Influence of Waste Age on Landfill Leachate Quality

Lee, Aik Heng; Nikraz, Hamid; Hung, Yung Tse

doi:10.7763/ijesd.2010.v1.68

Cited by 48 publications

(25 citation statements)

References 11 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Cortez et al (2010a) reported that, in leachate from an old landfill located in Portugal, COD and BOD 5 were as low as 743 and 10 mg/L. Similarly, Lee et al (2010) found that, in old leachate, the mean concentrations of COD, BOD 5 and…”

Section: Characteristics Of Landfill Leachatementioning

confidence: 96%

Treatment of stabilized landfill leachate in an integrated adsorption–fine-ultrafiltration system

Kulikowska

Zielińska

Konopka

2018

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

This study investigated the feasibility of using an adsorption-fine-ultrafiltration system for removing organics from stabilized landfill leachate. For adsorption, Norit SX2 powdered activated carbon was used; the fine-ultrafiltration system was equipped with a ceramic membrane. Due to low organics removal efficiency in fine-ultrafiltration alone (series 1) (46.5% of chemical oxygen demand, 22.1% of dissolved organic carbon), two doses of activated carbon were used for adsorption before fine-ultrafiltration: 0.2 g/L (series 2) and 1 g/L (series 3). Although organics removal efficiency at both doses of Norit SX2 differed (12.9 and 34.5% of chemical oxygen demand, 12.2 and 54.7% of dissolved organic carbon, at 0.2 and 1 g/L, respectively), permeate quality did not differ substantially. Although the use of Norit SX2 improved permeate quality in comparison with fine-ultrafiltration alone (220 mg/L in series 2 and 209 mg/L in series 3 vs. 842 mg/L in series 1), its particles blocked the membrane and lowered the permeate flux even at the lower dose. In the series with adsorption, permeate flux was about 10 times lower than during fine-ultrafiltration alone. This indicates that, in fine-ultrafiltration preceded by adsorption on activated carbon, it is reasonable to use the lower dose of Norit SX2 because the efficiency of treatment is similar to that at the higher dose, but the reduction in permeate flux is somewhat less. These results indicate that the possibility of using adsorption-fine-ultrafiltration in the practice of leachate treatment is limited because of blocking membrane pores with particles of activated carbon.

show abstract

Section: Characteristics Of Landfill Leachatementioning

confidence: 96%

Treatment of stabilized landfill leachate in an integrated adsorption–fine-ultrafiltration system

Kulikowska

Zielińska

Konopka

2018

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…It is also believed that ammonia is mainly released during the organic matter decomposition (Burton and Watson-Craik 1998). Thus ammonia appears to be a good indicator for organic nitrogen in the leachate (Lee et al 2010). The piggery wastewater has not contained nitrate nitrogen because it was taken soon after its generation and without preliminary treatment.…”

Section: Landfill Leachatementioning

confidence: 99%

Wastewater treatment in an integrated laboratory system

Lavrova

Koumanova

2017

Environ. Earth Ecol.

View full text Add to dashboard Cite

Integrated laboratory system consisted of three stages -activated sludge reactor, biofilter and subsurface vertical flow wetland was used to treat two types of wastewaters differed in their generation and pollution. Wastewaters from a pig farm as well as from a landfill site for domestic wastes were used in the experiments. The BOD/COD ratio of the wastewaters from a pig farm and from the landfill leachate was 0.5 and 0.07, respectively. In the first stage of the integrated system was achieved COD removal (48 % for the piggery wastewater for 3 days and 62.3 % for the landfill leachate after 4 days). BOD removal (55.6 %) for the piggery wastewater was achieved in 3 days and 24.9 % -for the landfill leachate after 4 days. The decreasing of organics at aerobic conditions was accompanied with the ammonium ions decreasing -1.5 times for the piggery wastewater and 4 times for the leachate. In the second stage -biofilter without aeration, an additional organic loading decreasing was achieved. The COD decreased from 820.9 mg/dm 3 to 274.3 mg/dm 3 for piggery wastewater and for the leachate -from 869.5 mg/dm 3 to 423.6 mg/dm 3 . The BOD values decreased from 384.1 mg/dm 3 to 106.8 mg/dm 3 for the piggery wastewater and for leachate -from 117.8 mg/dm 3 to 57.4 mg/dm 3 . The ammonium ions were eliminated from both types of wastewaters. In the third stage (subsurface vertical flow wetland) the emission standards for discharge into the sewage collection systems or into the water bodies are met.

show abstract

“…Due to the high concentration of contaminants, advanced technological treatments are required to reach the prescribed emission standards (Liu et al, 2015). A major concern is related to the qualitative changes which leachate undergoes over time during the landfill management phases (Kulikowska and Klimiuk, 2008;Lee et al, 2010). Young leachates with high BOD/ COD ratio, high ammonium content and low pH can be successfully treated by means of biological treatment, while alternative treatments are used for the old leachates characterized by a significant fraction of recalcitrant compounds (humic acid, fulvic acid) and a high ionic strength (Stegmann and Ehrig, 1981;Cossu et al, 1992;Renou et al, 2008).…”

Section: Introductionmentioning

confidence: 99%