Accuracy investigations of Parshall flumes and propeller meters

The City of Las Vegas Water Pollution Control Facility treats about 45 million gallons of municipal wastewater per day. Since effluent flow measurement commenced in 1991, measured outflow of water from the facility has often exceeded measured inflow, a physical impossibility. The discharged flow to Las Vegas Wash is reported to the State of Nevada Colorado River Commission, which controls the allocation of the river water. For this reason, accurate measurements of flow volumes are essential to earn return flow credits from Lake Mead; After reviewing existing plant flow data, nine experiments were conducted at the plant to determine which flow measurement devices might be suspected of not measuring flow correctly. Evaluations were made of influent flow accuracy at each of the four existing Parshall flumes. Tests were performed at effluent propeller meters to determine their accuracy. Hydraulic improvements are suggested for reduction of both flow disturbances and measurement errors.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Civil and Environmental Engineering

Grantor dc:publisher

University of Nevada, Las Vegas

Year

1994

Author dc:creator

• Rivera, Monica Gisela

Statement dc:rights

• IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

Language dc:language

English

Identifier

https://oasis.library.unlv.edu/rtds/364

OAI identifier oai:identifier

oai:oasis.library.unlv.edu:rtds-1363