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A fuzzy controller for the dissolved oxygen (DO) concentration of a wastewater bioreactor is presented. The controller is developed and tested based on simulations using first order plus dead time models obtained from experiments with an actual wastewater bioreactor. The controller uses feedback of the error in DO concentration and rate of change of the DO concentration and manipulates the valve position...
A new membrane module concept, the submerged hollow fibre membrane, has been widely accepted for the wastewater membrane bioreactor. This paper focuses on operational considerations and design aspect of the submerged hollow fibre membrane module. Experiments with both crossflow and 'dead-end' submerged systems have demonstrated that bubbling is effective in enhancing filtration performance, but the...
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