1
Why is it important that the distance between the start and stop level is not too long?
2
What are the benefits of a pumping station with a separate valve chamber?
3
What is drainage water?
4
What is the main disadvantage of over-dimensioning a wastewater pit?
5
How far below ground should the manifold – or the discharge pipe – be installed?
6
What is one of the main challenges facing utility companies today in relation to transportation of wastewater?
7
What might be the reason a wastewater pump solution requires a big free passage?
Test results
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 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.
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: What is the main disadvantage of over-dimensioning a wastewater pit?
A: Unnecessary investment in the larger civil work.
Q: What is the main disadvantage of over-dimensioning a wastewater pit?
A: Too big distance between the pumps with two or more pumps installed.
Q: What is the main disadvantage of over-dimensioning a wastewater pit?
A: The wastewater stays in the pit too long, which leads to sedimentation.
Q: How far below ground should the manifold – or the discharge pipe – be installed?
A: It depends on local regulation but typically 1 meter down.
Q: How far below ground should the manifold – or the discharge pipe – be installed?
A: Deep enough not to be damaged by roots from trees and bushes.
Q: How far below ground should the manifold – or the discharge pipe – be installed?
A: Not deeper than gravity to the recipient can be established with a gradient of 1 cm per meter. (0.032 ft per 3.28 ft).
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 might be the reason a wastewater pump solution requires a big free passage?
A: The big free passage will eliminate blocking of impeller.
Q: What might be the reason a wastewater pump solution requires a big free passage?
A: The need for high flow and/or a high content of solids.
Q: What might be the reason a wastewater pump solution requires a big free passage?
A: With the big free passage the pump can also pump wastewater contaminated with sand and gravel.
Q: What is parallel operation?
A: When two or more pump stations are operating at the same time.
Q: What is parallel operation?
A: When two or more pumps operate side by side simultaneously.
Q: What is parallel operation?
A: When one pump is pumping into another pump and they are operating at the same time.