利用紫外光辐射和u.v.／H2O2法分解氯苯酚时光吸收的影响

本文研究了氯苯酚的水溶液通过紫外光辐射和Ｕ．Ｖ．／Ｈ２Ｏ２法分解时对光吸收的影响，发现氨苯酚和Ｈ２Ｏ２的光吸收和光解特性在很大程度上取产愉于溶液的ｐＨ值，并可用两种分配模式来描述，其中Ｕ．Ｖ／Ｈ２Ｏ２法不同于其他模式的差异性通过研究各种苯酚和Ｈ２Ｏ２的紫外光吸收表现出来，这归因于直接光解和自由羟基断裂，从而导致氯苯酚的分解。     

高级氧化技术在废水处理中的应用研究进展

探讨了高级氧化技术（Ａｄｖａｎｃｅｄ Ｏｘｉｄａｔｉｏｎ Ｐｒｏｃｅｓｓｅｓ，即ＡＯＰｓ）如：Ｏ３／Ｈ２Ｏ２Ｆｅｎｔｏｎ试剂均相湿式催化氧化；Ｈ２Ｏ２／ＵＶ、Ｏ３／ＵＶ、Ｏ３／Ｈ２Ｏ２／ＵＶ均相光催化氧化；多相湿式催化氧化，多相光催化氧化，多相催化和生化氧化等过程处理废水及其反应机理，论述了ＡＯＰｓ技术在工业废水处理方面的研究进展。     

UV-B辐射对小麦叶抗氧化系统的影响

研究了温室种植的小麦在０（ＣＫ）、８．８２ｋＪ／ｍ＾２（Ｔ１）和１２．６ｋＪ／ｍ＾２（Ｔ２）三种剂量的紫外线Ｂ（ＵＶ－Ｂ）辐射下抗氧化系统的变化及其原因。ＵＶ－Ｂ辐射诱导了Ｈ２Ｏ２的合成，还原型抗坏血酸和还原型谷胱甘肽含量的增加、过氧化氢酶、愈创木酚过氧化物酶、抗坏血酸过氧化物酶和谷胱甘肽还原酶活性升高，而类胡萝卜素稍有所降低、超氧歧化酶（ＳＯＤ）活几乎不受ＵＶ－Ｂ辐射影响，分析表明，ＵＶ－Ｂ辐射     

均相氧化法处理有机废水研究综述

对均相氧化法处理有机废水技术进行综述，包括Ｈ２Ｏ２＋Ｆｅ＾２＋，Ｈ２Ｏ２＋ＵＶ，Ｈ２Ｏ２＋Ｆｅ＾２＋＋ＵＶ，Ｏ３＋ＵＶ和Ｈ２Ｏ２＋Ｏ３等五种均相氧化法体系。     

挥发性有机物光催化降解研究进展

阐述了挥发性有机物（ＶＯＣｓ）光催化降解的基本原理，分析了气相条件下不同ＶＯＣｓ的降解途径以及Ｏ２和Ｈ２Ｏ在光催化反应中的作用、光催化反应过程的传质和动力学规律，提出了反应器设计需要遵循的基本原则，叙述了ＶＯＣｓ光催化降解的催化剂及其换活现象、已研究的ＶＯＣｓ的光催化降解效率、部分物质难光催化降解的原因，讨论了ＶＯＣｓ光催化降解进一步研究的方向和应用前景。     

TiO2—Cu^2＋体系降解偏二甲肼的研究

研究了在ＴｉＯ２催化氧化降解偏二甲肼的反应体系中添加Ｃｕ＾２＋的效果以及Ｃｕ＾２＋浓度，添加Ｈ２Ｏ２，反应体系Ａ／Ｖ值以及紫外光与太阳光作光源对偏二甲肼降解率的影响，结果表明，在ＴｉＯ２光催化降解偏二甲肼的反应体系中Ｃｕ＾２＋的最佳投加量为４０ｍｇ／Ｌ。添加一Ｈ２Ｏ２以及在紫外光照射下，适当增大反应液的Ａ／Ｖ值会大大提高偏二甲肼的降解率。同时也研究了偏二甲肼降解中间产物随着反应进程的降讲解规律。     

