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Environmental Engineering: Climate Change & Water Management

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Environmental Engineering: Climate Change & Water Management

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Questions and Answers

What percentage of the global population used a safely managed sanitation service in 2017?

60%

45% (correct)

80%

20%

What is the primary function of a septic tank in rural sanitation technologies?

To transfer pollution to another water source

To treat wastewater through anaerobic digestion (correct)

To collect and store wastewater for later use

To promote open defecation practices

What is the estimated number of people who still practice open defecation?

673 million (correct)

200 million

1 billion

400 million

What is the primary mechanism of pathogen transmission in poor sanitation facilities?

Transmission by insects and rodents Signup and view all the answers

What is the primary benefit of using wetland technology in rural sanitation?

Providing a natural system for wastewater treatment Signup and view all the answers

What is the estimated percentage of the global population that uses private sanitation facilities connected to sewers with wastewater treatment?

31% Signup and view all the answers

Which sanitation technology is designed to receive wastes with no prior treatment?

Waste water ponds/lagoons Signup and view all the answers

What is the primary purpose of phyto-degradation in wastewater treatment?

To break down organic pollutants Signup and view all the answers

What is the main advantage of using dry toilets in rural sanitation?

They require less water Signup and view all the answers

What is the term for the water embodied in the production of food and fiber?

Virtual water Signup and view all the answers

What is the primary zone in a wastewater pond/lagoon where anaerobic decomposition occurs?

Anaerobic bottom zone Signup and view all the answers

What is the primary purpose of hydraulic control in wastewater treatment?

To control the flow of water in the system Signup and view all the answers