Page 6 - Application Handbook - TOC
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Sum parameter Total Organic Carbon



                                         TOC – Determination in wastewater


                   SCA-130-102




            Wastewater is water that has been                   Sewage also includes  the liquids  that are
            contaminated by use. In terms of its                discharged    and   collected   from   waste
            composition, wastewater is not homogeneous          treatment and storage plants”.
            but as diverse as its possible sources.
                                                                This diversity of wastewaters should also be
                                                                taken into account during the analysis.
                                                                Wastewater can thus contain small amounts
                                                                of organic pollutants with little matrix, as well
                                                                as highly saline products with high amounts
                                                                of organic components.

                                                                ■ Example of wastewater measurement
                                                                Below, a strongly saline wastewater from the
                                                                chemical industry was analyzed. In addition
                                                                to various substances present in low
                                                                amounts, the wastewater mainly contained
                                                                high amounts of  phenolic substances

            According to the German Water Resources             originating from production processes.
            Act      (Wasserhaushaltsgesetz,       WHG)
            wastewater is defined as follows:

            “Wastewater is

            1)  water whose properties have  been
                changed    by    domestic,   commercial,
                agricultural  or other use and the  water
                (sewage) discharged with it during dry
                weather conditions as well as

            2)  the run-off and collected water (rainwater)
                from built-up or paved areas following
                precipitation.                                             Fig. Result of the wastewater
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