Sewage sludge is used as Tipping is a technique of

Options

A. manure
B. biogas generator
C. Both A and B
D. Tipping

Answer

### Step-by-Step Text Solution:

1. **Understanding Sewage Sludge**: Sewage sludge is a byproduct of wastewater treatment processes. It consists of organic and inorganic materials that are left over after the treatment of sewage.

2. **Identifying the Use of Sewage Sludge**: One common use of sewage sludge is in landfilling techniques, specifically through a method known as "tipping."

3. **Defining Tipping**: Tipping, also referred to as sanitary landfilling, is a technique where waste materials, such as sewage sludge, are deposited in a designated area.

4. **Process of Tipping**:
- The sewage sludge is spread over a designated land area.
- To prevent pests and vectors (like flies) from accessing the sludge, it is covered with layers of soil.
- Over time, the sludge undergoes natural decay and decomposition.

5. **Final Product**: After the decomposition process, the treated sludge can be transformed into a nutrient-rich organic material, commonly referred to as manure or bio-manure. This can then be used to enhance soil fertility.

6. **Clarifying Misconceptions**: It is important to note that sewage sludge is not used as a biogas generator through the tipping method. For biogas production, specific conditions and setups (like biogas plants) are required, which are different from the sanitary landfilling process.

7. **Conclusion**: Therefore, the correct answer to the question is that sewage sludge is used as manure through the tipping technique.