TOC process analysis
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SHIMADZU Excellence in Science

6. TOC process analysis 6.1. Continuous TOC/TN determination in wastewater treatment plants 6.2. TOC process analysis in the paper industry 6.3. Continuous TOC determination in the chemical industry 6.4. Continuous condensate monitoring using the TOC-4200 6.5. TOC-4200 with high sensitivity option 6.6. Continuous TOC determination on airports 6.8. TOC-4200 – measurement range up to 55,000 mg/L TOC 6.9. TOC-4200 – Carryover free TOC determination Laboratory analysis yields comprehensive and detailed results but, depending on circumstances, requires much time – time that is often not...

SHIMADZUExcellence in Science Application News NO. SCA-130-601 Sum parameter - Total Organic Carbon A uniform definition of wastewater does not yet exist. Wastewater is often used as a generic term for sludge, industrial wastewater and infiltration water. The contents of wastewater can vary widely depending on their origin, and a distinction is made between oxygen consuming compounds, nutrients, harmful substances and contaminants [1]. Wastewater treatment is carried out to eliminate wastewater contents and to restore the natural water quality. In municipal wastewater treatment plants,...

Application News ■ Sampling An analysis system is only as good as the sample preparation preceding it. Various sample preparation systems are available for the 4200 series, which can be optimally tuned to the individual application area. When sewage plant inlet and outlet are to be measured using the same instrument, the sample stream switcher is used. The sample enters the sample chamber via a strainer, where it is homogenized through a rotating knife before it is transferred to the instrument for analysis. This way, even samples containing large amounts of particulate matter can be...

Sum parameter – Total Organic Carbon TOC process analysis in the paper industry Paper manufacturing requires the use of water for various processes (suspension and transport of the pulp, cooling water, sieve and felt cleaning, system cleaning). Although the water circulation in paper mills has been systematically optimized in recent years due to water conservation, the paper industry still requires large quantities of fresh water for the production of paper. Wherever fresh water is consumed, large amounts of wastewater are also produced and these must be continuously monitored. The...

■ Sampling The sometimes highly fibrous wastewater can clog tubes and pipes. Various mechanisms and options are available to prevent clogging. The wastewater streams are sequentially transported to the analyzer using various valves. Following each sample feed to the analyzer, the valves and tubes are flushed with fresh water and an acid rinse. This prevents the formation of buildup in the valves. The acid rinse and water rinse are controlled by the TOC analyzer. After the sample has passed the respective valve, it enters the sample chamber via a strainer where it is homogenized using...

SHIMADZUExcellence in Science Application News NO. SCA-130-603 Sum parameter - Total Organic Carbon The high demand for many different products from the chemical industry and the required efficiency of the manufacturing processes often requires around-the-clock production. This results in huge amounts of wastewater. This water mostly originates from flowing water bodies. Industrial wastewaters must be pretreated before being discharged into public sewage treatment plants. Direct discharge into water bodies requires an extensive cleaning process. This is why many large companies or...

This can take place when measurement values are exceeded or can be applied permanently. In this case, the user specifies the desired dilution factor in the selected method. ■ Kit for high-salt samples For the continuous TOC determination of samples with high salt loads (> 10 g/L), Shimadzu has developed a salt kit. The combustion tube has a special shape and uses two different catalyst beads. This combination prevents crystallization that can lead to clogging of the system. ■ TOC-4200 in daily practice To verify the robustness and the reliability of the TOC-4200 during practical operation,...

SHIMADZUExcellence in Science Application News NO. SCA-130-604 Sum parameter - Total Organic Carbon The chemical and petrochemical industry uses superheated steam as energy carrier for the supply of energy needed in various thermal processing steps. Superheated steam is usually generated from ultrapure water, which prevents damage to the boilers. In order to use as little water as possible, the reflux condensate is redirected to the boiler. It is, therefore, important to ensure that the condensate is free from organic pollutants. ■ TOC determination in condensate The TOC parameter provides...

Numerous status and alarm signals simplify detection of exceeded limit levels and indicate the need for maintenance. A Modbus communication channel complements the conventional communication modes. An optional web browser gives access to the instrument from any networked computer. ■ Sampling For the 4200 series, various sample preparation systems are available, which can be optimally tuned to the individual application area. As condensates are homogeneous samples (in contrast to wastewater), an extra sample preparation step is not necessary. Two sampling systems are, therefore,...

SHIMADZU Excellence in Science Application News Sum parameter - Total Organic Carbon TOC-4200 -High Sensitivity Measurement Option NO. SCA-130-605 Ultra pure water is one of the most widely used reagents in industry and its quality is therefore of utmost importance in all industrial processes. Quality control has, for many years, been carried out and documented via conductivity measurements, which provide an assessment of the concentration of all inorganic species present in water. This detection method does not take organic pollutants into account, as they typically do not contribute to...