Sky high - Fast Detection of Peak Loads of TOC and COD in Industrial Waste Water

Lost water can never be retrieved. Especially in many industries the costs of discharging waste water can be sky high. Besides the expenses of waste water treatment processing, energy supply, taxes and legal charges, valueable base chemicals and end products may be lost. Online analyser for COD (Chemical Oxygen Demand) or TOC (Total Organic Carbon) can be used to monitor the plant's effluent streams. They are able to rapidly respond to any changes of loads, no matter whether the organics are in a dissolved, mixed, oily, particulate or volatile state. Using innovative online analysers, operators save enormous cost.

Whilst normal TOC levels can be between 200 and 1,000 ppm, product spills may reach levels up to 50,000 ppm. At such high ranges the oxidation strength of a TOC analyser must be outstanding. However, many TOC analysers are not able to measure ranges that high and therefore need to pre-dilute the samples first. The drawback of pre-dilution is that many types of waste water, e.g. particulate, volatile or oily, cannot be accurately diluted. LAR's QuickTOCultra does not use any sample pre-conditioning or dilution techniques. Moreover, it is capable of handling waste water with a high load of suspended solids and can rapidly respond to level changes up to 50,000 ppm. An advanced robot driven injection technique, in combination with a non catalytic 1,200°C thermal oxidation, enables a complete oxidation of all organics – without the use of catalysts.

LAR's (Germany) analysis technique is successfully in use in many industrial applications. Using the same approach, the QuickCODultra determines the oxygen demand within minutes. Additionally, LAR offers a variety of analysers for the detection of toxicity, TNb, TP, TOD and BOD. They can handle the most complex sample compositions with low maintenance costs. Furthermore, LAR's analysers are characterised by high reproducabiltiy and analytical accuracy. Thus, the analysers are the optimal solution for reliable online monitoring of industrial waste water.