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Solar Disinfection

Last updated over 5 years ago

10 questions

2

2

2

3

3

4

2

8

1

1

Question 1

1.

Identify the decade that Solar Disinfection, or SODIS, was developed.

1970s

1990s

2000s

1980s

Question 2

2.

SODIS was created as a household water treatment option to prevent _____ in developing countries.

typhoid fever

diarrhea

hepatitis A

cholera

Question 3

3.

What type of container is recommended for SODIS?

metal bottle

glass bottle

plastic bottle

aluminum bottle

Question 4

4.

Identify the three types of germs that are inactivated by SODIS.

Question 5

5.

Explain "turbidity" in relation to water (Be sure to include what water looks like with high turbidity and low turbidity).

Question 6

6.

Differentiate between the time it takes to disinfect water on a sunny day versus a cloudy day.

Question 7

7.

In what areas does the Center for Disease Control (CDC) say it is appropriate to use SODIS?

Where there is an availabiliy of plastic bottles.

Where there is a presence of community motivation.

Where there is correct and consistent training on usage.

ALL of the above.

Question 8

8.

Match each characteristic with the correct SODIS outcome.

No cost if using recycled plastic bottles.
Length of time required to treat water.
Proven to reduce virsus, bacteria, and protozoa in water.
Must pretreat water of high turbidity.
Must have a large supply of suitable plastic bottles.
Limited volume of water can be treated at a time.
Minimal change in taste to the water.
Simplicity of design.

Benefits of SODIS
Drawbacks of SODIS

Question 9

9.

It is estimated that over 100 million people in 137 developing countries uses SODIS as a daily drinking water treatment.

True

False

Question 10

10.

SODIS is virtually a zero-cost technology.

True

False