Waste water effluent

BOD (Biochemical Oxygen Demand) and COD (Chemical Oxygen Demand) are measures of the amount of organic matter in wastewater.

High levels of BOD and COD in wastewater can indicate the presence of pollutants and can be harmful to the environment if discharged without treatment.

Here are some ways to reduce BOD and COD in wastewater effluent:

  1. Reduce the amount of organic matter entering the wastewater: This can be done by implementing source control measures, such as reducing the amount of organic materials used in industrial processes or reducing the amount of food waste in commercial kitchens.
  2. Implement primary treatment: Primary treatment involves the removal of large solid materials through physical processes like screening and sedimentation. This can help reduce the amount of organic matter in the wastewater.
  3. Implement secondary treatment: Secondary treatment involves the use of biological processes to break down organic matter in the wastewater. This can be done through processes like activated sludge, trickling filters, or membrane bioreactors.
  4. Implement tertiary treatment: Tertiary treatment involves additional treatment processes to further reduce BOD and COD levels in the wastewater. This can include processes like filtration, chlorination, or UV disinfection.
  5. Use advanced oxidation processes: Advanced oxidation processes, such as ozonation or UV/H2O2, can be used to further break down organic matter in the wastewater and reduce BOD and COD levels.

It is important to note that the specific treatment methods used will depend on the characteristics of the wastewater and the specific discharge requirements. It is recommended to consult with a wastewater treatment professional to determine the most appropriate treatment methods for a specific wastewater effluent.

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Based on experiences, its recommended to apply bio-enzyme or microbes on schedule basis. This good operation practices would,

  1. Ensure the lifetime of the facilities.
  2. Reduce frequency of cleaning.
  3. Reduce sludge.
  4. Eliminate bad smell.
  5. Eliminate pest such as cockroaches and rats.

Every facility have different capacity, daily operation, and community behaviours. Therefore, application, dosage, and methodologies of the microbes need to be customised accordingly. And, normally its recommended to trial for at least 2 to 4 weeks, before a Standard Operating Procedure is designed.

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