A treatment train is the combination of different treatment technologies. A system diagram of a common treatment train for halogenated SVOCs is illustrated below. Contaminated soil is excavated and transported to the treatment facility. A dehalogenation process is used to treat the contaminated soil first. In this process, soil is mixed with chemical reagents in a mixer and then passed through a reactor in which reactions between SVOCs and reagents take place. After dehalogenation, excess chemical reagents are separated from soil and recycled back to the mixer. Treated soil is finally cleaned by water in a soil washing process to remove contaminant residuals. Clean soil after dewatering is then ready for disposal.

Click on the different color areas to see detail profiles of the technologies involved.