A long term study on biofilm development in drinking water distribution system: comparison of stainless steel grades with commonly used materials

Lassiaz, Stéphanie; Peguet, Lionel; Boillot, P.; Jacques, S.; Peultier, J.; Bonnet, Marie-Claude

doi:10.1051/metal/2011063

Cited by 15 publications

(6 citation statements)

References 37 publications

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“…Although total removal of the biofilm was not achieved, the overall results underscore that SS should be preferred to other materials as it facilitates the sanitization procedures, reinforcing previous findings (Allion et al, 2011;Lee et al, 2010).…”

Section: Resultssupporting

confidence: 69%

The effects of surface type on the removal of Bacillus cereus and Pseudomonas fluorescens single and dual species biofilms

Lemos

Gomes

Mergulhão

et al. 2015

Food and Bioproducts Processing

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The aim of this work was to assess the effectiveness of the biocide benzyldimethyldodecyl ammonium chloride (BDMDAC) on the removal of single and dual species biofilms of Bacillus cereus and Pseudomonas fluorescens formed in a rotating cylinder reactor (RCR), using AISI316 stainless steel (SS) and polymethyl methacrylate (PMMA) as adhesion surfaces. Additional tests were performed to understand the adhesion of B. cereus and P. fluorescens to the selected surfaces.Predictions of the adhesion potential according to the thermodynamic theory showed more favourable adhesion on SS than on PMMA, for both species.Thermodynamically, adhesion was more favourable for B. cereus. After BDMDAC treatment, thermodynamic adhesion ability was favoured for P. flurescens and decreased for B. cereus, mainly on PMMA. Both bacteria had negative surface charge and the exposure to BDMDAC increased the charge to less negative values. In vitro adhesion results were, for most cases, contradictory to those predicted by the thermodynamic theory. Single and dual species biofilms were formed in the RCR for 7 days. Afterwards, the biofilms were exposed to the chemical (use of BDMDAC) and to hydrodynamic stresses (use of increasing Reynolds number of agitation), alone and combined. The applications of BDMDAC or hydrodynamic stress, when applied alone, were insufficient to remove the biofilms from the surfaces. The combined effects of BDMDAC with a series of increasing Reynolds number of agitation promoted additional biofilm removal. This effect was dependent on the surface used. For PMMA, the hydrodynamic stress was more effective on the removal of BDMDAC-treated dual species biofilms. For SS, the synergy of the chemical and hydrodynamic stresses removed more B. cereus and dual species biofilms. The overall results 2 demonstrate that the species association was not advantageous in biofilm resistance to removal when compared with the single species biofilms, particularly those of P. fluorescens. In general, removal by hydrodynamic stress, alone and preceded by the BDMDAC treatment, was higher for biofilms formed on SS. However, even the combined action of BDMDAC and the exposure to a series of increasing Reynolds number of agitation were not effective to obtain biofilm-free surfaces.

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Section: Resultssupporting

confidence: 69%

The effects of surface type on the removal of Bacillus cereus and Pseudomonas fluorescens single and dual species biofilms

Lemos

Gomes

Mergulhão

et al. 2015

Food and Bioproducts Processing

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“…The presence of invertebrates and particularly of the large Asellus aquaticus (2–10 mm long; Christensen et al, 2011 ) in household taps is negatively perceived by consumers ( van Lieverloo et al, 2002a ). Thirdly, operational problems were related with bacterial activity, such as fouling of concrete pipes due to growth of bacteria to high numbers in the form of a biofilm ( Flemming, 2002 ; Allion et al, 2011 ), or biocorrosion of cast-iron pipes promoted by, e.g., sulfate-reducers and iron-oxidizers ( Lee et al, 1980 ; Emde et al, 1992 ; Sun et al, 2014 ). The replacement of damaged distribution pipes related to microbial processes represents one major financial investment for water utilities.…”

