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Current
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Research
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Semester
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Goals:
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1.
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Determine
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a
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suitable
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experimental
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setup
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that
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will
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log
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the
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change
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in
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pressure
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over
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time
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in
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order
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to
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calculate
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flow
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rate
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through
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the
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clay
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pot.
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2.
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Determine
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a
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range
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of
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influent
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water
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turbidities
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the
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clay
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pot
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can
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remove
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for
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<5
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NTU
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3.
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Determine
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if
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the
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rate
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of
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water
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flow
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through
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the
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pot
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decreases
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with
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successive
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experiments
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or
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influent
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turbidities
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4.
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Determine
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if
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the
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treatment
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of
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a
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lower
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influent
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turbidity
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water
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is
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compromised
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because
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a
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higher
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influent
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turbidity
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water
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was
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treated before
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before {composition-setup} cloak.toggle.exclusive=false {composition-setup} h3. |
Experimental
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Setup
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The
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clay
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pot
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is
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placed
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inside
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a
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larger
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bucket
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(approximate
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volume=12L),
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so
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that
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the
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pot
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rim
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is
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positioned
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perfectly
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on
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the
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rim
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of
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the
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bucket.
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The
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large
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bucket
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has
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a
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hole
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at
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the
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bottom
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and
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a
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tube
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is
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connected
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to
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a
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pressure
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sensor.
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The
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tube
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has
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a
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closed
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valve
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at
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the
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end
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to
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make
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sure
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no
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water
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empties
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through
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the
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tube
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until
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the
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user
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manually
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changes
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the
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valve
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position.
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One
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liter
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of
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water
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is
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poured
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into
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the
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large
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bucket
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as
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a
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starting
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water
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level
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(or
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zero
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pressure)
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before
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any
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experiment.
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In
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Process
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Controller,
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the
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sensor
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should
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be
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zeroed
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at
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the
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start
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of
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the
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experiment.
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At
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the
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start
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of
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the
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experiment,
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the
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Process
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Controller
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state
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should
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be
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changed
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to
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Data
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Collection,
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where
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data
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is
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collected
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every
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second.
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We
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will
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use
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7
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L
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as
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the
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limit
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of
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the
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clay
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pot
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volume,
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so
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each
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experiment
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should
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use
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7
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L
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of
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influent
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solution.
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The
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pressure
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sensor
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will
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record
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the
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change
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in
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pressure
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(or
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water
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height)
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in
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the
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large
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bucket
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over
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time.
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This
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data
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will
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be
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used
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to
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calculate
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the
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flow
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rate
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of
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water
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through
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the
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clay
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pot
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using
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MathCAD
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data
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collection
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and
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analysis
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tools.
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Experiment
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{toggle-cloak:id=Background flow rate} |
...
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flow rate
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rate {cloak:id=Background flow rate} |
Determine
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the
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clay
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pots
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initial
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flow
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rate
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(background
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flow
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rate)
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with
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clean
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water
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1.
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In
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Process
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Controller,
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use
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a
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new
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"Current
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Folder"
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for
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the
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collected
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data
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to
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be
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saved
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to
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with
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the
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day's
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date.
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Save
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the
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Process
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Controller
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method
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under
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a
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different
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experiment
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name
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if
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anything
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in
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the
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program
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is
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changed.
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2.
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Empty
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the
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large
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bucket
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with
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any
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excess
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water.
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3.
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Pour
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1
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L
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of
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water
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into
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the
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large
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bucket
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as
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a
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background
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level.
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4.
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In
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Process
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Controller,
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zero
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the
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pressure
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sensor
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in
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the
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"Volts"
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section.
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5.
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Pour
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7
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L
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of
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tap
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water
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into
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the
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clay
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pot
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and
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place
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the
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white
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lid
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over
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the
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pot
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to
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reduce
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contamination.
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6.
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After
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the
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pot
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is
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emptied,
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analyze
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the
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pressure
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data.
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{cloak} h5. |
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{toggle-cloak:id=Cleaning Directions} |
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Directions {cloak:id=Cleaning Directions} |
Determine
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if
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the
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Manufacturer's
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cleaning
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directions
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are
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accurate
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1.
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Mix
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a
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clay
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solution
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of
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100
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NTU
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2.
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Allow
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the
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solution
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to
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run
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through
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the
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pot
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3.
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Repeat
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steps
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1-2
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several
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times
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to
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build
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a
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nice
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coating
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of
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clay
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on
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the
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inside
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4.
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Clean
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the
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pot
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according
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to
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the
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directions
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provided
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by
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the
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manufacturer
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5.
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Allow
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a
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ithaca
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tap
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water
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solution
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to
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run
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through
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the
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pot
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6.
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Measure
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the
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effluent
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turbidity
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at
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15
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minute
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increments
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for
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one
...
hour.
| Wiki Markup |
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{cloak} h5. |
| Wiki Markup |
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{toggle-cloak:id=Turbidity Removal} |
...
| Wiki Markup |
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Removal {cloak:id=Turbidity Removal} |
Determine
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the
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range
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of
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influent
...
water
...
turbidities
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the
...
clay
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pot
...
can
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remove
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1.
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Mix
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a
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clay
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solution
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of
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10
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NTU
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2.
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Allow
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the
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solution
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to
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run
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through
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the
...
pot
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3.
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Measure
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the
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volume
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of
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water
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that
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seeps
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out
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in
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the
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first
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15
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minutes,
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30
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minutes,
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1
...
hour,
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and
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hour
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increments
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until
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the
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pot
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is
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empty
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4.
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Measure
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the
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Turbidity
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of
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the
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effluent
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water
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at
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each
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of
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these
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time
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intervals
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5.
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Clean
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the
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pot
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according
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to
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the
...
directions
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provided
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by
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the
...
manufacturer
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6.
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Repeate
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1-5
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for
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influent
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turbidities
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of
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25
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NTU,
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50
...
NTU,
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75
...
NTU,
...
100
...
NTU,
...
125
...
NTU
| Wiki Markup |
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{cloak} |
| Wiki Markup |
|---|
{toggle-cloak:id=Changes in Flow Rate} |
...
...
in
...
Flow Rate
| Wiki Markup |
|---|
Rate {cloak:id=Changes in Flow Rate} |
Flow
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rate
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or
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Effluent
...
Turbidity
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changes
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over
...
time
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due
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to
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continuous
...
use
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of
...
high
...
turbidity
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1.
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Mix
...
a
...
clay
...
solution
...
of
...
100
...
NTU
...
2.
...
Allow
...
the
...
solution
...
to
...
run
...
through
...
the
...
pot
...
3.
...
Measure
...
the
...
volume
...
of
...
the
...
water
...
that
...
seeps
...
out
...
in
...
the
...
first
...
15
...
minutes,
...
30
...
minutes,
...
1
...
hour,
...
and
...
hour
...
increments
...
until
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the
...
pot
...
is
...
empty
...
4.
...
Measure
...
the
...
turbidity
...
of
...
the
...
effluent
...
water
...
at
...
the
...
same
...
time
...
intervals
...
as
...
step
...
3
...
5.
...
Repeat
...
steps
...
1-4
...
several times
| Wiki Markup |
|---|
times
{cloak} |