Accession Number:

AD0760056

Title:

Electrochemical Flotation Concept for Removing Oil from Water.

Descriptive Note:

Final rept. May 72-Jan 73,

Corporate Author:

LOCKHEED AIRCRAFT SERVICE CO ONTARIO CALIF

Personal Author(s):

• McKenna,Quentin H.
• Helber,Herman H.
• Carrell,Linda M.
• Tobias,Robert F.

Report Date:

1973-01-01

Pagination or Media Count:

131.0

Abstract:

A study was undertaken to determine the feasibility of an electrochemical flotation system for separating oil from bilge water. This system involves flotation, using electrolytically-produced micro-gas bubbles, subsequent to coagulation andor adsorption of oily impurities in the water. Initial electroflotation tests were conducted in batch modules to determine the chemical treatment necessary to achieve the desired separation of the entire spectrum of oil-brackish water combinations. Addition of NaOH to adjust the pH to approximately 10 along with 10-15 ppm of anionic polyelectrolyte was the only pretreatment necessary for all oily waters tested. Pilot plant data was used to estimate the costs of systems with capacities of 30, 100 and 1000 gpm. Modified author abstract

Descriptors:

• *WATER POLLUTION
• *SHIP AUXILIARY EQUIPMENT
• *FLOTATION
• *ELECTROLYSIS
• MATERIAL SEPARATION
• OILS
• MATERIAL SEPARATION
• SURFACE PROPERTIES
• ELECTRODES
• COLLOIDS
• PERFORMANCE(ENGINEERING)
• SHIPBOARD
• PH FACTOR
• PILOT PLANTS
• TEMPERATURE

Subject Categories:

• Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE