Complexation characteristics of sanitary landfill leachates

Knox, K.; Jones, Philip H.

doi:10.1016/0043-1354(79)90218-5

Cited by 43 publications

(19 citation statements)

References 12 publications

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“…In a recent work, above 90% nitrification of leachate was achieved in laboratory and on-site pilot aerobic crushed brick filters with loading rates between 100 and 130 mg NH 4 + -N L −1 day −1 at 25 • C and 50 mg NH 4 + -N L −1 day −1 even at temperatures as low as 5-10 • C, respectively [90]. In the last decade, maximum ammonia rejection of 97 and 75% in a trickling filter were, respectively, claimed by Knox and Jones [93] and Martienssen and Schops [78].…”

Section: Attached-growth Biomass Systemsmentioning

confidence: 93%

Landfill leachate treatment: Review and opportunity

Renou

Givaudan

Poulain

et al. 2008

Journal of Hazardous Materials

2,181

1,032

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Section: Attached-growth Biomass Systemsmentioning

confidence: 93%

Landfill leachate treatment: Review and opportunity

Renou

Givaudan

Poulain

et al. 2008

Journal of Hazardous Materials

2,181

1,032

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“…The third leachate had a high dissolved organic carbon content (3200 mg C/l), and most of the Cd in this leachate was complexed with the organic matter. Knox and Jones (1979) showed that both low-molecular-weight compounds (<500) comparable to simple carboxylic acids and high-molecular-weight compounds (>10000) contributed significantly to cadmium complexation. Bolton and Evans (1991) performed some speciation calculations on four leachates.…”

Section: Heavy Metal Mobilizing Processes In Landfillsmentioning

confidence: 99%

Present and Long-Term Composition of MSW Landfill Leachate: A Review

Kjeldsen

Barlaz

Rooker

et al. 2002

Critical Reviews in Environmental Science and Technology

2,055

1,001

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ABSTRACT:The major potential environmental impacts related to landfill leachate are pollution of groundwater and surface waters. Landfill leachate contains pollutants that can be categorized into four groups (dissolved organic matter, inorganic macrocomponents, heavy metals, and xenobiotic organic compounds). Existing data show high leachate concentrations of all components in the early acid phase due to strong decomposition and leaching. In the long methanogenic phase a more stable leachate, with lower concentrations and a low BOD/COD-ratio, is observed. Generally, very low concentrations of heavy metals are observed. In contrast, the concentration of ammonia does not decrease, and often constitutes a major long-term pollutant in leachate. A broad range of xenobiotic organic compounds is observed in landfill leachate. The long-term behavior of landfills with respect to changes in oxidation-reduction status is discussed based on theory and model simulations. It seems that the somewhere postulated enhanced release of accumulated heavy metals would not take place within the time frames of thousands of years. This is supported by a few laboratory investigations. The existing data and model evaluations indicate that the xenobiotic organic compounds in most cases do not constitute a major long-term problem. This may suggest that ammonia will be of most concern in the long run.

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“…In the last decade, maximum ammonia rejection of 97 and 75 % in a trickling filter were respectively claimed by [34] and Martienssen and Schops [49] . Moving-Bed Biofilm Reactor (MBBR)-process is based on the use of suspended porous polymeric carriers, kept in continuous movement in the aeration tank, while the active biomass grows as a biofilm on the surfaces of them.…”

Section: Landfill Leachate Treatmentsmentioning

confidence: 99%

Review on Landﬁll Leachate Treatments

Аббас¹

2009

American Journal of Applied Sciences

152

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Problem Statement: Sanitary landfilling is the most common way to eliminate solid urban wastes. An important problem associated to landfills is the production of leachates. This study is a review of landfill leachate treatments. Approach: The advantages and disadvantages of the various existing leachate treatments discussed under the items: (i) Leachate channeling (combined treatment with domestic sewage, recycling) (ii) Biological processing (aerobic and anaerobic) (iii) Chemical/physical treatment (flotation, coagulation/flocculation, chemical precipitation, adsorption, ammonium stripping, chemical oxidation, ion exchange and electrochemical treatment) (iv) Membrane filtration (microfiltration, ultrafiltration, nanofiltration and reverse osmosis). Conclusion: The major fraction of old or biologically treated leachate was large recalcitrant organic molecules that are not easy removed during biological treatment. So that, in order to meet strict quality standards for direct discharge of leachate into the surface water, a development of integrated methods of treatment, a combination of biological, chemical, physical and membrane process steps, were required. Today, the use of membrane technologies, more especially Reverse Osmosis (RO), either as a main step in a landfill leachate treatment chain or as single post-treatment step had shown to be an indispensable means of achieving purification.

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Complexation characteristics of sanitary landfill leachates

Cited by 43 publications

References 12 publications

Landfill leachate treatment: Review and opportunity

Landfill leachate treatment: Review and opportunity

Present and Long-Term Composition of MSW Landfill Leachate: A Review

Review on Landﬁll Leachate Treatments

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