Chemical Oxygen Demand
Chemical Oxygen Demand (COD)
Chemical Oxygen Demand or COD is a measurement of the oxygen required to oxidize soluble and particulate organic matter in water.
HOW WE MEASURE COD IN REAL-TIME
We combine the data rich measurements from our advanced real-time UV-VIS sensors with our custom AI algorithms to develop site specific calibrations for our clients. These custom calibrations enable us to provide real-time detection of parameters, such as COD, that would traditionally be left to the laboratory.
Our Liquid Ai data analytics services provide ongoing calibration health monitoring to ensure the real-time COD results are as accurate and predictive of the lab as possible. The service enables continuous calibration improvements to be made as water quality composition changes or new contaminants are introduced. We ensure reliability and trust in the results, so our clients can make confident, informed decisions to improve their plants processes. The longer our systems are installed, the smarter and more insightful they become with our Liquid Ai service.
WHY IS IT IMPORTANT?
Chemical Oxygen Demand is an important water quality parameter because, similar to BOD, it provides an index to assess the effect discharged wastewater will have on the receiving environment. Higher COD levels mean a greater amount of oxidizable organic material in the sample, which will reduce dissolved oxygen (DO) levels. A reduction in DO can lead to anaerobic conditions, which is deleterious to higher aquatic life forms. The COD test is often used as an alternate to BOD due to shorter length of testing time.