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Questions and Answers
What is the primary purpose of passing water through a sand filter?
Which of the following is a method of disinfecting sewage?
What is the effect of chlorine treatment on sewage?
What is removed from the water during sand filtration?
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Why is chlorine treatment effective in disinfecting sewage?
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Study Notes
Oil Spills
- Large oil spills have occurred in recent years, including the 2010 spill in the Gulf of Mexico.
Wastewater Treatment
- Wastewater is used water from various sources, including toilets, showers, baths, kitchen sinks, laundries, and industrial processes.
Primary Treatment
- Primary treatment removes large layers of waste, leaving a remaining liquid that can be sent to secondary treatment.
Secondary Treatment
- Secondary treatment removes more than 90% of suspended solids.
Tertiary Treatment (Effluent Polishing)
- Tertiary treatment is used to further clean water before discharging it into a sensitive ecosystem.
- Methods used in tertiary treatment include:
- Sand filtration to remove particulate matter
- Chlorine treatment, which is effective in disinfecting sewage
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Description
This quiz assesses your understanding of the environmental consequences of underwater oil drilling, including the impact of oil spills on marine ecosystems.
