Test your knowledge

Question 1 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.

Anti-flooding valves

Pumping stations

Lifting stations

Question 2 of 8

Intermediate

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

The storage volume is high and it is easy to assemble and install

It is pre-assembled and its location inside the building makes it easily accessible for service. Furthermore, it offers maximum backflow and flooding protection

Question 3 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.

Anti-flooding valves

Pumping stations

Lifting stations

Question 4 of 8

Intermediate

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

The building owner and the building designers

The government and the wastewater authorities

The building designers and the contractors

Question 5 of 8

Intermediate

What is grey wastewater?

Water, which is discharged from showers, sinks, washing machines, canteen kitchens etc.

Water which is primarily discharged from toilets

Water which has not been affected by human influence

Question 6 of 8

Intermediate

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.

A higher frequency of rainfalls, unmaintained sewers and an increase in paved areas

A higher frequency of rainfalls and buildings that are poorly equipped for increased amounts of water.

Question 7 of 8

Intermediate

Which treatment is necessary for storm water?

It has to go through an oil/petrol separator

It has to go through a sand pressure

None – it is pumped directly to the recipient

Question 8 of 8

Intermediate

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

Wastewater, storm water, drainage water and wastewater from parking areas

Rainwater, wastewater, storm water and drainage water

Wastewater, storm water, air-conditioning wastewater and wastewater from parking areas

Question 8 of 8

Intermediate

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1: 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

Pumping stations

Lifting stations

2: 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

2: 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

2: 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

3: 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

Pumping stations

Lifting stations

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

The building owner and the building designers

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

The government and the wastewater authorities

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

The building designers and the contractors

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: 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.

6: 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

6: 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.

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

Wastewater, storm water, drainage water and wastewater from parking areas

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

Rainwater, wastewater, storm water and drainage water

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

Wastewater, storm water, air-conditioning wastewater and wastewater from parking areas