Jet Injection Model Studies for the City of Los Angeles

by Walter R. Naydo, City of Los Angeles Bur of, Engineering, United States,
Anthony Bouchard, City of Los Angeles Bur of, Engineering, United States,
Jeffrey C. Smith, City of Los Angeles Bur of, Engineering, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract: The Hypersion Treatment Plant for the City of Los Angeles is currently undergoing an expansion project. A major component of this system is a sludge recycling system. And it is essential that a homogeneous mix of the return sludge and influent wastewater be achieved. It was necessary to design an injection system that provided adequate mixing while minimizing head loss. The injection system was designed based on a mathematical model which quantified velocity gradients under all flow conditions in the mixing zone. After the prototype had been conceptually designed, a model was constructed and is being tested. This paper describes the mathematical model and the physical model, and discusses some initial findings and the continuation of testing.

Subject Headings: Model analysis | Mathematical models | Physical models | Model tests | Hydraulic models | Urban areas | Sludge | Fluid velocity | Mathematics | California | North America | Los Angeles | United States

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