| abstract |
In the method for purifying oily wastewater, the method comprises dendritic polyamine, dendritic polyamidoamine, and hyperbranched polyethyleneimine, and gluconolactone, alkylene oxide, salt of 3-chloro-2-hydroxypropanesulfonic acid, Adding one or more demulsifiers selected from the group consisting of reaction products of alkyl chloride, benzyl chloride, and dialkyl sulfate to the waste water in an effective purification amount. [Selection figure] None |