Republic of the Philippines Department of Education


III. Quality Control Checklist



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III. Quality Control Checklist


DRAINING EFFICIENCY

Indicators

Weighted Mean

Interpretation

1

3.48

Excellent Quality

2

3.24

Good

3

3.5

Excellent

4

3.72

Excellent

5

3.5

Excellent

6

3.52

Excellent

7

3.24

Good

8

3.25

Excellent

9

3.21

Good

10

3.25

Excellent

GRAND MEAN

3.4

Excellent Quality
Table 2.3.1. Draining Efficiency Weighted Mean


Table 2.3.1 presents the rating for drainage efficiency. This area is rated by the 10 selected students who have knowledge about robotics. The grand mean is 3.4 which is interpreted as having an Excellent quality. The students acknowledged the efficiency of the drainage system as it could control and collect water.

The highest rated item is: “Various solid wastes cannot obstruct the flow of drain,” with weighted mean of 3.72 interpreted as Excellent Quality. This means the drainage area is effective in limiting the amount of solid wastes entering the system. The lowest rated item is: “The drains are laid in an area where water can be fully sucked up,” with a weighted mean of 3.21, which is interpreted as Good. This means that the placement for the drain can still be improved by the researchers to increase draining efficiency.



FILTERING ABILITY

Indicators

Weighted Mean

Interpretation

1

3.62

Excellent Quality

2

3.54

Excellent

3

3.78

Excellent

4

3.77

Excellent

5

3.43

Excellent

6

3.54

Excellent

7

3.24

Good

8

3.34

Excellent

9

3.87

Excellent

10

3.8

Excellent

GRAND MEAN

3.59

Excellent Quality
Table 2.3.2. Filtering Ability Weighted Mean

Table 2.3.2 presents the ratings for filtration ability. Hydra applies a water filtration performance checklist similar to the method used by US-based Consumer reports on water filtration to understand suitability, scalability and sustainability of products. This area is rated by the same selected students who have knowledge about robotics. The grand mean is 3.59 which is also interpreted as having an Excellent quality. This means, overall, the system in filtering water is effective in cleaning the flood water entering the system.

The highest rated item is: “Mesh filters installed in the filtering system does not wear away easily,” with a weighted mean of 3.87, which is interpreted as Excellent Quality. This means that the non-organic material in the filtration system does not need to be replaced often. The lowest rated item is: “It reduces water contaminants such as dissolved salts, pesticides, and heavy metals,” with a weighted mean of 3.24, which is interpreted as Good. This means that the activated carbon in the filtration system needs another adsorbing material to further reduce and filter water contaminants.


STORAGE CAPACITY

Indicators

Weighted Mean

Interpretation

1

3.25

Excellent Quality

2

3.5

Excellent

3

3.52

Excellent

4

3.83

Excellent

5

3.44

Excellent

6

3.4

Excellent

7

3.48

Excellent

8

3.33

Excellent

9

3.24

Good

10

3.54

Excellent

GRAND MEAN

3.45

Excellent Quality

Table 2.3.3. Storage Capacity Weighted Mean

Table 2.3.3 is the Storage Capacity. This area is rated by the same selected students who have knowledge about robotics. The grand mean is 3.45 which is interpreted as Excellent Quality. This means the prototype can successfully store the filter water and is safe to dispense the water for outdoor water purposes.

The highest rated item is: “The shape of the tank is suitable for the location,” with a weighted mean of 3.54, which is interpreted as Excellent. This means that tanks of cylindrical shape is a suitable container shape for water storage. The lowest rated item is: “The size of the tank is suitable for the location,” with a weighted mean of 3.24, interpreted as Good. This means that the researchers have to design a bigger container to store the filtered water.

Legend Interpretation


  1. – 1.75 Strongly Disagree Low Quality

1.76 – 2.50 Disagree Moderate Quality

2.51 – 3.25 Agree Good Quality



3.26 – 4.0 Strongly Agree Excellent Quality

With the Project Hydra Filtration set-up the researcher measured the percent recovery of the water being filtered. Percent recovery is the amount of water that is being recovered as clean water as opposed to being discarded as wastewater (also known as “brine” or “concentrate”). The equation for percent recovery is as follows:



The table below is the data acquired from the percent recovery tests that were performed by the researcher. The water used for testing the filtration was acquired from the floodwater inside the Science and Technology Education Center campus.




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