Vislift UP
The Vislift UP enables fish migration in two directions where a barrier between two water table areas blocks the swimming route. The application area focuses mainly on locations near a polder outlet pumping station. The Vislift UP has a round shape, works according to the sluice principle and creates a continuous lure flow on the side of both water catchment areas.
Proven effective for almost all fish species
Based on real-time data, it can be demonstrated that the Vislift is effective for almost all fish species.
24/7 real-time data of fish and water
The built-in sensors monitor passing fish on quantity and species, and the water on water levels, water temperature, flow rate, pollution and blockages. Ecologists, water and level managers gain more insight into fish migration and the parameters of the water.
Automatic water management
Fish species migrate at different times under different conditions, with flow velocity in the fish passage being the most important parameter. The Vislift has a flow technique that controls the attraction flow rate of the fish passage.
Self-cleaning
The Vislift is self-cleaning: the device is periodically rinsed. The built-in sensors also detect blockages. When the cleaning cycle does not yield sufficient results, this is recognized and communicated to the user.
Plug-and-play in 48 hours
The Vislift is compact, structurally strong and almost universally applicable due to its patented round shape. Soil investigation and structural calculations are less relevant. This makes the installation of the Vislift many times more efficient and faster than traditional solutions. The Vislift can be installed and reinstalled at any location within 48 hours.
Also for polder - basin migration
The fish passage can be applied everywhere; even in places with little space and even for polder boezem migration. For this situation, a Vislift UP can be used.
24/7 Remote functionality
The fish passage can open and close
Adjustable pilot flow rate
Adjustable water saving in dry periods
Periodic cleaning cycle
Water parameters 24/7
Water levels
Flow rate
Temperature (°C)
Fish migration measurements 24/7
Fish movements
Fish species
Benefits Vislift UP
The unique shape of the basins, the dimensions of the swim gates, and the spacious central rest chamber ensure that the energy dissipation remains below 100 W/m3. This energy dissipation mainly occurs next to the swimming lines, allowing a wide variety of fish species to use the Vislift to swim past a barrier.
The processing flow rate varies from 25 to 45 l/s and can be expanded with an internal bypass that increases the attraction flow rate to 70 l/s. If the waterway is larger, the Vislift is equipped with an external bypass, increasing the detectability of the attraction flow.
In extremely dry periods, the water-saving function can reduce the minimal flow rate (per 24 hours) by allowing the Vislift to operate for only a few hours per day.
The Vislift is suitable for almost all fish species found in the Netherlands. The attraction flow rate within the fish passage is adjustable, self-regulating, and can be tailored to the migrating fish species' season and the fluctuating water level. This ultimately determines the migration efficiency.
Vislift UP 1500
Vislift for polder migration max gradient 1500mm
Specifications
Volume Vislift in operation
approx. 13000 liters (at a level difference of 1.5m)
Connection value
3FN/25A, equipped with automatic transmission
Monitoring wells
3 pieces, (diameter 110mm) for level sensors and water quality sensor
Swimming compartments
3 pieces, gathering spaces for autumn and spring migration directions
Spindle motor
2 pieces, operate 4 pieces of spindle slides for lock operation
Dish rack
For pilot stream pump, to keep large waste away from the pump is automatically cleaned
Automatic
cleaning system
Daily program to flush the Vislift
Fish counter with camera
Digital camera with lighting in waterproof housing equipped with automatic clean cycle (if automated version)
Waterparameters
For continuous measurement of water parameters:
Temperature
Water levels
Flow rate
Pilot current flow
Vis-safe screened pump standard equipped with maximum flow rate 250 m3/hour
Vislift UP 2000
Vislift for polder migration max gradient 2000mm
Specifications
Volume Vislift in operation
approx. 15500 liters (at a level difference of 2m)
Connection value
3FN/25A, equipped with automatic transmission
Monitoring wells
3 pieces, (diameter 110mm) for level sensors and water quality sensor
Swimming compartments
3 pieces, collection spaces for autumn and spring migration directions
Spindle motor
2 pieces, operate 4 pieces of spindle valves for lock operation
Dish rack
For pilot flow pump, to prevent large debris from the pump being automatically cleaned
Automatic
cleaning system
Daily program to flush the Vislift
Fish counter with camera
Digital camera with lighting in waterproof housing equipped with automatic clean cycle (if automated version)
Water parameters
For continuous measurement of water parameters:
Temperature
Water levels
Flow rate
Pilot flow rate
Visually safe screened pump standard executed with maximum flow rate 250 m3/hour
Vislift UP 2500
Vislift for polder migration max gradient 2500mm
Specifications
Volume Vislift in operation
approx. 18000 liters (at a level difference of 2.5m)
Connection value
3FN/25A, equipped with automatic transmission
Monitoring wells
3 pieces, (diameter 110mm) for level sensors and water quality sensor
Swimming compartments
3 pieces, collection spaces for autumn and spring migration directions
Spindle motor
2 pieces, operate 4 pieces of spindle valves for lock operation
Dish rack
For pilot flow pump, to prevent large debris from the pump being automatically cleaned
Automatic
cleaning system
Daily program to flush the Vislift
Fish counter with camera
Digital camera with lighting in waterproof housing equipped with automatic clean cycle (if automated version)
Water parameters
For continuous measurement of water parameters:
Temperature
Water levels
Flow rate
Pilot flow rate
Visually safe screened pump standard executed with maximum flow rate 250 m3/hour
Vislift UP 3000
Vislift for polder migration max gradient 3000mm
Specifications
Volume Vislift in operation
approx. 20500 liters (at a level difference of 3m)
Connection value
3FN/25A, equipped with automatic transmission
Monitoring wells
3 pieces, (diameter 110mm) for level sensors and water quality sensor
Swimming compartments
3 pieces, collection spaces for autumn and spring migration directions
Spindle motor
2 pieces, operate 4 pieces of spindle valves for lock operation
Dish rack
For pilot flow pump, to prevent large debris from the pump being automatically cleaned
Automatic
cleaning system
Daily program to flush the Vislift
Fish counter with camera
Digital camera with lighting in waterproof housing equipped with automatic clean cycle (if automated version)
Water parameters
For continuous measurement of water parameters:
Temperature
Water levels
Flow rate
Pilot flow rate
Visually safe screened pump standard executed with maximum flow rate 250 m3/hour
