The effect of zinc orthophosphate and pH/alkalinity adjustment on copper and lead levels in drinking water

Diane M. Churchill
A twelve month pilot plant study was conducted to evaluate the relative ability of various corrosion control treatments to reduce metal leaching from typical household plumbing materials. A pipe loop system with seven loops, each consisting of lead/tin soldered copper piping, coils of lead/tin solder material and brass faucets, was used to test six treatment options and a control. pH and alkalinity were adjusted by the addition of lime (Ca(OH)2) and sodium bicarbonate (NaHC03) respectively,...
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