Underground Lifting Stations

An underground lifting station is an essential device for ensuring the evacuation of wastewater in situations where gravity drainage is not possible. Whether for individual houses, commercial buildings, or residential areas, this lift station handles water from multiple sources (toilets, kitchens, bathrooms) and discharges it to the sewer system or a septic tank.

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Type of water collected

  • Max. Head (Q0) (m)

  • Max. flow rate (m³/h)

  • Type of impeller

  • Number of pump(s)

  • Total tank volume (L)

  • Current

  • Type of activation

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  • Atmospheric visual of a Sanifos 610, underground lifting station, grey/black water buried at the bottom of a building.

      Sanifos 610

      The Sanifos 610 is a lifting station designed to lift grey water and black water from houses, commercial premises or a group of dwellings.

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    Discreet and efficient, the underground lifting station is installed underground, thus providing space savings and perfect integration into the environment.
     
    What is an underground lifting station?
     
    An underground lifting station is a device installed underground, designed to collect and pump wastewater from various sources (toilets, showers, washing machines) when this water cannot flow naturally to the drainage system due to low height or difficult location. This station is equipped with one or more pumps that ensure the lifting of water to the upper level, where it is then discharged into the public or private network. Underground lifting stations can handle more or less loaded waters, depending on the type of pump installed. They are available in different capacities, ranging from a few hundred to several thousand litres, to meet the needs of small homes as well as larger installations.
     
    Why opt for an underground lifting station?
     
    Choosing an underground lifting station offers many advantages, both for individuals and professionals. Here are some reasons why it is a preferred solution:
     
    1. Discretion and space saving: Since the station is installed underground, it is completely invisible and does not encroach on your property’s space. This preserves the aesthetic of your property while benefiting from an efficient drainage system.
    2. High treatment capacity: Underground lifting stations are designed to handle large volumes of wastewater. With tanks capable of holding several hundred to several thousand liters, they can manage the flows generated by individual houses or collective buildings.
    3. Adaptability to the type of wastewater: Depending on the type of water to be lifted (clear water, wastewater, or heavily loaded water), the station can be equipped with different pumps tailored to specific needs. You can thus choose a customized solution capable of effectively managing any type of liquid waste.
    4. Robustness and longevity: Built to withstand underground conditions, underground lifting stations are made from durable materials such as polyethylene, which ensures excellent resistance to corrosion and soil pressure, thus ensuring a prolonged lifespan of the device.
     
    How does an underground lifting station work?
    The operation of an underground lifting station is based on an automatic pumping system. Wastewater is collected in an underground tank, where it is temporarily stored. As soon as the water level reaches a certain threshold, a float or sensor system triggers the pump, which lifts the water to the discharge point.
     
    The pumps installed in these stations are designed to handle clear water, slightly loaded water, or wastewater containing solid materials. There are vortex or grinder pumps, depending on the type of waste to be processed. The lifting flow rate and discharge height vary according to the power of the chosen pump, allowing the system to be adapted to each terrain configuration.
     
    How to choose your underground lifting station?
    Choosing the right underground lifting station depends on several essential criteria. Here are the main elements to consider to ensure a solution tailored to your needs:
     
    1. Type of water to be lifted: The first step is to determine what type of water needs to be lifted. Is it wastewater, grey water, or rainwater? Depending on the type of water, you will need to choose a station with an appropriate pump (grinder wheel, vortex wheel, etc.).
    2. Tank capacity: The storage capacity of the tank varies by model, ranging from a few hundred to several thousand litres. It is important to select a station with a sufficiently large tank to avoid the pump triggering too frequently. The larger the tank volume, the less the pump will need to operate, which will extend its lifespan.
    3. Discharge height: The height criterion is essential for selecting the right pump. You need to calculate the height difference between the underground station and the discharge point to ensure the pump can lift the water over this distance without issues. Each pump has a specific discharge height capacity that must match your installation.
    4. Pump flow rate: The flow rate of the pump is another crucial factor. It determines the amount of water the station can discharge over a given period. If you have a home with several fixtures generating wastewater simultaneously, it is essential to choose a pump with a sufficient flow rate to avoid any overflow risk.
    5. Price and installation costs: The price of an underground lifting station varies based on its capacity, the power of its pump, and the included accessories. While it may be tempting to opt for a low-cost solution, it is important to prioritize quality and performance to avoid high maintenance costs in the long term.
     
    The underground lifting station is the ideal solution for lifting wastewater in areas where gravitational flow is impossible. Thanks to its efficient pumps, its treatment capacity of several litres, and its discretion once installed underground, it offers a durable and reliable solution for all installations, whether residential or professional. When choosing your lifting station, consider the nature of the water to be treated, the lifting height, as well as the capacity and flow rate of the pump to ensure optimal operation.
    FAQs

    Frequently Asked Questions

    • It is useful when the station must remain outside the building, below ground, or concealed to preserve usable floor space and the appearance of the property.

    • Yes, an underground lifting station can handle both grey water and black water, provided it is designed and equipped for the intended application. Grey water from showers, sinks, kitchens, and washing machines can be handled by a suitable wastewater pump. Black water from toilets requires a pump designed for solids, typically with a vortex or macerating system to prevent blockages. Select the lifting station according to the wastewater type, solids content, flow rate, and lifting height.

    • Check groundwater, soil stability, frost exposure, traffic or loading above the tank, access for maintenance, inlet and discharge levels, ventilation, and the need for extensions or covers.

    • Consider the number of users, connected fixtures, expected inflow, pump cycle frequency, available excavation space, and the consequences of a temporary power or pump interruption. The selected volume should be confirmed by the project designer.

    • Depending on the model, activation may use floats, pressure systems, radar, or another sensor arrangement. The control system should be selected and installed according to the station specification.

    • Provide safe access to the cover, control equipment, alarms, isolation valves, and pumps. The installation should allow the pump to be inspected or removed without unnecessary excavation.

    • It is useful when the station must remain outside the building, below ground, or concealed to preserve usable floor space and the appearance of the property.

    • Consider the number of users, connected fixtures, expected inflow, pump cycle frequency, available excavation space, and the consequences of a temporary power or pump interruption. The selected volume should be confirmed by the project designer.

    • Yes, an underground lifting station can handle both grey water and black water, provided it is designed and equipped for the intended application. Grey water from showers, sinks, kitchens, and washing machines can be handled by a suitable wastewater pump. Black water from toilets requires a pump designed for solids, typically with a vortex or macerating system to prevent blockages. Select the lifting station according to the wastewater type, solids content, flow rate, and lifting height.

    • Depending on the model, activation may use floats, pressure systems, radar, or another sensor arrangement. The control system should be selected and installed according to the station specification.

    • Check groundwater, soil stability, frost exposure, traffic or loading above the tank, access for maintenance, inlet and discharge levels, ventilation, and the need for extensions or covers.

    • Provide safe access to the cover, control equipment, alarms, isolation valves, and pumps. The installation should allow the pump to be inspected or removed without unnecessary excavation.

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