Biostimulation strategies to enhance manganese removal in drinking water biofilters

Inês Lousinha Ribeiro Breda, Loren Ramsay, Ditte Søborg, Peter Roslev

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskningpeer review

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Resumé

In the North of Europe, drinking water treatment is commonly based in aeration and biofiltration of groundwater. Biofilters are defined as submerged, granular filters in which the individual grains have developed a natural coating of both inorganics and biofilms capable of treating water to national drinking water criteria. The period during which virgin filter media matures into a fully functional biofilter is designated as the start-up period. The duration of a start-up for efficient manganese removal varies from weeks to more than a year.

The aim of this study was to investigate biostimulation strategies to enhance manganese removal during start-up of biofilters for treatment of groundwater. The investigation focused on the effect that different biostimulation strategies have on the onset of manganese removal, and on the bacterial communities formed in the early stages of the biofilter.

Two major biostimulation strategies were investigated: biostimulation using different filter media (e.g. quartz, calcium carbonate, polystyrene, manganese oxide), and biostimulation using chemical and biological amendments (e.g., addition of macronutrients, trace metals, matured medium, backwash sludge, and isolated manganese oxidizing bacteria). The onset and extent of manganese oxidation was determined spectrophotometrically, and the bacterial communities were characterized using DAPI staining, qPCR, 16S rRNA pyrosequencing, and enrichments of manganese oxidizing bacterial consortia.

The investigation suggested that when inoculating different filter media with an identical water source, the bacterial community formed during the start-up period is strongly influenced by the filter media type. Hence, management of bacterial communities may be possible by selecting specific filter media to enhance growth and activity of specific bacteria. Biostimulation of virgin media to enhance initial manganese removal using different amendments strategies is possible especially in the early stages of filter development whereas autocatalytic processes appear to become dominant with time. The complex interactions between biological and chemical oxidation processes should be considered when optimizing biofilters for efficient removal of manganese from drinking water.

OriginalsprogEngelsk
Publikationsdato2018
StatusUdgivet - 2018
BegivenhedInternational Symposium on Biological Treatment - Austin, USA
Varighed: 24 jan. 201825 jan. 2018
https://www.awwa.org/conferences-education/conferences/biological-treatment.aspx

Konference

KonferenceInternational Symposium on Biological Treatment
LandUSA
ByAustin
Periode24/01/201825/01/2018
Internetadresse

Fingerprint

manganese
drinking water
filter
oxidation
biofiltration
bacterium
groundwater
removal
manganese oxide
calcium carbonate
aeration
trace metal
biofilm
coating
sludge
quartz
water

Citer dette

Breda, I. L. R., Ramsay, L., Søborg, D., & Roslev, P. (2018). Biostimulation strategies to enhance manganese removal in drinking water biofilters. Poster præsenteret på International Symposium on Biological Treatment, Austin, USA.
Breda, Inês Lousinha Ribeiro ; Ramsay, Loren ; Søborg, Ditte ; Roslev, Peter. / Biostimulation strategies to enhance manganese removal in drinking water biofilters. Poster præsenteret på International Symposium on Biological Treatment, Austin, USA.
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abstract = "In the North of Europe, drinking water treatment is commonly based in aeration and biofiltration of groundwater. Biofilters are defined as submerged, granular filters in which the individual grains have developed a natural coating of both inorganics and biofilms capable of treating water to national drinking water criteria. The period during which virgin filter media matures into a fully functional biofilter is designated as the start-up period. The duration of a start-up for efficient manganese removal varies from weeks to more than a year. The aim of this study was to investigate biostimulation strategies to enhance manganese removal during start-up of biofilters for treatment of groundwater. The investigation focused on the effect that different biostimulation strategies have on the onset of manganese removal, and on the bacterial communities formed in the early stages of the biofilter. Two major biostimulation strategies were investigated: biostimulation using different filter media (e.g. quartz, calcium carbonate, polystyrene, manganese oxide), and biostimulation using chemical and biological amendments (e.g., addition of macronutrients, trace metals, matured medium, backwash sludge, and isolated manganese oxidizing bacteria). The onset and extent of manganese oxidation was determined spectrophotometrically, and the bacterial communities were characterized using DAPI staining, qPCR, 16S rRNA pyrosequencing, and enrichments of manganese oxidizing bacterial consortia.The investigation suggested that when inoculating different filter media with an identical water source, the bacterial community formed during the start-up period is strongly influenced by the filter media type. Hence, management of bacterial communities may be possible by selecting specific filter media to enhance growth and activity of specific bacteria. Biostimulation of virgin media to enhance initial manganese removal using different amendments strategies is possible especially in the early stages of filter development whereas autocatalytic processes appear to become dominant with time. The complex interactions between biological and chemical oxidation processes should be considered when optimizing biofilters for efficient removal of manganese from drinking water.",
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Breda, ILR, Ramsay, L, Søborg, D & Roslev, P 2018, 'Biostimulation strategies to enhance manganese removal in drinking water biofilters', Austin, USA, 24/01/2018 - 25/01/2018, .

