Wastewater Practice Exam With Already Passed Answers.
When organic wastes are discharged to receiving waters, O2 is depleted by _____. - Answer bacteria Hydrogen sulfide gives off an odor similar to____. - Answer rotten eggs 3 diseases potentially carried by wastewater are _____. - Answer typhoid fever, disentery, cholera Immediate first aid for butrns is to ____. - Answer flood with cold water What most likely causes an electic motor failure? - Answer mopisture What mixed liquor characteristics indicate a healthy activated sludge process? - Answer brown color, frothy appearance, and musty odor T/F: Algae is a plant life necessary for the proper functioning of a stabilization or oxidation pond. - Answer True Chlorine gas is ? - Answer heavier than air T/F: The highest concentration of algae growth in a facultative lagoon is usually observed near the top. - Answer True Common hydraulic detention times for primary clarifiers range from ____ hours - Answer 2 - 3 hours T/F: Methane is produced in an anaeroibic digester and can be used as a fuel? - Answer True T/F: The rock in a trickling filter is usually placed on a tile underdrain system. - Answer True
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