Tailor-made solutions for fish protection
We develop solutions that are both designed and implemented to be sustainable and long-lasting.
This starts with resource-saving manufacturing of our screens and screening machines, and continues with optimisation of structures for water abstraction projects, right through to comprehensive concepts for fish protection.
Technical options
HUBER solutions for fish protection
Optimal fish protection starts with the correct design of the structure and the screen concept. This also includes fish deterrent systems and specially shaped filter elements for belt screens with integrated fish return.
The primary goal of fish protection is to prevent fish from swimming into the intake structure in the first place. The prevailing flow conditions at the intake essentially influence the swimming behaviour of fish. The lower the approach velocity, the better the fish can swim away. It should therefore not be more than 0.5 metres per second. Furthermore, the angle of approach to the water intake and the bar spacing of the screen play an important role.
Fish deterrent systems
To keep fish out of water intake channels, fish deterrent systems are often installed as a behavioural barrier. These use electrical, optical or acoustic signals to scare fish away.
For this purpose, HUBER cooperates with world-renowned specialists and relies primarily on the gentle solution of stroboscopic (or flashing) lights. The system has been specially developed to be ultra-bright. It uses low-energy LEDs with lenses to intensify the light. The solution is both effective and cheap to run.
Fish return
If fish swim into the area of screens and screening machines, we rely on automatic return concepts. For the HUBER Band Screen DiscMax®, for example, we have developed special fish buckets that are installed on each screen element. In combination with suitable return channels, the fish buckets ensure that fish are gently guided out and back into their natural waters.
Our solutions help ensure that your water intake system meets regulatory requirements for fish protection, including the strict 316(b) regulation of the US Environmental Protection Agency's (EPA) Clean Water Act.
