Accession Number:

ADA265710

Title:

Substitution of Wax and Grease Cleaners With Biodegradable Solvents: Phase 1. Part 5

Descriptive Note:

Final rept. Oct 1987-Sep 1988

Corporate Author:

EG AND G IDAHO INC IDAHO FALLS

Report Date:

1989-09-01

Pagination or Media Count:

112.0

Abstract:

Methods have been tested for systematic evaluations of biodegradable solvents for aircraft parts cleaning, degreasing, and masking-wax removal processes. Screening tests have identified solvents that are biodegradable can efficiently remove soils from aircraft parts in a dip tank, and meet the military specification requirement for corrosiveness ANSIASTM in processes used at the five Air Force Air Logistics Centers ALCs. The database developed during Phase I, of this program identifies each process, the chemicals used, tank volumes, testing requirements, and alternative chemicals To test solvent biodegrability, an ASTM method was modified and used to test bench-scale activated sludge system by measuring chemical oxygen demand COD and adenosine triphosphate ATP over a 6-hour period to determine if the bacteria will reduce COD to below the limit established by the National Pollution Discharge Elimination System NPDES. Solvents were categorized to identify any trends, and six were selected for in-depth pilot-scale testing.... Solvents, Cleaners, Halogenated, Hydrocarbon, Biodegradable, Industrial wastewater, Hazardous Waste minimization.

Subject Categories:

  • Solvents, Cleaners and Abrasives
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE