Explain the physical process of sewage treatment.

Explanation

**Step-by-Step Solution:**

1. **Introduction to Sewage Treatment**: Sewage treatment involves a series of processes aimed at removing contaminants from wastewater to make it safe for disposal or reuse. The treatment can be categorized into three main processes: physical, biological, and chemical. Here, we will focus on the physical process, also known as primary treatment.

2. **Primary Treatment Overview**: The primary treatment is a physical process that primarily focuses on the removal of large and small particles from sewage. This is essential to reduce the load on subsequent treatment processes and to prepare the sewage for further treatment.

3. **Filtration**: The first step in the physical process is filtration. This involves the removal of floating debris and larger particles from the sewage. Filtration can be done using screens or filters that trap larger solids while allowing the liquid to pass through.

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