Masters Theses

Ajab S. Malik

Abstract

"This investigation was conducted to determine the feasibility of using a continuous foam flotation process for the removal of soluble organic materials from sewage treatment plant effluents. All effluents contained alkyl benzene sulfonates (ABS), derived from synthetic detergents. The studies were conducted on a laboratory scale. The reduction in the chemical oxygen demand was used as a measure of the effectiveness of the removal of the organic materials. In addition, ABS determinations were employed to study the fate of the detergent.

A flotation cell, equipped with the means of controlling the air and liquid flow rates, was used. Air flow rates ranging from zero to 27.95 cubic feet per hour were employed and a liquid flow rate of 200 milliliters per minute was used throughout the investigation. Samples of the defoamed liquid (foamate) were analyzed for ABS content and chemical oxygen demand, using the methylene blue method and a modified dichromate procedure, respectively.

It was found that initial COD values of 41 to 71. 0 mg/1 were reduced to 23 to 36 mg/1 with a corresponding average reduction of 40 to 50 per cent. The ABS, which accounts for only a part of the COD, was reduced from an initial concentration of 5 to 6.5 mg/1 to a final value of 0.9 to 1.5 mg/1, giving a removal of 80 to 90 per cent. The results obtained agreed substantially with the data iii reported by other investigators using a similar flotation process"--Abstract pp. ii-iii

Advisor(s)

Conrad, Frank H., 1902-1983

Committee Member(s)

Grigoropoulos, Sotirios G.
Lloyd, Samuel Horace Jr.
Strunk, Mailand R., 1919-2008

Department(s)

Chemical and Biochemical Engineering

Degree Name

M.S. in Chemical Engineering

Publisher

University of Missouri at Rolla

Publication Date

1964

Pagination

viii, 85 pages

Note about bibliography

Includes bibliographical references (pages 79-83)

Rights

© 1964 Ajab S. Malik, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 1563

Print OCLC #

5955381

Download

Share

 
COinS