COD REMOVAL

CHEMICAL OXYGEN DEMAND

What is Chemical Oxygen Demand?

How Can Chemical Oxygen Demand Affect You?

How We Can Help

What is Chemical Oxygen Demand?


COD or Chemical Oxygen Demand is a measurement of pollutants in a given body of liquid. It measures the total organic matter and is widely used for wastewater monitoring. COD consists of the amount of oxygen needed for the organic matter to be oxidized by a chemical oxidant. Chemical oxygen demand testing can be used to identify the amount of oxidation that will occur and the amount of organic matter in a water sample. 

A high quantity of COD can be damaging to it's environment and so is regulated by governing bodies such as EPA.

How Can Chemical Oxygen Demand Affect You?


High COD is common place in any water system with a large quantity of organic matter such as human waste, decaying plant matter, or industrial effluent. A high level of COD (Considered 250 mg/l O sq. or beyond) will result in fines. This applies to both soluble and insoluble COD quantities. 

How We Can Help


To avoid fines from high levels of COD, Watermark Projects can offer methods of COD reduction. Our Dissolved Air Flotation (DAF) Units can offer up to an 80% reduction of total COD quantity. Additionally, our DAFs can reduce Total Suspended Solids (TSS) and Fats, Oils & Greases (FOG) 

To speak to us more about how we can help reduce your COD, TSS or FOG please contact us.