...
Goals in red have not been started
Goals in orange are underway
Goals in green have been completed h2.
Ecuador Design Report
...
Heather & Jeff - Design sent 6/12/09
Work with Professor Hugo Castillo to provide all necessary documention for a demonstration plant. This needs to be a very high priority to ensure that this can be a success. He needs a detailed design that is carefully reviewed ASAP.
...
The drain channel runs along the flocculation and sedimentation tanks at the end of the sed tank that contains the inlet channel. The drain channel should have a slope toward the sedimentation tank end and should be designed to handle the flow that would be generated from opening all of the drain valves for the floc and sed tanks.
Sedimentation tank exit channel
Josiah, Taisuk, Jeff - Completed 6/24/09
The sedimentation tank exit channel is currently a replicate of the entrance channel. The entrance channel size is based on the constraint of not breaking up flocs. This constraint causes the exit channel to be much larger than is necessary. The exit channel should be designed based on the constraint that the head loss in the open channel must be very small compared with the head loss in the launder orifices. This constraint ensures that the flow is uniformly distributed between sedimentation tank bays. The most sophisticated solution algorithm could use the direct step method and incorporate the changing flow through the channel. A simpler solution that would be conservative would be a simple friction slope calculation using the Darcy Weisbach equation adopted for flow in a rectangular channel. The friction slope times the length of the channel can be compared with the head loss in the orifices.
Floc Hopper design
Ben, Chris - Est. Completion Date 6/30/09
The floc hopper fits nicely under the sed tank entrance channel for small plants, but for larger plants that space is reduced since the entrance channel is larger. We need a design for the floc hopper that accounts for the changing geometry of the entrance channel. The floc hopper also needs MtA code.
...
Flocculator, Entrance Tank and Rapid Mix
Ports between flocculator channels
May, Lindsey - Completed 6/18/09
After consulting with engineer Wil Serrano, the ports between the flocculator channel need to be switched from the bottom of the tank to the top. From a structural perspective it is much better to be able to tie the walls together at the top of the wall.
Baffle Spacing and Exit Port
May, Lindsey--7/8/09 tentative
Adding the port that connects the floc tank to the sed tank and arranging the baffles to align with this exit.
Flocculator drain system
Josiah, Taisuk, Jeff - Est. Completion Date 7/12/09
The flocculator drainage system needs to be designed now that we are using ferrocement baffles for larger plants. The two options for draining the flocculator were to
...
This code needs to be heavily edited and brought into compliance with the variable naming protocol.
Entrance tank
...
A first draft of this code has been created, but it has not yet been reviewed.
...
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.
Materials List
Andrew, Nanditha - Est Completion Date 6/30/09
Discuss the outputs of the current materials list with the AguaClara team in Honduras and determine what additional parameters should be returned to the user.
...