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TOC analyzer for airports

During winter, de-icing processes at airports necessitate storm water and de-icing water management. LAR 's QuickTOCairport is an application-specific online total organic carbon (TOC) analyzer that meets the tough requirements airport applications.

The TOC analyzer QuickTOCairport

The TOC analyzer QuickTOCairport is optimally suitable for water management tasks at airports

During winter, de-icing processes at airports necessitate storm water and de-icing water management. Especially due to adhesive (sticky) substances, strongly fluctuating concentrations and a lot of chemicals, the monitoring systems itself must be tailor-made to fight this water analysis challenge.

LAR 's QuickTOCairport is an application-specific online total organic carbon (TOC) analyzer that meets these tough requirements. The sample is injected via a robot-driven injection system to the oven – without any pre-treatment or dilution. Thus, the amount of wetted surfaces is reduced to a minimum, preventing carry-over and memory effects caused by absorption and adsorption. In the oven, the sample is combusted at 1200°C. Based on the high temperature, the sample's organic content is completely oxidized to CO2. Hence, operators do not need expensive oxidation promoting catalysts. Moreover, due to its process control, the TOC analyzer handles high salt concentrations without clogging. Downstream of the oven, the produced CO2 is measured by a NDIR, determining the TOC value. Using the automatic ranging feature, the QuickTOCairport reliably determines the TOC from the lowest to the highest ranges in less than three minutes.

The QuickTOCairport is operated by a touch-screen display. Many modules, as the multi-stream-option for the measurement of up to 6 streams or the simultaneous measurement of the chemical oxygen demand (COD) provides tailor-made solutions for monitoring and optimization of airport water applications. Thus, airport operators are able to monitor the TOC fast, accurately and easily – even in busy winter season.

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