| Wastewater
December 2003 |
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City of Browerville Develops PMP
The City of Browerville, population
735, is on its way to reducing phosphorus discharges
to the Long Prairie River. Phosphorus is a concern in
the river because it stimulates algae growth, which
dies rapidly, depleting oxygen to a point that may be
harmful to aquatic life.
Using a PMP, Browerville laid out
a plan to reduce phosphorus discharges to its wastewater
treatment ponds. Phosphorus enters the ponds at 30.8
mg/L,
10% residential and 90% industrial sources,
and leaves at 4.2 mg/L.
With an 86% removal rate in
its treatment ponds, the city would like to further
reduce its discharge phosphorus concentration to two
mg/L. To reduce phosphorus loading, industries in Browerville
are looking for ways to cut raw material loss, improve
housekeeping and keep materials off the floor and out
of the drain. The city is also encouraging businesses
and residents to use phosphorus–free soaps and
cleaners.
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