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中国环境科学 1998年第4期18卷 353-355页

作者：蹇兴超吴天宝 mathias ernst 清华大学核能技术设计研究院德国柏林工业大学水质控制系

城市污水处理厂出水的纳米过滤浓缩液较难直接生物处理。臭氧氧化该浓缩液降低ＤＯＣ的速度较慢，但是可以有效地破坏该浓缩液中含苯环和有色基团的大分子有机物，显著增加小分子有机物的相对含量，从而增大其可生化降解性能。研究发现... 详细信息

城市污水处理厂出水的纳米过滤浓缩液较难直接生物处理。臭氧氧化该浓缩液降低ＤＯＣ的速度较慢，但是可以有效地破坏该浓缩液中含苯环和有色基团的大分子有机物，显著增加小分子有机物的相对含量，从而增大其可生化降解性能。研究发现臭氧的投量为５２ｍｇ／Ｌ左右时，臭氧化改善该纳米过滤浓缩液的可生化降解性能的效果最佳。

关键词：过滤氧化好氧生物处理污水处理厂废水处理

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How aromatic dissolved organic matter differs in competitiveness against organic micropollutant adsorption

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Environmental Science and Ecotechnology 2024年第5期21卷 92-102页

作者： Qi Wang Oliver JLechtenfeld Luuk CRietveld Jonas Schuster mathias ernst Roberta Hofman-Caris Jan Kaesler Chunmiao Wang Min Yang Jianwei Yu Frederik Zietzschmann Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of Sciences100085BeijingChina Delft University of Technology Department of Water ManagementPO Box 50482600GADelftthe Netherlands Department of Analytical Chemistry Research Group BioGeoOmicsHelmholtz Centre for Environmental ResearchUFZPermoserstr.1504318LeipzigGermany Berliner Wasserbetriebe LaboratoryMotardstr.3513629BerlinGermany Institute for Water Resources and Water Supply Hamburg University of TechnologyAm Schwarzenberg-Campus 321073HamburgGermany KWR Watercycle Research Institute 3433PENieuwegeinthe Netherlands ProVISCentre for Chemical Microscopy Helmholtz Centre for Environmental ResearchUFZPermoserstr.1504318LeipzigGermany Wageningen University and Research Department of Environmental TechnologyBornse Weilanden 96708 WGWageningenthe Netherlands University of Chinese Academy of Sciences 100049BeijingChina

Activated carbon is employed for the adsorption of organic micropollutants(OMPs)from water,typically present in concentrations ranging from ng L1 to mg L***,the efficacy of OMP removal is considerably deteriorated due to competitive adsorption from background dissolved organic matter(DOM),present at substantially higher concentrations in mg L*** the characteristics of competitive DOM is crucial in predicting OMP adsorption efficiencies across diverse natural *** weight(MW),aromaticity,and polarity influence DOM *** the aromaticity-related metrics,such as UV254,of low MW DOM were proposed to correlate with DOM competitiveness,the method suffers from limitations in understanding the interplay of polarity and aromaticity in determining DOM ***,we elucidate the intricate influence of aromaticity and polarity in low MW DOM competition,spanning from a fraction level to a compound level,by employing direct sample injection liquid chromatography coupled with ultrahigh-resolution Fouriertransform ion cyclotron resonance mass *** exchange resin pre-treatment eliminated 93%of UV254-active DOM,predominantly aromatic and polar DOM,and only minimally alleviated DOM *** characterization revealed that nonpolar molecular formulas(constituting 26%PAC-adsorbable DOM)with medium aromaticity contributed more to the DOM *** analysis indicated that the competitiveness of highly aromatic LMW DOM compounds was strongly counterbalanced by increased *** aromaticity-derived p-p interaction cannot facilitate the competitive adsorption of hydrophilic DOM *** results underscore the constraints of depending solely on aromaticity-based approaches as the exclusive interpretive measure for DOM *** a broader context,this study demonstrates an effect-oriented DOM analysis,elucidating counterbalancing interactions of DOM molecular properties

关键词： Activated carbon Organic micropollutants Dissolved organic matter(DOM) Multi-component adsorption Fourier-transform ion cyclotron resonance mass spectrometry(FT-ICR-MS)

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Advanced HP/IP Blading Technologies for the Design of Highly Efficient Steam Turbines

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热力透平 2004年第300期3卷 209-215页

作者： mathias Deckers ernst Wilhelm Pfitzinger Wilfried Ulm Siemens AG Power Generation (PG) Muelheim an der Ruhr Germany Siemens AG Power Generation (PG) Muelheim an der Ruhr Germany Siemens Westinghouse Power Corporation Orlando-Florida USA

This paper presents Siemens’ latest improvements in steam turbine blading and blading design tools. The technology offers improved performance and highest efficiencies for a wide range of steam turbine applications.

关键词：蒸汽轮机西门子公司叶片装置 HP/IP

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