The way to Assess Whether Leachate Treatment in Constructed Wetlands Would be Suitable for Your Landfill
Leachate Treatment In 3 Basic Steps
"Leachate treatment in constructed wetlands that it is often worthwhile to consider the use of them at landfill
sites, however, for full strength sanitry landfills initial leachate concentration is usually too high to use
them unless a primary stage of biological aeration treatment is applied first"
There are many methods worth looking at looking for landfill leachate treatment projects and landfill leachate
treatment systems designers have got a lot to pick from. To assess whether leachate treatment in constructed
wetlands would be suitable for your landfill leachate treatment. It isn't an infrequent question asked. There is
certainly great news for many who decide on this method. It is really not very difficult to work out whether
wetland treatment will work for your landfill, once you know how.
This article will make it less difficult for any person with this objective to be successful and to truly assess
whether leachate treatment in constructed wetlands would be suitable for your landfill leachate treatment. If you
wish to learn how to assess whether leachate treatment in constructed wetlands would be suitable for your landfill
leachate treatment in only 3 simple steps, please read on...
The 1st step is to obtain a full laboratory water quality analysis report for your landfill site leachate. The list
will vary according to the requiements of the local environmental protection regulator, but should include BOD,
COD, S/S, pH, Ammonical Nitrogen (usually expressed as N), and a range of heavy metals analysed according to which
may be analysed. Fe would be included for high Fe leachates etc. In some cases a trace compound anaylysis would be
included for herbicides pesticides and other dangerous subtsances which may be present in the leachate.
You need to do that considering that unless the leachate quality is known no case can be made for the acceptability
of low cost constructed wetland treatment, and the local environmental regulator would be likely to reject any
application for leachate treatment in constructed wetlands as a result. Simultaneously, you'll want to keep away
from any suggestion that this method is not very scientifically based, and ensure at all time that, for site which
are in Europe, or where EU Directives and waste regualtions apply there is any leakage of the leachate into
underlying strata, which would be contrary to the EU Groundwater Directive and local environmental regulations,
which require all grounwater to be considered a resource whether or not currently used for drinking water
Neglecting to get this step performed correctly and well would mean that your plans to use leachate treatment in
constructed wetlands as a low cost and highly sustainable method of treating and disposing of a landfill site's
The 2nd step is to carry out the next site in the design of a leachate treatment in constructed wetlands, and apply
the permissible application contaminant load rates in terms of all the rate limiting parameters for the type of
constructed wetland and species proposed using loading rates provided by leachate treatment experts. Here you will
want to avoid over loading the natural capability wetland to take up the contaminants in the leachate, which in
time would cause a build up of pollution and leave a legacy of contaminated land for future generations to clean up
and likewise the local environmental regulator's job will be to assess the design loadings and only permit
scientifically demonstrably sustainable constructed wetland projects to go ahead.
The 3rd step is to complete the wetland design in outline using the wetland area calculated to be necessary at the
loading and predicted leachate flow, identify the necessary flat land area, and decide how any loss of leachate
into underlying strata can be avoided prior to the treated leachate effuent being discharged (usually at a single
discrete "discharge permit" location where it will be monitored for flow rate and water quality) into the
Be sure that enough land is available and a suitable discharge point. The land areas needed are large, and if raw
leachate concentrations are consistent with most sanitary landfills the ammonia (ammoniacal nitrogen) present will
be much too high to make a wetland treatment option viable without pre-treatment by biological
Nevertheless, expert design of a biological nitrication SBR leachate treatment plant as the primary treatment
method, combined with wetland treatment may be a very cost effective solution for leachate treatment at many
sanitary landfill sites. It is a method which has often been used especially in the United Kingdom and continues to
This can be important for the reason that not only will it be necessary for any leachate treatment in constructed
wetlands to be reliably treating all the leachate it receives at all times, but it must be monitored and shown to
the environmental regulator and any member of the public that the landfill is being operated in a manner which
protects the surrounding environment.
Be sure you steer clear of the mistake of selecting leachate treatment in constructed wetlands just because it is
cheap solution which will allow the landfill operator to forget the leachate once it is pumped into the constructed
Adhere to the above 3 steps carefully. In doing so you can expect to, most likely, be able to assess whether
leachate treatment in constructed wetlands would be suitable for your landfill leachate treatment without
difficulties. Just follow the steps, doing what you should do at the same time circumventing the problems pointed
out. The benefits and fruits from your effective endeavors to assess whether leachate treatment in constructed
wetlands would be suitable for your landfill leachate treatment, will then be yours to enjoy!
Read more on the subject of Constructed Wetlands for the Treatment of Landfill