Question 1 of 8
Intermediate

What is parallel operation?

Question 2 of 8
Intermediate

Why is it important that the distance between the start and stop level is not too long?

Question 3 of 8
Intermediate

What are the benefits of a pumping station with a separate valve chamber?

Question 4 of 8
Intermediate

What are the main virtues of the S-tube® impeller?

Question 5 of 8
Intermediate

What is the purpose of the start level sensor?

Question 6 of 8
Intermediate

What is one of the main challenges facing utility companies today in relation to transportation of wastewater?

Question 7 of 8
Intermediate

Can a sewage pump handle all types of wastewater?

Question 8 of 8
Intermediate

What is the main disadvantage of over-dimensioning a wastewater pit?

Question 8 of 8
Intermediate

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1: What is parallel operation?
When two or more pump stations are operating at the same time.
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1: What is parallel operation?
When two or more pumps operate side by side simultaneously.
1: What is parallel operation?
When one pump is pumping into another pump and they are operating at the same time.
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2: Why is it important that the distance between the start and stop level is not too long?
If the distance is too long, the contractor shall dig too deep in the ground for the pump station.
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2: Why is it important that the distance between the start and stop level is not too long?
If the distance is too long, it might require longer motor cable for the pump due to the depth of the pump station.
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2: Why is it important that the distance between the start and stop level is not too long?
If the distance is too long it reduces the number of cycles, which may cause sedimentation because the water stays in the pit too long.
3: What are the benefits of a pumping station with a separate valve chamber?
It allows service and maintenance on the valves to be carried out without human interaction with the pit itself.
3: What are the benefits of a pumping station with a separate valve chamber?
The pump station do not need to be that deep, because now the valves are not in the chamber with the wastewater.
3: What are the benefits of a pumping station with a separate valve chamber?
There is no need for an intermediate deck in the pump station for the people there shall service or maintain the valves.
4: What are the main virtues of the S-tube® impeller?
It offers both excellent efficiency and large free passage.
4: What are the main virtues of the S-tube® impeller?
The S-tube® impeller is available in both cast iron and stainless steel.
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4: What are the main virtues of the S-tube® impeller?
The S-tube® impeller do not generate vibrations resulting in longer lifetime on shaft seals and bearings.
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5: What is the purpose of the start level sensor?
It will send an alarm when the water reaches this level and the pump do not start.
5: What is the purpose of the start level sensor?
It will stop the pump when the water level is lowered to below this level after a pump start.
5: What is the purpose of the start level sensor?
It activates the pump when the water reaches this level.
6: What is one of the main challenges facing utility companies today in relation to transportation of wastewater?
The wastewater is increasing more and more due to leakage in the discharge pipes and thereby infiltration of ground water.
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6: What is one of the main challenges facing utility companies today in relation to transportation of wastewater?
Lower water consumption has changed the composition of wastewater, which now has a higher proportion of dry solid content than before.
6: What is one of the main challenges facing utility companies today in relation to transportation of wastewater?
The wastewater pumps need bigger motors because the discharge pipes from the pump stations are getting longer in order to avoid an additional intermediate pump station.
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7: Can a sewage pump handle all types of wastewater?
Yes if the pH value is within 4 – 9 and max. dry content 3 to 5%.
7: Can a sewage pump handle all types of wastewater?
Yes with solids up to 100 mm (4”) and max. dry content 3 to 5%.
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7: Can a sewage pump handle all types of wastewater?
Yes if gravels and stones are max 100 mm (4”).
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8: What is the main disadvantage of over-dimensioning a wastewater pit?
Unnecessary investment in the larger civil work.
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8: What is the main disadvantage of over-dimensioning a wastewater pit?
Too big distance between the pumps with two or more pumps installed.
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8: What is the main disadvantage of over-dimensioning a wastewater pit?
The wastewater stays in the pit too long, which leads to sedimentation.