Determination/Validation of Technologies for Treatment/Recycle of Contaminated Sludges: Phase 1 - Site/Sludge Characterization and Laboratory Testing
Abstract
The Air Force Air Logistics Centers (AF-ALCs) generate large quanities of sludges from their industrial waste water treatment plants (IWTPs). While these sludges are not toxic based on toxicity characteristic leachant procedure (TCLP) values, these are still classified as "F-waste" (e.g., F002, F005, F006) since the waste waters originate in plating and other metal finishing operations. The objective of this project was to identify and evaluate technologies to minimize the volume of these sludges. This report covers the final three tasks in the first phase of a 2-phase project: (a) site selection (Task 1.3), (b)sludge characterization (Task 1.4) and (c) laboratory testing (Task 1.5). The IWTP metal hydroxide sludges were characterized as predominantly organic (oil/grease, waste activated sludge, and hydrocarbons) at OL-ALC, inorganic at WR-ALC, and oily at OO-ALC. The sludges from IWTPs at OC-ALC and WR-ALC are conditioned with inorganic additives to make them dewaterable and as such the additives (predominantly iron and calcium compounds) comprise more than 50 percent of the treated sludge solids. The composition and quantities of the various IWTP sludges impacted the selection of technologies to minimize sludge volume disposed. The laboratory tests focused on (a) replacement of inorganic additives with polymers to achieve satisfactory dewatering, (b)cost-effective methods for drying, (c) alternative methods for metals removal from IWTP influent to mininize metallic sludge formation, and (d) on methods to reduce volume of biosludge to be disposed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1998
- Accession Number
- ADA354644
Entities
People
- Bruce Monzyk
- Dale Folsom
- Nick Conkle
- Oron Schuss
- Robert Litt
Organizations
- Battelle Memorial Institute