Aerator Performance in Natural Streams

by Shaw L. Yu, (A.M.ASCE), Asst. Res. Prof.; Water Resour. Res. Inst. and Dept. of Civ. and Envir. Engrg., Rutgers, The State Univ. of New Jersey, New Brunswick, NJ,

Serial Information: Journal of the Sanitary Engineering Division, 1970, Vol. 96, Issue 5, Pg. 1099-1114

Document Type: Journal Paper


Field tests of full-scale aeration equipment were conducted on the Passaic River in New Jersey. The results indicate that the oxygen transfer rates under standard conditions for aerators operating in a natural stream are significantly lower than those reported for similar aerators operating in waste treatment plants. For the observed flow range (83 cfs - 1670 cfs), the aerator efficiencies generally increase with increasing river discharge and velocity. With properly selected upstream and downstream sampling points, the use of a linear dissolved oxygen profile across the aerator seems to provide good estimate of the driving force of the aeration system. For the practical design of a river aeration system, a simple procedure is suggested to convert the commercially specified aerator efficiencies to those under actual conditions encountered in the river.

Subject Headings: Aeration | Rivers and streams | Waste treatment plants | Dissolved oxygen | Full-scale tests | Equipment and machinery | Oxygen transfer | River flow | New Jersey | United States

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