Researches on using straw pulp lignin as coagulant to treat industrial wastewater
Lignin is extracted from straw pulp paper-making black liquor. It is us ed as coagulant for decoloration and CODCr<\sub> removal in woolen textile factories, printing and dyeing factories and dye-making factories. Experiments show that lignin is a promising coagulant. It has quite good CODCr<\sub> a nd chromaticity removal efficiency on wastewater from those factories. It not on ly reclaims the useful materials from wastewater in paper-making factories, but is able to be used for other industrial wastewater. Double benefits can be obtai ned.
Key words: lignin; coagulant; dyeing wastewater
Tian Yongshu, Wang Yanhong . Researches on using straw pulp lignin as coagulant to treat industrial wastewater[J]. Industrial Water Treatment, 2005 , 25(4) : 35 -36 . DOI: 10.11894/1005-829x.2005.25(4).35
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