What is the name of the liquid waste with dissolved and suspended impurities?

Wastewater 

The correct answer is option 2. Wastewater.
**Wastewater** refers to any water that has been affected by human use and is no longer suitable for its intended purpose. It contains various impurities, both dissolved and suspended, resulting from domestic, industrial, commercial, or agricultural activities. Wastewater can include liquid waste from households, factories, businesses, and stormwater runoff.

Here's an explanation of the components of wastewater:

1. Dissolved Impurities:

Wastewater often contains dissolved impurities, which are substances that have become part of the water in a molecular or ionic form. Common dissolved impurities include salts, nutrients (nitrogen and phosphorus compounds), organic acids, and various chemical contaminants. These substances are typically not visible in the water.

2. Suspended Impurities:

Suspended impurities are particles that remain in the water without dissolving. They include solids like sand, silt, and organic matter. These particles can give the water a cloudy or turbid appearance. Suspended impurities may settle over time if the wastewater is allowed to stand.

3. Other Contaminants:

In addition to dissolved and suspended impurities, wastewater may contain pathogens (bacteria, viruses, and parasites) that pose health risks. It can also contain organic pollutants, heavy metals, and various chemicals depending on the sources of contamination.

4. Treatment of Wastewater:

To make wastewater safe for discharge into the environment or for reuse, it undergoes wastewater treatment processes. Treatment involves physical, chemical, and biological processes designed to remove or neutralize impurities. Common wastewater treatment steps include screening, sedimentation, biological treatment, and disinfection.

5. Environmental Impact:

If untreated or improperly treated, the discharge of wastewater into natural water bodies can have harmful effects on the environment, aquatic ecosystems, and human health. It can lead to pollution, oxygen depletion, and the spread of waterborne diseases.

Understanding and managing wastewater is essential for protecting water resources and ensuring public health. Proper treatment and disposal of wastewater contribute to environmental sustainability and the conservation of clean water sources.