过氧化物处理被污染土壤的最佳选择——铁矿物质的利用

本文探讨了利用标准的芬顿试剂方法，连续加入铁（Ⅱ）、Ｈ２Ｏ２和针矿铁（ａ－ＦｅＯＯＨ）Ｈ２Ｏ２的方式，处理被五氯化酚（ＰＣＰ）污染的硅沙。标准的芬顿试剂方法可以使１０ｍｇ／Ｌ的可溶性ＰＣＰ氧化，但是对降解１０ｍｇ／ｋｇ或２５０ｍｇ／ｋｇ硅沙中的颗粒或被吸附的ＰＣＰ是无效的。当连续加入过量的试剂（４８０ｍｇ／ｌ铁和７％Ｈ２Ｏ２）时，就可降解颗粒的和被吸附的ＰＣＰ，不过，这需要大计量的Ｈ２Ｏ２。试验证     

UV/H2O2/草酸铁络合物光降解水中氯仿的研究

以４００Ｗ高压汞灯为紫外光源，Ｈ２Ｏ２－草酸铁络合物为光氧化剂，对氯仿水溶液进行了光降解反应实验研究．结果表明，ＵＶ／Ｈ２Ｏ２草酸铁络合物体系能有效地使水溶液中氧仿迅速光解脱氯；在等摩尔系列溶液中,Ｆｅ３＋／草酸根的摩尔比为１：３时，氯仿光解效果最好：溶液ｐＨ值对氯仿光解有显著影响，ｐＨ值在３－４时光解速率最快；随着Ｈ２ｏ２浓度的增加，氯仿大解速率提高，但Ｈ２Ｏ２浓度较大时，Ｈ２Ｏ２的有效利用率降低；温度对氯仿光解反应有一定影响，反应的表观活化能为７．６ｋＪ／ｍｏｌ.     

负载型TiO2固定相光催化氧化法降解水中呋码唑酮

以高压汞灯为光源、负载在海砂上的ＴｉＯ２为催化剂，采用敞口固定床型光催化反应器对水中难降解的呋码唑酮（ＦＴＤ）进行了固定相光催化氧化实验。结果表明，反应速率可用ＬａｎｇｍｕｉｒＨｉｎｓｈｅｌｗｏｏｄ方程描述，与光分解相比，光催化氧化的突出优点是矿化程度高，相同光辐射条件下反应１００ｍｉｎ，０．１０ｍｍｏｌ／Ｌ的ＦＴＤ水溶液经光催化氧化后ＴＯＣ的去除率为８９．１％，而经光分解后ＴＯＣ的去除率仅为２８．８％；在反应体系中投加少量臭氧或过氧化氢可以显著提高ＦＴＤ的氧化效率，说明光催化氧化可以兼容Ｏ３／ＵＶ、Ｈ２Ｏ２／ＵＶ等光激发氧化工艺。制得的负载型ＴｉＯ２具有较高的机械强度和化学稳定性，可重复利用。探讨了充氧、ＦＴＤ浓度及ｐＨ值等对光催化氧化过程的影响。     

西湖底泥不同供氧条件下有机质降解及CO2与CH4释放速率的模拟研究

采用密闭培养实验装置于室温（２５℃左右）及ｐＨ为７５条件下，对西湖底泥中有机质完全降解及转化为ＣＯ２和ＣＨ４的速率进行了模拟研究．结果表明，在西湖湖水现有供氧水平（５０—８６ｍｇ（Ｏ２）／Ｌ）条件下，底泥中有机质完全降解的速率最为缓慢，培养期间（４２天）平均只有０７２ｍｇ（Ｃ）／（ｋｇ·ｄ）．当湖水供氧水平进一步上升（８６→１２０→１６０ｍｇ（Ｏ２）／Ｌ），ＣＯ２释放速率增加，最大值可达到８７ｍｇ（Ｃ）／（ｋｇ·周）；当湖水供氧水平下降（８６→０ｍｇ（Ｏ２）／Ｌ），ＣＨ４释放速率加快，最大值可达到４６ｍｇ（Ｃ）／（ｋｇ·周）．     

