater and Stormwater Treatment Systems

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

Deadline for manuscript submissions: closed (1 October 2020) | Viewed by 2917

Special Issue Editor


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Guest Editor
University of the Aegean, Mytilene, Greece
Interests: wastewater treatment and reuse; stormwater management; constructed wetlands; anaerobic digestion; micropollutants; non-conventional wastewater treatment

Special Issue Information

Daer colleagues,

Decentralized wastewater and stormwater treatment systems have shown an increasing trend worldwide, as their application could save freshwater with a reduced energy cost in comparison with centralized systems. In this context, a number of technologies were developed and tested in the last decades for on-site domestic wastewater treatment, including sand filters, membrane bioreactors, constructed wetlands, and biofilm reactors. In addition, recently, other interesting technologies, such as microbial fuel cells or advanced oxidation processes, were examined. Similarly, for stormwater management, several other decentralized approaches could be applied such as green roofs, vegetated swales, and bioretention cells. In many cases, nature-based decentralized systems also help to attain benefits like improved human well-being, the absorption of air pollution, and moisture retention, thus lowering the ambient temperature and attenuating the urban heat island effect in cities. Despite the recent development of the abovementioned technologies, there are still many drawbacks that should be overcome in order to improve their sustainability, such as cost, energy requirement, operation, effluent quality, aesthetic, and acceptability.

The main purpose of this Special Issue is to propose a series of novel studies for the decentralized treatment of wastewater and stormwater in order to improve their overall sustainability and acceptability.

Prof. Dr. Michalis Fountoulakis
Guest Editor

Manuscript Submission Information

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Keywords

  • Nature-based solutions for water
  • Constructed wetlands
  • Membrane bioreactors
  • Microbial fuel cells
  • Advanced oxidation processes
  • Green roofs
  • Bioretention basins
  • Greywater treatment

Published Papers (1 paper)

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Research

14 pages, 1589 KiB  
Article
A Simple Approach to Predicting the Reliability of Small Wastewater Treatment Plants
by Joshua T. Bunce and David W. Graham
Water 2019, 11(11), 2397; https://doi.org/10.3390/w11112397 - 15 Nov 2019
Cited by 14 | Viewed by 2652
Abstract
The treatment performance of small wastewater treatment plants (WWTPs) is not well understood, and their ecological impact may be underestimated. Growing evidence suggests they play a critical role in ensuring sustainable wastewater management, meaning they can no longer be neglected. The aim of [...] Read more.
The treatment performance of small wastewater treatment plants (WWTPs) is not well understood, and their ecological impact may be underestimated. Growing evidence suggests they play a critical role in ensuring sustainable wastewater management, meaning they can no longer be neglected. The aim of this study was to provide new data, understanding, and analytical approaches to improve the management of existing small WWTPs. A one-year sampling campaign was performed in the rural UK, and we found the effluent quality from twelve small versus three larger WWTPs was significantly poorer (p < 0.05) across a range of performance parameters. Specifically, mean removal rates at the small plants were 67.3 ± 20.4%, 80 ± 33.9%, and 55.5 ± 30.4% for soluble chemical oxygen demand (sCOD), total suspended solids (TSS), and NH4-N (± standard deviation), respectively, whereas equivalent rates for larger plants were 73.3 ± 17.6%, 91.7 ± 4.6%, and 92.9 ± 3.7%. A random forest classification model was found to accurately predict the likelihood of smaller WWTPs becoming unreliable. Importantly, when condensed to the three most ‘important’ predictors, the classifier retained accuracy, which may reduce the data requirements for effective WWTP management. Among the important predictors was population equivalence, suggesting the smallest WWTPs may require particularly stringent management. Growing awareness of the need for sustainable wastewater and water resources management makes this new approach both timely and widely relevant. Full article
(This article belongs to the Special Issue Decentralized Domestic Wastewater and Stormwater Treatment Systems)
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