Biodegradability Investigation of a Nonphenolic Aircraft Paint Stripper
Abstract
Paint stripping of aircraft and ground equipment is conducted periodically for the prevention of intergranular corrosion of the metallic surfaces. Wastewater occurs when the viscous paint stripper is rinsed from the aircraft or ground equipment surface with a high-pressure water system. The necessity and cost of on-site treatment of phenolic aircraft paint stripping wastewater have generated an urgent need to develop a nonphenolic paint stripper that is effective for removing polyurethane and epoxy paint. A nonphenolic paint stripper (for example, Turco 5873) is effective in removing at least some polyurethane and epoxy paints. Thus, a study was made by the Air Force Weapons Laboratory (AFWL) to determine if existing biological treatment processes were effective in treating the resulting nonphenolic paint stripping wastewater. The results of laboratory-scale investigations indicate that biological treatment processes are satisfactory if (1) the methylene chloride concentration is previously reduced and, (2) the chemical oxygen demand contribution from the paint stripper does not exceed 200 mg/l.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1974
- Accession Number
- AD0779752
Entities
People
- Richard L. Jambor
- Ronald H. Kroop
Organizations
- Air Force Research Laboratory