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Media type:
E-Article
Title:
Oxygen Aeration at Newton Creek
Contributor:
Nash, Norman;
Krasnoff, Paul J.;
Pressman, William B.;
Brenner, Richard C.
Published:
Water Pollution Control Federation, 1977
Published in:
Journal (Water Pollution Control Federation), 49 (1977) 3, Seite 388-400
Language:
English
ISSN:
0043-1303
Origination:
Footnote:
Description:
A 3-year test of oxygen aeration was performed at New York City's Newtown Creek treatment plant. The equipment included an oxygen generator backed up by liquid oxygen, submerged turbines and a covered aeration tank, and was designed for an average flow of 76 000 ${\rm m}^{3}/{\rm d}$ (20 mgd) and a biochemical oxygen demand loading of 18 900 kg/d (41 700 lb/day). During "non-filamentous" periods at flow rates up to design, 76 000 ${\rm m}^{3}/{\rm d}$, and biochemical oxygen demand loadings of 140 to 160 ${\rm kg}/{\rm m}^{3}$, effluent quality averaged 22 mg/l of biochemical oxygen demand and 20 mg/l of suspended solids, for removal efficiencies of 90 percent of biochemical oxygen demand and 85 percent of suspended solids. The oxygen supplied averaged 1.0 kg/kg biochemical oxygen demand removed at or above the design flow rate, and ranged from 1.2 to 1.6 at flows below design. When operated at the design biochemical oxygen demand loading rate and above, the power requirement averaged 0.95 kWh/kg biochemical oxygen demand removed.