![The Village of Slinger's Process Optimization Initiative Has Spanned Three Years in Search of Phosphorus Reduction](https://cole-tpomag.imgix.net/https%3A%2F%2Fwww.tpomag.com%2Fuploads%2Fimages%2Feem_6973.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=cb7d5114af94b09619a3164029d73406)
Greg Moser climbs a tank of polyaluminum chloride (Chemtrade), which is fed into the oxidation ditch. This is one of several measures the Slinger team has taken toward driving down effluent phosphorus.
The Slinger (Wisconsin) Wastewater Treatment Plant will face a monthly average phosphorus limit of 0.075 mg/L in 2023.
Since the village (population 5,500) can’t afford a multimillion-dollar plant upgrade, including the installation of tertiary filters, the operations team is...