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A sanitary landfill

Sanitary Landfill Leachate Past and Future

INTRODUCTION Within the last many years there have actually been major advances in the variety, engineering and control of landfill sites; however it is still a fact that at many sites the generation of very polluting sanitary landfill leachates is still the significant possible environmental problem to be conquered. Although research and experience continue to […]

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leachate recirculation in a landfill

Leachate Recirculation Practise and Views

To the site operator leachate recirculation would certainly appear like commonsense as some of the leachate recirculated will be taken in by the waste and not re-appear. The leachate will gain some treatment – especially a significant reduction in BOD and COD by anaerobic digestion within a methanogenic landfill. In addition, if leachate is being […]

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High Strength Leachate

When people refer to high strength leachate they are normally referring to the landfill leachate from a sanitary landfill which has percolated slowly through the waste. That is leachate and has been extracted by the leachate collection and pumping system. Usually high strength leachate has ammoniacal nitrogen concentrations above 500 mg/l up to 3.500 mg/l, […]

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Air Ammonia Stripping

Air Ammonia Stripping is a leachate treatment process which is now largely outdated and seldom used. During the 1980s in the United Kingdom it was seen as a potential physico-chemical leachate treatment process which would be suitable for the treatment of leachate from sanitary (lined and capped) landfills, however, although a number of pilot scale […]

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Landfill leachate composition - image for page

Landfill Leachate Composition

Landfill leachate composition for United Kingdom Landfills was first published in the Waste Management Papers published by the UK Department of Environment. Waste Management Paper 26 contains the most recent table of Landfill Leachate Composition before the WMP series was superseded by later documents, notably the DoE’s Leachate Report of 1995. However, the original table, […]

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Cowpen-Bewley-lagoon-2-350wd

How Do You Treat Leachate?

First of all when asked the question, “How Do You Treat Leachate?”, we would like to make a distinction between true treatment which involves converting environmentally damaging substances to less, or non-toxic, ones, and simply concentrating the contaminants from the water in leachate to give a volume reduction. In the water industry both are known as […]

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leachate-attenuatio-zone-diagram

Exactly What Is a Leachate Attenuation Zone?

The Leachate Attenuation Zone Explained A leachate attenuation zone is essentially a buffer zone around a landfill that protects against contamination of groundwater by its pollution from dangerous or hazardous wastes. Lots of older landfills were developed before stricter laws were implemented have been described as having “leachate attenuation zones”. In the UK these types […]

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