The Power of Data

Inline DO and ORP monitoring yields information that helps an Ohio treatment plant improve biological phosphorus removal and cut costs

For years the American-Bath Wastewater Treatment Plant (WWTP) in northwest Ohio’s Allen County had met stringent phosphorus limits through biological removal and aluminum sulfate (alum) addition.

But when the cost of alum more than doubled from $161 per ton in 2006 to nearly $443...

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