臭氧催化氧化对城市污水反渗透浓水中有机物的去除特性  

Removal Effect of Organics in Reverse Osmosis Concentrate of Municipal Wastewater by Ozone Catalytic Oxidation

作　　者：夏瑜 刘静[1] 何绪文[1] 杨洪英 XIA Yu;LIU Jing;HE Xu-wen;YANG Hong-ying(School of Chemical and Environmental Engineering,China University of Mining and Technology,Beijing 100083,China;School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]东北大学冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2024年第9期1342-1351,共10页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金青年基金资助项目(52100067).

摘　　要：为有效处理城市污水反渗透浓水(reverse osmosis concentrate,ROC)中有机物及认识其去除特性,采用常规指标、有机物相对分子质量分级和亲疏水分析,色谱-质谱技术及电子顺磁共振分析等研究该废水的臭氧催化氧化处理效果.结果表明:最优处理条件为臭氧质量浓度17 mg/L,原水pH 7.3,反应时间80 min;化学需氧量(chemical oxygen demand,COD)、254 nm波长下紫外吸光度(UV254)、大分子有机物(>30 ku)和疏水酸性组分(hydrophilic acid component,HOA)去除率分别为55.75%,85.05%,95.46%和72.06%;芳香烃、腐殖酸等难降解物及医药和个人护理品(PPCPs)的去除效果显著;产生了活性物质·OH;COD降解符合二级反应动力学模型.To effectively remove the organics in municipal wastewater reverse osmosis concentrate(ROC)and understand their removal characteristics,the performance of ozone catalytic oxidation in the treatment of municipal wastewater ROC was studied based on measurements of conventional wastewater quality indices,analyses of relative molecular mass classification and hydrophobic/hydrophilic properties of organic matters,and methods of chromatography‑mass spectrometry and electron paramagnetic resonance spectroscopy.The results indicate that the optimal treatment conditions are a reaction time of 80 min,an ozone mass concentration of 17 mg/L,and a raw wastewater pH of 7.3.The removal efficiencies of chemical oxygen demand(COD),UV absorbance at 254 nm wavelength(UV254),large‑molecule organics(>30 ku)and hydrophilic acid component(HOA)are 55.75%,85.05%,95.46%,and 72.06%,respectively.Refractory organics such as aromatic hydrocarbons and humic acids,as well as pharmaceutical and personal care products(PPCPs)can be efficiently removed.Active substance·OH is generated.The data of COD degradation can be well described by a second‑order reaction kinetics model.

关 键 词：臭氧催化氧化 反渗透浓水 有机物 医药和个人护理品(PPCPs) 

分 类 号：X703[环境科学与工程—环境工程]