TOC and TN Analysis in Pulp and Paper Process Effluents

The pulp and paper industry generates large volumes of wastewater or effluents that need to be treated before they can be reused or released into natural waterways. According to the European Industrial Emissions Directive (IED) Best Available Techniques (BAT) have to be implemented within the EU for direct wastewater discharges from pulp, paper and card production). The BAT reference document (BREF) indicates that among other parameters, TOC (total organic carbon) and TNb (total bound nitrogen) are of growing importance. They need to be monitored on a daily or weekly basis. Furthermore, for economic and environmental reasons a preference for the parameter TOC instead of COD is given as it does not require the use of highly toxic compounds like dichromate (Cr VI) and mercury.

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