Leachate removal

Curage et déshydratation des lixiviats de décharge

In many cases, leachate storage ponds silt up regularly. Find out how SEDE can help.


According to the Prefectoral Order applicable to the site, the sludge can only be returned to the discharge cells if the dryness is higher than 30% DM, with good heap holding.

A curing of the sludge from the basins, followed by dewatering of the pumped products must therefore be carried out to reach the desired dryness.



Basin curing

Depending on the case, SEDE proposes adapted curing means, minimising the presence of its staff in the basins.

Sludge dewatering

The pumped sludge is then dewatered using a mobile filter press or centrifuge.


Limiting station

Depending on the case, the liquid sludge is conditioned with polymer, lime and ferric chloride.

Odour problem ?

To remedy the problem of odour nuisance, particularly in leachate basins, Klearios, a subsidiary of SEDE, offers "dry steam" deodorisation technologies.


SEDE's integrated solutions

Conditioning and treatment guaranteeing final dryness and clear filtrates, in a regular way.

  • Dewatered, structured sludge that holds in heaps.
  • Risk control (little human presence in the basins).
  • Reduced volume of sludge to be stored.
  • A very broad know-how which also concerns the pre-treatment of leachates with decarbonation.