Leachate treatment using a demonstration aged refuse biofilter

Li, Hongjiang; Gu, Yingying; Zhao, Youcai; Wen, Zhiping

doi:10.1016/s1001-0742(09)60226-6

Cited by 36 publications

(21 citation statements)

References 33 publications

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“…These compounds pose a potential pollution problem for local ground and surface waters (Esplugas et al, 2004). Leachate from mature landfills is typically characterized by a high ammonium (NH 4 + ) content, low biodegradability (low BOD 5 /COD ratio) and a high fraction of refractory and large organic molecules such as humic and fulvic acids (Acgdacg and Sponza, 2005), but leachate from young landfills contains low organic compound concentrations (Li et al, 2010). Usually young landfill leachates are treated more easily as compared to the old one (Koh et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

[RETRACTED ARTICLE]Use of a sonocatalytic process to improve the biodegradability of landfill leachate

Roodbari¹,

Nabizadeh²,

Mahvi³

et al. 2012

Braz. J. Chem. Eng.

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-Landfill leachate is one of the most important sources of toxic organic compounds for ground and surface waters. Advanced oxidation processes can offer an effective and environmentally friendly method for pretreatment of landfill leachates. In this study, an ultrasonic process was used for the pre-treatment of landfill leachate with the objective of improving its overall biodegradability, evaluated in terms of the BOD 5 /COD ratio, up to a value compatible with biological treatment. Under optimized experimental conditions (pH of 10, power of 110 watts, frequency of 60 kHz, TiO 2 concentration of 5 mg/L and exposure time of 120 min), this method showed suitability for partial removal of chemical oxygen demand (COD). The biodegradability was significantly improved (BOD 5 /COD increased from 0.210 to 0.786) which allowed an almost total removal of COD by a sequential activated sludge process.

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Section: Introductionmentioning

confidence: 99%

[RETRACTED ARTICLE]Use of a sonocatalytic process to improve the biodegradability of landfill leachate

Roodbari¹,

Nabizadeh²,

Mahvi³

et al. 2012

Braz. J. Chem. Eng.

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“…1-3 show a decrease in responses reduction efficiency. This could be due to the fact that during (10) and (11) [19,25,26].…”

Section: Resultsmentioning

confidence: 99%

“…Although biological treatments are the most common and cost-effective methods of waste water treatment, it should be considered that high amount of chemical oxygen demand (COD), biochemical oxygen demand (BOD 5 ), and low biodegradability (in terms of BOD 5 / COD ratio) in leachate characterization makes it as a refractory pollutant and classifies it as a resistant wastewater for any treatment (include biological treatment methods). In this case, to achieve better yield in order to enhance the leachate biodegradability, many researchers have worked on various treatment methods [4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Optimization of COD, apparent color, and turbidity reductions of landfill leachate by Fenton reagent

Talebi

Ismail

Teng

et al. 2014

Desalination and Water Treatment

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A B S T R A C TThe efficiency of Fenton reagent (Fe 2+ + H 2 O 2 +H + ) for the leachate generated from Pulau Burung sanitary landfill site, located in Malaysia, was evaluated with the objectives of chemical oxygen demand (COD), apparent color, and turbidity reductions. Response surface methodology was used to study the effect of hydrogen peroxide (as oxidant) and ferrous sulfate (as catalyst) on COD, apparent colour, and turbidity reductions of sanitary landfill leachate. A central composite design in two factors [hydrogen peroxide dosage (mg/L) and ferrous sulfate dosage (g/L)] was employed to build a model as well as to perform optimization of the Fenton process. The optimum results for COD, apparent color, and turbidity reductions were 68, 81, and 86%, respectively, setting [H 2 O 2 ] at 747.8 mg/L and [FeSO 4 ] at 12.8 g/L.

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“…Liang and Liu (2008) MSW degradation inside a landfill can be enhanced by leachate recirculation as observed by a number of researchers who used recirculation bioreactors for the purpose of leachate treatment (Iglesias et al, 2000;Jiang et al, 2007;Jun et al, 2007;Li et al, 2010a). Jiang et al (2007) made recirculation reactors by packing landfill waste in anaerobic columns, the schematic diagram of which is as shown in Figure 10.…”

Section: Application Of Biological and Biochemical Techniques In Reacmentioning

confidence: 99%

Contemporary Environmental Issues of Landfill Leachate: Assessment and Remedies

Mukherjee

Mukhopadhyay

Hashim

et al. 2014

Critical Reviews in Environmental Science and Technology

206

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Landfills are the primary option for waste disposal all over the world. Most of the landfill sites across the world are old and are not engineered to prevent contamination of the underlying soil and groundwater by the toxic leachate. The pollutants from landfill leachate have accumulative and detrimental effect on the ecology and food chains leading to carcinogenic effects, acute toxicity and genotoxicity among human beings. Management of this highly toxic leachate presents a challenging problem to the regulatory authorities who have set specific regulations regarding maximum limits of contaminants in treated leachate prior to disposal into the environment to ensure minimal environmental impact. There are different stages of leachate management such as monitoring of its formation and flow into the environment, identification of hazards associated with it and its treatment prior to disposal into the environment. This review focuses on: (i) leachate composition, (ii) Plume migration, (iii) Contaminant fate, (iv) Leachate plume monitoring techniques, (v) Risk assessment techniques, Hazard rating methods, mathematical modeling, and (vi) Recent innovations in leachate treatment technologies.However, due to seasonal fluctuations in leachate composition, flow rate and leachate volume, the management approaches cannot be stereotyped. Every scenario is unique and the strategy will vary accordingly. This paper lays out the choices for making an educated guess leading to the best management option.

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Leachate treatment using a demonstration aged refuse biofilter

Cited by 36 publications

References 33 publications

[RETRACTED ARTICLE]Use of a sonocatalytic process to improve the biodegradability of landfill leachate

[RETRACTED ARTICLE]Use of a sonocatalytic process to improve the biodegradability of landfill leachate

Optimization of COD, apparent color, and turbidity reductions of landfill leachate by Fenton reagent

Contemporary Environmental Issues of Landfill Leachate: Assessment and Remedies

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