WorksheetsWater Pollution and Water Treatment
Total questions: 10
Worksheet time: 4mins
What kind of pollution can be traced to a specific origin?
Point source pollution
Non-point source pollution
Focused point pollution
Cumulative pollution
Which of the following is an example of a non-point pollution source? (You may choose more than one answer.)
urban run-off
factory discharge
agricultural irrigation
eroding streambanks
Which water pollutant is the main reason behind eutrophication of lakes and estuaries and high biological oxygen demand (BOD)?
inorganic chemicals
thermal pollution
sewage
eroded sediment
Which of the following water sources has the best chance of recovery from the effects of water pollution ?
lake
groundwater
river
In the Philippines, which is the major source of water pollution?
industrial wastewater
agricultural run-off
deforestation
untreated sewage
In the treatment of drinking water, which of the following is a chemical treatment process?
aeration
sedimentation
coagulation
filtration
In the treatment of drinking water, this initial process removes objects such as rags, paper, plastics, and metals to prevent damage and clogging of downstream equipment and piping.
screening
flocculation
reverse osmosis
flotation
In municipal sewage treatment, (a) treatment removes suspended and floating particles using mechanical processes.
The solid left after the treatment of sewage is called (a) .
Which of the following is/are true?
Drinking water needs to comply with national standards for safety.
Treated sewage water does not have to comply with national standards before release back into a water body.
All physical and chemical changes in a body of water is considered pollution.
