Microbial Activity in GAC Filters at the Choisy‐le‐Roi Treatment Plant

Servais, Pierre; Billen, Gilles; Ventresque, Claire; Bablon, Guy P.

doi:10.1002/j.1551-8833.1991.tb07102.x

Cited by 106 publications

(56 citation statements)

References 22 publications

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“…An alternative strategy consists of developing treatment lines in which biodégradable dissolved organic carbon is removed by biological filtration (BABLON et al, 1987 ;SERVAIS et al, 1991). This reduces the amount of chlorine to be applied, thus limiting the formation of undesirable organochlorine compounds.…”

Section: -Introductionmentioning

confidence: 99%

Studies of BDOC and bacterial dynamics in the drinking water distribution system of the Northern Parisian suburbs

Servais¹,

Billen²,

Praly³

et al. 2005

rseau

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The deterioration of water quality in distribution systems due to bacterial regrowth is, at the present time, a major concern of drinking water producers. In this context, a good knowledge of the factors controlling bacterial development is required; the aim of the present study is to understand the rote of biodegradable dissolved organic carbon (BDOC) in the bacterial dynamics of the distribution system. This paper discusses the results obtained in a study carried out in order to assess the dynamics of biodegradable dissolved organic carbon and suspended bacteria in the water distribution system of the Northern Parisian suburbs lad by the Méry-sur-Oise treatment plant. The results show clearly that a significant decrease in BDOC occurs within the smallest pipes, when the BDOC level in the finished water is higher than about 0.20 mgC.L-1. However, no decrease in BDOC is observed when the BDOC in the finished water is lower than 0.16 mgC.L-1. The bacterial abundance in the distribution system is primarily linked to the absence of free chicane. Temperature and BDOC concentration in the finished water are also major controlling factors of bacterial numbers. Bacterial growth rates are in the range 0.005 to 0.1 h-1 in the absence of free chlorine, the highest of these values are in the same range as the growth rates measured for bacteria in natural aquatic ecosystems. Fixed biomass to the inner pipes surface are in the range 0.25 to 0.65 µgC.cm-2 and the average growth rate of fixed bacteria seems to be roughly in the same order of magnitude as the average growth rate of the suspended bacteria. A model of the dynamics of BDOC and bacteria in distribution network, incorporating the knowledge gained from this and previous studies concerning the control of bacterial activity by dissolved organic matter, is presented. It involves a mathematical representation of the kinetics of bacterial adsorption-desorption processes, bacterial attachment, bacterial utilization of biodegradable dissolved organic matter and impact of chlorine on free and fixed bacteria. It allows simulation of the impact of reducing the BDOC in the finished water on processes associated with bacterial regrowth in the distribution network..

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Section: -Introductionmentioning

confidence: 99%

Studies of BDOC and bacterial dynamics in the drinking water distribution system of the Northern Parisian suburbs

Servais¹,

Billen²,

Praly³

et al. 2005

rseau

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show abstract

“…Wykorzystanie glukozy znakowanej izotopem węgla 14 C Do określania liczebności mikroorganizmów występujących na powierzchni filtrów węglowych i ich aktywności wykorzystywano również metodę oznaczania produktów rozkładu glukozy znakowanej radioaktywnym izotopem węgla 14 C. Analizę skuteczności tej metody prowadzili między innymi Servais i inni [29,30] z użyciem opracowanej przez siebie autorskiej metody badań. Wykorzystali oni w charakterze znacznika wyżej wymieniony izotop węgla wbudowany w strukturę cząsteczki glukozy.…”

Section: Oznaczanie Aktywności Esterazunclassified

Review of Methods Used to Indication of Biological Carbon Filters Activity

Lis

Pasoń

Stępniak

2016

Eng. Prot. Environ.

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Water purification based on granulated active carbon filters (GAC) is more and more popular recently. It's caused by simplicity, low overall costs and high efficiency of this method in disposal of the removing organic water contaminations. To achieve full productivity, granulated active carbon filters must be settled by microorganisms living in water. Living cells of bacteria use many organic water contaminations as a source of carbon. Mostly, from the GAC filters are isolated Pseudomonas, Acinetobacter, Flavobacterium or Bacillus genera. To establish working carbon filters true activity, defining amount of living bacteria cells at the granulated carbon volume unit is required. Today's researchers propose for that purpose both classical microbiological methods based on the bacteria culture and sophisticated colorimetric analysis of the enzymatic reactions conducted by microorganisms. Some of them are method using FDA reduction by esterases to the fluoresceine efficient to establish amount of living bacterial cells, method with TTC which is reduced to red formasan by bacteria, quantitative indication of ATP in samples or usage of glucose labeled by carbon 14 C isotope.

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“…Inoculation of granular activated carbon fixed beds to increase biodegradation was also reported to be successful at laboratory scale (Speitel et al 1989). Inoculation may not be successful, however, in full-scale granular activated carbon beds due to displacement and wash out following competition with indigenous species (Ramadan et al 1990) or due to operational parameters such as backwashing and flow rate (Servais et al 1991) The rates of biodegradation of benzene, toluene, and xylene by indigenous microorganisms in a natural aquifer sand were investigated by Corseuil and Weber (1994). The results of this study confirmed that sufficiently large populations of indigenous organisms were capable of degrading the targeted contaminants in short periods of time under favorable growth conditions and in the presence of adequate amounts of oxygen.…”

Section: Augmentation Of Microbesmentioning

confidence: 99%

An evaluation of in-situ bioremediation processes

Cole¹,

Rashidi²

1996

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Microbial Activity in GAC Filters at the Choisy‐le‐Roi Treatment Plant

Cited by 106 publications

References 22 publications

Studies of BDOC and bacterial dynamics in the drinking water distribution system of the Northern Parisian suburbs

Studies of BDOC and bacterial dynamics in the drinking water distribution system of the Northern Parisian suburbs

Review of Methods Used to Indication of Biological Carbon Filters Activity

An evaluation of in-situ bioremediation processes

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