Methane Stripping Trials
When Steve Last started designing these plants he carried out a variety of trials at different landfills. The data from these trials has formed the basis for process designs for this type of plant ever since. However, on occasions we do still encounter unusual sites, and for these sites a trial is still undertaken before commencing the detailed process design.
On this page we discuss the trials carried out previously.
Methane Stripping Site Trials
Methane removal rates of up to 99.4% were achieved reliably during the trials discussed below. It was noted that allowing effluents from the final tank to stand for a further 10 minutes, resulted in the reduction of dissolved methane concentrations, as very small entrained bubbles were lost from the liquid surface.
The aeration and methane stripping process had no significant effect on any major chemical characteristics of the leachate, although the precipitation of small amounts of a ‘hardness’ scale on the inside of each reactor was evident, and must be taken into account within a full-scale design. This scaling did not result in significant reductions in the concentrations of the ions of calcium, magnesium or iron.
No significant reduction in ammoniacal-nitrogen concentration took place.
Full Scale Methane Stripping Plants Completed
Results from the trials have formed a reliable basis to design a number of full-scale treatment plants. Steve Last of IPPTS Associates has completed 11 such designs since 1999 which have been commissioned, and all but one or two are still in operation (as of January 2011).
IPPTS Associates is a UK based environmental consultancy.
We would like to help you with your methane problem.
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Click here to view our associated leachate management web site.