Fate of Natural Organic Matter (NOM) during Groundwater Recharge using Reclaimed Water

Drewes, Jörg E.; Fox, Peter

doi:10.2166/wst.1999.0486

Cited by 53 publications

(41 citation statements)

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“…Steady infiltration conditions in RBF systems generate a special bioactive filtration layer at the water/sediment interface (Matthess, 1990). Amy et al (1993), Kivimaeki et al (1998), and Drewes and Fox (1999) observed the highest removal of DOC and TOX within the first meter of infiltration. Wang (2002) also reported that the majority of NOM removal occurred within the first 15 m of infiltration.…”

Section: Dissolved Organic Carbonmentioning

confidence: 89%

Natural Organic Matter Removal During Riverbank Filtration: Current Knowledge and Research Needs

Drewes

Summers

Riverbank Filtration

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Section: Dissolved Organic Carbonmentioning

confidence: 89%

Natural Organic Matter Removal During Riverbank Filtration: Current Knowledge and Research Needs

Drewes

Summers

Riverbank Filtration

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“…The ability of the RLS to effectively remove TSS, BOD, and COD at all depths as compared to the sandy and the other soil columns can be attributed to reduced filtration rates thus increasing the residence time for effective filtration and microbial reaction. Infiltration rate has a direct impact on retention time and hence contaminant removal processes with the time defendant behaviour more pronounced up to 1.5 m depth in the vadose zone (Drewes & Fox, 1999). The rare increase in COD concentration in the LS during the five weeks run between 0.3 m and 0.8 m can be attributed to possible short circuiting.…”

Section: Physico-chemical Parameters In Soil Columnsmentioning

confidence: 99%

The Potential of Subsurface Infiltration for the Treatment of Biofil Toilet Technology Effluent

Owusu-Antwi¹,

Buamah²,

Essandoh³

et al. 2015

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Generally discharges from on-site sanitation (OSS) system could be a source of pollution to the environment if not well managed. This work illustrates the potential of subsurface infiltration to treat secondary effluent from a novel on-site vermi-biofiltration system called the Biofil Toilet Technology (BTT). In practice, the BTT effluent is discharged via sub-surface infiltration. The focus of the research was to determine possible contaminant removal within the first 1.5 m depth of soil column. To achieve this objective, laboratory scale soil columns were designed and constructed for the treatment of secondary domestic wastewater from the BTT. Four different soil columns, each with 1.5 m depth of soil (sandy soil-SS, loamy soil-LS, clayey soil-CS, and red laterite soil-RLS) and fifth column with 0.45 m multi-layer sand filter were constructed and characterized. The columns were fed with the BTT effluent and sampled at ports spaced at 0.3 m, 0.8 m, and 1.5 m depths. Using the samples, parameters like COD, BOD 5 , TSS, T-N, NO 3 -N, NO 2 -N, PO 4 -P, and pathogenic indicator microbes were monitored. RLS and SS columns efficiently removed COD, BOD 5 , and TSS from the BTT effluent below the Ghana Environmental Protection Agency (GH EPA) guideline values. Up to 99% COD removal were observed in RLS column. A two to five log pathogen removal was recorded for the soil columns. The RLS and SS were found to have a high efficacy for contaminant removal with up to 80% of all contaminants being removed at a depth of 0.3 m along the soil columns. Thus the subsurface infiltration system can serve as a promising technology for the BTT effluent treatment. The study recommends the incorporation of infiltration systems to the BTT especially for areas with high water table or clayey soils.

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“…Especially, aerobic microbial activities in the upper layer of soil largely contribute to the removal of DOM during SAT (Drewes and Fox, 1999;Kolehmainen et al, 2007). Meanwhile, there were few researchers focused on DOM removal mechanism, based on the material balances, in the upper layer with active DOM removal.…”

Section: Introductionmentioning

confidence: 99%

Removal of Dissolved Organic Matter and Disinfection By-products Formation Potential in the Upper Layer during Soil Aquifer Treatment

Suzuki

Kameda

Takabe

et al. 2015

J. of Wat. & Envir. Tech.

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Objectives of this study are to comprehend the removal characteristics of dissolved organic matter (DOM) and disinfection by-products formation potential (DBPsFP) in the upper layer, which has active microbial activities, of soil aquifer treatment for wastewater reuse. Three columns, in which sand was packed with the height of 5, 10 and 30 cm, respectively, were set, and wastewater effluent was continuously discharged. Dissolved organic carbon (DOC) and DBPsFP were measured in the influent and effluent from the columns. 22.4% of DOC was removed only at the 5 cm thick layer from the surface, and the removal efficiency increased to 40.1% by the 30 cm infiltration. Therefore, it was cleared that DOM was actively removed by the upper layer infiltration, and most DOM removal was attributed to biodegradation. It was found that the removal characteristics of each DBPs precursor by biodegradation in the upper layer were different. Chloroform FP and dibromochloromethane FP were also reduced by biodegradation in the 30 cm infiltration (removal ratio was 34.4 and 29.2%, respectively); meanwhile, bromodichloromethane FP did not decrease.

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Fate of Natural Organic Matter (NOM) during Groundwater Recharge using Reclaimed Water

Cited by 53 publications

References 0 publications

Natural Organic Matter Removal During Riverbank Filtration: Current Knowledge and Research Needs

Natural Organic Matter Removal During Riverbank Filtration: Current Knowledge and Research Needs

The Potential of Subsurface Infiltration for the Treatment of Biofil Toilet Technology Effluent

Removal of Dissolved Organic Matter and Disinfection By-products Formation Potential in the Upper Layer during Soil Aquifer Treatment

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