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Article title LOGICAL-DYNAMIC CONTROL OF BIOCHEMICAL PROCESSES OF WASTEWATER TREATMENT
Authors E.K. Grudyaeva, S.E. Dushin
Section SECTION V. AUTOMATION AND CONTROL
Month, Year 07, 2015 @en
Index UDC 681.54
DOI
Abstract Treatment control indicates the existing purification systems are used for a narrow contaminant concentrations range in wastewater source. The purpose of this study is the synthesis of the control system with logical-dynamic controller to remove contaminants in the wide range of concentrations. The controllable mathematical model of a two-zone bioreactor with a recycle and a return flow from an ultrafiltration membrane unit based on ASM1 is represented in this paper. The scheme of the biochemical reactions compounds interaction is designed. The quality indices of processes for the biological wastewater treatment control system are entered. The technique of parametrical setup of the regulator with flexible structure is devised on their basis. The logical-dynamic setting was performed for a wide range of pollutants, whose values are obtained by analysis of more the 20 treatment objects in Russia and the other countries. The subregulator setting ratio dependences on some substrate ranges are defined. According the developed model the computer model is built in Matlab/Simulink. Results of modeling show possibility of high- quality cleaning in the conditions of broad change of levels of entrance multicomponent pollution in the set invariable volume of the bioreactor. Practical relevance of the research is in using of the logical-dynamic regulator with optimum settings of parameters to allows providing admissible output concentration of ammonium, nitrates and COD on all operating modes of a control system.

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Keywords Wastewater; biological treatment; mathematical modeling; ASM1; control; logical-dynamic controller.
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