Question 1 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 2 of 8
Intermediate

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

Question 3 of 8
Intermediate

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

Question 4 of 8
Intermediate

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

Question 5 of 8
Intermediate

What is grey wastewater?

Question 6 of 8
Intermediate

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

Question 7 of 8
Intermediate

Which treatment is necessary for storm water?

Question 8 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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1: 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
1: 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
1: 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
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
2: Who has the financial responsibility in the case of flooding in most countries?
The building designers and the contractors
3: 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
3: 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
3: Why is the life cycle cost of the pressurised wastewater system low?
The lifting station and the pipe system is maintenance-free
4: What are the four most common types of wastewater from commercial buildings?
Wastewater, storm water, drainage water and wastewater from parking areas
4: What are the four most common types of wastewater from commercial buildings?
Rainwater, wastewater, storm water and drainage water
4: What are the four most common types of wastewater from commercial buildings?
Wastewater, storm water, air-conditioning wastewater and wastewater from parking areas
5: What is grey wastewater?
Water, which is discharged from showers, sinks, washing machines, canteen kitchens etc.
5: What is grey wastewater?
Water which is primarily discharged from toilets
5: What is grey wastewater?
Water which has not been affected by human influence
6: 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.
6: 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.
6: 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.
7: Which treatment is necessary for storm water?
It has to go through an oil/petrol separator
7: Which treatment is necessary for storm water?
It has to go through a sand pressure
7: Which treatment is necessary for storm water?
None – it is pumped directly to the recipient
8: 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.
Anti-flooding valves
8: 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.
Pumping stations
8: 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.
Lifting stations