VITOX
VITOX : A process for providing oxygen to a microbiological process such as sewage treatment. The heart of the process is a sub-surface mixer-oxygenator, developed by the British Oxygen Company for uprating the oxygenation capacity of overloaded sewage plants. It is now used as an integral design feature in new plants. The oxygen is introduced at the neck of a venturi and forms extremely fine bubbles. The process operates in open tanks, unlike the Unox process, which uses closed tanks. The equipment has been used also for dissolving carbon dioxide in water, for hardening it with lime
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