EPD rainwater pumping stations
Opt for environmentally-friendly technology
The EPD Rainwater Pumping Stations are located within rainwater sewer networks
EPD rainwater pump stations are used in stormwater drainage networks to transport rainwater and meltwater over specific distances and heights within a planned timeframe. Water flows through the pressure pipeline to the expansion well, gravity or pressure collectors, and other receivers.
Table of contents
Benefits of use Application Types of pumping stations Construction and installation
EPD rainwater pump stations are used in stormwater drainage networks to transport rainwater and meltwater over specific distances and heights within a planned timeframe. Water flows through the pressure pipeline to the expansion well, gravity or pressure collectors, and other receivers.
Benefits of use
Solution to the problem of deep collector placement – pump stations allow for shallower installation depths by using pressure collectors.
Reduced flood risk – pump stations control the flow of rainwater and efficiently direct it to the receiver thanks to high-performance pumps.
Flexible installation – EPD pump stations can be installed both in green areas and on roadways.
Building protection – they safeguard against damage caused by rainwater.
Easy and cost-effective operation – based on proven solutions, which minimise the risk of failure.
Tailored to your needs – optimal pump selection ensures high efficiency and appropriate performance.
Application
EPD rainwater pump stations are particularly useful in cases of unfavourable terrain or challenging ground and water conditions, where it is impossible to install the collector deeper or when the receiver is located at a significant distance.
EPD rainwater pump stations are particularly useful in cases of unfavourable terrain or challenging ground and water conditions, where it is impossible to install the collector deeper or when the receiver is located at a significant distance.
Types of pumping stations
What are the types of pump operations used in EPD pumping stations?
- Alternate operation – each pump operates at the total capacity of the pumping station at the specified lifting height. In each cycle, one pump operates. The pumps serve as a reserve for each other.
- Parallel operation – a system involving the simultaneous operation of two pumps, which together provide the total capacity of the pumping station at the specified lifting height.
Standard pump operation systems used in EPD rainwater pump stations:
- 1+1 – the pumping station contains two pumps in an alternate operating arrangement.
- 2+0 – the pumping station contains two pumps operating in parallel.
- 2+1 – the pumping station contains three pumps; two operate in parallel, providing the total output of the pumping station, while the third acts as the reserve.
Pumping station
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Sanitary sewage and rainwater pumping stations
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Construction and installation
In EPD pumping stations, submersible pumps with an IP68 protection rating are used, designed to operate under flooding conditions. The choice of pump impeller design depends on the type of medium being pumped, the internal piping diameter of the pumping station, and operational parameters, i.e., the pumping station’s discharge and lifting height.
We distinguish two main types of pump impellers used in rainwater pumping stations:
- Open (Vortex) impeller – the vane impeller rotates in a horizontal position, creating a centrifugal force that directs the rainwater towards the discharge nozzle. The medium does not flow directly through the impeller structure, but it serves only to provide the driving force for transporting the rainwater. This type of impeller is characterised by a large free passage, making the system resistant to potential contamination.
- Channel impeller – the medium flows directly through the impeller structure. It is characterised by high efficiency and is dedicated to transporting large volumes of rainwater.
Pumping station body
The body of a rainwater pumping station can be made from various materials, such as concrete, reinforced concrete, polymer concrete, or HDPE. The diameter of the body is adapted to the intensity of rainwater inflow, the size of the pumps, and the diameter of the hydraulic equipment. The body of the device also acts as a rainwater intake chamber, and its size must provide sufficient retention capacity.
To install the pump station on a roadway, the body must be appropriately designed for strength. The cover of the device is equipped with an opening with a manhole made of stainless steel, HDPE, or cast iron, depending on the intended use of the area. This opening allows easy access for operational and maintenance work. Passages through the body walls are made to be watertight.
There is an option to integrate the pumping station with a HYDROZONE tank or to use a DZB tank as the body of the pumping station.
Hydraulic-mechanical equipment
Coupling elbow (foot valve) connects the pump to the pressure pipeline, which discharges the medium to the pressure sewage network. In EPD pump stations, pressure pipelines are made of stainless steel. Check valve protects the pump station from backflow of the medium. EPD pump stations are equipped with ball valves and gate valves, which regulate the flow in the pressure pipes.
Closing the gate valve blocks the flow, allowing inspection and maintenance of the pump station. The gate valve can be operated by a handwheel in the pump station or by a spindle in a street box located outside. Guides position the pump on the coupling elbow, ensuring its connection to the pressure pipe. Pumps are lowered and raised using guides and stainless steel chains, with each pump having its own set.
Power and control system
The power and control switchboard is a key element of EPD pump stations. It automatically starts the pumps depending on the water level, which is measured by a hydrostatic probe. It is recommended to connect to the BUMERANG SMART system, which allows for remote monitoring and management of the pump station. The switchboard has a declaration of performance and a CE mark, confirming compliance with Directives 2014/35/EU, 2014/30/EU.
Basic functions of the switchboard
- control of pump operation: automatic or manual,
- timed activation of pumps in case of low inflow,
- measurement of rainwater levels,
- protection of pumps from running “dry”,
- optical and acoustic signalling of emergency states, with the option to disconnect the acoustic signal,
- possibility of blocking parallel operation of pumps,
- possibility of setting a time limit for pump operation,
- counting the operating time and number of pump activations,
- emergency control of pump operation using float sensors.
Additional equipment
EPD rainwater pump stations are equipped with:
- ventilation chimneys, ensuring gravitational air exchange in the pump station body,
- ladder with CE marking,
- maintenance platform (for Hzb > 6 m),
- deflector,
- handrail,
- flow meter
- rain sensor
- Bumerang Smart monitoring and management system.
