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Novel approach for the online and real-time evaluation of risk in Industrial WWTPs

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Variations in the organic load of industrial wastewaters constitute a major risk for wastewater treatment plant operation and its constitutive processes, especially for biological processes. The ability to prejudge the potential risks that could provoke loss of the biomass (in the case of biological treatment) and the degradation of treatment is a necessity to ensure reliable treatment processes and to respect discharge requirements of wastewaters. Online alert systems to identify influent characteristics that could harm the treatment process efficiency or integrity are therefore needed to assist treatment plant operators in making critical decisions regarding plant operation and to comply with increasingly stringent environmental regulation. This paper presents a new approach for the online and real-time risk evaluation based on parametric and non-parametric (UV-spectrophotometry) measurements: it uses fuzzy logic to evaluate the variability of wastewaters quality and then translates it in displayed green/orange/red lights. This approach has been evaluated on two industrial WWTPs.
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Document Type: Research Article

Publication date: 01 January 2008

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