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SUEZ Water Technologies & Solutions designs and manufactures Sievers Total Organic Carbon (TOC) Analysers that enable near real-time reporting of organic carbon levels. Offering a variety of laboratory, on-line and portable analysers that cover a dynamic analytical range, these analysers provide stable and accurate data for treatment optimisation, quality control and regulatory compliance.
Traditional analytical tools used to determine the pollution degree of water and wastewater are lab-based tools that measure the oxygen demand required to oxidize contaminants. Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) are the traditional tools often utilised. BOD and COD measure the oxygen-depleting effects of waste contaminants. The exception to this standard is the measurement of Total Organic Carbon (TOC), which directly measures inorganic and organic carbon. Below is a summary of each parameter, what they measure, and general strengths and weaknesses.
BOD is an indicator of the fraction of organic matter that can be degraded by microorganisms, typically expressed as the amount (mg/L) of oxygen consumed over five days at 20°C. BOD includes the readily biodegradable organic carbon (carbonaceous or cBOD) and occasionally ammonia (nitrogenous or nBOD). cBOD is the primary driver of BOD and includes soluble, particulate, and colloidal organic carbon compounds.
Depending on the organic carbon technique employed, Inorganic Carbon (IC) is removed or measured. Measuring for both inorganic carbon and organic carbon will provide Total Carbon (TC).
The Sievers* InnovOx TOC Analysers with state-of-the-art supercritical water oxidation (SCWO) provides accurate measurement of the carbonaceous component of oxygen demand and supports correlation to these methods.
The advantages of measuring organic carbon with the Sievers InnovOx TOC Analyser include:
Water and wastewater samples contain a diverse set of organic contaminants. While COD, BOD, and TOC each provide information about the pollution degree of water and wastewater, only TOC provides a direct measure in minutes, allowing for process control and quick decision making. With the Sievers InnovOx TOC Analysers and SCWO technology, you can obtain accurate data without interference on process performance.
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