Landfill leachate treatment: Review and opportunity

Renou, S.; Givaudan, J.G.; Poulain, Sébastien; Dirassouyan, F.; Moulin, P.

doi:10.1016/j.jhazmat.2007.09.077

Cited by 2,153 publications

(1,261 citation statements)

References 168 publications

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“…However, leachate from landfills constitutes secondary wastewater exhibiting acute and chronic toxicity polluting soil, groundwater, and surface water (Berge et al 2005;Renou et al 2008;Salem et al 2008). They are usually characterized by high concentrations of organics, ammonium, and inorganic salts including heavy metals (Kulikowska and Klimiuk 2008).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen removal through different pathways in an aged refuse bioreactor treating mature landfill leachate

Xie

et al. 2012

Appl Microbiol Biotechnol

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In this study, an aged refuse bioreactor was constructed to remove nitrogen in a mature landfill leachate. The nitrogen removal efficiency and the microbial community composition in the bioreactor were investigated. The results showed that the aged refuse bioreactor removed more than 90 % of total nitrogen in the leachate under the nitrogen loading rate (NLR) of 0.74 g/kg (vs) day, and the total nitrogen removal rate decreased to 62.2 % when NLR increased up to 2.03 g/kg (vs) day. Quantitative polymerase chain reaction results showed that the average cell number of ammoniaoxidizing bacteria in the bioreactor was 1.58×10 8 cells/g, which accounted for 0.41 % of total bacteria. The number of anammox bacteria in the reactor was 1.09×10 8 cells/g, which accounted for 0.27 % of total bacteria. Isotopic 15 N tracing experiments showed that nearly 10 % of nitrogen was removed by anammox. High-throughout 454 pyrosequencing revealed that the predominant bacteria in the bioreactor were Proteobacteria, Chloroflexi, Actinobacteria, Bacteroidetes, and Gemmatimonadetes, including various nitrifiers and denitrifiers with diverse heterotrophic and autotrophic metabolic pathways, supporting that nitrogen was removed through different pathways in this aged refuse bioreactor.

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Section: Introductionmentioning

confidence: 99%

Nitrogen removal through different pathways in an aged refuse bioreactor treating mature landfill leachate

Xie

et al. 2012

Appl Microbiol Biotechnol

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“…For a medium aged landfill the COD values range from 1180 to 9500 mg/L whereas for a old landfill, the COD may range between 100-10,000 mg/L [14]. The BOD 5 values for medium and old landfill range from 330-1400 mg/L and 3-800 mg/L respectively [14]. The COD and BOD 5 values of the leachate shown in Table III indicate that the landfill is old.…”

Section: A Characteristics Of Landfill Leachatementioning

confidence: 99%

“…The ratio of BOD 5 /COD (which generally varies from 0.04 to 0.70) decreases rapidly with the aging of the landfills [6]. For a medium aged landfill the COD values range from 1180 to 9500 mg/L whereas for a old landfill, the COD may range between 100-10,000 mg/L [14]. The BOD 5 values for medium and old landfill range from 330-1400 mg/L and 3-800 mg/L respectively [14].…”

Section: A Characteristics Of Landfill Leachatementioning

confidence: 99%

Adsorption of O-Cresol in Landfill Leachate Using Activated Carbon

Shabiimam¹,

Dikshit²

2012

IJESD

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Abstract-The adsorptive removal of o-cresol from dilute aqueous solutions was carried using commercial activated carbon. Batch mode studies were performed by varying parameters such as pH, adsorbent dosage and time. It was found that adsorption with activated carbon can remove up to 95% of o-cresol from the wastewater within 10 minutes. The optimum process variables of this adsorption of o-cresol were found as pH 8 and adsorption dosage 5 g/L. The adsorption followed Langmuir Isotherm.Index Terms-Activated carbon, adsorption, freundlich and langmuir isotherm, o-Cresol.

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“…In order to meet these requirements, especially when discharging the effluent into surface waters it is necessary to use highly efficient treatment systems, in which the removal efficiency of contaminants depends on the intended degree of treatment. In recent years, the possibility of treating landfill leachate in SBRs, which are an alternative to the conventional activated sludge method, has received considerable attention [5][6][7][8][9][10][11]. Sequencing batch reactors are successfully used for the treatment of municipal and industrial waste water and reject waters generated during the processing of sewage sludge.…”

Section: Introductionmentioning

confidence: 99%

Treatment of industrial wastewater in the sequential membrane bioreactor

Świerczyńska

Bohdziewicz

Puszczało

2016

Ecological Chemistry and Engineering S

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Abstract:The aim of presented study which was associated with modification of the various work cycle phases duration in the membrane bioreactor, was to reduce the concentration of phosphate phosphorus during the leachate co-treatment with dairy wastewater. The experimental set-up was comprised of the membrane bioreactor equipped with the immersed membrane module installed inside the reactor chamber, and the equalization tank. During the co-treatment experiment performance the excessive activated sludge was constantly removed from the membrane bioreactor in order to keep its concentration at 3.5 g/dm 3 . The load of the sludge with the contaminants was equal to 0.06 g COD/g d.m. d. The concentration of oxygen was equal to 3 mg/dm 3 . The share of the leachates in the co-treated mixture was equal to 10% vol. The membrane bioreactor worked as the sequential biological reactor, in two cycles per day. Duration of each phase was equal as follows: filling -10 min -with concurrent mixing phase lasting for 4 h, aeration phase -1 h, sedimentation -30 min and removal from purified wastewater -30 min. After 4 weeks under these conditions, the modification of the sequential membrane bioreactor's work cycle was made. The duration of particular phases was shortened and two phases of denitrification and nitrification were introduced. Work cycle phases were modified as follows: filling -10 min -with concurrent mixing phase lasting for 3 h, aeration phase -4 h, mixing phase -1 h, aeration phase -3 h, sedimentation -30 min and removal from purified wastewater -30 min. Based on research, it was found that the change in membrane bioreactors' work cycle affects the effectiveness of treated mixture. It was found that the applied modification of phases of the cycle of the MSBR did not affect the concentration of organic compounds and the no significant changes in the concentration of ammonium and nitrate nitrogen in the effluent from the bioreactor were observed, however, the total nitrogen removal efficiency increased by 50%. Alteration of MSBR reactor particular phases duration caused reduction of concentration of P-PO4 3 from 4.7 to 2.9 mg/dm 3 .

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Landfill leachate treatment: Review and opportunity

Cited by 2,153 publications

References 168 publications

Nitrogen removal through different pathways in an aged refuse bioreactor treating mature landfill leachate

Nitrogen removal through different pathways in an aged refuse bioreactor treating mature landfill leachate

Adsorption of O-Cresol in Landfill Leachate Using Activated Carbon

Treatment of industrial wastewater in the sequential membrane bioreactor

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