Erratum for “Design Graphs for Activated Sludge Process”
نویسندگان
چکیده
منابع مشابه
Model for nitrification in activated sludge process.
A model for the simulation of nitrification in activated sludge is presented and calculations are compared with experimental results from different sources. The role of protozoa and the influence of reactor type and of diurnal variations in flow and strength of the sewage are considered. Favorable conditions for nitrification are low rates of sludge wasting, high temperatures, plug-flow-type re...
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Activated Sludge Treatment is a biological wastewater treatment process which speeds up waste decomposition by adding Activated sludge into wastewater, and the mixture is aerated and agitated for a specified amount of time there by allowing the activated sludge to settle out by sedimentation and is disposed of (wasted) or reused (returned to the aeration tank). It is to everyone’s advantage for...
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An application of the extended Kalman filter for a nonlinear model of an activated sludge process (ASP), working in an alternating aerobic-anoxic phase medium, is proposed. The filter is used to estimate both the states and non-stationary disturbances, to better evaluate changes in operating conditions. It is to be pointed out that, according to the structure of the reduced nonlinear system, th...
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−−This work presents two stochastic optimization methods to perform the integrated synthesis and design of an activated sludge process. The process synthesis and design are carried out simultaneously with the control system design to obtain the most economical plant which satisfies the desired control system performance. The mathematical formulation of this objective translates the process supe...
متن کاملA nonlinear observer design for an activated sludge wastewater treatment process
This paper treats the problem of estimating simultaneously the state and the unknown inputs of a class of nonlinear discrete-time systems. An observer design method for nonlinear Lipschitz discrete-time systems is proposed. By assuming that the linear part of this class of systems is time-varying, the state estimation problem of nonlinear system is transformed into a state estimation problem fo...
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ژورنال
عنوان ژورنال: Journal of the Environmental Engineering Division
سال: 1976
ISSN: 0090-3914,2690-2435
DOI: 10.1061/jeegav.0000489