National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Comparison of aeration elements
Stříž, Michal ; Beňo, Zdeněk (referee) ; Pěček, Jan (advisor)
The content of the thesis is to compare the aeration elements used in the aeration tank for biological treatment of wastewater. In order to compare, the work contains description and explaination of: ? basic division of functions and some aeration systems, ? transfer of oxygen, ? the use of pure oxygen instead of air, ? placement of aeration elements into the activation tank. Since the aeration elements are plentiful, work is focused on the most widely used pneumatic and mechanical aeration systems.
Comparison of aeration elements
Stříž, Michal ; Beňo, Zdeněk (referee) ; Pěček, Jan (advisor)
The content of the thesis is to compare the aeration elements used in the aeration tank for biological treatment of wastewater. In order to compare, the work contains description and explaination of: ? basic division of functions and some aeration systems, ? transfer of oxygen, ? the use of pure oxygen instead of air, ? placement of aeration elements into the activation tank. Since the aeration elements are plentiful, work is focused on the most widely used pneumatic and mechanical aeration systems.
Near-exit coalescence – a so far unknown limit to microbubble smallness
Tesař, Václav ; Šonský, Jiří
Gas bubbles in a liquid are required in applications to be of the smallest possible bubble size. Authors studied microbubble formation using a high-speed camera and discovered that bubbles increase their volume near the aerator exits by mutual coalescence. This effect presents a limit to how small microbubbles can be produced. The discovered conjunction effects are very fast and this is probably the reason why they have so far escaped attention.

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