Waste Water Treatment
1
When raw sewage comes into Blue Plains debris and grit are removed and trucked to a landfill. (Rosanne Skirble/VOA)
2
Sewage flows into primary sedimentation tanks that separate more than half of the suspended solids from the liquid. (Rosanne Skirble/VOA)
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After primary sedimentation, the fluid flows into secondary tanks where oxygen is pumped into it so microbes can break down the organic matter. (Rosanne Skirble/VOA)
4
In a laboratory at Blue Plains, researchers are working on a cost-saving measure that would deploy a newly discovered microbe that can break down organic matter without oxygen. (Rosanne Skirble/VOA)