ABSTRACT
This chapter describes engineering design aspects of the type of phytoremediation system used in the Craney Island field test. It discusses additional full-scale design considerations. Supplemental treatment systems included mixing, screening, and shredding of the soil prior to placement. The subsequent phytoremediation used nutrient additions to maintain plant and microbial growth. The chapter provides a process flow schematic and conceptual mass balance. The primary concerns of a mass balance on phytoremediation system are in regard to possible contaminant losses from the system, which could impact potential receptors, and to document fate of petroleum hydrocarbons in the system. A potentially important remedial effect which is not revealed by the mass balance is degree to which the hydrocarbon contaminants may have become more tightly bound within the soil matrix, and therefore less available to potential receptors, as result of the phytoremediation process. However, it is important to avoid excess compaction of soils by avoiding heavy equipment travel on the placed soil.
