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The REMERC™ Process

The REMERC™ process is an EPA accepted, low temperature, chemical extraction technique for recovering, mercury and other heavy metals from industrial wastes and contaminated soils.

Contaminated wastes are processed through a multiple-stage leach system. After each leach, the residue is simultaneously washed and thickened in a patented tray wash thickener. The mercury bearing solution flows to a reactor, which recovers triple distilled quality elemental mercury.

REMERC is operated commercially in both the batch and continuous modes. The process can reduce sludges containing in excess of 100,000 mg/kg mercury to the low mercury subcategory level <260 mg/kg total mercury and a TCLP mercury concentration lower than 0.025 mg/l.

REMERC offers several advantages over the alternative retort process:

  • Uses familiar chlor-alkali plant reagents and processing concepts
  • Low capital cost
  • Minimum manpower
  • No atmospheric emissions
  • Produces high-purity, directly reusable mercury

REMERC is a flexible process that can be applied to soil remediation, decontamination of equipment and building materials or treatment of mercury contaminated metallurgical sludges and mixed organo-mercury contaminated wastes.

Related Literature  

Articles/Papers

  • The Recovery and Recycle of Mercury from Chlor-Alkali Plant Wastewater Sludge  (HTML)  (PDF)
  • The "REMERC" Process for Treatment of K106 Mercury Mud  (PDF)

Sample Projects

  • Pioneer Chlor Alkali Company Inc., St. Gabriel, LA

    Engineering, design, procurement and construction of a REMERC facility at this plant in St. Gabriel, Louisiana. Mercury contaminated wastes (K106) generated by the removal of mercury from the plant's wastewater and brine sludge are processed by the REMERC system, producing a low mercury, solid waste.

  • Westlake CA & O Corporation, Calvert City, KY

    Universal Dynamics provided process design, equipment specifications, control logic, operating procedures and startup assistance. This allowed BF Goodrich to retrofit their existing mud treatment system. BF Goodrich operates a batch system.