Wastewater, including sewage usually undergoes several treatments at a sewage treatment plant. Match the treatment with the process for expected outcome.
A)primary treatment: eliminating inorganic and organic compounds by aerating and circulating the wastewater.
B)tertiary treatment: biologically decomposing suspended organic material.
C)secondary treatment: reducing phosphorus and nitrogen levels with a filtering system.
D)primary treatment: removing suspended and floating particles by mechanical processes.

Question

Quizplus · Accepted Answer

Primary treatment in sewage treatment plants involves mechanical processes such as screening, sedimentation, and skimming to remove suspended and floating particles from wastewater. This step does not involve the removal of dissolved organic or inorganic compounds through aeration or the biological decomposition of organic material, nor does it specifically target the reduction of phosphorus and nitrogen levels through filtering systems.

Wastewater, Including Sewage Usually Undergoes Several Treatments at a Sewage