Disinfection (9-12)
Click the links to the right to view the online Teacher's Guide, Student Logbook, or visit WebQuest unit for this W.E.T. You can also download the Teacher's Guide and Student Logbook in either PDF or Word document format.
A number of treatment processes are used to remove microbiological contaminants from drinking water. These individual treatment processes may be used in combination with one another but each has specific advantages and disadvantages that must be considered before designing a treatment system. This lab introduces student to the types of disinfection treatments available that are listed below:
- Thermal disinfection (e.g. boiling water)
- Chemical disinfection (e.g. chlorine and iodine)
- Physical disinfection (e.g. filtration)
- Oligodynamic disinfection (e.g. the use of metals such as silver, gold, copper and tin)
- Photocatalytic disinfection (e.g sunlight and photocatalytic materials such as TiO2 (titanium dioxide)
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Teacher's Guide Word (1.1 MB) ■ Student Logbook Word (661 KB) ■ WebQuest HTML template Word template |
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National Science Education Standards Content A Content B Content C Content E Content F Content G Teaching A Teaching B Teaching D Teaching E |
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Illinois Learning Standards - Science 11.A.4a 11.A.4b 11.A.4c 11.A.4f 13.A.4c |
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