Driving Down P

A research project helps establish the cost-benefit picture for chemically removing phosphorus in lagoon treatment systems
Driving Down P
FIGURE 1 – With phosphorus treatment by addition of alum, the cost goes up exponentially as the effluent phosphorus is driven lower.

State regulatory agencies are ratcheting down nutrient limits for wastewater treatment plants, notably limits on phosphorus. Reaching extremely low phosphorus limits is especially challenging for lagoon systems.

To help demonstrate the levels to which phosphorus can be removed...

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