FIELD: construction.
SUBSTANCE: device comprises a double circular boom floating on water surface. The boom is closed at the bottom along the inner contour with a meshed bottom or electrodes, where electric current is supplied. The air-lift flow is formed in the space between the booms at the bottom. The air-lift flow captures fine protected items from upper levels of the water reservoir and sends them to fish discharge. Large protected items from the lower layers of water are separated from the water-receiving tract with the meshed bottom or electrodes. The water-intake flow at the inlet is vertical, directed at the bottom upwards and is perpendicular to the flow at the outlet. Water is discharged from the space inside the double circular boom.
EFFECT: invention provides for efficient protection of fish.
2 dwg
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