油田采出水中萘和芴的紫外光催化和·OH氧化降解过程影响因素与条件优化分析

在UV/H2O2和UV/Ti O2/H2O2两大氧化体系中,利用·OH的氧化原理,研究了不同影响因素(UV波长、p H、H2O2)对油田采出水中多环芳烃萘和芴降解效率的影响,找出处理萘和芴的最佳优化条件和组合。对萘和芴而言,UV/H2O2体系下双氧水的最佳条件分别为0.001,0.1 mol,UV/Ti O2/H2O2的优化组合是UVC,p H=8.5,O3=10g/L。实验结果表明:与UV/H2O2相比,UV/Ti O2/H2O2对油田采出水中的多环芳烃萘和芴的降解效果好。     

UV/草酸铁/H2O2法降解苯系物的研究

通过测定UV/草酸铁/H2O2法、UV/H2O2法和UV/H2O2/Fe2+法的单位电能消耗量(EE/O值)对比了三种方法降解苯系物的能量利用效率,得出UV/草酸铁/H2O2法不仅可以有效地降解苯系物,而且同其两种方法相比它对电能的利用效率最高;并分析了UV/草酸铁/H2O2法降解苯系物的反应历程。     

UV-catalytic treatment of spent caustic from ethene plant with hydrogen peroxide and ozone oxidation

The performance of UV/H2O2, UV/O3 and UV/H2O2/O3 oxidation systems for treating spent caustic from an ethylene plant was investigated, in UV/H2O2 system, with the increase of H202 dosage, removal efficiencies of COD and the ratio of biochemical oxygen demand(BOD) to chemical oxygen demand(COD) of the effluent were increased and a better performance was obtained than the H2O2 system alone. In UV/H2O2 system, removal efficiency of COD reach 68% under the optimum condition, and BOD/COD ratio was significantly increased from 0.22 to 0.52. In UV/O3 system, with the increase of O3 dosage, removal efficiency of COD and BOD/COD ratio were increased, and a better performance was obtained than the O3 system alone. Under the optimum condition, removal efficiency of COD was 54%, and BOD/COD ratio was significantly increased from 0.22 to 0.48. In UV/H2O2/O3 system, COD removal efficiency was found to be 22.0% higher than UV/O3 system.     

O3/UV降解水中的乙酸和硝基苯

利用O3 /UV和O3/H2O2降解了水中的乙酸,结果表明,在相同条件下处理60min后,O3/UV对乙酸的去除率仅比单独臭氧化处理提高了3%,而O3/H2O2在此条件下完全降解乙酸.O3/UV在处理硝基苯过程中却显示较好的氧化降解能力,通过分析表明,硝基苯降解过程中所产生的副产物H2O2对有机物的去除具有很重要的作用.因此,O3/UV氧化降解能力的提高可能有2方面的原因,紫外光对有机物的活化作用;中间产物H2O2催化臭氧分解产生了高活性的羟基自由基. 单独紫外光催化臭氧分解产生羟基自由基的效率极低.     

Naval derusting wastewater containing high concentration of iron, treated in UV photo-Fenton-like oxidation

The UV photooxidation with Fe(III) and H2O2 was employed to treat a naval derusting wastewater, which contains the high COD (chemical oxygen demand) and various metal concentrations exceptionally with high concentrations of citric acid and iron. Because of its iron containment, the Fenton-like reaction automatically took place with the added amount of H2O2. The decomposition rate was found in a sequence of: UV/H2O2/Fe(III) > UV/H2O2 > Fe(II)/H2O2. Two H2O2 injection methods, single and multiple points, were evaluated. The multiple-point H2O2 injection was more e cient to decompose the citric acid. The decomposition of the synthetic citric acid and the real derusting citric acid wastewater was also compared. The 93% COD reduction of the derusting wastewater was achieved using the UV/H2O2/Fe(III) treatment.     

