Document Type

Thesis - University Access Only

Award Date

2005

Degree Name

Master of Science (MS)

Department / School

Civil and Environmental Engineering

Abstract

Secondary standards indicate an acceptable turbidity level from municipal drinking water is below 5 NTU (Smith, 1998). Residents of the City of Brookings are receiving water with turbidity far below this level, but turbidity within the system has spiked on occasion in recent years. The City flushes the distribution system twice a year using conventional flushing procedures. Flushing has been performed in the overnight hours in the last several years to reduce customer exposure to turbidity spikes during the flushing program. The objective of this project was to develop a calibrated hydraulic model of the City's distribution system and use it to develop a unidirectional flushing program. An optimum flushing velocity of 5 fps was determined for the distribution system and procedures for developing a unidirectional flushing program were established from a literature review. This thesis study investigates the flushing techniques used by the City of Brookings and evaluates the effectiveness of their current flushing procedures. If the unidirectional flushing program developed in this thesis were implemented, the City could realize improved flushing effectiveness.

Library of Congress Subject Headings

Water-pipes -- Flushing -- South Dakota -- Brookings

Hydraulic models

Turbidity

Format

application/pdf

Number of Pages

163

Publisher

South Dakota State University

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