Process for removing oxidants from water injected into a subsurface aquifer to prevent mobilization of trace metals
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United States of America Patent
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Nov 5, 2013
Grant Date -
Nov 10, 2011
app pub date -
Dec 22, 2009
filing date -
Dec 29, 2008
priority date (Note) -
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Abstract
A method for providing for the use of underground aquifers for water storage for municipalities or recharge. Water is treated and injected for storage in the aquifer by the addition of a small amount of a sulfide compound to remove dissolved oxygen and prevent dissolution of negative valence sulfur bearing minerals, such as pyrite, in the subsurface. The stored water may be subsequently withdrawn from the aquifer and treated to remove residual amounts of sulfide ions. The withdrawn water being suitable as potable water, irrigation water, industrial use water, and aquifer water level enhancement water.
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