Sewage

Which of the following types of sewage treatment is properly matched?

• A. Primary-biological process

• B. Secondary-physical process

• C. Secondary-chemical process

• D. Primary- physical process

• E. ?

Which of the following is the most ecologically responsible way to dispose of sewage sludge?

• Incineration (burn)

• dumping into deep ocean trenches

• dumping into landfills

• using it as fertilizer

• ?

Tags

NGSS.MS-LS2-5

Which of the following is not true for most sewage treatment in the United States?

• tertiary treatment is common

• bacteria is an important part of the process

• treated wastewater is released into rivers

• disinfection of wastewater occurs

• ?

In a septic tank system, which of the following is not true?

• A. wastewater flows into a settling tank

• B. solids are decomposed by bacteria

• C. bacteria treated waste is discharged into an absorption field

• D. wastewater is sanitized after being distributed to the absorption field

• E. ?

Which of the following substances are removed to the greatest extent by sewage treatment?

• organic pesticides

• organic waste

• toxic metals

• plastic waste

• ?

Which of the following is not removed during primary and secondary sewage treatment?

• human wastes

• nitrates

• Ramen noodle bags

• organic materials

• ?

Tags

NGSS.MS-PS1-2

Where is bacteria utilized in septic tanks and sewage treatment plants?

• septic tank and leach field; primary and secondary treatment

• septic tank; primary treatment and chlorination

• leach field; secondary treatment

• septic tank; secondary treatment

• ?

Tags

NGSS.MS-LS2-3

What is the primary purpose of sewage treatment plants?

• To produce drinking water

• To remove contaminants from wastewater

• To generate electricity

• To create fertilizers

Which of the following processes is typically the first step in sewage treatment?

• Chlorination

• Sedimentation

• Filtration

• Aeration

In the context of sewage treatment, what does BOD stand for?

• Biological Oxygen Demand

• Biochemical Oxygen Depletion

• Bacterial Oxidation Degree

• Biological Organic Decomposition