Sludge stabilization reduces the mobility of hazardous substances and contaminates in the environment through both physical and chemical means. Instead of removing the contaminated material and amassing the removal and backfill costs, stabilization traps or immobilizes contaminants within the contaminated soil or sludge using a special blend of reagents. Stabilized products will not revert back to their pre-stabilized conditions. To ensure that contaminants do not leach through the contaminated materials, leachability testing is typically performed.

In addition to remediating contaminated soil and sludge, RECON’s sludge stabilization techniques can improve the bearing capacity of the soil or sludge to allow foundation construction at locations otherwise thought unusable. We have also been able to take unusable land and make it suitable for storm water impoundments, parking lots, and temporary access roads in order to provide support before, during, and after our client’s large remedial projects. Our employees also have hands-on experience with dozens of different proven mixes and reagents, including our own patented reagent blend, low solids stabilization (LSS®).

In addition to our patented low solids stabilization blend, we also use fly ash, bed ash, cement kiln dust (CKD), lime kiln dust (LKD), Portland cement, blast furnace slag, bentonite, GAC, and attapulgite as reagents.

Sludge stabilization requires using proper mixing tools to cause the reagent and the matrix requiring stabilization to come in contact. RECON uses the following equipment to create these contact reactions:

  • Vertical Auger Mixer
  • Multi-Auger mixer (also used for deep soil mixing)
  • Bucket mixing
  • Pug Mills
  • Pulva-Mixer
  • Allu-Mixer