What is COD in Wastewater?
How is COD measured?
At the GPC Clear solutions Laboratory, Our trained laboratory technicians test for Chemical Oxygen Demand using a spectrophotometer. The method involves using a strong oxidizing chemical, potassium dichromate Cr2O72-, to oxidize the organic matter in solution to carbon dioxide and water under acidic conditions. Often, the test also involves a silver compound to encourage oxidation of certain organic compounds and mercury to reduce the interference from oxidation of chloride ions. The sample is then digested for approximately 2 hours at 150°C. The amount of oxygen required is calculated from the quantity of chemical oxidant consumed.
Why is the reduction of COD important?
Key Advantages of COD Removal
- To keep your company’s trade effluent discharge in consent with the local water authorities MOGDEN formula.
- Avoid breaching discharge consents resulting in heavy fines.
- Reducing your company’s environmental impact.
How To Remove COD from Wastewater – The Solution
The use of GPC Clear Solutions coagulants and flocculants will remove most of the suspended solids from the effluent. All COD values associated with these solids will also be removed.
Any dissolved COD that is left will need to go forward for biological treatment.
To learn more about Flocculation -> Visit Here
To learn more about Coagulation -> Visit Here
Gpc Clear Solutions provide a FREE on-site assessment of your wastewater treatment requirements.
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