Question 1 of 8
Intermediate

Which treatment is necessary for storm water?

Question 2 of 8
Intermediate

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

Question 3 of 8
Intermediate

What are the disadvantages of the traditional gravitation system?

Question 4 of 8
Intermediate

What is grey wastewater?

Question 5 of 8
Intermediate

Why is the life cycle cost of the pressurised wastewater system low?

Question 6 of 8
Intermediate

What are the four most common types of wastewater from commercial buildings?

Question 7 of 8
Intermediate

Which method of backflow prevention has the following advantages: Offers maximum backflow and flooding protection: Is not sensitive to fat, grease, sands and solids in the water. Makes it possible to use sanitary facilities in case of backflow. Offers protection for paved areas. Can be connected to buildings’ storm water drains.

Question 8 of 8
Intermediate

Under which circumstances should you consider a pressurised wastewater system rather than a gravitation system

Question 8 of 8
Intermediate

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1: Which treatment is necessary for storm water?
It has to go through an oil/petrol separator
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1: Which treatment is necessary for storm water?
It has to go through a sand pressure
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1: Which treatment is necessary for storm water?
None – it is pumped directly to the recipient
2: Who has the financial responsibility in the case of flooding in most countries?
The building owner and the building designers
2: Who has the financial responsibility in the case of flooding in most countries?
The government and the wastewater authorities
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2: Who has the financial responsibility in the case of flooding in most countries?
The building designers and the contractors
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3: What are the disadvantages of the traditional gravitation system?
Many gravitation pipes with a small diameter have to be installed outside the building and the inspection wells are expensive
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3: What are the disadvantages of the traditional gravitation system?
Inspection wells are difficult to maintain and the initial cost of the pumping pit is high
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3: What are the disadvantages of the traditional gravitation system?
Many gravitation pipes have to be installed outside the building and a great deal of excavation work is needed.
4: What is grey wastewater?
Water, which is discharged from showers, sinks, washing machines, canteen kitchens etc.
4: What is grey wastewater?
Water which is primarily discharged from toilets
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4: What is grey wastewater?
Water which has not been affected by human influence
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5: Why is the life cycle cost of the pressurised wastewater system low?
There are only a few gravitation pipes outside the building and the excavation cost is low
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5: Why is the life cycle cost of the pressurised wastewater system low?
The initial cost of the lifting station is lower compared with a pit and there are no gravitation pipes outside the building
5: Why is the life cycle cost of the pressurised wastewater system low?
The lifting station and the pipe system is maintenance-free
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6: What are the four most common types of wastewater from commercial buildings?
Wastewater, storm water, drainage water and wastewater from parking areas
6: What are the four most common types of wastewater from commercial buildings?
Rainwater, wastewater, storm water and drainage water
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6: What are the four most common types of wastewater from commercial buildings?
Wastewater, storm water, air-conditioning wastewater and wastewater from parking areas
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7: Which method of backflow prevention has the following advantages: Offers maximum backflow and flooding protection: Is not sensitive to fat, grease, sands and solids in the water. Makes it possible to use sanitary facilities in case of backflow. Offers protection for paved areas. Can be connected to buildings’ storm water drains.
Anti-flooding valves
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7: Which method of backflow prevention has the following advantages: Offers maximum backflow and flooding protection: Is not sensitive to fat, grease, sands and solids in the water. Makes it possible to use sanitary facilities in case of backflow. Offers protection for paved areas. Can be connected to buildings’ storm water drains.
Pumping stations
7: Which method of backflow prevention has the following advantages: Offers maximum backflow and flooding protection: Is not sensitive to fat, grease, sands and solids in the water. Makes it possible to use sanitary facilities in case of backflow. Offers protection for paved areas. Can be connected to buildings’ storm water drains.
Lifting stations
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8: Under which circumstances should you consider a pressurised wastewater system rather than a gravitation system
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.
8: Under which circumstances should you consider a pressurised wastewater system rather than a gravitation system
When there is a long distance between the building and the sewer main or when the sewer main is located far below the building.
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8: Under which circumstances should you consider a pressurised wastewater system rather than a gravitation system
When there is a short distance between the building and the sewer main or there are obstacles between the building and sewer main.
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