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from
Brown Corpus
Oxygen transfer
One of the important aspects of this study was to determine the oxygen transfer relationships of the mechanical aerator.
Routine determinations were made for dissolved oxygen in the mixed liquor and for oxygen uptake rates.
The data given in Table 2, show the routine operation of the aerator.
The dissolved oxygen in the aeration unit was consistently high until January 29, 1961.
An extended cold spell caused ice to build up on the aerator which was mounted on a floating platform and caused the entire platform to sink lower in the water.
The added resistance to the rotor damaged the drive belts and reduced the oxygen transfer capacity.
It was approximately one month before the belt problem was noticed and corrected, but at no time was there a deficiency of dissolved oxygen.
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