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The Fall '09 ANC Control team had worked on the development of a lime feeder for hydrated lime. Including constraints as non electricity use, low cost and replicable design; the team had founded some important parameters.
1. It is possible to assimilate the particles behavior in the lime feeder to the behavior of flocs into plate settlers of the sedimentation tank. A description of the theory is detailed in Experiment 3.
2. The main variables to consider in the lime feeder operation are the upflow velocity, the lime quality and the water composition.
3. The required lime needs to have very fine particles to avoid the apparatus clog caused by big lime chunks.
4. It is required a water with low presence of carbonate system, to facilitate the dissolution and pH change.
Despite this findings more research is required in order to confirm the theories and to find the explanation for some variables that are not enough clear yet.
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