Water treatment for selective removal of nitrates
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United States of America Patent
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-
May 12, 1981
Grant Date -
N/A
app pub date -
Jan 18, 1980
filing date -
Jan 18, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Water is treated to selectively remove substantially all of the nitrates present. This selective removal of nitrates is accomplished by adjusting the pH of the water to be treated, if necessary, to a pH of less than 8, and then passing the pH-controlled water through activated carbon. In one of the preferred embodiments, the spent activated carbon is substantially completely regenerated by backwashing to permit reuse of the carbon.
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