Challenges Fall 2009
Design
Challenges for Fall 2009
Subteam Leader:
Number of team members needed: 9-10
Important team member skills:
- CEE 3310, or equivalent Fluid Dynamics course
- CEE 4540 co-requisite
- Students must be comfortable with coding
- Students should be familiar with the AguaClara design
- AutoCAD and/or MathCAD knowledge is a plus
- We are willing to train new members
Challenges
Design Tool
- Check that all pieces are scaling properly
- Identify design errors and work with the team in Honduras to develop improved design algorithms
- Update the list of variables that are returned to the user to ensure that all relevant parameters are returned.
- eliminate variables in the VNG that aren't used.
Chemical Doser
- Need to develop AutoCAD code to draw this part of the plant
- Need to develop the transition from linear dose controller to nonlinear dose controller
Entrance tank
- A first draft of this code has been created, but it has not yet been reviewed.
Rapid mix components
Requires review and possible upgrade to the first draft of the rapid mix design and then coding of the MathCAD to AutoCAD (MtA) code.
Chemical storage tanks
- These tanks need to be drawn. These may be an item that the onsite civil engineer will relocate to fit site conditions, but the design tool should show them at the correct elevation and in a reasonable location.
Floc Hopper Drain Valves
- Now that the floc hopper has been drawn, we need to code and draw the valves that dumps the flocs from the floc blanket to waste.
Horizontal Flocculator
- Need to continue coding the flocculator so change to horizontal flocculation and determine when this transition should occur.
Vertical Flocculator
- Need to ensure that the size of the ports between channels does not exceed the size available on the floc tank wall. Also, ensure that the spacing of the baffles in the last channel does not force them into the exit channel space (this may be taken care of by switching to horizontal flow).
Flocculator Drain System
- Need to code and draw the flocculator drain system.
Sedimentation Inlet and Exit Tanks
- The tanks at the end of the inlet and exit channels that hold the pipes leading to the distribution tanks and to the waste no longer need to be as tall as they are currently drawn. Rather they can just cantilever off the side of the sedimentation tank. Also the pipes in these tanks that lead to waste should be drawn as Tee's that connect to one another and then lead to waste.
Sedimentation Tank Control Pieces
- The pieces that allow the sedimentation tanks to be shut off need to be drawn (caps for the inlet channels, and exit channels). In addition, the caps should have a 1" PVC pipe that extends above the surface of the water in order to prevent air being trapped in the pipes delivering flocculated water to the sedimentation tank, and also to serve as a handle for removing the caps.
Material's List
- This list has been started and needs to be edited with input from the engineers in Honduras.
Documentation
- Continue the effort to create an AutoCAD video that will show the assembly of the plant with descriptions of each part. This video could serve as the documentation that gets sent to a user who designs a plant with the Design Tool that explains the technology behind each piece.
Plate Settler Spacing
Challenges for Fall 2009 and Beyond
Current Subteam Leader: Rachel Philipson
Number of team members needed: 3-4
Important team member skills:
- Fluid Dynamics Background
- Self-motivated
- Curious student
- Eager to learn
- Recommending one team member who's sole responsibility is troubleshooting: This requires extensive knowledge of how process controller and the experimental apparatus work
Challenges
- Continue to improve model of critical velocity with respect to floc roll-up with Matt and Monroe, try to determine what consitutes failure in terms of floc roll up
- Run experiments to test floc roll-up utilizing ramp function for a variety of tube settler sizes and attempting to visualize failure (flow rate/critical velocity at which a majority of flocs begin to roll-up)
- Investigate ways to optimize plate settler performance given changes in influent properties such as natural organic matter, pH, and alkalinity on floc performance and plate settler performance
- Continue to investigate the filter foam
- Begin to write a paper on floc roll up
Chemical Dose Controller
Challenges for Fall 2009
Subteam Leader:
Number of team members needed: 4
Important team member skills:
- MathCAD
- Process Controller
- Fluid Dynamics
Challenges
Non-Linear CDC
- Determine whether a single or multiple orifices should be used to connect rapid mix chamber and flocculation for optimum energy dissipation, head loss, and float sizing.
- We have tentative results in the mathCAD file however, we did not have enough time to optimize the functions created.
- Construct non-linear CDC and run experiments to evaluate design and ensure experimental results align with theoretical results.
For additional challenges, see suggested challenges our team did not address this semester.
Floating Flocs
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Outreach
Note: Please see the detailed task list for more up to date information.
Challenges for Outreach Fall 2009
Fundraising
Group Leader:
- N/A
Number of team members needed:
- Minimum of 2-3
Important team member skills:
- Good written and oral skills
- Ability to work closely with P.R. when finding Fundraising Contacts
- Good analytical skills for choosing grants and reviewing previous budgets
- Adaptability to the different requests of different organizations when looking at Requests for Proposals (Grant Writing term meaning grant application)
Challenges
- Submit the Ford Foundation Online Form
- Pursue contacts within Ford Foundation and Bill and Melinda Gates Foundation
- Analyze former AguaClara budgets for the budget update.
- Continue working on the Grant Text Modules Page.
- Update the Grant Short List as grants are submitted
Public Relations
Group Leader:
- N/A
Number of team members needed:
- 4-6
Important team member skills:
- Adobe Photoshop to aid graphics design
- Adobe Illustrator to create brochure layout
- Effective communication skills
- Leadership skills
- Knowledge of advertisement, business, media communications
- Creativity and ingenuity
Challenges
- Get more team members involved with presentations
- Try to pull together a fact sheet for presenter. Those would be good additional info to present other than the ones already on the slides.
- demo plant suite case maintenance
- Edit the Wiki to weed out outdated information
- Update the brochure with new projects
- Ensure continued bi-annual updates through newsletters
- Enforce the standardized Wiki format by constant updating (not just at the end of the year)
- Translate Wiki into Spanish including navigation menu as well as content
- Assign specific subgroups within PR such that different types of PR can be accessed more efficiently. I.E possibly set up subgroups of PR that deal with local pr, state/national pr, campus pr, student assembly/RSO/greek life/ sports team pr.
- Broaden the medium for pr. I.E. radio, newspapers, magazines, journals, pamphlets, brochures, banners, t-shirts, stickers, posters,etc.
- Establish a calendar of pr events in August that seeks to promote the project itself while incorporating pr events that surround fundraising, presentations, etc.
- Draw in students from business, entrepreneurial majors, marketing, advertising, etc.
- Integrate the PR team with the AguaClara student group by establishing it as a subset of the group itself.
- Work with Partnership for Honduran Health on campus to continue planning their health survey of our technology.
Rapid Mix
The rapid mix research project's goal is to determine if inadequate mixing in the rapid mix unit is responsible for the residual turbidity at the end of the AguaClara treatment process. This can be accomplished by adding some additional turbidity after the rapid mix process to see if those colloids have a significant effect on the settled water turbidity. If a large fraction of the colloids that didn't go through the rapid mix end up in the effluent, then it suggests that colloids that aren't properly exposed to aluminum hydroxide in the rapid mix process could also end up in the effluent. The next phase of this research would be to experiment with different rapid mix designs.
- energy dissipation rates
- residence times
- sequence of mixing units where each mixing unit has an alum feed