Section: Problems Associated With Bacterial Growth In Drinking Water mentioning

confidence: 99%

Biological Stability of Drinking Water: Controlling Factors, Methods, and Challenges

et al. 2016

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Biological stability of drinking water refers to the concept of providing consumers with drinking water of same microbial quality at the tap as produced at the water treatment facility. However, uncontrolled growth of bacteria can occur during distribution in water mains and premise plumbing, and can lead to hygienic (e.g., development of opportunistic pathogens), aesthetic (e.g., deterioration of taste, odor, color) or operational (e.g., fouling or biocorrosion of pipes) problems. Drinking water contains diverse microorganisms competing for limited available nutrients for growth. Bacterial growth and interactions are regulated by factors, such as (i) type and concentration of available organic and inorganic nutrients, (ii) type and concentration of residual disinfectant, (iii) presence of predators, such as protozoa and invertebrates, (iv) environmental conditions, such as water temperature, and (v) spatial location of microorganisms (bulk water, sediment, or biofilm). Water treatment and distribution conditions in water mains and premise plumbing affect each of these factors and shape bacterial community characteristics (abundance, composition, viability) in distribution systems. Improved understanding of bacterial interactions in distribution systems and of environmental conditions impact is needed for better control of bacterial communities during drinking water production and distribution. This article reviews (i) existing knowledge on biological stability controlling factors and (ii) how these factors are affected by drinking water production and distribution conditions. In addition, (iii) the concept of biological stability is discussed in light of experience with well-established and new analytical methods, enabling high throughput analysis and in-depth characterization of bacterial communities in drinking water. We discussed, how knowledge gained from novel techniques will improve design and monitoring of water treatment and distribution systems in order to maintain good drinking water microbial quality up to consumer’s tap. A new definition and methodological approach for biological stability is proposed.

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“…Uncontrolled growth of indigenous bacteria in water distribution systems results in microbially induced operational problems in distribution pipes which introduce significant investment and maintenance costs for water utilities (Allion et al, 2011). In the Netherlands alone, investment costs on distribution pipelines require approximately 50% of water utility investments (de Moel et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Clean and Safe Drinking Water Systems via Metagenomics Data and Artificial Intelligence: State-of-the-Art and Future Perspective

Mahajna

Dinkla²,

Euverink

et al. 2022

Front. Microbiol.

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The use of next-generation sequencing technologies in drinking water distribution systems (DWDS) has shed insight into the microbial communities’ composition, and interaction in the drinking water microbiome. For the past two decades, various studies have been conducted in which metagenomics data have been collected over extended periods and analyzed spatially and temporally to understand the dynamics of microbial communities in DWDS. In this literature review, we outline the findings which were reported in the literature on what kind of occupancy-abundance patterns are exhibited in the drinking water microbiome, how the drinking water microbiome dynamically evolves spatially and temporally in the distribution networks, how different microbial communities co-exist, and what kind of clusters exist in the drinking water ecosystem. While data analysis in the current literature concerns mainly with confirmatory and exploratory questions pertaining to the use of metagenomics data for the analysis of DWDS microbiome, we present also future perspectives and the potential role of artificial intelligence (AI) and mechanistic models to address the predictive and mechanistic questions. The integration of meta-omics, AI, and mechanistic models transcends metagenomics into functional metagenomics, enabling deterministic understanding and control of DWDS for clean and safe drinking water systems of the future.

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A long term study on biofilm development in drinking water distribution system: comparison of stainless steel grades with commonly used materials

Cited by 15 publications

References 37 publications

The effects of surface type on the removal of Bacillus cereus and Pseudomonas fluorescens single and dual species biofilms

The effects of surface type on the removal of Bacillus cereus and Pseudomonas fluorescens single and dual species biofilms

Biological Stability of Drinking Water: Controlling Factors, Methods, and Challenges

Clean and Safe Drinking Water Systems via Metagenomics Data and Artificial Intelligence: State-of-the-Art and Future Perspective

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