CAJ | 학술논문

TiO2光催化消毒是一种安全有效的消毒方式，对改善目前水污染状况和饮用水水质具有重要意义。文章以污水厂二级出水中金黄色葡萄球菌和粪大肠菌群两种病原菌为试验对象，采用光催化灭活实验，研究了TiO2的种类及浓度、紫外光的光照强度及时间和pH值对TiO2光催化灭活金黄色葡萄球菌和粪大肠菌群灭活效果的影响，并与紫外光（ UV）灭活效果进行了对比研究。结果表明：TiO2的种类及浓度、光照强度及时间和pH值均对TiO2光催化灭活效果有显著影响；在TiO2为P25、浓度为0.5 g/L、光照强度为40 W、光照时间为20 min的条件下，TiO2光催化能够取得最好的灭活效果；而酸性和碱性条件下，其灭活效果比中性条件下要好；TiO2对金黄色葡萄球菌光催化灭活效果优于UV。
TiO2광최화소독시일충안전유효적소독방식，대개선목전수오염상황화음용수수질구유중요의의。문장이오수엄이급출수중금황색포도구균화분대장균군량충병원균위시험대상，채용광최화멸활실험，연구료TiO2적충류급농도、자외광적광조강도급시간화pH치대TiO2광최화멸활금황색포도구균화분대장균군멸활효과적영향，병여자외광（ UV）멸활효과진행료대비연구。결과표명：TiO2적충류급농도、광조강도급시간화pH치균대TiO2광최화멸활효과유현저영향；재TiO2위P25、농도위0.5 g/L、광조강도위40 W、광조시간위20 min적조건하，TiO2광최화능구취득최호적멸활효과；이산성화감성조건하，기멸활효과비중성조건하요호；TiO2대금황색포도구균광최화멸활효과우우UV。
TiO2 photocatalytic disinfection which is important for improving the current situation and the pollution of drinking water is a safe and effective method. As the experimental object,two pathogenic bacteria such as staphylococcus aureus and faecal coliforms from secondary sewage plant effluent in the photocatalytic inactivation experiments were tested to investigate the impact of TiO2 species,TiO2 concentration,light intensity,light time and pH on the photocatalysis,and compared with the UV. The results indicate that TiO2 species,TiO2 concentration,light intensity,light time and pH all have significant effects on the inactivation. The best result of photocatalytic inactivation appears with P25,TiO2 concentration of 0. 5 g/L,the light intensity of 40 W,and the light time of 20 min. The effect of acidic and alkaline conditions is better than that of neutral conditions. And TiO2 photocatalytic inactivation to the staphylococcus aureus is better than that of the UV.