METHOD FOR TREATING ALKALINE WASTEWATER
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United States of America Patent
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Jul 23, 2015
app pub date -
Jul 23, 2013
filing date -
Jul 24, 2012
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Abstract
The invention provides a method for the treatment of alkaline wastewater comprising sodium ions and organic impurities, the method comprising the steps of a) contacting part of the wastewater with a cation exchange resin to obtain an acidic wastewater portion, b) mixing the acidic wastewater portion and the remaining wastewater portion in the presence of a neutralizing solution to obtain an effluent having a pH of 5 to 9, preferably 6 to 8, more preferably 6.5 to 7.5, more preferably 6.8 to 7.2 and c) reducing the amount of the organic impurities from the effluent.
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