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Gracias Experimental Set ups

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There are several critical design decisions that must be made as we develop a design proposal for this plant. These design choices include:

  • width and number of the sedimentation tanks
    • depth of the sedimentation tank is related to the width
    • maximum length of the sedimentation tanks is determined by the flow capacity of the two triangular manifold in the base of the sedimentation tank
  • width of the flocculation tank - the flocculator for 3000 L/min must be at least 2 m deep and 1 m wide. It can, of course, be deeper, or wider, but it must be at least that large to get a G value of 10/s If the goal were to get to 5/s then it would need to be at least 2.4 m deep and 1.2 m wide. These calculations are based on the assumption that the flocculator dimensions were h=2b=2w.
  • location of the inlet tank (on top of the floc tank or elsewhere)
  • use of an elevated platform or backfill to create walkways
  • depth of the channels with adequate carrying capacity but with a system for shutting off flow to individual sedimentation tanks.
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