光催化氧化处理有机磷农药废水的正交试验  

Orthogonal Test of the Photocatalytic Degradation for Organophosphorus Pesticide Wastewater

作　　者：鄢丹[1] 刘康怀[1] 覃许江[1] 陈瑜[1] 曹长春[1] 施家刚[1] 严丽[1] 

机构地区：[1]桂林工学院广西环境工程与保护评价重点实验室

出　　处：《桂林工学院学报》2008年第1期109-112,共4页Journal of Guilin University of Technology

基　　金：国家科技攻关计划资助项目(2003BA901A07);广西教育厅资助项目(200509040)

摘　　要：在TiO2悬浮体系下,以有机磷农药模拟废水进行了半导体光催化氧化降解的静态试验,对光催化的主要影响因素(pH值、催化剂用量、光照强度、曝气量等)进行了正交试验研究。在本试验条件下,各因素对光催化氧化影响的重要程度依次是:光照强度、pH值、曝气量、催化剂用量。试验最佳条件是:pH值为2,催化剂用量300 mg/L,光照强度40 W,曝气量1.5 L/min。讨论分析了COD降解率随各因素的变化规律。In the system of the TiO2 aqueous suspensions, the main factors influencing the semiconductor photocatalytic degradation of simulated organophosphorus pesticidewastewater , such as pH value, the dosage of photocatalyst, the intensity of illumination and the airflow are studied in orthogonal experiment. Results show that under this test condition the factors influencing the effect of photocatalytic oxidation in degree from high to low are ： the intensity of illumination, pH, the airflow and the dosage of photocatalyst. The optimal conditions for photocatalytic oxidation are pH = 2, the dosage of photocatalyst 300 mg/L, the intensity of illumination 40 W and the airflow 1.5 L/min in this time. The change rules of various influenceing factors for the COD degradation are discussed.

关 键 词：光催化氧化 有机磷农药废水 正交试验 

分 类 号：X703[环境科学与工程—环境工程]