Regarding the COD parameter in water treatment testing
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The factory has a wastewater treatment system, and at the mixing tank stage before the wastewater enters the anaerobic tank, manual testing is required to measure the COD value of the wastewater; this process is not only cumbersome but also prone to errors. The concentration in the tank is within 10,000 mg/L, and the color is turbid. Is there a suitable solution for real-time online monitoring? ； Alternatively, there is a good approach for manually sampling and sending it to the laboratory, with an automated pipeline system for testing. I would be extremely grateful if an expert could provide a solution
For this solution, you can turn to relevant COD manufacturers to help with the design and implementation; companies such as Hashi and E+H will do, and domestic manufacturers are also capable of handling it.
If it is merely for process control, it is recommended to use a COD probe based on ultraviolet absorption for monitoring. Since the data is not intended for environmental protection authorities, high accuracy is not required; moreover, no toxic or harmful chemicals are needed, and maintenance is straightforward. In the case of laboratory testing, environmentally friendly methods are generally used, but such high COD values require appropriate dilution.