Abstract
There were still high CODCr in straw pulp papermaking waste water, which was dealed with coagulation-combination with nuclear flocculation process. To explore its causes, according to organic qualitative analysis results by GC-MS of the coagulation-flocculation with nuclear process on wastewater treatment and biochemical analysis, this study did the mechanism analysis to the process. It was the main reason, why caused high CODcr, to remain small molecules organic contaminants in the water, such as phthalic acid mono-2-ethylhexyl ester and Diisobutyl phthalate.
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