Method of regenerating alkali-containing wash solutions utilized for cleaning containers
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United States of America Patent
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-
Jan 28, 1986
Grant Date -
N/A
app pub date -
May 11, 1984
filing date -
May 13, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Separation of dissolved aluminum, copper, and other heavy metals and/or carbonates from sodium hydroxide or potassium hydroxide containing wash solutions utilized during the mechanical cleaning of metal-clad containers, especially bottles. This separation is accomplished by adding calcium compounds and separating off the thereby formed precipitates from the wash solution. The specific calcium compound is added to the wash solution directly in the form of a solid compound. Calcium oxide or calcium hydroxide are preferably used as the calcium compounds, and are primarily added directly to the wash solution as a solid.
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