非均相臭氧催化氧化用于难降解工业废水中试处理对比研究

基于南通市某工业园区难降解废水深度处理需求，以Fe OOH为主的铁基催化剂搭建了一套处理规模为20 m3/d非均相臭氧催化氧化中试装置，优化了系统运行参数，考察了中试装置长期运行过程中的有机物处理效果、投资和运行成本，并与均相臭氧催化氧化中试装置和三相催化氧化中试装置进行了对比。结果表明，非均相臭氧催化氧化系统在臭氧浓度200 mg/L、臭氧投加气量2 L/min、催化反应时间30 min时实现了57.6%±7.3%的COD去除率，优于均相臭氧催化氧化系统和三相催化氧化系统，且其占地面积小，去除单位COD的投资和运行成本为16.7元/kg COD，仅为均相臭氧催化氧化系统和三相催化氧化系统的70%左右，综合处理效能更高，具备难降解工业废水处理潜力。     

一种组合式除臭装置在排水泵站中的应用

随着环保力度的加大,以及人们对环境要求的不断提高,恶臭污染控制已成为环境领域极为关注的问题。以上海某污水泵站为试点,采用生物-活性炭工艺、生物-臭氧处理工艺、生物-植物液工艺、生物-离子交换纤维工艺,共4种不同的复合式生物除臭工艺处理该污水泵站的恶臭气体,研究了不同工况参数下的处理系统对恶臭污染物的去除效果,并对其进行了优化。     

臭氧用于汽车富氧助燃可行性研究

近年来,汽车富氧助燃技术的研究从未停止,有部分研究者尝试将臭氧用于汽车富氧助燃。文章的目的在于:探讨臭氧用于汽车富氧技术是否可行,介绍了臭氧的性质与应用,并从臭氧的助燃性、臭氧助燃的安全性、臭氧助燃的经济性及臭氧助燃的可控性等方面探讨了臭氧用于汽车富氧助燃的可行性。最后得出:在新形势下,用于汽车的臭氧助燃技术需要审慎处理。     

天津海河口南岸地区污水处理工程臭氧发生器的选择

将臭氧应用于污水处理具有反应迅速、流程简单、无二次污染等诸多优点,因而受到了人们的重视,并得到了更加广泛的应用.天津市滨海新区海河口南岸地区污水处理工程设计规模为30000 t/d,污水处理过程中需投加臭氧作为消毒和高级氧化的措施.污水处理过程中的臭氧一般由臭氧发生器制取.臭氧发生器主要有板式和管式两种类型.该项目设计...     

臭氧配合白及治疗压疮16例

目的:观察臭氧配合白及治疗压疮的效果。方法:16例Ⅲ、Ⅳ压疮压疮患者用臭氧水冲洗、臭氧气体熏蒸、臭氧油和白及粉外敷,皮肤护理、饮食护理。结果:16例压疮均愈合。结论:臭氧配合白及治疗压疮有很好疗效。     

污水处理工程中的臭氧技术

臭氧技术已经广泛用于饮用水消毒,近年来臭氧在污水和再生水处理中的研究及应用也开始崭露头角。介绍臭氧的基本性质,氧化、消毒的机理,以及消毒效果的影响因素,为污水、再生水处理中臭氧的应用提供参考。     

基于高级氧化的垃圾渗滤液处理厂提标改造技术研究

该文针对上海某已建垃圾渗滤液处理厂在新标准下出水不能稳定达标的问题,通过小试和中试研究探索合理的提标改造技术路线.小试研究结果表明臭氧投加量达到1.6 g/L时可直接将COD处理至100 mg/L以下,而臭氧投加量达到0.4g/L时,难降解COD组分即已低于100 mg/L;垃圾渗滤液处理厂出水经过混凝沉淀,进入高级氧化和生化结合的SHAS系统.在臭氧投加量为0.8 g/L的情况下,出水平均COD浓度为97.0 mg/L;垃圾渗滤液处理厂进水经过SBR＋混凝沉淀＋后置反硝化＋SHAS流程处理之后,出水COD、NH4＋-N和TN平均浓度可满足《生活垃圾填埋场污染控制标准》（GB 16889-2008）排放标准.研究结果表明以SHAS高级氧化为核心的提标改造技术可有效去除垃圾渗滤液中的难降解有机物,为垃圾渗滤液的达标处理奠定基础.     

