Evaluation of leachate dissolved organic nitrogen discharge effect on wastewater effluent quality

Bolyard, Stephanie C.; Reinhart, Debra R.

doi:10.1016/j.wasman.2017.03.025

Cited by 48 publications

(21 citation statements)

References 16 publications

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“…Sample collection times were based on landfill-to-WWTP travel time and average WWTP average hydraulicretention times based on previous research at these sites. 40 Sampled landfills were active municipal-owned facilities permitted to accept municipal and non-hazardous waste that varied in annual leachate volume produced (5.89 to 71.9 ML) and waste loads (147 000 to 737 000 metric tons, Table 1). Landfill waste was generally municipal waste (54 to 71%) and construction debris (26 to 34%).…”

Section: Description Of Sitesmentioning

confidence: 99%

Landfill leachate contributes per-/poly-fluoroalkyl substances (PFAS) and pharmaceuticals to municipal wastewater

Masoner

Kolpin

Cozzarelli

et al. 2020

Environ. Sci.: Water Res. Technol.

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Section: Description Of Sitesmentioning

confidence: 99%

Landfill leachate contributes per-/poly-fluoroalkyl substances (PFAS) and pharmaceuticals to municipal wastewater

Masoner

Kolpin

Cozzarelli

et al. 2020

Environ. Sci.: Water Res. Technol.

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“…The SPE fractionated the bDON and rDON based on their hydrophilic and hydrophobic natures, respectively. This method was applied by Bolyard et al (2017) to fractionate DON in landfill leachate.…”

Section: Evaluation Of Dissolved Organic Nitrogen Bioavailability Of mentioning

confidence: 99%

“…Mature leachates also have high concentrations of nitrogen-containing compounds which must be managed during post-closure care (PCC) of a landfill particularly where nitrogen emissions are tightly restricted. Dissolved organic nitrogen (DON) in leachate has low molecular weight and is difficult to remove through biological treatment (Bolyard et al, 2017). Research has shown that humic substances irradiated with sunlight were able to support bacterial growth as a result of increased bioavailability of carbon and nitrogen.…”

Section: Introductionmentioning

confidence: 99%

Treatment of leachate organic matter through sunlight driven processes

et al. 2019

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Leachate from mature, stabilized landfills is recalcitrant in nature resulting from high concentrations of humic substances, such as humic acids and complex poorly defined organic matter. This research focused on the behavior and fate of leachate organic matter (LOM) in aquatic sunlit systems to address the extent and mechanisms of LOM photodegradation by exposing leachate to natural sunlight in central Florida for a period of 90 days. Transformation processes were measured using ultraviolet-visible (UV-Vis) spectroscopy, fluorescence excitation-emission matrix spectroscopy (EEMs), size-exclusion chromatography (SEC), and chemical oxygen demand (COD) over the test period. Results of the study suggest that photolytic, and in some cases biological, reactions were responsible for the treatment of LOM shown by transformation of high molecular weight recalcitrant material to lower molecular weight material.

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“…Dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) are important components of dissolved organic matter (DOM) in aquatic environments, soil environments, and other parts of surface environments . DOC and DON are two different types of organic compounds: DOC is made up of the hydrophobic fraction and high molar mass compounds, whereas DON is characterized by small high molar mass compounds and hydrophilic fractions .…”

Section: Introductionmentioning

confidence: 99%

A cationic polymer enhanced PAC for the removal of dissolved aquatic organic carbon and organic nitrogen from surface waters

et al. 2018

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Dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) are important components of the aquatic environment and may produce harmful disinfection by-products through chlorination associated with water treatment processes. Therefore, it is necessary to remove them from the water. Coagulation is a cost-effective water treatment technique as the key unit in the pretreatment of drinking water but deals with DON poorly. We present a study to investigate the enhancement of poly aluminum chloride (PAC) using a cationic polymer for the removal of both DON and DOC. The cationic dimethyl diallyl ammonium chloride (PDMDAAC) polymer was hybridized with PAC to remove DON and DOC. The results showed that the PDMDAAC increased the charge neutralization capacity of PAC and floc aggregation, thereby increasing the settling efficiency of the flocs. The PDMDAAC increased the amount of colloidal species in PAC, which was beneficial to the formation of adsorption-bridging. With the increase of pH, a greater proportion of colloidal adsorption sites were used in the removal of DON. The DOC, DON, and turbidity removal were dependent on multiple interactions through charge neutralization, adsorption-bridging, and floc sweeping. However, DOC and DON removal were primarily determined by adsorption-bridging and floc sweeping, while turbidity removal was mainly dependent on charge neutralization.

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Evaluation of leachate dissolved organic nitrogen discharge effect on wastewater effluent quality

Cited by 48 publications

References 16 publications

Landfill leachate contributes per-/poly-fluoroalkyl substances (PFAS) and pharmaceuticals to municipal wastewater

Landfill leachate contributes per-/poly-fluoroalkyl substances (PFAS) and pharmaceuticals to municipal wastewater

Treatment of leachate organic matter through sunlight driven processes

A cationic polymer enhanced PAC for the removal of dissolved aquatic organic carbon and organic nitrogen from surface waters

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