Dear Ronei,

Physical treatment such as filtration systems (reverse osmosis or nanofiltration) or thermal evaporation systems can use biogas as a source of energy, but beware, these processes produce concentrates extremely expensive to manage and the return directly on the site of these, as was done and is still done sometimes, is extremely damaging in the long term, since these pollutants will quickly reform leachates. In most cases, the concentrate returns to the site ie to the landfill.

Regards

Bachir ACHOUR

Many thanks!

Concentrate recirculation in the landfill body is applied in some Italian municipalities such as “Pietramelina landfill” –Perugia, “il Fossetto landfill”- Pistoia, “Vizzolo Predabissi landfill”-Milano, and in Brazil, São Gonçalo Landfill - Rio de Janeiro, adopts the same practice. I would like to know, in fact, if there are other examples around the world or any specific legislation that deals with the subject in others countries...

MEE multple effect evaporation plant is the best solution followed with Centrifuge and ATFD.

Ajit Bhanu I think that MEE multiple effect evaporation and centrifugation may present satisfactory technical results in the treatment of the concentrate, but the costs of the process do not make its application unfeasible in some municipalities?

if you go Mechanical compressor based MEE then the cost is feasible and the final sludge can be utilized for boiler fuel.