Is biological treatment a viable alternative for micropollutant removal in drinking water treatment processes?

Benner, Jessica; Helbling, Damian E.; Kohler, Hans‐Peter E.; Wittebol, Janneke; Kaiser, Elena; Prasse, Carsten; Ternes, Thomas A.; Albers, Christian Nyrop; Aamand, Jens; Horemans, Benjamin; Springael, Dirk; Walravens, Eddy; Boon, Nico

doi:10.1016/j.watres.2013.07.015

Cited by 301 publications

(192 citation statements)

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“…It is seldom used in drinking water treatment, however, due to lower nutrient influent, backwash, and undefined microbial roles in the treatment system. Benner et al (2013) once proposed in a review that bioaugmentation is "a potential targeted, cost-effective, and sustainable alternative to existing treatment processes". Christian et al (2015) and Haig et al (2016) used bioaugmentation in sand filters to successfully improve the removal of 2,6-dichlorobenzamide and estrogens, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…An appropriate hydraulic retention time (HRT) is also essential. On the one hand, a longer HRT may increase reaction time, and thus improve the treatment effect; on the other hand, a shorter HRT may increase substrate support and diminish the diffusive boundary layer surrounding each filter particle leading to more efficient degradation (Benner et al, 2013). Therefore, optimizing the HRT for pollutant removal should be done prior to the operation of a sand filter.…”

Section: Bioaugmentation Treatment Of Groundwater Containing High Mn(mentioning

confidence: 99%

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Treatment of groundwater containing Mn(II), Fe(II), As(III) and Sb(III) by bioaugmented quartz-sand filters

et al. 2016

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a b s t r a c tHigh concentrations of iron (Fe(II)) and manganese (Mn(II)) often occur simultaneously in groundwater. Previously, we demonstrated that Fe(II) and Mn(II) could be oxidized to biogenic Fe-Mn oxides (BFMO) via aeration and microbial oxidation, and the formed BFMO could further oxidize and adsorb other pollutants (e.g., arsenic (As(III)) and antimony (Sb(III))). To apply this finding to groundwater remediation, we established four quartz-sand columns for treating groundwater containing Fe(II), Mn(II), As(III), and Sb(III). A Mn-oxidizing bacterium (Pseudomonas sp. QJX-1) was inoculated into two parallel bioaugmented columns. Long-term treatment (120 d) showed that bioaugmentation accelerated the formation of Fe-Mn oxides, resulting in an increase in As and Sb removal. The bioaugmented columns also exhibited higher overall treatment effect and anti-shock load capacity than that of the nonbioaugmented columns. To clarify the causal relationship between the microbial community and treatment effect, we compared the biomass of active bacteria (reverse-transcribed real-time PCR), bacterial community composition (Miseq 16S rRNA sequencing) and community function (metagenomic sequencing) between the bioaugmented and non-bioaugmented columns. Results indicated that the QJX1 strain grew steadily and attached onto the filter material surface in the bioaugmented columns. In general, the inoculated strain did not significantly alter the composition of the indigenous bacterial community, but did improve the relative abundances of xenobiotic metabolism genes and Mn oxidation gene. Thus, bioaugmentation intensified microbial degradation/utilization for the direct removal of pollutants and increased the formation of Fe-Mn oxides for the indirect removal of pollutants. Our study provides an alternative method for the treatment of groundwater containing high Fe(II), Mn(II) and As/ Sb.

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Section: Discussionmentioning

confidence: 99%

Section: Bioaugmentation Treatment Of Groundwater Containing High Mn(mentioning

confidence: 99%

Treatment of groundwater containing Mn(II), Fe(II), As(III) and Sb(III) by bioaugmented quartz-sand filters

et al. 2016

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“…Polluted groundwater aquifers used for drinking water are often remediated by use of the pump-and-treat technology, where the water is pumped up and treated at the site, typically by adsorption of the contaminants onto activated carbon (10), though phenoxypropionate herbicides are not sequestered very well by activated carbon due to their chemical characteristics. As an alternative, pesticide-contaminated water may be remediated by passing the water through a sand filter with degrading bacteria.…”

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confidence: 99%

Establishment of Bacterial Herbicide Degraders in a Rapid Sand Filter for Bioremediation of Phenoxypropionate-Polluted Groundwater