Biostimulation strategies to enhance manganese removal in drinking water biofilters. / Breda, Inês Lousinha Ribeiro; Ramsay, Loren; Søborg, Ditte; Roslev, Peter.

2018. Poster præsenteret på International Symposium on Biological Treatment, Austin, USA.

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskningpeer review

TY - CONF

T1 - Biostimulation strategies to enhance manganese removal in drinking water biofilters

AU - Breda, Inês Lousinha Ribeiro

AU - Ramsay, Loren

AU - Søborg, Ditte

AU - Roslev, Peter

PY - 2018

Y1 - 2018

N2 - In the North of Europe, drinking water treatment is commonly based in aeration and biofiltration of groundwater. Biofilters are defined as submerged, granular filters in which the individual grains have developed a natural coating of both inorganics and biofilms capable of treating water to national drinking water criteria. The period during which virgin filter media matures into a fully functional biofilter is designated as the start-up period. The duration of a start-up for efficient manganese removal varies from weeks to more than a year. The aim of this study was to investigate biostimulation strategies to enhance manganese removal during start-up of biofilters for treatment of groundwater. The investigation focused on the effect that different biostimulation strategies have on the onset of manganese removal, and on the bacterial communities formed in the early stages of the biofilter. Two major biostimulation strategies were investigated: biostimulation using different filter media (e.g. quartz, calcium carbonate, polystyrene, manganese oxide), and biostimulation using chemical and biological amendments (e.g., addition of macronutrients, trace metals, matured medium, backwash sludge, and isolated manganese oxidizing bacteria). The onset and extent of manganese oxidation was determined spectrophotometrically, and the bacterial communities were characterized using DAPI staining, qPCR, 16S rRNA pyrosequencing, and enrichments of manganese oxidizing bacterial consortia.The investigation suggested that when inoculating different filter media with an identical water source, the bacterial community formed during the start-up period is strongly influenced by the filter media type. Hence, management of bacterial communities may be possible by selecting specific filter media to enhance growth and activity of specific bacteria. Biostimulation of virgin media to enhance initial manganese removal using different amendments strategies is possible especially in the early stages of filter development whereas autocatalytic processes appear to become dominant with time. The complex interactions between biological and chemical oxidation processes should be considered when optimizing biofilters for efficient removal of manganese from drinking water.

AB - In the North of Europe, drinking water treatment is commonly based in aeration and biofiltration of groundwater. Biofilters are defined as submerged, granular filters in which the individual grains have developed a natural coating of both inorganics and biofilms capable of treating water to national drinking water criteria. The period during which virgin filter media matures into a fully functional biofilter is designated as the start-up period. The duration of a start-up for efficient manganese removal varies from weeks to more than a year. The aim of this study was to investigate biostimulation strategies to enhance manganese removal during start-up of biofilters for treatment of groundwater. The investigation focused on the effect that different biostimulation strategies have on the onset of manganese removal, and on the bacterial communities formed in the early stages of the biofilter. Two major biostimulation strategies were investigated: biostimulation using different filter media (e.g. quartz, calcium carbonate, polystyrene, manganese oxide), and biostimulation using chemical and biological amendments (e.g., addition of macronutrients, trace metals, matured medium, backwash sludge, and isolated manganese oxidizing bacteria). The onset and extent of manganese oxidation was determined spectrophotometrically, and the bacterial communities were characterized using DAPI staining, qPCR, 16S rRNA pyrosequencing, and enrichments of manganese oxidizing bacterial consortia.The investigation suggested that when inoculating different filter media with an identical water source, the bacterial community formed during the start-up period is strongly influenced by the filter media type. Hence, management of bacterial communities may be possible by selecting specific filter media to enhance growth and activity of specific bacteria. Biostimulation of virgin media to enhance initial manganese removal using different amendments strategies is possible especially in the early stages of filter development whereas autocatalytic processes appear to become dominant with time. The complex interactions between biological and chemical oxidation processes should be considered when optimizing biofilters for efficient removal of manganese from drinking water.

M3 - Poster

ER -

Breda ILR, Ramsay L, Søborg D, Roslev P. Biostimulation strategies to enhance manganese removal in drinking water biofilters. 2018. Poster præsenteret på International Symposium on Biological Treatment, Austin, USA.