The Treatment System
The water from Pond 5 flows through an aerator and into the final settling pond. Exposed again to oxygen, the iron oxide precipitates out and the water leaves the pond free of metals and at a neutral pH. The water exiting this pond is clean water, the same water that enters the system at a pH of approximately 2.8 and exits now at a pH of about 6.5.
Water Quality at Vintondale Treatment System
|Location||Date||Flow (GPM)||pH||Alkalinity to pH 4.5 (mg/l as CaCO3)||Acidity to pH 8.2 (mg/l as CaCO3)||Fe (mg/l)||Mn (mg/l)||Al (mg/l)||Sulfates (mg/l)||Suspended Solids (mg/l)|
|Pond 6 Outflow||6/15/2004||35||6.1||15||36||3.47||2.57||< 0.50||593||12.0|
|Pond 6 Outflow||4/4/2005||280||6.2||16||10||2.45||2.80||< 0.50||590||9.0|
|Pond 6 Outflow||1/10/2006||45||6.3||14||18||2.50||2.16||< 0.50||455||< 3.0|
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