In a municipal wastewater treatment plant,the primary treatment step includes _________________

Question

Quizplus · Accepted Answer

The primary treatment step in a municipal wastewater treatment plant involves letting the sewage sit in large settling tanks so that suspended solids can settle out. This process is called sedimentation and allows the heavier solids to settle to the bottom while the lighter materials float to the surface, creating sludge and scum layers that can be removed. This process removes up to 60% of the suspended solids and 30% of the biological oxygen demand from the wastewater. Chlorination, stirring, adding bacteria, and micro-filtering are all part of other treatment steps in the wastewater treatment process.

In a Municipal Wastewater Treatment Plant,the Primary Treatment Step Includes