Sewage sludge does not contain

Options

A. Nitrogen
B. Phosphorus
C. Potassium
D. All of these

Answer

To solve the question "Sewage sludge does not contain," we will analyze the components of sewage sludge and the options provided.

### Step-by-Step Solution:

1. **Understanding Sewage Sludge**:
- Sewage sludge is a semi-solid material that is produced as a by-product during the treatment of municipal wastewater. It is composed of both inorganic and organic materials.

2. **Components of Sewage Sludge**:
- Sewage sludge contains a variety of nutrients, particularly those that are essential for plant growth. The major nutrients found in sewage sludge include nitrogen and phosphorus.

3. **Analyzing the Options**:
- The options given are:
- A) Nitrogen
- B) Phosphorus
- C) Potassium
- D) All of these
- From our understanding, we know that nitrogen and phosphorus are present in significant amounts in sewage sludge.

4. **Identifying the Nutrient that is Negligible**:
- While nitrogen and phosphorus are abundant, potassium is typically found in much lower concentrations in sewage sludge. It may be present but is not a major component.

5. **Conclusion**:
- Since the question asks which nutrient is not contained in significant amounts in sewage sludge, the correct answer is **C) Potassium**.

### Final Answer:
Sewage sludge does not contain **Potassium** in significant amounts.

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