Methylene Chloride

Biological Treatment Summary

The Situation

A company reconditioning aircraft engines had a problem with the discharge of a methylene chloride contaminated waste stream. The methylene chloride concentrations were 1,500 ppm with a pH of 8.3.

The Solution

United-Tech proposed a treatment program that consisted of the addition of OBT®. It was proposed that a seed application be performed followed by regular maintenance applications. The treatment program was designed to decrease the methylene chloride concentrations.

The Results

After seven (7) days of the treatment program, samples were taken and the methylene chloride level was reduced to .02 ppm. Almost a total break-down had taken place.