Primary wastewater treatment copies two of nature's purification methods. Which two are these?

Question

Quizplus · Accepted Answer

Primary wastewater treatment involves two types of processes which are similar to natural purification methods. These processes include settling and filtration. During settling, heavy solids and organic matter settle down in the wastewater due to gravity. Filtration involves passing wastewater through a filter that removes smaller suspended particles. These processes are similar to sedimentation and natural filtration that occur in natural water bodies like rivers and lakes. The other options listed, such as distillation, crystallization, aeration, chlorination, oxidation, and dilution, are not typically used in primary wastewater treatment.

Primary Wastewater Treatment Copies Two of Nature's Purification Methods