Masters Theses

Abstract

"The purpose of this investigation was to evaluate the effectiveness of GAC* filtration in removing organic chemical contaminants from drinking water, and to determine whether the T.O. No. of the treated water could aid in the routine monitoring of the GAC filters.

Two pilot filters containing 18-in. (45.7-cm) deep GAC beds were installed at water treatment plants in Jefferson City and St. Louis County, MO; both plants treated Missouri River water. A bituminous coal-base (large surface area, small pore volume) and 2 lignite coal-base (small surface area, large pore volume) carbons were tested at 2 and 5 gpm/sq ft (81.4 and 204 1/min/sq m) over a 6-month period. The organic content of the water was monitored using the 0-CA and SEM techniques, T.O. No., fluorescence, UV absorbance, and trihalomethane determinations. A questionnaire survey of treatment plants employing GAC filtration was also conducted to supplement the experimental findings.

The GAC filters removed 25 to 100 percent of the influent trace organics (measured in terms of CCE and SCE) before reaching exhaustion in 15 to 30 days; however, the removal of trihalomethanes continued for periods in excess of 48 days. The actual time to exhaustion depended on the carbon surface area and filtration rate through the bed, while the removal efficiency depended on the carbon pore volume and bed contact time. The T.O. No. was found to be an inadequate monitor of bed performance, and little correlation could be found between the findings by spectrophotometric and extraction techniques"--Abstract, p. ii

*Standard abbreviations used are listed in Appendix A.

Advisor(s)

Grigoropoulos, Sotirios G.

Committee Member(s)

Modesitt, Donald E.
Siehr, Donald J.

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Publisher

University of Missouri--Rolla

Publication Date

1977

Pagination

vii, 92 pages

Note about bibliography

Includes bibliographical references (pages 85-90)

Rights

© 1977 Garry Reinhold Aronberg, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 4306

Print OCLC #

5999598

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