关键词: 有机膨润土, 再生, 有机污染物

Abstract: The paper describes the regeneration of organic bentonite and the organization of the regenerated bentonite.The best conditions for the adsorption of the organic pollutants from water by regenerated bentonite are studied by orthogonal test and the adsorption effect for organic pollutants by the organic bentonite before and after regeneration is compared.The results show that the optimal conditions for the regeneration of bentonite include combustion at 780℃ for 55min；the best organization condition include a pulp concentration of 30%, modifier dosage of 7ml/100g, reaction temperature of 60℃ and reaction time of 80min; and the optimal conditions for the adsorption of organic pollutants by regenerated organic bentonite include pH =6, dosage of bentonite of 6 g/l, temperature of 25℃, and oscillation time of 20 min, when the COD removal rate can reach 80%.

Key words: Organic bentonite, Regeneration, Organic pollutant