1
What makes the Grundfos MULTILIFT easy to install?
2
What are the approaches that can reduce hydrostatic pressure on your building?
3
What does a Grundfos MULTILIFT protect against?
4
Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?
5
When is it ideal to use a lifting station as a pressurised system for wastewater removal in commercial buildings?
6
Why can it be a challenge to install a pumping pit outside a building when removing grey or black wastewater from below sewage level?
Test results
Congratulations. You have passed the test and completed the Wastewater in commercial buildings
Achieved badges:
01.
Q: What makes the Grundfos MULTILIFT easy to install?
A: You only need to set the following in the controller: 1) the maximum number of starts/stops of the pumps and 2) the level of the high water level alarm in the controller.
01.
Q: What makes the Grundfos MULTILIFT easy to install?
A: The system comes pre-assembled with a freely adjustable inlet and many other installer benefits
01.
Q: What makes the Grundfos MULTILIFT easy to install?
A: The system comes pre-assembled and all settings in the controller are set from the factory.
02.
Q: What are the approaches that can reduce hydrostatic pressure on your building?
A: Constructing a robust foundation, anchoring the building to the underground, or installing a drainage system – or all three in some cases
02.
Q: What are the approaches that can reduce hydrostatic pressure on your building?
A: There is no need to reduce the hydrostatic pressure as it adapts automatically to the weight of the building.
02.
Q: What are the approaches that can reduce hydrostatic pressure on your building?
A: Using the help of the local water supply company to once a year pump away the rising ground water around the building.
03.
Q: What does a Grundfos MULTILIFT protect against?
A: Flooding of cooling towers
03.
Q: What does a Grundfos MULTILIFT protect against?
A: Too high concentration of faecal matters in the wastewater
03.
Q: What does a Grundfos MULTILIFT protect against?
A: Backflow and basement flooding
04.
Q: Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?
A: No
04.
Q: Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?
A: Yes
04.
Q: Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?
A: Could be necessary if the groundwater level is expected to rise
05.
Q: When is it ideal to use a lifting station as a pressurised system for wastewater removal in commercial buildings?
A: When sanitary appliances are installed in the basement of an existing building, when space outside the building is limited or when excavation conditions are difficult.
05.
Q: When is it ideal to use a lifting station as a pressurised system for wastewater removal in commercial buildings?
A: When there is a need to remove black and grey wastewater, drainage water and surface water.
05.
Q: When is it ideal to use a lifting station as a pressurised system for wastewater removal in commercial buildings?
A: When storage of wastewater volumes is required over a longer period of time.
06.
Q: Why can it be a challenge to install a pumping pit outside a building when removing grey or black wastewater from below sewage level?
A: The weight and the shape of the pumping pit depend on the soil conditions, saturation of the soil and the local regulations. This makes planning difficult.
06.
Q: Why can it be a challenge to install a pumping pit outside a building when removing grey or black wastewater from below sewage level?
A: The pumps in an outside pumping pit cannot be controlled from a Building Management System.
06.
Q: Why can it be a challenge to install a pumping pit outside a building when removing grey or black wastewater from below sewage level?
A: A pumping pit installation calls for longer planning and installation time, more excavation time and higher excavation costs, as well as a higher initial investment.