Which one of the following impuritites is easiest to remove from wastewater ?

Options

A. Bacteria
B. Colloids
C. Dissolved soilds
D. Suspended solids

Explanation

To determine which impurity is easiest to remove from wastewater, we need to analyze the types of impurities typically found in wastewater and their characteristics.

### Step-by-Step Solution:

1. **Identify the Types of Impurities**: Wastewater contains various impurities, including bacteria, colloids, dissolved solids, and suspended solids.

2. **Understand Suspended Solids**: Suspended solids are particles that are not dissolved in water and can include materials like sand, silt, and clay. These particles tend to float in the wastewater.

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