CAJ | 학술논문

考察了光催化降解过程中腐殖酸以及腐殖酸和TiO_2混合液的膜污染性质变化.试验采用超滤杯终端过滤的方法.结果表明:在光催化降解过程中,腐殖酸对膜的污染程度逐渐减轻.至光催化反应进行60 min时,虽然TOC去除率为70%,但腐殖酸已不再对膜产生污染,表明降解中间产物不会导致膜污染.同时,腐殖酸和TiO_2混合液的膜污染现象也消失,表明TiO_2表面性质已经恢复.可见,腐殖酸经过光催化降解后可以降低其膜污染程度.
고찰료광최화강해과정중부식산이급부식산화TiO_2혼합액적막오염성질변화.시험채용초려배종단과려적방법.결과표명:재광최화강해과정중,부식산대막적오염정도축점감경.지광최화반응진행60 min시,수연TOC거제솔위70%,단부식산이불재대막산생오염,표명강해중간산물불회도치막오염.동시,부식산화TiO_2혼합액적막오염현상야소실,표명TiO_2표면성질이경회복.가견,부식산경과광최화강해후가이강저기막오염정도.
The membrane fouling characters changing of humie acid (HA) and the mixture of HA and TiO_2 during the photoeatalysis degradation process were studied. The process is illustrated by the dead-end filtration method using the pressure reservoirs. The experiment results indicate that the membrane fouling of HA is alleviating during the photocatalysis process. Although the removal rate of TOC is 70% after 60 mins photocatalysis process, the membrane fouling phenomenon vanishes, which indicates that the degradation intermediate cannot lead to membrane fouling. The mixture cannot lead to membrane fouling after 60 mins photocatalysis process, which illustrates that the surfaces of the TiO_2 particles have been recovered. Therefore, the HA after photocatalysis degradation process can alleviate the membrane fouling level.