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Turbulent Tube Floc and Fluidized Bed Flocculator

Though full scale water treatment plants operate with turbulent flocculation, previous flocculation research has been conducted using a laminar flow tube flocculator. Our goal is to design create and test a turbulent tube flocculator for lab scale research to better mimic the processes that occur at full scale plants. With this information, we can hopefully better understand the process of flocculation and make design improvements to improve flocculator performance. 

Furthermore, for the Spring 2014 semester, the team aims to evaluate the possibility of using a fluidized bed of sand as a flocculator to accelerate the flocculation process.

Current Research

The Summer 2013 team developed an optimal design for the flocculator. The basic design is to have a stacked vertical coil of tubes and to use metal bars and PVC to clamp the tubing to create flow expansions which will create turbulence.  

Parameter

Value

Energy Dissipation Rate

30 mW/kg

Collision Potential

100 m^2/3

Reynolds Number

4000

Hydraulic Residence Time

7.5 min

Inner Diameter of Tubing

3.18 cm

Length of Flocculator

56.35 m

Number of Coils

30

Diameter of Coil

0.614 m

Unconstricted Height

1.125 m

Constricted Height

1.464 m

The team will perform experiments controlling temperature, pressure, influent turbidity and measure effluent turbidity, floc size distribtuion and pC*.

Members

 Felice Chan
MingZe Niu
William Pennock

Documents

 

Challenges

Tasks

Symposium

Final Presentation

Final Report

Summer '14

 

 

 

 

 

Spring '14

Fall '13

Summer '13

 
 
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