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Vraag 1 van 8

Gemiddeld

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

Vraag 2 van 8

Gemiddeld

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

The initial cost of the lifting station is lower compared with a pit and there are no gravitation pipes outside the building

The lifting station and the pipe system is maintenance-free

Vraag 3 van 8

Gemiddeld

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.

Vraag 4 van 8

Gemiddeld

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

Vraag 5 van 8

Gemiddeld

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

Vraag 6 van 8

Gemiddeld

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

Vraag 7 van 8

Gemiddeld

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

Vraag 8 van 8

Gemiddeld

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

Pumping stations

Lifting stations

Vraag 8 van 8

Gemiddeld

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Wat voor beoordeling geeft u deze cursus?

1: What is grey wastewater?

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

1: What is grey wastewater?

Water which is primarily discharged from toilets

U vindt het antwoord hier >

1: What is grey wastewater?

Water which has not been affected by human influence

U vindt het antwoord hier >

2: 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

U vindt het antwoord hier >

2: 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

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

The lifting station and the pipe system is maintenance-free

U vindt het antwoord hier >

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

U vindt het antwoord hier >

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.

U vindt het antwoord hier >

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

Pumping stations

U vindt het antwoord hier >

Lifting stations

U vindt het antwoord hier >

5: Which treatment is necessary for storm water?

It has to go through an oil/petrol separator

U vindt het antwoord hier >

5: Which treatment is necessary for storm water?

It has to go through a sand pressure

U vindt het antwoord hier >

5: Which treatment is necessary for storm water?

None – it is pumped directly to the recipient

6: 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

U vindt het antwoord hier >

Pumping stations

U vindt het antwoord hier >

Lifting stations

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

The building owner and the building designers

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

The government and the wastewater authorities

U vindt het antwoord hier >

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

The building designers and the contractors

U vindt het antwoord hier >

8: 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

U vindt het antwoord hier >

Pumping stations

Lifting stations

U vindt het antwoord hier >