WERC Deliverables
Along with the delieverables for the capstone class, RAVA Fontus engineering had a list of deliverables for the WERC Competition.
Safety Summary and Flow Sheet: Due March 19th process of bench-scale operation, chemicals (MSDS), process safety, and waste streams.
Written Report: Due March 21st
15 minute oral presentation on April 7th, 2014 at competition.
Bench Scale Demonstration: At set-up decribe main points of project as well as demonstrate administration of additive
Poster Presentation: Describe poster after bench scale demonstration
For more detail on the project, visit the WERC competition website
DrinkingWater Stabilization Project
Mineral
|
Children RDA Range (mg/day)
|
Adults (18-65yrs) RDA Range (mg/day)
|
Elders (65+) RDA Range (mg/day)
|
RDA Average (mg/day)
|
Calcium
|
700-1300
|
1000-1300
|
1000-1200
|
1000
|
Iron
|
7-15
|
8-15
|
8-17
|
11
|
Magnesium
|
30-240
|
240-410
|
310-420
|
270
|
Iodine
|
0.09-0.13
|
0.12-0.15
|
0.12-0.15
|
0.12
|
Potassium
|
1000-2000
|
2000-4700
|
2000-4700
|
3450
|
Zinc
|
2-11
|
12-20
|
10-18
|
18
|
Sodium
|
900-2000
|
1000-2200
|
1500-2300
|
<2300
|
Mineral
|
Calcium
|
Iron
|
Magnesium
|
Iodine
|
Potassium
|
Zinc
|
Sodium
|
Concentration (mg/L)
|
8
|
0.005
|
10
|
0.001
|
7
|
1
|
12
|
The final design of the optimum mineral additive was composition 5. This design was chosen because it had the lowest turbidity, color, and color which made this design clear and odorless.
Project Description
RAVA Fontus Engineering Inc. was given the task of creating an optimum mineral additive that will be added to water that has undergone the RO treatment process. The mineral additive must take into consideration the nutritional requirements of children, adults, and elders. The design cannot negatively effect smell or taste.
Project Constraints
The team must adhere to these constraints for the design of the project;
-Analysis and use of only RO water.
-The mineral composition of current water bottle brands that utilize RO during the treatment process.
-Must be in complinance for regulations pertaining to human health and the water distribution system.
This is the decision matrix used to determine which composition to use as the optimum mineral composition. Parameters were ranked from 1 (lowest) to 10 (highest). The best composition would have the highest score and would be used as the optimum mineral composition. It was composition 5 that had the highest score and would be chosen as the optimum mineral additive.
Criteria
|
Weight
|
Composition 1
|
Composition 2
|
Composition 3
|
Composition 4
|
Composition 5
|
Color
|
0.10
|
4.5
|
5.0
|
6.0
|
7.5
|
8.0
|
Odor
|
0.10
|
5.0
|
7.0
|
9.0
|
9.0
|
9.0
|
TDS
|
0.10
|
4.0
|
5.0
|
6.0
|
8.5
|
8.5
|
Turbidity
|
0.10
|
3.0
|
6.0
|
7.0
|
9.0
|
9.0
|
Electroconductivity
|
0.10
|
5.0
|
5.5
|
7.0
|
8.0
|
8.0
|
Nutritional Value
|
0.30
|
8.5
|
7.0
|
6.0
|
4.0
|
4.0
|
Cost
|
0.15
|
3.0
|
5.0
|
6.0
|
9.0
|
9.0
|
Water Distribution System Impact
|
0.05
|
3.0
|
4.0
|
4.0
|
7.0
|
7.0
|
Total
|
1.0
|
5.3
|
6.2
|
7.5
|
8.9
|
8.95
|
Final Design
Decision Matrix
Reccomended Daily Allowance Values
RAVA Fontus Engineering Inc. Updated: 5/1/14
From the US Department of Health and Human services, the reccomended daily allowance (RDA) values represent the reccomended intake for these minerals at various age groups. Since these values vary between each age group, an average was determined and would later be used to calculate the final design's daily value.
Photo Credit: Google
Photo Credit: Google
Photo Credit: Google
Mineral
|
Regulatory Maximum Concentration (mg/L)
|
Calcium
|
Not Regulated
|
Copper
|
1.0
|
Iron
|
0.3
|
Magnesium
|
Not Regulated
|
Iodine
|
Not Regulated
|
Potassium
|
Not Regulated
|
Zinc
|
5.0
|
Sodium
|
Not Regulated
|
Chloride
|
250
|
Total Dissolved Solids
|
500
|
Bottled Water Regulatory Limits
Bottled water is regulated under the Food and Drug Administration. This table lists the regulatory limits of constituents considered in the design of the optimum mineral composition.
Mineral
|
RDA Average (mg/day)
|
Popular RO Bottled Water (mg/L)
|
% Daily Value
|
Composition 5 (mg/L)
|
% Daily Value
|
Calcium
|
1000
|
0
|
0%
|
8
|
2%
|
Iron
|
11
|
0
|
0%
|
0.005
|
0.1%
|
Magnesium
|
270
|
0
|
0%
|
10
|
11%
|
Iodine
|
0.12
|
0
|
0%
|
0.001
|
3%
|
Potassium
|
3450
|
0
|
0%
|
7
|
1%
|
Zinc
|
18
|
0
|
0%
|
1
|
17%
|
Sodium
|
<2300
|
1
|
0%
|
12
|
2%
|
For more information regarding the project, click the following links:
Percent Daily Value
This table compares the improvement of health benefits from RO water bottle to the optimum mineral composition. The % daily value was calculated using the RDA average, mineral concentration, and an assumed drinking rate of 3 liters a day.
Photo Credit: Google
Photo Credit: Google
RAVA Fontus Engineering Inc.
