...
There are many components of the water treatment plant that have not yet been fully designed. Develop a systematic approach to designing and drawing the additional components. We also need to develop methods for the inevitable transitions in design for components that don't scale smoothly. Examples of noncontinuous scaling include the transition from linear to nonlinear chemical dose controllers and the sedimentation tank inlet channel that that becomes so deep that it extends into the inlet manifold space.
Sedimenation Tank
Flocculation and Sedimentation Plant Flow Dump System
The pipe weirs at the end of the sedimentation tank entrance and exit channels need to be connected to the plant drain channel. The connection could either be with a pipe or with an open channel
Drain Channel
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.
...
Floc hopper in cuatro communidades
Floc hopper drain valves
Sedimentation tank drain valves
Currently no valves are shown on the CAD drawings. The size of the valves is specified or could easily be specified, but no MtA code exists. We should determine the best way to add realistic drawings of these valves. It is possible that we could obtain a library of these valves so that we wouldn't have to create the AutoCAD drawings, but could simply copy them and possibly scale them. Also note that all of the flocculator and sed tank drain valves are to empty into a drain channel along the sed inlet end of the tanks.
...
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.
Flocculator drain system
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
...
Of these options the 2nd one is preferable because the valves will be accessible whereas the check valves would be an inaccessible mechanical component that could easily fail. The flocculator drain system will involve adding either buried PVC pipes or constructing an underdrain false floor in the flocculator with channels connecting each compartment to a drain valve.
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.
Turbulent Flow (nonlinear) Chemical Dose Controller
This code needs to be heavily edited and brought into compliance with the variable naming protocol.
...
A first draft of this code has been created, but it has not yet been reviewed.
Miscellaneous
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.
...