Greywater: Understanding biofilm bacteria succession, pollutant removal and low sulfide generation in small diameter gravity sewers

Zheng, Tianlong; Li, Wenkai; Ma, Yingqun; Liu, Junxin; Ren, Junpeng

doi:10.1016/j.jclepro.2020.122426

Cited by 14 publications

(3 citation statements)

References 34 publications

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“…The phylum taxonomy is mostly dominated by Proteobacteria followed by Bacteroidetes, which has also been the case in the GW study of small-diameter gravity sewers carrying GW [112]. Proteobacteria and Bacteroidetes were also found dominant in tap water studies [113], which has been seen in C soil samples that received tap water for eight weeks.…”

Section: Tea Bag Resultssupporting

confidence: 52%

Staircase Wetlands for the Treatment of Greywater and the Effect of Greywater on Soil Biodiversity

Qadir¹,

Pino²,

Brambilla³

et al. 2023

Preprint

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Fresh water is an increasingly scarce resource in both urban and rural developments. As a response to this challenge, non-potable water reuse is on the rise. This research explored a potential off-grid system for water purification, consisting of a staircase wetland with terracotta pot plants working as a filter for greywater. The study further investigated the physicochemical properties of the greywater and the soil before and after the wetland purification. Results showed that the filtered water satisfied all requirements for water reuse, e.g., pH, turbidity, and total coliforms. The research then uniquely investigated the effect of greywater on the soil biodiversity and soil biomass using soil DNA extraction and the tea bag index testing method. The filtered greywater absorbed by soil decomposed the soil faster and stabilized it better compared to tap water-absorbed soil or unfiltered greywater. The DNA generation sequencing revealed no significant differences in alpha diversity between control and treatment samples. The beta diversity differences were significant. This nature-based solution can lead to reduced load on the sewage system, resulting in less wastewater generation.

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Section: Tea Bag Resultssupporting

confidence: 52%

Staircase Wetlands for the Treatment of Greywater and the Effect of Greywater on Soil Biodiversity

Qadir¹,

Pino²,

Brambilla³

et al. 2023

Preprint

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“…in the treatment of greywater (Khuntia et al, 2019). Zheng et al (2020) commented that Proteobacteria, Bacteroidetes, Pseudomonas, and Enterobacter in small diameter gravity sewers could attain COD removal up to 22.31%, TN removal at 21.95%, and TP removal at 6.16%. Pronk et al (2019) used microfiltration and ultrafiltration membranes with biofilm for water and wastewater treatment.…”

Section: Secondary Treatment Methodsmentioning

confidence: 99%

An assessment of technological development and applications of decentralized water reuse: A critical review and conceptual framework

et al. 2022

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Rapid development, urbanization, and population growth have contributed to water stress in many parts of the world. As freshwater sources are finite, it is essential to source for alternatives to ensure water security. Reclamation of non‐conventional water sources (i.e., rainwater and greywater) can be a viable alternative to alleviate water stress. In this work, various laboratory, pre‐commercialization scale, and commercialized products for rainwater harvesting and greywater treatment and reuse were reviewed. As a result, a conceptual framework is proposed to provide an overview on the applicability of technologies under various settings, which were mapped against the intended use of treated water and the potential for water supply expansion. This conceptual framework could aid decision makers in deciding on a suitable decentralized solution for water reclamation depending on limiting criteria. Decentralized systems of rainwater harvesting and greywater treatment for reuse are going to be crucial in reducing the dependence on the centralized water supply. This article is categorized under: Engineering Water > Planning Water Water and Life > Conservation, Management, and Awareness Science of Water > Water Quality

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“…There was a certain amount of pathogenic bacteria in grey water and its sewer biofilms, and Environmental Science: Water Research & Technology Paper related studies have confirmed this view. 52 It is therefore reasonable to suggest that the biological safety of grey water and its sewers should be elucidated in detail in future studies.…”

Section: Distribution Of Pathogenic Bacteria In Sewersmentioning

confidence: 99%

Distinction of biofilm bacterial communities in practical rural sewers under different sewage sources

Chen

Lyu

Zheng

et al. 2023

Environ. Sci.: Water Res. Technol.

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Greywater: Understanding biofilm bacteria succession, pollutant removal and low sulfide generation in small diameter gravity sewers

Cited by 14 publications

References 34 publications

Staircase Wetlands for the Treatment of Greywater and the Effect of Greywater on Soil Biodiversity

Staircase Wetlands for the Treatment of Greywater and the Effect of Greywater on Soil Biodiversity

An assessment of technological development and applications of decentralized water reuse: A critical review and conceptual framework

Distinction of biofilm bacterial communities in practical rural sewers under different sewage sources

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