Test your knowledge

Question 1 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 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.

Anti-flooding valves

Pumping stations

Lifting stations

Question 3 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 4 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 5 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 6 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 7 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 8 of 8

Intermediate

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

Inspection wells are difficult to maintain and the initial cost of the pumping pit is high

Many gravitation pipes have to be installed outside the building and a great deal of excavation work is needed.

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

You can find the answer here >

1: Which treatment is necessary for storm water?

It has to go through a sand pressure

You can find the answer here >

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

You can find the answer here >

Pumping stations

You can find the answer here >

Lifting stations

3: 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.

3: 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

You can find the answer here >

3: 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.

You can find the answer here >

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

You can find the answer here >

4: What is grey wastewater?

Water which has not been affected by human influence

You can find the answer here >

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

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

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

Rainwater, wastewater, storm water and drainage water

You can find the answer here >

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

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

You can find the answer here >

6: 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

You can find the answer here >

6: 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

You can find the answer here >

6: 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

7: 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

You can find the answer here >

Lifting stations

You can find the answer here >

8: 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

You can find the answer here >

8: 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

You can find the answer here >

8: 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.