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Energy Saving Using Jacked Aerators at Biddulph Sewage‐Treatment Works
Author(s) -
SODIPO B. O.,
GREENWOOD WENDY,
CLOUGH G. F. G.
Publication year - 1991
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.1991.tb00637.x
Subject(s) - aeration , effluent , sewage , activated sludge , environmental engineering , waste management , environmental science , sewage treatment , chemistry , engineering
A means of improving the energy efficiency of an existing mechanically aerated activated‐sludge system by mounting the existing aeration units on jacked platforms is described. The level of the platforms, and hence the immersion of the aerators, is automatically controlled to maintain a constant concentration of dissolved oxygen in the mixed liquor. Comparison of the controlled stream, in which there were two aerators, against an otherwise identical control stream showed energy savings of 20% and 13% respectively when the control involved both or only one aerator, without adverse effect on final effluent quality.