STARx (Ex Situ) Reactor and ‘Hottpad’ Soil Pile Systems
STARx Treatment Systems for Contaminated Soils and Liquid Organic Wastes
Similar to in situ STAR, STARx is based on smoldering combustion where the contaminants/waste materials are the source of fuel. The process is self-sustaining following a short duration, low energy input ‘ignition event’, such that the energy of the reacting contaminants is used to pre-heat and initiate combustion of contaminants in the adjacent area, propagating a combustion front through the vessel, provided a sufficint flux of air is supplied.
The STARx process is carried out in fabricated vessels or in engineering soil piles depending on throughput requirements, available footprint, and treatment time requirements. These systems are ideal for stockpiles of contaminated soils, sites where surficial soils are contaminated, or for waste oils and sludges.
With waste oils and sludges, the STARx process includes the admixing of a porous matrix (e.g., coarse sand) to facilitate the self-sustained smoldering process. This is a necessary step to transform waste materials that will not burn on their own, to a mixture that will smolder in a self-sustaining (i.e., low energy) process. The STARx system is capable of destroying greater than 99.9% of contaminant/waste mass.
- STARx systems are capable of treating excavated soils and organic wastes such as waste oils and lagoon sludge safely, cost effectively, and rapidly.
- The system is ideally suited for applications related to the oil and gas and chemical manufacturing industries and for sites that produce a continuous/semi-continuous stream of liquid organic wastes.