工业废水处理方法及研究进展

文章综述了近几年工业废水处理的方法及其在工业废水处理中的实际应用,并对臭氧催化氧化处理工业废水的发展趋势进行了展望。     

国内首台120kg/h大型臭氧发生器在青岛通过科技成果评估

<正>2012年6月9日,"十二五"国家重大科技专项、青岛市科技发展计划关键技术攻关项目——"大型臭氧发生器设备研制及产业化"科技成果评估会议在青岛市举行,来自清华大学、上海市政工程设计研究总院(集团)有限公司、臭氧行业等国内臭氧技术领域的资深专家,参加了项目的现场测试和科技     

柴油机醛酮污染物的测量方法研究

采用DNPH衍生法和高效液相色谱(HPLC)技术对生物柴油发动机尾气中的羰基化合物(醛、酮)进行了捕集和分离测定,优化了液相色谱的分离条件,考察了臭氧对检测结果的影响以及采样柱的洗脱效率。结果表明,采用梯度淋洗可以得到较好的分离效果,尾气中的臭氧会导致检测精度降低17%,乙腈的洗脱效率可达90%以上,DNPH衍生法是醛、酮类物质分析测定较为理想的方法。     

Évaluation de mesures d’urgence potentielles en cas de pic de pollution atmosphérique en Alsace

Ten years after their implementation, the Alsatian prefectorial orders concerning emergency measures applied in case of exceedance of alert thresholds for ozone, nitrogen dioxide and, a pioneer feature of the French region, the PM, required an update. In 2007, the ASPA was mandated by the Bas-Rhin and the Haut-Rhin Prefectures to define and assess new emergency measures. The Alsatian emissions inventory first identified the activity sectors which would be potentially targeted by the measures, and then calculated the associated emission reductions. In association with the transportation agency, 3 scenarios were retained for concentration simulation: limitation of the speed limit at 70 km/h on freeways and major urban roads, alternated traffic in towns, and a combination of both measures. Then, an integrated modelling chain, including the CHIMERE and ADMS-Urban models, was allowed to simulate, for the three scenarios, the variation of ozone during the heat wave of 2003, and the variation of nitrogen dioxide and the PM during wintry episodes, for the cities of Strasbourg, Colmar and Mulhouse. Finally, the urban cartographies of the impact of the scenarios on the concentrations were crossed with the georeferenced residence data to estimate the population affected by threshold exceedances in each case. A weak impact was obtained for speed limit reduction, while it was significant for the alternated traffic; for the PM, the concentrations fell about 10 μg/m³ and the population exposed to threshold exceedance fell by a factor 4; for nitrogen dioxide, the concentrations were lowered by several dozen μg/m³ and the exposed population fell by a factor 2; whereas for ozone, we noted a slight increase in the concentration and the exposed population. At the same time as the implementation of the newly developed emergency measures, the evolution of knowledge and modelling shows that it would be technically justified to differentiate the measures, pollutant by pollutant.     

Experimental study on performance of automotive air conditioning system using R-152a refrigerant

Recently, as climate changes have manifested worldwide, every country is making efforts to prevent ozone depletion and global warming. In the automotive industry, R-134a refrigerant is widely used in air conditioning systems because it has zero ozone depletion potential (ODP). Unfortunately, its global warming potential (GWP) is high. Therefore, alternative refrigerants are needed as a replacement for R-134a. R-152a is considered to be one of the better alternative refrigerants due to zero ODP and low GWP. In this paper, the performance of an automotive air conditioning system using R-134a and one using R-152a are compared experimentally at the bench level. The experimental apparatus simulated a real automotive air conditioning system consisting of a cabin and engine room structure. The cooling capacity, condensing capacity, coefficient of performance (COP) and power consumption characteristics of the automotive air conditioning system are evaluated by changing the air velocity entering the condenser and the compressor rotation speed with the optimized refrigerant charge amount. Also, the performance of the R-152a system was investigated by changing the thermostatic expansion valve which is set of values. The results of this study show that the R-152a system is slightly better than the R-134a system, not only under driving conditions but also under idling condition. R-152a refrigerant thus shows promise as an alternative refrigerant to replace the current standard, R-134a, in automotive air conditioning systems.     

塑料排水板与土工格栅联合使用处理桥头软基

介绍塑料排水板与土工格栅联合使用处理桥头软基工后不均匀沉降的设计及施工。塑料排水板与土工格栅联合使用在桥头软基处理上可获较理想效果。     

粉喷桩在软基处理中的研究和应用

该文介绍了泰安肥梁公路东平段J4、J5标段采用粉喷桩处理软基的试验研究、施工工艺及施工质量检测控制等,对粉喷桩处理软基施工中遇到的问题提出了处理方法。     

全站仪测量道路横断面的方法和数据处理

介绍了利用全站仪测量道路横断面的方法和编程处理道路横断面测量数据的一些技巧。通过编程处理横断面测量数据,可提高工作效率和减轻劳动强度。     

浙江某工业型城镇综合污水处理厂工程设计

浙江某工业型城镇污水处理厂采用集中处理的方式,主要接收县城内的生活污水以及周边工业区预处理后满足入网标准的工业废水,针对污水来水特性采用了水解酸化、多模式AAO、高效沉淀、深床滤池及臭氧催化氧化的处理工艺,通过介绍工艺流程以及工程的设计参数及特点,并结合实际运行的可靠性,为工业型城镇这种工业废水占比较大的市政污水处理厂设计提供一个新的思路。