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\begin_body

\begin_layout Title
Turbulent Tube and Fluidized Bed Flocculator
\end_layout

\begin_layout Author
Felice Chan, Jon Christensen, Stephen Jacobs, Ana Oliveira
\end_layout

\begin_layout Date
January 30, 2014
\end_layout

\begin_layout Standard
By February 7
\end_layout

\begin_layout Itemize
Fixing Lab-Scale Flocculator:
\end_layout

\begin_deeper
\begin_layout Itemize
Use zip ties to minimize unintended bends in the tubing between constrictions
\end_layout

\begin_layout Itemize
Unclamp the constrictions of the flocculator, fill it up with water, and
 reclamp the restrictions to attempt to minimize the air bubbles.
\end_layout

\begin_layout Itemize
First research feasibility of exercise semisphere to get rid of bubbles
 and talk to machine shop to determine whether there is a cheaper alternative.
 If both fail, test attaching chains to the flocculator and the ceiling
 to spin the flocculator to release the air bubbles.
\end_layout

\begin_layout Itemize
Vaccum seal the ends of the tubing and then fill it with water to potentially
 eliminate air bubbles.
\end_layout

\end_deeper
\begin_layout Standard
By February 14
\end_layout

\begin_layout Itemize
Process Controller:
\end_layout

\begin_deeper
\begin_layout Itemize
Set up and calibrate solenoid valves and turbidimeters
\end_layout

\begin_layout Itemize
Program the system so it can work autonomously and collect organized data
\end_layout

\begin_layout Itemize
Test each component of the flocculator system to insure that all of the
 components are in order.
\end_layout

\end_deeper
\begin_layout Standard
By February 21
\end_layout

\begin_layout Itemize
Rapid mix and coagulant stock:
\end_layout

\begin_deeper
\begin_layout Itemize
Set up coagulant stock system with mixer and dosing.
 
\end_layout

\begin_layout Itemize
Determine how to best connect needle to coagulant stock source and connect
 it to the coagulant pump.
\end_layout

\end_deeper
\begin_layout Standard
By February 28:
\end_layout

\begin_layout Itemize
Construct SWaT:
\end_layout

\begin_deeper
\begin_layout Itemize
Work with laminar tube floc team to create the initial SWaT system.
\end_layout

\begin_layout Itemize
Incorporate a tube settler so that different sizes of floc can be analyzed
 to test floc breakup theory.
\end_layout

\begin_layout Itemize
Set up turbidimeter to test effluent turbidity at the end of the floculator
\end_layout

\begin_layout Itemize
Air tee at the top of the flocculator
\end_layout

\begin_layout Itemize
Set up flow measurement system, potentially using pressure sensors
\end_layout

\end_deeper
\begin_layout Itemize
Run Experiments with Turbulent Flocculator
\end_layout

\begin_deeper
\begin_layout Itemize
After process controller, coagulant stock, clay stock, the turbidimeters
 and pumps are set up talk to floc imaging team to see if it can be incorporated
 into our system.
\end_layout

\begin_layout Itemize
Run experiments to test measure effluent turbidity.
\end_layout

\begin_layout Itemize
Graph pC*.
\end_layout

\begin_layout Itemize
Assess effect of air bubbles by measuring effluent turbidity of different
 amount of air within the flocculator.
\end_layout

\end_deeper
\begin_layout Standard
By March 15:
\end_layout

\begin_layout Itemize
Design Fluidized Bed Flocculator:
\end_layout

\begin_deeper
\begin_layout Itemize
Design and determine necessary materials through discussing with the laminar
 tube flocculator team
\end_layout

\begin_layout Itemize
Discuss the best grain size with Fall 2013's sand sourcing team.
 The sand could be 500 
\begin_inset Formula $\mu m$
\end_inset

 in diameter or smaller.
 
\end_layout

\begin_layout Itemize
Influent turbidity is 100 NTU and the coagulant dose is 5 mg/L PACl.
 
\end_layout

\end_deeper
\begin_layout Standard
By April 18:
\end_layout

\begin_layout Itemize
Construct Fluidized Bed Flocculator
\end_layout

\begin_deeper
\begin_layout Itemize
Use a 1 inch diameter PVC column with 1 m of sand fluidized to 1.3 m with
 an upflow velocity of 11 mm/s.
 
\end_layout

\begin_layout Itemize
Determine parameters like the energy dissipation rate (energy loss through
 the fluidized bed divided by residence time).
 
\end_layout

\end_deeper
\begin_layout Standard
By May 2: 
\end_layout

\begin_layout Itemize
Test Fluidized Bed Flocculator
\end_layout

\begin_deeper
\begin_layout Itemize
Compare the flocculation effect of the fluidized bed with a control with
 the same residence time but without any sand to see if the sand has a significa
nt impact on the aggregation process.
\end_layout

\begin_layout Itemize
Perhaps run experiments using a tube flocculator with the same head loss
 and the same residence time to determine whether the sand is benificial.
\end_layout

\end_deeper
\end_body
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