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Removal of polycyclic aromatic hydrocarbons from different soil fractions by persulfate oxidation

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Journal of Environmental Sciences 2019年第4期31卷 239-246页

作者： Xiaoyong Liao Qiongzhi Liu You Li Xuegang Gong hongying cao Key Laboratory of Land Surface Pattern and Simulation Beijing Key Laboratory of Environmental Damage Assessment and RemediationInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of Science University of Chinese Academy of Sciences

Removal of polycyclic aromatic hydrocarbons(PAHs) from different soil fractions of contaminated soil was investigated by using activated persulfate oxidation remediation in our research. The results showed that the light fraction, which accounted for only 10% of the soil, contained 30% of the PAHs at a concentration of 4352 mg/kg. The heavy fraction contained more high-molecular-weight PAHs, and the total PAH concentration was 625 mg/kg. After being oxidized, the removal rate of PAHs was 39% in the light fraction and nearly 90% in the heavy fraction. Among the different fractions of the heavy fraction,humic acid contained the highest concentration of PAHs, and consequently, the highest removal efficiency of PAHs was also in humic acid. Compared with the light fraction, the heavy fraction has more aromatic compounds and those compounds were broken down during the oxidation process, which may be the removal mechanism involved in the oxidation of high-ring PAHs. Similarly, the enhancement of C= C bonds after oxidation can also explain the poor removal of high-ring PAHs in the light fraction. These results imply that different fractions of soil vary in composition and structure, leading to differences in the distribution and oxidation efficiencies of PAHs.

关键词： Soil fraction Persulfate oxidation PAHs Organic matter Bond

Estimation of ammonia nitrogen load from nonpoint sources in the Xitiao River catchment, China

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Journal of Environmental Sciences 2008年第10期20卷 1195-1201页

作者： LIANG Tao WANG Shanna cao hongying ZHANG Chaosheng LI Haitao LI Hengpeng SONG Wenchong CHONG Zhongyi Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Department of Geography National University of Ireland Galway Ireland Nanjing Institute of Geography & Limnology Chinese Academy of Sciences Nanjing 210008 China

Ammonia nitrogen (NH4+-N) is one of the three main forms of total nitrogen (TN). Most studies have estimated the load of TN from nonpoint sources instead of one specific form. The relationship between land use and concentrations of NH4+-N in runoff was analyzed using the hydraulic analysis functions of a Geographic Information Systems (GIS), and the annual loads of NH4+-N in the Xitiao River catchment were estimated according to model results. The results suggested that the calculated annual loads of NH4+-N...

关键词： nonpoint source pollution NH4+-N Geographic Information systems (GIS) output rate load

Three-dimensional delineation of soil pollutants at contaminated sites: Progress and prospects

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Journal of Geographical Sciences 2022年第8期32卷 1615-1634页

作者： TAO Huan LIAO Xiaoyong cao hongying ZHAO Dan HOU Yixuan Institute of Geographic Sciences and Natural Resources Research CASBeijing 100101China Chinese Academy of Environmental Planning Beijing 100012China University of Chinese Academy of Sciences Beijing 100049China

The precision remediation and redevelopment of contaminated sites are crucial issues for improving the human settlement and constructing a beautiful China. Three-dimensional delineation of soil pollutants at contaminated sites is a prerequisite for precision remediation and redevelopment. However, a contaminated site is a three-dimensional complex system coupling multiple spatial elements above-and under-ground. The complexity incurs high uncertainties about the three-dimensional delineation of soil pollutants based on sparse borehole and spatial statistics and inference models. This paper first systematically reviewed the objectives of fine three-dimensional delineation of soil pollutants, the sampling strategies for soil boring, the commonly used models for delineating soil pollutants, and the relevant cases of applying these models at contaminated sites. We then summarized the effects of borehole data and three-dimensional models on soil pollutants' delineation results from biased characteristics and nonstationary conditions. The present research status and related issues on correcting the biased characteristics and nonstationary conditions were analyzed. Finally, based on the problems and challenges, we suggested the three-dimensional delineation of soil pollutants in the underground “black box” for future research from the following six priority areas: multi-scenarios, nonstationary, non-linearity, multi-source data fusion, multiple model coupling, and the delineation of co-contaminated sites.

