Which method is commonly used to treat wastewater?

Filtration is a fundamental method used in the treatment of wastewater. This process involves the physical removal of solids and suspended particles from liquids. By passing wastewater through filters, which can be made of various materials such as sand, gravel, or membranes, contaminants can be separated from the clean water.

The effectiveness of filtration in wastewater treatment lies in its ability to reduce turbidity and remove bacteria and other pathogens, making it an essential step in the overall treatment process. This method can be employed in various stages of wastewater treatment, from preliminary treatment, where larger solids are removed, to advanced treatment processes that target finer particles.

In contrast, incineration, composting, and radiation are not typically used to treat wastewater. Incineration is more suited for solid waste management, composting is primarily a method for organic solid waste, and radiation is generally not used in conventional wastewater treatment. Thus, filtration stands out as the primary method for achieving clean and safe effluent from wastewater treatment facilities.