What is drainage water?
Why is it important that the distance between the start and stop level is not too long?
What makes the S-tube® impeller virtually clog-free?
What are the main virtues of the S-tube® impeller?
Can a sewage pump handle all types of wastewater?
What is the purpose of the start level sensor?
What is one of the main challenges facing utility companies today in relation to transportation of wastewater?
What are the benefits of a pumping station with a separate valve chamber?
Test results
Congratulations. You have passed the test and completed the 18 - Wastewater transport
Achieved badges:
Q: What is drainage water?
A: Wastewater from parking areas, sidewalks and alike after a rainy weather.
Q: What is drainage water?
A: Wastewater without toilet waste or impurities like paper, diapers and textile fibres.
Q: What is drainage water?
A: Slightly polluted water from a bathroom where the water is running to the drain.
Q: Why is it important that the distance between the start and stop level is not too long?
A: If the distance is too long, the contractor shall dig too deep in the ground for the pump station.
Q: Why is it important that the distance between the start and stop level is not too long?
A: If the distance is too long, it might require longer motor cable for the pump due to the depth of the pump station.
Q: Why is it important that the distance between the start and stop level is not too long?
A: 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.
Q: What makes the S-tube® impeller virtually clog-free?
A: The excellent hydraulic efficiency and free passage.
Q: What makes the S-tube® impeller virtually clog-free?
A: The big free passage up to 160 mm (6.3”).
Q: What makes the S-tube® impeller virtually clog-free?
A: The S-tube® impeller has either a SmartTrim function or a replaceable neck ring to secure the right impeller clearance.
Q: What are the main virtues of the S-tube® impeller?
A: It offers both excellent efficiency and large free passage.
Q: What are the main virtues of the S-tube® impeller?
A: The S-tube® impeller is available in both cast iron and stainless steel.
Q: What are the main virtues of the S-tube® impeller?
A: The S-tube® impeller do not generate vibrations resulting in longer lifetime on shaft seals and bearings.
Q: Can a sewage pump handle all types of wastewater?
A: Yes if the pH value is within 4 – 9 and max. dry content 3 to 5%.
Q: Can a sewage pump handle all types of wastewater?
A: Yes with solids up to 100 mm (4”) and max. dry content 3 to 5%.
Q: Can a sewage pump handle all types of wastewater?
A: Yes if gravels and stones are max 100 mm (4”).
Q: What is the purpose of the start level sensor?
A: It will send an alarm when the water reaches this level and the pump do not start.
Q: What is the purpose of the start level sensor?
A: It will stop the pump when the water level is lowered to below this level after a pump start.
Q: What is the purpose of the start level sensor?
A: It activates the pump when the water reaches this level.
Q: What is one of the main challenges facing utility companies today in relation to transportation of wastewater?
A: The wastewater is increasing more and more due to leakage in the discharge pipes and thereby infiltration of ground water.
Q: What is one of the main challenges facing utility companies today in relation to transportation of wastewater?
A: Lower water consumption has changed the composition of wastewater, which now has a higher proportion of dry solid content than before.
Q: What is one of the main challenges facing utility companies today in relation to transportation of wastewater?
A: 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.
Q: What are the benefits of a pumping station with a separate valve chamber?
A: It allows service and maintenance on the valves to be carried out without human interaction with the pit itself.
Q: What are the benefits of a pumping station with a separate valve chamber?
A: The pump station do not need to be that deep, because now the valves are not in the chamber with the wastewater.
Q: What are the benefits of a pumping station with a separate valve chamber?
A: There is no need for an intermediate deck in the pump station for the people there shall service or maintain the valves.