Biological waste-water treatment of azo dyes

Technical Report · Sun May 01 00:00:00 EDT 1988

OSTI ID:6957664

Shaul, G M; Dempsey, C R; Dostal, K A

The U.S. Environmental Protection Agency's (EPA) Office of Toxic Substances evaluates existing chemicals under Section 4 of the Toxic Substances Control Act (TSCA) and Premanufacture Notification (PMN) submissions under Section 5 of TSCA. Azo dyes constitute a significant portion of these PMN submissions and specific azo dyes have recently been added to the priority list for considerations in the development of test rules under Section 4. Azo dyes are of concern because some of the dyes, dye precurors, and/or their degradation products such as aromatic amines (which are also dye precurors) have been shown to be, or are suspected to be, carcinogenic. The fate of azo dyes in biological waste-water treatment systems was studied to aid in the review of PMN submissions and to assist in the possible development of test rules. Results from extensive pilot-scale activated-sludge process testing for 18 azo dyes are presented. Results from fate studies of C.I. Disperse Blue 79 in aerobic and anaerobic waste-water treatment will also be presented.

• Research Organization: Environmental Protection Agency, Cincinnati, OH (USA). Water Engineering Research Lab.
• OSTI ID: 6957664
• Report Number(s): PB-88-213079/XAB; EPA-600/D-88/084
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ACTIVATED SLUDGE PROCESS
AZO DYES
WATER POLLUTION CONTROL
WASTE WATER
WATER TREATMENT PLANTS
BIODEGRADATION
CARCINOGENS
TOXIC SUBSTANCES CONTROL ACT
AZO COMPOUNDS
CHEMICAL REACTIONS
CONTROL
DECOMPOSITION
DYES
HYDROGEN COMPOUNDS
LAWS
LIQUID WASTES
MANAGEMENT
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION CONTROL
PROCESSING
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)