IN-SITU REMEDIATION DEMONSTRATIONAL EXPERIMENT OF NITRATE CONTAMINATED GROUNDWATER USING BIODEGRADABLE PLASTICS

Abstract

The demonstration experiment of nitrate-contaminated groundwater in situ remediation was performed from 2000 January to 2003 March at Kakamihara-city. The permeable reactive barrier was constructed at the aquifer and observation wells were setted around the barrier. It was able to denitrify biologically by permeable reactive barrier containing biodegradable plastics and iron powder for reactants. The nitrate concentration of groundwater decreased after filtered out the barrier, and the performance of purification had been maintained for three years.