Municipal landfill leachate characteristics and feasibility of retrofitting existing treatment systems with deammonification – A full scale survey

Mohammad-pajooh, Ehsan; Weichgrebe, Dirk; Cuff, Graham

doi:10.1016/j.jenvman.2016.10.061

Cited by 60 publications

(18 citation statements)

References 44 publications

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“…With the aging of landfills, the susceptibility of leachate to biological degradation processes decreases, and their composition is less fluctuating [50]. As a result, leachate from old landfills is characterized by lower COD values (within the range of several hundred to several thousand mg O 2 /dm 3 ) [51], which was confirmed by the results of the research.…”

Section: Discussionsupporting

confidence: 59%

Differences in the Composition of Leachate from Active and Non-Operational Municipal Waste Landfills in Poland

Wdowczyk

Szymańska‐Pulikowska

2020

Water

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Leachate formation is one of the many environmental hazards associated with landfilling. The leachate may migrate from the landfill to surface water and groundwater, posing a potential threat to aquatic ecosystems. Moreover, its harmful effect on human health and life has been proven. Due to the risks that landfill leachates may pose, it is necessary to control the state of the environment in their surroundings. The paper presents an example of the application of selected statistical methods (basic statistics, statistical tests, principal component analysis) to assess the impact of individual pollution indicators on the quality of landfill leachates. The conducted analysis showed the existence of significant differences between the surveyed active (Legnica, Jawor) and non-operational (Wrocław, Bielawa) landfills in Poland. These differences were especially visible in the cases of the following: electric conductivity (EC) (non-operational landfills 1915–5075 μS/cm, active 5093–11,370 μS/cm), concentrations of total Kjeldahl nitrogen (TKN) (non-operational landfills 0.18–294.5 mg N/dm3, active 167.56–907.4 mg N/dm3), chemical oxygen demand (COD), organic nitrogen (ON), ammonium nitrogen (AN), total solids (TS), total dissolved solids (TDS), total suspended solids (TSS), sulfates, chlorides, sodium, potassium, calcium, magnesium and nickel. Selected indicators should help to determine the progress of decomposition processes inside the landfill and the potential impact of leachate on the environment, and should be used in the mandatory monitoring of landfills.

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Section: Discussionsupporting

confidence: 59%

Differences in the Composition of Leachate from Active and Non-Operational Municipal Waste Landfills in Poland

Wdowczyk

Szymańska‐Pulikowska

2020

Water

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“…It can thus be stated that the composition of leachates may considerably vary from one place to another, as well as in the same site and with the seasons of the year (MOHAMMAD-PAJOOH et al, 2017). It is therefore necessary to obtain the largest amount of information about a particular leachate under study, correlating its physical and chemical characteristics with the treatment processes involved.…”

Section: Physicochemical Characterization Of the Untreated Landfill Smentioning

confidence: 99%

“…This occurs because this landfill does not meet some design requirements listed in the National Policy for Solid Wastes (Brazil) (Silva et al, 2016;2017). It is therefore necessary to permanently characterize the physical-chemical parameters of the leachate material from the controlled landfill as a way of monitoring the landfill activity, and to propose solutions to possible remediation (Gomes et al, 2016;Peng, 2017;Mandal et al, 2017;Mohammad-Pajooh et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Characterization of controlled landfill leachate from the city of Guaratinguetá - SP, Brazil

Peixoto¹,

Salazar²,

Barboza³

et al. 2018

Rev. ambiente água

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This research evaluated the physicochemical parameters of a leachate sample from a controlled landfill in the city of Guaratinguetá-SP. The evaluation was conducted using spectrometric and spectrophotometric methods in order to assess the formation of persistent compounds. The selection of parameters was based on the CETESB Article 18 and CONAMA 357/05 Article 34, as well as organic characterization methods, such as FTIR, NMR (1H-NMR, 13C-NMR and APT), GC-MS, molar mass distribution and elemental analysis (CHN). Chemical and physical stability were also verified. The ammoniacal nitrogen concentration is 20 times greater than tolerance limit established by law (20 mg L -1 ). The Ba and Ni presented concentrations above those permitted by the legislation (CETESB Article 18 and CONAMA 357/05 Article 34). Those values of chemical oxygen demand (COD) and total organic carbon (TOC) were 1013 mg L -1 and 286 mg L -1 , respectively. It was not possible to determine the biochemical oxygen demand (BOD) of slurry sample. In this sense, the biodegradability parameter for the slurry studied was Non-Determinable (ND), indicating that the organic matter of the slurry studied is recalcitrant. Recalcitrant humic substances of landfill leachate the present low polydispersity. These refractory acids play a detached role in carrying pollutants in the environment with regard to carrying toxic metals and pesticides. Finally, it was possible to verify that the humic acids' complexing capacity indicates that hydroxyl and carboxyl groups may exist in larger quantities than the nitrogen and sulfur groups. Further, the high content of metals may indicate that the waste was not properly separated.

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“…Biological techniques such as nitritation/denitritation, deammonification and anaerobic ammonium oxidation (anammox) in moving bed bioreactor configuration, or membrane-based processes such as a membrane bioreactor integrated with an anoxic tank could also been used (Mohammad-pajooh et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Reduction of nitrogen content in landfill leachate using microalgae

Casazza¹,

Rovatti²

2018

Desalination and Water Treatment

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Landfill leachate contains large amounts of biodegradable or refractory to biodegradation organic materials, where organic and inorganic salts, ammonianitrogen, heavy metals and chlorinated consist important groups. Leachate from run out municipal landfills has a lower BOD5 but still high contents of N-NH4+. Usually, the ammonium concentration could be reduced by nitrification processes followed by biological denitrification, but for leachate from run out landfills this step requires the addition of organic molecules (e.g. methanol or acetic acid) as carbon source. To overcome this drawback, the authors suggested the use of mixotrophic microalgae to reduce the nitrogen content from landfill leachate before and after nitrification processes. In fact, microalgae could potentially offer many advantages in leachate treatment, being able to use inorganic nutrients for their heterotrophic growth without an aerobic environment. Microalgae cultures were performed with different quantities of landfill leachate after microfiltration pretreatment in order to have different nitrogen concentrations in water. Additional runs were performed in landfill leachate after biological nitrification pretreatment. Runs were compared with those carried out in classic Bold Basal Medium taken as a control. During the growth, biomass was observed microscopically and the ammonium, nitrate, nitrite contents were determined.

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Municipal landfill leachate characteristics and feasibility of retrofitting existing treatment systems with deammonification – A full scale survey

Cited by 60 publications

References 44 publications

Differences in the Composition of Leachate from Active and Non-Operational Municipal Waste Landfills in Poland

Differences in the Composition of Leachate from Active and Non-Operational Municipal Waste Landfills in Poland

Characterization of controlled landfill leachate from the city of Guaratinguetá - SP, Brazil

Reduction of nitrogen content in landfill leachate using microalgae

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