Cruising to Compliance

A real-time ferric chloride feed controller optimizes phosphate removal, saves money, and eases permit worries at a Wisconsin treatment plant.
Cruising to Compliance
The system includes a PHOSPHAX sc phosphate analyzer (left), sc1000 digital controller (above), and Filtrax probe in a sample tub.

From July through mid-October, wastewater from vegetable and cheese processing facilities caused phosphorus spikes at the Beaver Dam (Wis.) Wastewater Treatment Plant. Operators sampled phosphorus just before the effluent outfall three times per week and adjusted the liquid ferric...

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