Abstract
The Spectral Absorption Coefficient (SAC) is an easy detectable sum parameter, giving information about the organic load in wastewater. The SAC 254 measurement is done at 254nm, implying parameters like COD (chemical oxygen demand), BOD (biochemical oxygen demand) and TOC (total organic carbon).Evaluation of the current state of technique revealed that SAC 254 probes, primarily used for wastewater determination, show significant defects in terms of mobility, accuracy of measurement and costs.Thus a reliable in-situ SAC 254 measurement system, including a remote-transmission of the measured data, was developed. Additional problems within the scope of optical measurement of parameters in wastewater, like contamination of the optical path, calibration or maintenance, have been successfully solved by a newly developed procedure.
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