Treatment of paper mill wastewater using a composite inorganic
Aluminum sulfate is added to introduce Al (III) to the system to copolymerize with iron salts, and the Fe/Al molar ratio is 11:1. Sulfuric acid is used to adjust the system acidity, preventing the in-situ formed coagulant from sedimentation. ... The mill has a three-stage waste water treatment system, and its configuration is very similar to ...
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