Future Goals

FUTURE TASKS

The Fall '09 ANC Control team tried using a different theory (that of lime 'particles' and tube settler spacing equations) to obtain a consistency between the theoretical and experimental results, this theory was only true for a certain brand of lime after which the lime feeder ran for a maximum uninterrupted duration of 4hrs 20min.

Many parameters control the pH performance of the lime feeder (such as upflow velocities of water, quality of water, quality of lime, quantity of lime, constructional design of the lime feeder, duration for which a stable pH of 12 is obtained, etc.). During the Fall '09 experiments, a new design of a lime feeder was tried out and performance was tested against water quality and lime quality. Hence, the future goals for the coming teams include:

* Finding out what, if not the hypothesized carbonates, is causing the poor performance of the lime feeder in comparison to its theoretical run length and how can it be overcome.

* Verifying if the quality of water has a strong influence on the pH behavior or not i.e. whether it is worth using the costlier distilled water for experiments in place of tap water or not. (To make these evaluations, it is necessary to run more trials on the experiment using the new lime but with tap water; and using the old brand of lime with distilled water.)

* Evaluating if the design calculations made so far are acceptable for different types of lime (different brands will have slightly different compositions) with slightly varying solubility characteristics in water.

* Improving the constructional design of the lime feeder (since the present one is difficult to handle) or experimenting a newer model for the lime feeder.