Which statement is true regarding sludge disposal according to the material?

Which statement is true regarding sludge disposal according to the material?

• A. Dilution or ocean dumping is an acceptable disposal method for sludge.
• B. Incineration is the only acceptable method.
• C. Dilution or ocean dumping is not a proper disposal method.
• D. Disposing in regular trash is recommended.

Answer: (C)

The main point is that simply diluting sludge or dumping it into the ocean does not make disposal acceptable. Dilution does not remove or neutralize contaminants in sludge, which can include pathogens, heavy metals, and organic pollutants. Spreading sludge into waterways or onto land can spread risks to public health, contaminate groundwater, harm aquatic ecosystems, and transfer pollutants up the food chain. Therefore, dilution or ocean dumping is not considered proper disposal. Proper methods involve treating the sludge to reduce pathogens and stabilize contaminants, then disposing of it in ways that contain or safely reuse it—such as incineration or approved land disposal, or beneficial reuse as biosolids under regulatory standards.

The main point is that simply diluting sludge or dumping it into the ocean does not make disposal acceptable. Dilution does not remove or neutralize contaminants in sludge, which can include pathogens, heavy metals, and organic pollutants. Spreading sludge into waterways or onto land can spread risks to public health, contaminate groundwater, harm aquatic ecosystems, and transfer pollutants up the food chain. Therefore, dilution or ocean dumping is not considered proper disposal. Proper methods involve treating the sludge to reduce pathogens and stabilize contaminants, then disposing of it in ways that contain or safely reuse it—such as incineration or approved land disposal, or beneficial reuse as biosolids under regulatory standards.