TiO_(2)-聚苯乙烯复合微球对印染废水的光催化降解

Photocatalytic degradation of dyeing wastewater by TiO_(2)-polystyrene composite microspheres

以微悬浮聚合法制备多孔TiO_(2)-聚苯乙烯复合微球,研究其对印染废水的光催化降解性能,考察了pH、微球用量、降解时间等对COD去除率及脱色率的影响。结果表明:复合微球对印染废水有较好的光催化降解作用,降解反应受pH、微球用量的影响较大,在合适的条件下能获得较高的COD去除率及脱色率。

Porous TiO_(2)-polystyrene composite microspheres were prepared by micro-suspension polym⁃erization method.The potocatalytic degradation of dyeing wastewater was carried out,and the effects of pH,microspheres dosage and reaction time on the removal of COD and decolorization were investigated.The re⁃sults showed that the composite microspheres had good photocatalytic degradation effect on printing and dye⁃ing wastewater.The degradation reaction was greatly affected by pH and microspheres dosage.Under suit⁃able conditions,higher COD removal rate and decolorization rate could be obtained.