Which of the following is True/false
Secondary treatment of sewage waste also called Biological treatment

Answer

To determine whether the statement "Secondary treatment of sewage waste also called Biological treatment" is true or false, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Sewage Treatment Process**:
- Sewage treatment is typically divided into two main stages: primary treatment and secondary treatment.

2. **Identify Primary Treatment**:
- The primary treatment involves the physical removal of large and small waste particles through processes such as filtration and sedimentation. This results in a liquid effluent known as primary effluent.

3. **Identify Secondary Treatment**:
- The secondary treatment follows the primary treatment and involves the biological breakdown of the primary effluent.

4. **Role of Microorganisms**:
- During secondary treatment, aerobic and anaerobic bacteria play a crucial role in decomposing organic matter present in the primary effluent.

5. **Terminology**:
- Because the secondary treatment relies heavily on biological processes and microorganisms, it is often referred to as biological treatment.

6. **Conclusion**:
- Since secondary treatment is indeed characterized by biological processes, the statement "Secondary treatment of sewage waste also called Biological treatment" is true.

### Final Answer:
The statement is **True**.

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