关键词： contaminated sites soil pollution three-dimensional delineation model sparse and biased nonstationarity

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儒家文化中的和谐观及其启示

湖北社会科学 2010年第1期 96-98,105页

作者：曹鸿英开封教育学院河南开封475004

作为中国传统文化主干的儒家文化,其以人为本、普遍和谐等基本精神对培养现代人注重社会利益、关心他人需求、保持人与自然以及社会之间的和谐仍具有正面效应和积极作用。应该科学地分析研究儒学文化,使之成为现代社会的有用财富。

关键词：儒家文化和谐现代社会启示

Simulating the transfer and fate of hexachlorocyclohexane in recent 50 years in Beijing, China

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Science China Earth Sciences 2005年第12期48卷 2203-2213页

作者： cao hongying1, LIANG Tao1 & TAO Shu2 1. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China 2. Laboratory for Earth Surface Processes, Peking University, Beijing 100871, China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing China Laboratory for Earth Surface Processes Peking University Beijing China

Taking Beijing as a study area, a dynamic fugacity model was used to simulate the transfer and fate of technical HCHs according to the physic-chemical properties of the studying environment and HCH isomers. Dynamic changes of the transfer fluxes and concentrations of HCH isomers during 1952―2003 were simulated and the model results suggest good agreement between the calculated and measured concentrations of HCH isomers. During 1952―1983, the average input and output amount of HCHs through agricultural application and degradation are 130 t and 150 t respectively. The dominant transfer processes of HCHs in the study area are air-soil deposition, soil erosion and soil-air diffusion, transfer fluxes of these processes are 80 t?a?1, 16 t?a?1 and 11 t?a?1, which account for 92% of total transfer fluxes of HCHs isomers. There were approximately 253t HCHs in all environmental compartments of the study area during this period and 97% of which existed in soil compartment. Air and water advection became the dominant input sources of HCHs after 1984 when the application of technical HCHs was prohib-ited, concentration of HCHs quickly descended to a quite low level in several years. Total amount of HCHs isomers remaining in the study area environment now is less than 5% that before 1983, and this percentage may descend to 0.5% after 20 years by prediction.

关键词： fugacity model, hexachlorocyclohexane, compartment, transfer flux, fate.

1950年以来BHC在杭州环境中积累、迁移与残留动态的模拟研究

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环境科学学报 2005年第4期25卷 475-482页

作者：曹红英梁涛陶澍中国科学院地理科学与资源研究所北京100101 北京大学环境学院地表过程分析与模拟教育部重点实验室北京100871

根据区域环境背景值、BHC施用量及其物化性质参数 ,以逸度模型为工具 ,建立了描述BHC在杭州多介质环境中迁移转化的动态模型 .通过模拟结果了解各时期BHC在气、水、土壤、沉积物、鱼、植物叶和根等 10种环境介质中的积累、迁移和残留情... 详细信息

根据区域环境背景值、BHC施用量及其物化性质参数 ,以逸度模型为工具 ,建立了描述BHC在杭州多介质环境中迁移转化的动态模型 .通过模拟结果了解各时期BHC在气、水、土壤、沉积物、鱼、植物叶和根等 10种环境介质中的积累、迁移和残留情况 ,并考虑了环境介质物理性质差异、温度对BHC热力学参数的影响 ,及对其环境行为和归宿的影响 .模型模拟了自 195 2年BHC在研究区域大量施用以来 ,在环境中逐渐累积并达到稳定 ,因BHC禁用又逐渐消失的过程中 ,BHC在各环境介质中的分布、浓度及其在毗邻介质间迁移通量的动态变化 .对模拟结果与实测BHC浓度的验证表明二者吻合较好 .虽然杭州地区有机氯农药用量远高于其它地区 ,但由于该区温度较高有利于BHC的降解和挥发 ,目前BHC的浓度和残留量均低于北方地区 .该研究的成果可用于有机污染物暴露风险评价。

