Yes, landfill leachate ...

Yes, landfill leachate treatment with CWs is one the most desirable technologies providing on-site, passive treatment. As said by Dion, the major problem in this water is the extremely high concentrations of ammonia and organic nitrogen. A typical design includes a pre-treatment stage (sedimentation basin, aeration tanks, septic tanks, but in the past we also used a trickling filter). We have used Vertical flow CWs which are probably the most common type used for this treatment, while it can be combined with other CW types like HSF CW. Generally, an effective treatment of landfill leachate with CWs is quite feasible. Alexandros