What kind of samples does chlorination commonly treat?

Chlorination is a widely utilized disinfection process, particularly effective for treating treated wastewater samples. This process involves adding chlorine or chlorine compounds to wastewater to eliminate pathogens, making the water safer for discharge or reuse. In the context of wastewater treatment, chlorination is a critical step designed to ensure that the final effluent meets health and environmental standards by significantly reducing microbial contamination.

The other options are not typically associated with chlorination practices. Solid waste samples contain a variety of materials that are not suited for disinfection via chlorination. While biosolids may undergo various treatments before disposal or reuse, they require different handling processes, and chlorination is not commonly applied to all types of biosolid samples. Lastly, untreated groundwater samples may contain natural contaminants, but chlorination is not a conventional treatment method for such samples; other methods like filtration or reverse osmosis are generally preferred for groundwater contaminants. Thus, chlorination's effectiveness and application align specifically with treated wastewater samples.