Abstract
Optimal allocation scheme of feeding wastewater into aeration vessels is studied. So far a very few works have quantitatively evaluated advantages (or disadvantages) of modifing feeding scheme of inlet wastewater despite the long and practical use of step aeration processes. The evaluation herein is made based on the two criteria, i.e., “time average treatment efficiency” and “stability of time variation of effluent quality”.
The result implies the followings :
(1) The conventional way of step feeding is not always advantageous in terms of the above two criteria.
(2) The performance of aeration vessels is improved only by the optimized feeding scheme. Needed now is to accumulate practical data to ascertain the present numerical analysis.
