Biologic Product (DEQBAC)
Wastewater Treatment with COD and BOD for Water Purification:
Wastewater treatment plants are facilities designed to treat and purify wastewater before it is returned to the environment. These processes are designed to reduce pollution levels in water, including organic matter, nitrogen, and phosphorus.
Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD) are two parameters that measure the amount of organic matter present in water. The main process used to reduce COD and BOD is biological treatment, which involves using microorganisms to break down and oxidize the organic matter present in water. Microorganisms are grown in aerated tanks and supplied with oxygen so they can break down organic matter into carbon dioxide and water.
Nitrogen and phosphorus are nutrients that can cause excessive algae growth and water eutrophication. Physical and chemical processes, as well as biological processes, are used to reduce nitrogen and phosphorus levels.
One of the most commonly used physical processes to reduce nitrogen and phosphorus is the removal of suspended solids, which involves separating solid particles from wastewater through sedimentation or filtration processes.
In addition to the biological and physical processes mentioned above, chemical processes such as coagulation-flocculation are used to reduce pollution levels in wastewater.
Coagulation-flocculation involves adding a chemical coagulant, such as aluminum sulfate or ferric chloride, to wastewater to form flocs that can be easily separated from water. Flocs are formed by joining small particles present in wastewater into larger, heavier flocs.
Once the flocs are formed, they are removed through sedimentation or filtration processes. This coagulation-flocculation process is particularly effective in reducing COD and BOD levels in wastewater.
In summary, wastewater treatment plants use a combination of biological, physical, and chemical processes to reduce pollution levels in water and ensure its safe return to the environment.