Problem: When the wastewater treatment plant in Madison, Indiana, received a new phosphorus limit of 1.0 ppm, the staff assessed the processes and found that biological removal alone would not suffice.
Solution: The team decided to add a chemical-feed. Since frequent rains increased flow but diluted the influent phosphorus entering the plant, plant leaders ruled out flow-based feeds and instead chose a ChemScan mini oP Analyzer from In-Situ for its large, blockage-resistant sample tubing, internal self-cleaning and low cost of ownership. It measures effluent phosphorus in 15-minute increments and dictates the chemical feed accordingly.
Result: The analyzer enables staff to confirm compliance
