Sedimentation Prototype Final Report

Introduction

Methods

Schematic

Initial Apparatus Setup

The initial apparatus set up was run by Process Controller which had functions set in place for when the system would turn on, off, or drain. It also included a pressure sensor that would control the flow rate of the system. It was found that the pressure sensor was unreliable and sensitive to changes in the environment. Additionally, the flocculator for this setup led to a high velocity gradient (G) of 129.1/s. This led to the formation of very small flocs.

New Apparatus Setup

In the New Apparatus Setup the diameter of the flocculator was increased. This allowed for an increase in floc size and a significantly lower velocity gradient (G) of 35.7/s. Additionally, the flow control system was changed to utilize a perisaltic pump allowing for a more stable system.

Design Parameters

Equations

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L/D

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V_c

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Straw Bundles

Results & Discussion

Matrix of Experiments

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Experiment Obstacles

Experimental Trials

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Conclusions