Bioremediation of 1,2-dichloroethane with INTEROX® case study

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At a chemica plant in a harbour area, the surface aquifer was contaminated with 1,2-dichoroethane (1,2-DCEa) which had to be remediated.

Site characterisation, and laboratory tests demonstrated that oxygen was the limiting factor for the insitu biodegradation of 1,2-DCEa.

The remedial strategy was based on flushing with simuftaneous aerobic biodegradation enhancement. Biodegradation was stimuated by injecting water with a diluted hydrogen peroxide soution (50 — SOOppm) as an oxygen source, and nutrients (N, P). Full scale operation enabled the remedial objective to be reached within 3 years.

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