Treatment and Disposal

Chemical Treatment

Heritage owns and operates a full-service TSDF in Indianapolis, IN.

With the strict regulations concerning the disposal of chemical waste, Heritage has earned a reputation for providing quality services that ensure compliance.

Aqueous Treatment for Heavy Metal Bearing Wastewaters/Sludges

Heritage is one of the leaders in wastewater treatment services for a wide range of industrial by-products. Materials undergo a series of physical and chemical processes to treat for primary contaminants, followed by heavy metals precipitation and pH adjustment. Wastes managed through our integrated treatment systems include: Acids (including Nitric and Hydrofluoric), Caustics, and Inorganic Sludges and Wastewaters.

Along with the wastestreams and processes listed above, Heritage also treats and manages inorganic materials that contain cyanides, hexavalent chrome, heavy metals, and other difficult-to-treat contaminants. All solids generated from this treatment method are stabilized and shipped to the Heritage-owned landfills.

Cyanide Destruction

Heritage's proprietary cyanide treatment process treats all concentrations of complex and free cyanides to non-detectable levels. Typical wastestreams, such as solids and sludges, are first processed for size reduction and placed in sludge slurry for better handling. Following the cyanide destruction step, material is physically and chemically treated to ensure the waste meets stringent EPA standards for final disposal. Treatment residues are stabilized and deposited in Heritage's PART B permitted RCRA Landfill, and non-processable solids and  debris are packaged and sent to our incinerator.

Stabilization of Heavy Metal Bearing Solids/Sludges

Wastewater treatment residues (i.e. filtercake), contaminated soils, air pollution control residues and other industrial hazardous waste solids/sludges are received in the Contaminant Buildings for stabilization of heavy metal contaminants to meet Land Disposal Restrictions prior to landfilling. Chemical reagents are added to the waste to bind the contaminants within the waste matrix, preventing them from leaching into the environment. This process also includes the treatment of debris for microencapsulation or miacroencapsulation (Heritage proprietary method), depending on the size and contamination of debris.