The removal of disinfection by-product precursors by nanofiltration at Daytona Beach, Florida

Abstract

A low pressure membrane process, nanofiltration, was investigated for disinfection by-product (DBP) control and consistent water production for one year at Daytona Beach, Florida, a groundwater site. Eleven different operating conditions were implemented over the year of operation to investigate the effects of changing recovery and pressure gradient on mass transfer coefficients and water quality. Recoveries ranged from 70 to 90 percent and pressures from 110 to 170 pounds per square inch (psi). Over the year the membrane system operated 8578 hours while sustaining acceptable water production and DBP control. DBP concentrations in the system permeate averaged 16. 7 ug/L. Water mass transfer coefficient declined with time at the Daytona pilot plant. Linear regression of the water mass transfer coefficients with time showed three distinct divisions of stage and system water mass transfer coefficient decline. A theoretical homogeneous solution diffusion model was found to acceptably predict calcium and chloride concentrations in the permeate and not acceptably predict non-purgeable dissolved organic carbon concentrations in the permeate.

Notes

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Graduation Date

1991

Semester

Spring

Advisor

Taylor, James S.

Degree

Master of Science (M.S.)

College

College of Engineering

Department

Electrical Engineering

Format

PDF

Pages

155 p.

Language

English

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0029063

Subjects

Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic

Accessibility Status

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