Question 1 of 8
Intermediate

Which treatment is necessary for storm water?

Question 2 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 3 of 8
Intermediate

What is grey wastewater?

Question 4 of 8
Intermediate

Which method of backflow prevention has the following disadvantages: Highly sensitive to sand and solid objects in the water. In a backflow situation, it is not possible to use the sanitary facilities that are connected to this device. Storm water drains cannot be connected to this device. The device is not 100% safe and should be used only to protect secondary rooms with no vital technical installations.

Question 5 of 8
Intermediate

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

Question 6 of 8
Intermediate

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

Question 7 of 8
Intermediate

Of the three anti-flooding systems, why is the lifting station the superior system?

Question 8 of 8
Intermediate

Which three factors have increased the risk of flooding and back flow?

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
1: Which treatment is necessary for storm water?
It has to go through a sand pressure
1: Which treatment is necessary for storm water?
None – it is pumped directly to the recipient
2: 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
2: 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
2: 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
3: What is grey wastewater?
Water, which is discharged from showers, sinks, washing machines, canteen kitchens etc.
3: What is grey wastewater?
Water which is primarily discharged from toilets
3: What is grey wastewater?
Water which has not been affected by human influence
4: Which method of backflow prevention has the following disadvantages: Highly sensitive to sand and solid objects in the water. In a backflow situation, it is not possible to use the sanitary facilities that are connected to this device. Storm water drains cannot be connected to this device. The device is not 100% safe and should be used only to protect secondary rooms with no vital technical installations.
Anti-flooding valves
4: Which method of backflow prevention has the following disadvantages: Highly sensitive to sand and solid objects in the water. In a backflow situation, it is not possible to use the sanitary facilities that are connected to this device. Storm water drains cannot be connected to this device. The device is not 100% safe and should be used only to protect secondary rooms with no vital technical installations.
Pumping stations
4: Which method of backflow prevention has the following disadvantages: Highly sensitive to sand and solid objects in the water. In a backflow situation, it is not possible to use the sanitary facilities that are connected to this device. Storm water drains cannot be connected to this device. The device is not 100% safe and should be used only to protect secondary rooms with no vital technical installations.
Lifting stations
5: 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.
5: 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.
5: 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.
6: Who has the financial responsibility in the case of flooding in most countries?
The building owner and the building designers
6: Who has the financial responsibility in the case of flooding in most countries?
The government and the wastewater authorities
6: Who has the financial responsibility in the case of flooding in most countries?
The building designers and the contractors
7: Of the three anti-flooding systems, why is the lifting station the superior system?
It is located outside the building which means bad odour is never a problem
7: Of the three anti-flooding systems, why is the lifting station the superior system?
The storage volume is high and it is easy to assemble and install
7: Of the three anti-flooding systems, why is the lifting station the superior system?
It is pre-assembled and its location inside the building makes it easily accessible for service. Furthermore, it offers maximum backflow and flooding protection
8: Which three factors have increased the risk of flooding and back flow?
A higher frequency of rainfalls, increased length of rainfalls and more paved areas today than earlier.
8: Which three factors have increased the risk of flooding and back flow?
A higher frequency of rainfalls, unmaintained sewers and an increase in paved areas
8: Which three factors have increased the risk of flooding and back flow?
A higher frequency of rainfalls and buildings that are poorly equipped for increased amounts of water.