γ-电离辐射降解废纸造纸废水的研究  

Research on Degradation of Recycling Papermaking Wastewater by γ-Radiation

作　　者：孙萌萌[1] 龚文琪[1] 何仕均[2] 王建龙[2] 桂冠[1] 

机构地区：[1]武汉理工大学资源与环境工程学院,武汉430070 [2]清华大学核能与新能源技术研究院,北京102201

出　　处：《武汉理工大学学报》2012年第9期113-118,共6页Journal of Wuhan University of Technology

基　　金：国家科技部国际合作专项基金(2011DFR00110)

摘　　要：采用60 Co-γ辐射源对废纸造纸废水进行辐射处理,并对辐射前后水样的某些指标进行表征,辐射剂量分别为0.5kGy、1.5kGy、2.5kGy。随着辐射剂量的增大,水样的CODCr先上升后下降,而累计耗氧量和比好氧速率(SOUR)则持续下降;辐射后水样的急性毒性大大升高,这是由于水的幅解过程生成的H2O2具有一定毒性,而将其用MnO2催化分解后,水样急性毒性随辐射剂量的增大而降低;用气质联用仪(GC-MS)监测水样辐射前后的有机物种类,发现水样中本来含有很多长链烷烃和酚类以及少量芳香酯类,经辐射后长链烷烃和芳香酯几乎完全消失。60Co-γ radiation source was utilized in recycling papermaking wastewater radiation treatment（radiation dose was 0.5,1.5 and 2.5 kGy respectively）,and some index of the water before and after radiation was characterized in different ways.The results indicate that with the increasing of radiation dose,the CODCr of the water rises first and then declines,while accumulating oxygen consumed and specific oxygen uptake rate drops continuously.The acute toxicity of the water increased after the radiation,for the existence of H2O2 in the water,which was produced in the radiolytic decomposition of the water.After a certain amount of MnO2 was added in the water to catalyze the decomposition of H2O2,the acute toxicity decreased with the increase of the radiation dose.Gas Chromatography-Mass Spectrometer（GC-MS） was used to detect the organics in the water before and after radiation,and some long-chain n-alkanes and phenols and a small amount of aromatic esters was found in the raw water and the alkanes and aromatic esters almost completely disappeared after radiation.

关 键 词：γ-电离辐射 废纸造纸废水 比好氧速率 急性毒性 GC-MS 

分 类 号：X791[环境科学与工程—环境工程]