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During the secondary treatment of the pr...

During the secondary treatment of the primary effuent how does the significant decrease in BOD occur

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### Step-by-Step Solution 1. **Understanding Secondary Treatment**: - Secondary treatment is a crucial step in wastewater management that follows primary treatment. It primarily aims to further reduce the organic matter present in the primary effluent. - This treatment involves two main processes: aeration and biological treatment. 2. **Aeration of Primary Effluent**: - In this step, the primary effluent is aerated, which means it is exposed to air. This process increases the oxygen content in the water. ...
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