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h1. Chemical Dose Controller


h2. Overview

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The chemical dose controller increases the resiliency of AguaClara plants because operators are only required to adjust chemical dosing settings based on incoming turbidity, not based on flow rates. The linear chemical dose controller is currently comprised of three components, the linear flow orifice meter, the flow controller, and the chemical doser. These components of the system act together to allow the plant to respond to changes in inflow by both linearizing the change in plant flow and automatically adjusting chemical dosing to the plant. A nonlinear dose controller is being designed for high flow rates where the linear dose controller fails.

Stay up-to-date on this project by checking the [Meeting Minutes|CDC Meeting Minutes], [goals|CDC Goals] and [Challenges for Future Semesters|CDC Future Challenges].

h2. Current Research Teams +(These links are outdated. Please update.)+

[SummerFall 2009 Research:Nonlinear SurfaceChemical Foam FormationDoser|SummerNonlinear 2009Chemical CDCDose ResearchController]
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h2. Past Research Teams

[FallSummer 2009 Research: NonlinearSurface ChemicalFoam DoserFormation|NonlinearSummer 2009 ChemicalCDC DoserResearch]
* RedesigningTrying ato chemicalmodel doserthe withsurface afoam preciseformation nonlinearthat chemicaltakes doseplace responseat tothe changesend inof plantrapid flowmix whilein alsocurrent minimizingplants aerationand income anup attemptwith ina preventretrofit surfacedesign foams. 

h2. Past Research Teamsthat will minimize air entrainment.

[Linear Chemical Dose Controller]
* The linear dose controller uses major losses to adjust chemical doses to the plant as raw water flow rates change.

[Nonlinear Chemical Dose Controller Fall08-Summer09]
* Major losses cannot be used to adjust chemical flow rates when flow in the dosing tube is turbulent. Therefore, a chemical doser with a precise nonlinear chemical dose response to changes in plant flow is being designed.

[Rapid Mix Chamber Design Program]
* The design of the entrance tank for high flow rate plants such as Gracias.