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Reference project
Prestigious zoo successfully treats protein particles
Introduction.
Better view for the visitors, as well as the polar bears Aron and Friida
This time, our client is an Estonian zoo that was founded way back in 1939.
Their very first exhibited animal was a cute lynx cub named Illu who later became the zoo’s emblem animal. Our client holds one of the best collections of mountain goats and sheep in the world, as well as a great number of eagles and vultures. In addition, they also possess a fine collection of owl and crane species. The animal reproduction programme at the zoo has also been very successfull.
Overall, the zoo nowadays exhibits one of the most fascinating zoo collections in all of Northern Europe.
The problem.
The zoo began a renovation since it was in dire need of upgrading the facilities in order to ensure the best possible living conditions for the animals and to attract more visitors.
One of the main attractions at the zoo, the polar bears, were in particular need of a robust water treatment system. This is due to the heavy load of proteins and other organic material that accumulate in their water. A solution that continously removes these proteins continously would have two main advantages: it would lead to better living conditions for the polar bears, and visitors would get a better view through the underwater display glass that the zoo installed as a part of the renovation.
The solution.
In order to treat the water and remove particulate protein residues from it, skimmers were installed in the water treatment system. In addition, the zoo tasked Mellifiq with designing a solution that would enhance the protein removal process through particle coalescence. The protein particles can then be mechanically removed with ease.
We at Mellifiq delivered and commissioned an Ozonetech RENA Pro C6 system. At the request of the engineering team at the zoo, we tailored the systems controls so that the dissolved ozone concentrations would remain stable even at highly variable treatment flow rates. The treatment solution includes a cascaded flow-oxidation potential control with a HMI (Human-Machine Interface) touch panel. This feature is integrated into the advanced control system. The highly concentrated ozone gas is continuously injected into the skimmer gas-liquid injectors. Control signals from downstream flow meters and ORP sensors continuously measure the load and performance of the treatment system. Our delivery also included ambient ozone detectors, and a network of sound and light alarm stations in case of any skimmer ozone leaks.
Evaluation.
The zoo has—since its grand reopening in September 2017— successfully treated the polar bears’ swimming and drinking water with this unique treatment solution that was made specifically for this facility. The Ozonetech RENA Pro system has been very stable and provided very precise dissolved ozone concentrations.
Friida and Aron, the majestic polar bears at the zoo, now enjoy extremely pure water!
