8 questions Intermediate

ECADEMY test

3 - Wastewater

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Question 5 of 8 Intermediate

Who has the financial responsibility in the case of flooding in most countries?

Question 7 of 8 Intermediate

Which method of backflow prevention has the following advantages: Offers maximum backflow and flooding protection. Ideal for safeguarding electrical and other high value equipment. Offers unlimited use of sanitary facilities in case of backflow. Is easily serviced. Can be installed in a building’s storm water drains. Is not sensitive to sand and solid objects in the water.

Question 8 of 8 Intermediate

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Correct
Q: Which treatment is necessary for storm water?
A: None – it is pumped directly to the recipient
Correct
Q: Which three factors have increased the risk of flooding and back flow?
A: A higher frequency of rainfalls, increased length of rainfalls and more paved areas today than earlier.
Correct
Q: Under which circumstances should you consider a pressurised wastewater system rather than a gravitation system
A: When there is a long distance between the building and the sewer main, when the sewer main is up-hill or when there are obstacles between the building and the sewer main.
Correct
Q: Of the three anti-flooding systems, why is the lifting station the superior system?
A: It is pre-assembled and its location inside the building makes it easily accessible for service. Furthermore, it offers maximum backflow and flooding protection
Correct
Q: Who has the financial responsibility in the case of flooding in most countries?
A: The building owner and the building designers
Correct
Q: What are the four most common types of wastewater from commercial buildings?
A: Wastewater, storm water, drainage water and wastewater from parking areas
Correct
Q: Which method of backflow prevention has the following advantages: Offers maximum backflow and flooding protection. Ideal for safeguarding electrical and other high value equipment. Offers unlimited use of sanitary facilities in case of backflow. Is easily serviced. Can be installed in a building’s storm water drains. Is not sensitive to sand and solid objects in the water.
A: Lifting stations
Correct
Q: What is grey wastewater?
A: Water, which is discharged from showers, sinks, washing machines, canteen kitchens etc.