Chemical Oxygen Demand (Koi) Reduction in Wastewater and Use of Activated Carbon

Before treating wastewater, parameters such as biochemical oxygen demand (BOD) and chemical oxygen demand (COD) are often used to determine water quality. COD measures oxidisable compounds in a water sample and is an essential indicator of water pollution.

What is the Chemical Oxygen Demand?

COD refers to the amount of oxidiser used to purify water samples under certain conditions. This amount reflects organic matter pollution in the water. High COD values indicate the severity of water pollution.

Importance of Chemical Oxygen Demand

It refers to the amount of dissolved oxygen microorganisms need to decompose organic matter under aerobic conditions. Larger BOD values indicate that the water contains more organic matter, so pollution is more serious.

Difference Between COD and BOD

COD measures all oxidisable substances in a water sample, while BOD measures only organic compounds. Therefore, BOD is usually lower than COD for the same sample.

COD Reduction Methods in Wastewater

There are several methods to reduce COD in wastewater:

1. Wastewater Separation (Coagulation and Flocculation): This method removes suspended solids through coagulation and flocculation.
2. Use of Charcoal Activated Carbon: Charcoal-activated carbon is widely used to remove organic compounds from wastewater. The active carbon filter adsorbs the organic substances in the water and purifies the water.

COD Removal with Coal-activated Carbon

Filtration using coal-activated carbon powder is an effective method to remove organic substances in wastewater. This is widely used in water purification processes and enables the safe discharge of sewage.

Benefits of Using Activated Carbon for COD Removal

1. Odour Control: Activated carbon plays an influential role in removing odours found in wastewater.
2. Chemical Reduction: Effective in reducing chemicals in water.
3. Environmentally Friendly Discharge: The opportunity to safely discharge purified water into the environment.

This article provides basic information on COD reduction in wastewater and using activated carbon. It is important to consult experts for solutions that suit your needs.