Linear Chemical Doser
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h1. +Linear+ Chemical Doser
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[!Laboratory Research Set-ups^ACDF08 Labeled Context View.jpg|width=250px!|Laboratory Research Set-ups]
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This
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research
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is
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focused
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on
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designing
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a
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linear
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automated
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chemical
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doser
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that
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can
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automatically
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adjust
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the
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head
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loss
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in
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the
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chemical
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dosing
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system
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in
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response
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to
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plant
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inflow
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changes.
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Currently
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plant
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chemical
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dosing
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is
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determined
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based
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on
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plant
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inflow
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and
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turbidity.
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The
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chemical
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doser
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(CD)
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will
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eliminate
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the
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need
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for
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plant
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operators
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to
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dose
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for
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inflow,
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reducing
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the
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number
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of
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variables
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and
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therefore
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opportunities
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for
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error.
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One
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main
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reason
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for
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the
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focus
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on
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this
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doser
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is
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that
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it
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will
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allow
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the
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AguaClara
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plants
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to
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be
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more
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flexible.
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Plant
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inflow
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is
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largely
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variable
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with
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weather,
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both
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seasonally
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and
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hourly.
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In
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Honduras
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particularly
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there
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is
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a
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high
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frequency
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of
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late
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night
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rain
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storms,
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which
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appreciably
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increase
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plant
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inflow.
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Ideally
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the
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automated
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chemical
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dosing
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system
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will
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allow
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plants
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to
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respond
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to
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these
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weather-driven
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changes
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without
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an
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operator's
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presence.
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...
...
Linear Chemical Doser Research: Methods and Results
Fall 2008
- Data from all three experimental runs in Fall 2008 analyzed together
Lever arm height versus chem dosing
- The robust chemical doser from Fall 2008 was tested by fixing the lever arm height at multiple heights while measuring flow controller outflow at different locations along the lever arm (similar to float height vs. chem dosing experiment)
Float height versus chem dosing at multiple lever arm locations
- The chemical doser apparatus and prototype from Fall 2008 were tested by increasing the float height while measuring flow controller outflow at different locations along the lever arm
Additional Information
- Includes apparatus design and chronological modifications to the experimental set-up
Setting up and calibrating a CD
- Includes specific instructions for setting up and calibrating a CD
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