窖水中无机离子对光催化降解腐植酸影响的实验研究  

Study on the Effect of Common Inorganic Ions on Photocatalyticcellar Water Purification

作　　者：马松尧[1] 甘连军[2] 陈作雁[1] 董坤 胡晓宁 Ma Songyao;Gan Lianjun;Chen Zuoyan;Dong Kun;Hu Xiaoning(Nature Energy research Institute,Gansu Academy of Sciences,Lanzhou 730046,China;Gansu Provincial Cancer Hospita,Lanzhou 730000,China;Gansu Provincial Center for Disease Control and Prevention,Lanzhou 730000,China)

机构地区：[1]甘肃省科学院自然能源研究所,甘肃兰州730046 [2]甘肃省肿瘤医院,甘肃兰州730000 [3]甘肃省疾控中心,甘肃兰州730000

出　　处：《甘肃科学学报》2018年第6期54-60,共7页Journal of Gansu Sciences

基　　金：甘肃省科技重大专项计划(1602FKDA004);甘肃省科学院创新团队建设项目(CX201501)

摘　　要：采用自主开发的N-TiO_2作为光催化剂,在流动相光催化反应装置中,对窖水中所含Ca^(2+)、Cl^-、CO_3^(2-)、HCO_3^-、SO_4^(2-)、NO_3^-主要无机离子对光催化剂降解腐殖酸的影响,以及复配模拟窖水和实际窖水对光催化降解腐殖酸的影响进行了实验研究,并结合pH值、反应动力学常数分析了其影响机理。实验结果表明:Ca^(2+)的存在使催化剂对腐殖酸的吸附性增大,对腐殖酸降解有一定的抑制作用;HCO_3^-、CO_3^(2-)对光催化剂吸附腐殖酸有一定的抑制作用,对降解腐殖酸影响较小;Cl^-、SO_4^(2-)、NO_3^-离子对光催化剂吸附和降解腐殖酸影响小。对COD_(Mn)为5.30mg/L、5.50mg/L实际窖水进行光催化降解,出水COD_(Mn)值均为1.37mg/L,远低于国家标准COD_(Mn)≤3.0mg/L要求,自主开发的N-TiO_2光催化剂在农村窖水深度处理去除COD_(Mn)效果好,可推广应用。Using self developed N Ti（）2 as photocatalyst in mobile phase photocatalytic reaction device, effects of 6 kinds of inorganic ions （including Ca（2＋）、Cl-、CO3（2-）、HCO3-、SO4（2-）、NO3-complex simulated cellar water and actual cellar environment on the photocatalytic degradation of humic acid were studied, combined with the pH value, reaction kinetic analyzed of its impact mechanism. The experimental results show that the presence of Ca2 catalyst increases the adsorption of humicacid,have certain inhibitory effect on humic acid degradation; HCO3 andCO23 have inhibitory effect on the adsorption of humic acid on pho tocatalytic degradation of humic acid,C1 ,SO24 and NO3 have small effect on the adsorption and photo catalytic degradation of humic acid.CODMN, 5.30 mg/I.,5.50 mg/L water cellar for photocatalytic degrada tion of effluent For the CODMn, value of 5.50 mg/L of the actual pit water photocatalytic degradation,the effluent of CODMn, value was 1.37 mg/L,far below the national standard CODMn, 3.0 mg/L requirements, it＇s proved that self developed N TiO2 can effectively remove CODMn, in the advanced treatment of rural cellar water,which can be popularized and applied.

关 键 词：光催化 N-TiO2 无机离子 腐殖酸 窖水 

分 类 号：X703[环境科学与工程—环境工程]