page_title: Aeration turbine
hierarchical_section_title: Aeration turbine
caption_attribution_description: Vzduch je modrým potrubím poháněn turbínou s elektrickým motorem. Trubky přihánějí vzduch do van aerační místnosti v odželezovně v úpravně vod v Káraném. Vzduch probublává tenkou vrstvičkou vody a zajišťuje tak přeměnu rozpuštěného trojmocného železa na dvojmocné a jeho vyvločkování. Vločky železa je pak možno následně zachytit pískovým filtrem. Při aeraci vody se též z vody odstraní různé plyny. Nová odželezovna artéské vody funguje v úpravně vody Káraný od roku 1978. Artéská voda je jímána ze 7 vrtů o hloubce 60-80 m východně od obce Káraný a násoskou (= vzduchotěsné potrubí dopravující vodu, díky podtlaku tvořenému vývěvou) přiváděny do odželezovny v úpravně vod Káraný. Tato voda pochází ze zvodně (= souvislá akumulace podzemní vody v propustném horizontu) cenomanských (= časová jednotka svrchní křídy vymezující období před 99,6-93,5 miliony let) pískovců o mocnosti 20-30 m překrytých vrstvou nepropustných slínovců. Označení artéská voda pochází z francouzské provincie Artois, kde byla obdobná voda čerpána mnichy kartuziánského řádu ve 12. století. Voda do Polabí přitéká propustnými pískovci shora od Ještědského hřbetu. Rychlost je však malá, stáří vody bylo odhadnuto na 14 000 let. Zdroje: Křivánek, Oldřich a Kněžek, Miroslav. 2001. Zdroje pitné vody v Káraném. Principy získávání vody v oblasti káranské vodárny. Pražské vodovody a kanalizace a.s. Wikipedie Ambrožová, Jana. 2007. Aplikovaná a technická hydrobiologie. VŠCHT
context_page_description: Aeration turbines are designed to aerate and mix fluids industrially. They are foremost used in brewing, pond aeration and sewage treatment plants.
  Aeration turbines are designed for mixing gases, usually air, with a liquid, usually water. They can serve additional purposes like destratification, agitator or pump.
  There are numerous design variations in use or newly entering the market. Most are centrifugal, where fluid enters at the axis and exits around the perimeter of the rotor. Aeration turbines can run open or in a housing. Some designs have bladed rotors which leads to more splashing and those need to run close to the surface, which is an obvious sign of lesser efficiency.
  Generally the performance efficiency of aeration turbines is very high, the space requirement is compact, both at high reliability and all those factors reduce operational cost.
  The use of aeration turbines in industry is still underdeveloped especially with waste water treatment. With raising population and the growing strain on clean water supplies such environmentally friendly solutions are becoming more important.
context_section_description: Aeration turbines are designed to aerate and mix fluids industrially.  They are foremost used in brewing, pond aeration and sewage treatment plants.
  Aeration turbines are designed for mixing gases, usually air, with a liquid, usually water. They can serve additional purposes like destratification, agitator or pump.
  There are numerous design variations in use or newly entering the market.  Most are centrifugal, where fluid enters at the axis and exits around the perimeter of the rotor. Aeration turbines can run open or in a housing.  Some designs have bladed rotors which leads to more splashing and those need to run close to the surface, which is an obvious sign of lesser efficiency.
  Generally the performance efficiency of aeration turbines is very high, the space requirement is compact, both at high reliability and all those factors reduce operational cost.
  The use of aeration turbines in industry is still underdeveloped especially with waste water treatment.  With raising population and the growing strain on clean water supplies such environmentally friendly solutions are becoming more important.
  The technology allows a more decentralized approach to waste water treatment as sewage can be oxygenised at pumping stations for bacteria to start breaking down the sewage before it even arrives at centralized processing plants.
  Aeration turbines are more and more entering industry because of their significantly higher efficiency and reduced size of used gear compared to other methods of aeration. This means less investment into process infrastructure and substantial savings to both the overall cost but foremost running cost for electricity.
caption: Aeration turbine with pipeline
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