水处理中的高级氧化技术

随着水质污染的日益严重,以产生大量自由基为主体的高级氧化技术越来越受到人们的关注.本文综述了O3/H2O2,O3/uV,H2O2/uV和催化臭氧化几种高级氧化技术在水处理中的应用及其反应机理,并对其发展前景进行了分析.     

UV/H2Ｏ2/微曝气联用工艺矿化内分泌干扰物BPA试验研究

采用UV/H₂Ｏ₂/微曝气工艺对水中内分泌干扰物双酚A(BPA)的降解与矿化进行了试验研究.该工艺是在UV/H₂Ｏ₂的基础上发展起来的一种新工艺,微曝气在UV光照射下产生了一定量的O₃,提高了·OH的发生率.本试验研究了UV光强、H₂Ｏ₂投加量以及pH值对BPA矿化速率的影响.结果表明,随着UV光强的增大,BPA的矿化速率呈线性增加;当H₂Ｏ₂投加量由5 mg/L增大到20 mg/L时,BPA矿化速率常数k由0.003 2上升到0.025 0;当pH为6.68时,在相同条件下BPA的矿化效果最好.在同一工况条件下,UV/H₂Ｏ₂/微曝气工艺降解BPA的速率远远大于其矿化速率,分析得出在开始反应阶段BPA首先被降解为小分子有机物,随着反应的进一步进行小分子有机物逐步被矿化为无机物.     

UV／H2O2／GAC与GAC处理微污染水的研究

文章进行了UV／H2O2／GAC和GAC系统用于微污染水深度处理的试验研究,结果表明：UV／H2O2／GAC对uV篮;和TOC均有良好的去除效果,当H2O2投量3．0mg／L,UV／H2O2反应器停留时间20min时,系统的COD和UV254去除率为44．6％和72．8％。UV／H2O2主要作用在于改善了GAC对有机物的吸附,产生了羟基自由基,从而提高了去除效果。     

Decolorization of Blue CL-BR dye by AOPs using bleach wastewater as source of H2O2

This research was focused on the investigation of the efficacy of advanced oxidation processes (Fenton,ozonation and UV/H_2O_2) for decolorization of reactive azo dye (Blue CL-BR) using bleach wastewater as possible source of H_2O_2.All the experiments were performed on the laboratory scale set-up.The results showed that colour removal efficiencies by UV or bleach (H_2O_2) alone were not so efficient.Fenton process with bleach wastewater was found to be the most effective at process conditions such as pH of 3 and H_2O_2/Fe~(2 ) ratio of 24:1,resulting in 64% colour removal.Almost complete colour removal,i.e.,99% and 95% were achieved by UV/H_2O_2 and UVfoleach wastewater in 30 and 60 min,respectively.Ozonation proved an efficient method for decolorization of Blue CL-BR dye at alkaline pH.It was possible to achieve 98% colour removal with 30 min of ozonation at pH 9.The colour removal of dye was found to follow first order kinetics.     

Chemical oxygen demand reduction in coffee wastewater through chemical flocculation and advanced oxidation processes

The removal of the natural organic matter present in coffee processing wastewater through chemical coagulation-flocculation and advanced oxidation processes （AOP） had been studied. The effectiveness of the removal of natural organic matter using commercial flocculants and UV/H202, UV/O3 and UV/H2O2/O3 processes was determined under acidic conditions. For each of these processes, different operational conditions were explored to optimize the treatment efficiency of the coffee wastewater. Coffee wastewater is characterized by a high chemical oxygen demand （COD） and low total suspended solids. The outcomes of coffee wastewater treatment using coagulation-flocculation and photodegradation processes were assessed in terms of reduction of COD, color, and turbidity. It was found that a reduction in COD of 67% could be realized when the coffee wastewater was treated by chemical coagulation-flocculation with lime and coagulant T-1. When coffee wastewater was treated by coagulation-flocculation in combination with UV/H2O2, a COD reduction of 86% was achieved, although only after prolonged UV irradiation. Of the three advanced oxidation processes considered, UV/H2O2, UV/O3 and UV/H2O2/O3, we found that the treatment with UV/H2O2/O3 was the most effective, with an efficiency of color, turbidity and further COD removal of 87%, when applied to the flocculated coffee wastewater.