Enviropacific have access to both indirect thermal desorption (ITD) and direct thermal desorption (DTD) technologies. These are proven and reliable technologies in removing organic compounds to remediate contaminated soils and wastes and produce treated materials suitable for beneficial land use.
Our plant capabilities are presented with our DTD systems, we own and operate three plant types: our ‘baby’ mobile plant and our 15-30 tonnes per hour higher capacity co-current and counter-current plants.
ITD technology is generally used to treat wastes with significant contaminant concentration (>5% w/w) as the indirect heat transfer mechanism allows contaminants to thermally desorb from the solid matrices in the absence of a naked flame and low oxygen environment. Whereas DTD typically destroys volatilised contaminants in the thermal oxidiser chamber, ITD offers the option of intercepting and recovering contaminants from the gas stream by condensation. Hence the ITD technology is also suitable for the treatment and recovery of contaminants including mercury.
All our plants are equipped with programmable logic controllers (PLCs) and continuous emissions monitoring systems (CEMS) that provide continuous monitoring and control of plant operation to ensure the treatment of soil and gases are conducted safely and are kept optimised at all times.
Safe plant operation and control is accomplished via a programmable logic controller (PLC) as well as hardwired interlocks. Process information such as gas and soil temperatures, equipment health, vessel pressures, flows and levels are continuously monitored and recorded by the PLC computer for review and reporting purposes. A continuous emissions monitoring system (CEMS) installed on the acid gas scrubber stack offers continuous monitoring of the off-gases for CO, NOx, SOx and O2.