Feld

Nielsen

Hansen

et al. 2016

Appl Environ Microbiol

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In this study, we investigated the establishment of natural bacterial degraders in a sand filter treating groundwater contaminated with the phenoxypropionate herbicides (RS)-2-(4-chloro-2-methylphenoxy)propanoic acid (MCPP) and (RS)-2-(2,4-dichlorophenoxy)propanoic acid (DCPP) and the associated impurity/catabolite 4-chlorophenoxypropanoic acid (4-CPP). A pilot facility was set up in a contaminated landfill site. Anaerobic groundwater was pumped up and passed through an aeration basin and subsequently through a rapid sand filter, which is characterized by a short residence time of the water in the filter. For 3 months, the degradation of DCPP, MCPP, and 4-CPP in the sand filter increased to 15 to 30% of the inlet concentration. A significant selection for natural bacterial herbicide degraders also occurred in the sand filter. Using a most-probable-number (MPN) method, we found a steady increase in the number of culturable phenoxypropionate degraders, reaching approximately 5 ؋ 10 5 degraders per g sand by the end of the study. Using a quantitative PCR targeting the two phenoxypropionate degradation genes, rdpA and sdpA, encoding stereospecific dioxygenases, a parallel increase was observed, but with the gene copy numbers being about 2 to 3 log units higher than the MPN. In general, the sdpA gene was more abundant than the rdpA gene, and the establishment of a significant population of bacteria harboring sdpA occurred faster than the establishment of an rdpA gene-carrying population. The identities of the specific herbicide degraders in the sand filter were assessed by Illumina MiSeq sequencing of 16S rRNA genes from sand filter samples and from selected MPN plate wells. We propose a list of potential degrader bacteria involved in herbicide degradation, including representatives belonging to the Comamonadaceae and Sphingomonadales.G roundwater is a valuable resource that is used for drinking water in many countries all over the world. The quality of the water is vital to our health, and regulations have been made to control the concentration of contaminants and protect the groundwater (1). A major concern is leaching of pesticides mainly from agricultural areas but also from urban areas or from point sources (2). In the European Union, a legal threshold limit has been set at 0.1 g/liter for any given pesticide or 0.5 g/liter for a total concentration of mixed pesticides in drinking water (3).In Denmark, monitoring of the groundwater status has detected pesticides in almost 40% of the investigated wells, and the concentrations exceed the allowed threshold limit in 12% of the wells (4). Phenoxypropionate herbicides, including the compounds (RS)-2-(2,4-dichlorophenoxy)propanoic acid (known as DCPP or dichlorprop) and (RS)-2-(4-chloro-2-methylphenoxy)propanoic acid (known as MCPP or mecoprop), are among the pesticides frequently found in contaminated wells (4). The herbicides are, in particular, a problem in old landfill areas, from where they are leaching into the groundwater as a point source contamination (5). Phe...

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“…BPA can also partially accumulate by passing through soil and river sediments. [15] 60-600 [43] 360-1620 [18] 378-890 [9] 416-2050 [23] 1800 [40] 2-44 [43] 30-1100 [15] 35-86 [23] 110-300 [18] 700 [40] 1.2-1900 [1] 2.1-87 [13] 2.2-4230 [21] 6-34 [23] 6-68 [11] 6-500 [26] 6-881 [22] 7.5-334 [12] 55-162 [27] 192-215 [15] 460-4800 [25] b.l.q.-494 [17] b.l.q.-7000 [19] b.l.q.-9300 [28] 1-1136 [20] 1-11 [4] 79-2550 [15] 600-11000 [14] 0.17-1.25 [2] 0.58-36700 [8] 1.1-43 [42] 4.3-130 [25] 10-530 [23] 53-196 [43] 0.32 [6] Fu and Kawamura [5] showed that bisphenol A is also present in air samples. In the agricultural areas of China, its concentration in the air does not exceed 240 pg/m3, but the air samples in urban areas are more contaminated (20-2.340 pg/m 3 ).…”

Section: Occurrence In the Environmentmentioning

confidence: 99%

“…There are known cases of bisphenol A detection in drinking water in China between 15-63 ng/l and 38.9-55.8 ng/l [8]; in Canada, 100 ng/l; in the USA, up to 24 ng/l [15]; also in other countries at concentrations not exceeding 100 ng/l (0.5-99 ng/l) [1].…”

Section: Bpa In Other Matrixesmentioning

confidence: 99%

Sources of endocrine-disrupting compounds and their migration to the environment

Kryłów

Rezka

2017

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The aim of this article is to present issues related to the presence and pathways of bisphenol A emission and its migration to wastewater and the environment. Bisphenol A (BPA) is an organic compound mainly used in the production of plastics. It is classified as an endocrine disrupting compound (EDC) and should therefore not be emitted to the environment. This paper presents basic information on bisphenol A, its applications and potential sources of emission to the environment. A wide review of literature confirming the occurrence of bisphenol A in sewage, sediments, natural waters, drinking water and the atmosphere is performed. Effective wastewater treatment and neutralisation of bisphenol A in sewage sludge could partially reduce the levels of BPA pollution in the aquatic environment.

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Is biological treatment a viable alternative for micropollutant removal in drinking water treatment processes?

Cited by 301 publications

References 131 publications

Treatment of groundwater containing Mn(II), Fe(II), As(III) and Sb(III) by bioaugmented quartz-sand filters

Treatment of groundwater containing Mn(II), Fe(II), As(III) and Sb(III) by bioaugmented quartz-sand filters

Establishment of Bacterial Herbicide Degraders in a Rapid Sand Filter for Bioremediation of Phenoxypropionate-Polluted Groundwater

Sources of endocrine-disrupting compounds and their migration to the environment

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