1. Characterize the differences among untreated, primary-treated, & secondary-treated sewage and compare and describe the effects of dumping each type on the eutrophication of a pond and a fast-moving river.
2. Flooding after 2 weeks of heavy rainfall in Tooele, Utah proceeded a high rate of diarrheal illness. Giardia lamblia was isolated from 25% of the patients. A comparison study of a town 65mi away revealed diarrheal illness in 2.9% of the people interviewed. Tooele has a municipal water system and a municipal sewage treatment plan. Based on the info provided, what is the probable cause of this outbreak of diarrhea in Tooele? What other a possible causes are supported by these same facts? What metods could be used to stop the current outbreak and prevent future outbreaks?
3. The bioremediation process shown in photo below isnused to remove benzene and other hydrocarbons from soil contaminated by petroleum. The pipes are n used to add nitrates, phosphates, oxygen, or water. Why isneach of these ingredients added? Why is it not always necessary to add bacteria? How does one know when to add or not add and which