Detection of total organic peak loads

Production facilities have low waste water discharge levels, mostly within the range of 1,000 ppm TOC. In the case of a disturbance, the range could very well reach a level of up to 50,000 ppm.

Detection of TOC peak loads, Hydrocarbon Engineering
TOC Analyzer QuickTOCultra

Total Organic Carbon Analyzer QuickTOCultra - especially for the rough stuff

Sky high – Fast detection of total organic carbon peak loads

Normally, production facilities have low waste water discharge levels, mostly within the range of 1,000 ppm TOC (total organic carbon). However, occasionally the installation can suffer failures or process disturbances take place. In this case, the range could very well reach a level of up to 50,000 ppm. If these go unnoticed, besides the expenses of waste water treatment processing, energy supply, taxes and legal charges, valuable base chemicals and end products may be lost. For safe and efficient plant operation, the online TOC analysis is recommended, if not regulated.

LAR's online total organic carbon analyzer QuickTOCultra uses the ultra high temperature combustion method. At the temperature of 1200°C, the samples' compounds – no matter whether the organics are in a dissolved, mixed, oily, particulate or volatile state – are completely oxidized. There is no sample preparation necessary such as filtration or dilution. As a result, operators save expenses for sample conditioning systems and oxidation promoting catalysts. Downstream of the oven, the CO2 gas formed is measured by a NDIR detector, which determines the TOC content. The analysers' innovative design enables the measurement of total organic carbon in water in less than 3 minutes. In the case of an exceeding of alarm threshold, operators may rapidly take countermeasures such as redirection of highly contaminated water streams to buffer tanks for peak shaving.

The QuickTOCultra is able to measure up to six sample streams. Thus, operators save expenses for several TOC analyzers.

LAR's TOC analyzer is the optimal solution for reliable online monitoring of industrial waste water. The innovative design as well as fast measurement convinces companies all over the world. Worldwide, thousands of LAR's analyzers are successfully in operation.

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Benjamin Mattejiet
Manager Marketing Communication

+49 30 27 89 58-59


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The total organic carbon (TOC) is one of the most important sum parameters in the assessment of the organic pollution of water. Since it includes all carbon compounds as one mass, it is exactly defined and an absolute quantity. Therefore, it may be determined directly.

Read more about TOC measurement methods.

Total organic carbon analyzers of LAR Process Analysers AG

The chemical oxygen demand (COD) indicates the amount of oxygen which is needed for the oxidation of all organic substances in water and is thus an important indicator for water analysis. It is considered in the planning and controlling of treatment, as well as assessing its efficiency, thus forming the basis for the calculation of waste water charges.

The COD can be determined in laboratory or online, whereby these methods significantly differ in duration and consumables used.

Read more about COD measurement methods.

COD analyzers of LAR Process Analysers AG

The biochemical oxygen demand (BOD) indicates the amount of oxygen which is needed for the biological degradation of organic substances in water.

Since the generally used BOD5 excludes the nitrification part of the process, this parameter is poorly suited for the control of waste water treatment plants. Alternatively, the total BOD is well-suited, due to the determination of the nitrogen as well as the carbonaceous part of biological degradation.

Read more about the online measurement of BOD.

Toxicity is described as the direct harmful effect of a substance on organisms. These effects can already occur at low concentraions of toxic substances and are dependent on the incubation period and the dosage.

Some test methods that are available on the market can detect toxicity by using fish, daphnia, molluscs, algae or luminous bacteria and testing whether a water sample has a toxic effect on the organisms. They do not, however, identify exactly which toxins are present.

Read more about online toxicity measurements.

BOD / toxicity analyzers of LAR Process Analysers AG

The total nitrogen bound (TNb) shows the pollution of water caused by nitrogen compounds. Nitrogen may be present as ammonia, ammonium salts, nitrites, nitrates and organic nitrogen compounds.

In contrast to single measurements of the above-mentioned components, the TNb determination contains all these substances in a single analysis process.

Read more about online TNb measurements.

The total phosphorus (TP) is a sum parameter that shows the organic and inorganic phosphorus compounds in water. Phosphorus is an essential nutrient for humans as well as flora and fauna. However, the substance – depending on its concentration– may cause serious damage.

Read more about online TP measurements.

TN TP analyzer of LAR Process Analysers AG