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Automatic Control of Flocculation Processes

by Anders O. Wistrom,
Jay A. Farrell,



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

A control system for flocculation, used in water and wastewater treatment operations is being developed. The approach is based on detailed particle size distribution measurements of influent and effluent streams and dynamic models for the particle size distribution. The models are developed herein based on a population balance approach. Initial experimental work is underway to verify the validity of the particle size distribution dynamic models. The ultimate objective is to use detailed particle size distribution measurements and the dynamic models of particle flocculation to analyze and develop control laws for the flocculation process. The control laws will by necessity be adaptive due to the difficulty in identifying all process model parameters theoretically and due to the changing process dynamics. Identification algorithms are presented herein.

Subject Headings: Particle size distribution | Dynamic models | Flocculation | Water treatment | Control systems | Wastewater management | Effluents

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