关键词： BHC 逸度模型浓度迁移通量参数灵敏度蒙特卡罗模拟杭州市环境介质热力学参数

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基于物联网的输煤设备监测系统设计

煤炭技术 2022年第4期41卷 189-192页

作者：李莉曹红英开封大学电子电气工程学院河南开封475000

针对输煤设备现场人工监测方式效率较低、实时性较差等不足,通过分析输煤设备输煤过程以及监测内容,设计了一种基于物联网的设备监测系统,并结合实际需求对硬件部分进行选型。系统采用自定义通信协议方式来实现数据的封包与解包,利用Soc... 详细信息

针对输煤设备现场人工监测方式效率较低、实时性较差等不足,通过分析输煤设备输煤过程以及监测内容,设计了一种基于物联网的设备监测系统,并结合实际需求对硬件部分进行选型。系统采用自定义通信协议方式来实现数据的封包与解包,利用Socket中TCP的3次握手建立连接,来确保数据传输的安全性与稳定性。根据监测系统数据库概念模型的实体-联系关系建立相应的基础信息表,采用多种方式优化数据库,提升其响应速度。实验表明,系统运行较为稳定,传输效率较高,满足监测实时性要求;数据库CPU使用率较低,响应速度快,能够进一步提升设备的监测效率。

关键词：物联网输煤设备监测系统

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场地土壤污染物含量三维刻画的研究进展

地理学报 2022年第3期77卷 559-573页

作者：陶欢廖晓勇曹红英赵丹侯艺璇中国科学院地理科学与资源研究所北京100101 中国科学院大学北京100049 生态环境部环境规划院北京100012

污染场地精准修复与再开发利用是改善人居环境、建设美丽中国所面临的重要课题。场地土壤污染物含量三维刻画是精准修复与再开发利用的基础。然而,场地环境是一个耦合地上地下多要素的复杂三维系统,使得基于离散稀疏土壤钻井样点和空间... 详细信息

污染场地精准修复与再开发利用是改善人居环境、建设美丽中国所面临的重要课题。场地土壤污染物含量三维刻画是精准修复与再开发利用的基础。然而,场地环境是一个耦合地上地下多要素的复杂三维系统,使得基于离散稀疏土壤钻井样点和空间统计推断模型的场地土壤污染物含量刻画结果存在着较大的不确定性。本文梳理了场地土壤污染物含量三维精细刻画的目的和钻井布设方式、常用的三维刻画模型和相关案例,分析了土壤钻井数据的“稀疏偏性”特征对刻画结果的影响,总结了“非平稳浓度场”条件下三维土壤污染物含量插值模型的研究现状和存在问题。在此基础上,从多情景、非平稳、非线性、多源数据融合、多类模型耦合和复合污染刻画6个方面,展望了场地地下“黑箱”环境土壤污染物含量精细刻画的研究趋势。

关键词：污染场地土壤污染三维刻画模型稀疏偏性非平稳

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内置钢板抗剪连接件方钢管混凝土柱推出试验

华中科技大学学报（自然科学版） 2018年第3期46卷 108-115页

作者：乔崎云张雯雯曹万林董宏英北京工业大学建筑工程学院

为了定量化研究带抗剪连接件方钢管混凝土界面的抗剪承载力,设计了10个内壁设置抗剪连接件的方钢管混凝土试件,并进行推出试验,其中9个为钢板条连接件试件,1个为钢筋条连接件对比试件.试验设计参数包括钢管壁厚（宽厚比）、抗剪连接件... 详细信息

为了定量化研究带抗剪连接件方钢管混凝土界面的抗剪承载力,设计了10个内壁设置抗剪连接件的方钢管混凝土试件,并进行推出试验,其中9个为钢板条连接件试件,1个为钢筋条连接件对比试件.试验设计参数包括钢管壁厚（宽厚比）、抗剪连接件厚度、抗剪连接件层数、抗剪连接件层间间距及抗剪连接件种类.研究结果表明：钢管宽厚比的降低、连接件厚度的增大均能有效地提高极限承载力及初始刚度;双层连接件试件的极限承载力高于单层连接件试件,极限承载力提高程度与钢板条间距有较大关系;在相等用钢量的情况下,相同层数的钢筋条试件相比较钢板条试件,极限承载力提高了87%,且延性较好;提出的计算方法所得的理论计算值与试验结果较为相符.

关键词：方钢管混凝土推出试验抗剪连接件抗剪承载力延性理论计算内置钢板