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SSRN 2024年

作者： Wang, Hao Lian, Mengyuan Chu, Haibo Chen, Bin Zhou, Jinjun Faculty of Architecture Civil and Transportation Engineering Beijing University of Technology Beijing100124 China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University 100875 China

The urbanization and climate change have intensified the challenges to urban drainage infrastructure. Researching the flood resilience of drainage systems, and understanding their resistance and recovery processes during disasters, holds significant scientific importance for resilient city studies. This research has proposed an integral-based method to calculate the UDS resilience. Firstly, we computed the system performance curve by the integral-based method and compared calculation results with the simplified rectangular method. Subsequently, we obtained the indicators to represent the resilience of the UDS process for comprehensive evaluations by nearly 70 years of historical measured rainfall data. Lastly, the Spearman correlation analysis was employed to assess the impact of rainfall characteristics on resilience. The results indicated that the resilience calculated by the integral-based method is more realistic compared with the simplified rectangular method. The resilience of the UDS is influenced by characteristics of the catchments. Rainfall, average rainfall intensity, and peak rainfall intensity have a greater impact on resilience. © 2024, The Authors. All rights reserved.

关键词： Floods

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Repercussions of COVID-19 pandemic on solid waste generation and management strategies

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Frontiers of environmental Science & Engineering 2021年第6期15卷 241-258页

作者： Yangyang Liang Qingbin Song Naiqi Wu Jinhui Li Yuan Zhong Wenlei Zeng Macao Institute of Systems Engineering Macao University of Science and TechnologyMacao 999078China Macao Environmental Research Institute Macao University of Science and TechnologyMacao 999078China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

It has been over ten months since the beginning of the 2019 coronavirus disease(COVID-2019),and its impact on solid waste management,especially medical waste,is becoming *** study systematically reviews the potential influences of the COVID-19 pandemic on medical waste,personal protection equipment waste and municipal solid waste(MSW),and discusses the corresponding measures and policies of solid waste management in typical *** results show that the generation of medical waste from the pandemic increased significantly,with 18%‒425%*** is estimated that the daily output of COVID-19 medical waste increased from 200 t/d on Feb.22 to over 29000 t/d at the end of September 2020 throughout the *** use of personal protective equipment will continue to grow in the long-term,while the blockade and isolation measures greatly reduced the volume of commercial waste,especially for tourist cities,and part of this waste was transferred to household ***’attitudes and behavior toward food waste have changed due to the COVID-19 *** response to the pandemic,international organizations and several countries have issued new policies and guidelines and adjusted their management strategies for medical waste and MSW *** pandemic has brought specific challenges to the disposal capacity of medical waste *** has also brought about the stagnation of policies related to the reduction of plastic products and waste *** study will provide some useful information for managers and governmental officials on effective solid waste management during and after the COVID-19 pandemic.

关键词： COVID-19 Medical waste Personal protective equipment Municipal solid waste Waste management

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Functional profiles of soil microbial communities in the alpine and temperate grasslands of China

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Grassland Research 2022年第1期1卷 3-13页

作者： Yunfeng Yang Jizhong Zhou Xue Guo State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijingChina Institute for Environmental Genomics and Department of Microbiology and Plant Biology University of OklahomaNormanOklahomaUSA School of Civil Engineering and Environmental Sciences University of OklahomaNormanOklahomaUSA Earth and Environmental Sciences Lawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA

Grassland ecosystems in cold regions are typical of short growing seasons and limited primary productivity,rendering soil microorganisms as major ecosystem engineers in governing biogeochemical *** warming and extensive livestock grazing have dramatically influenced soil microbial diversity and function in grassland worldwide,but it remains elusive how functional microbial communities exist and respond to global ***,we present a review to highlight similarities and differences in soil functional microbial communities between alpine grasslands in the Qinghai-Tibet Plateau and temperate grasslands in the Inner Mongolian Plateau,both of which are major plateaus in China,but differ substantially in *** show that many specialized functional groups thrive under harsh conditions,exhibiting a high functional *** community compositions mirror the heterogeneity and complexity of grassland ***,functional microbial responses to environmental changes have been extremely variable,with few consistent patterns across both *** we identify a lack of technical standardization that prevents in-depth comparative studies for functional microbial communities,we conclude the review by outlining several research gaps that need to be filled in future studies.

关键词： climate changes functional microbial communities grassland soils grazing Inner Mongolian Plateau Qinghai-Tibet Plateau

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An overview for monitoring and prediction of pathogenic microorganisms in the atmosphere

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Fundamental Research 2024年第3期4卷 430-441页

作者： Jianping Huang Danfeng Wang Yongguan Zhu Zifeng Yang Maosheng Yao Xiaoming Shi Taicheng An Qiang Zhang Cunrui Huang Xinhui Bi Jiang Li Zifa Wang Yongqin Liu Guibing Zhu Siyu Chen Jian Hang Xinghua Qiu Weiwei Deng Huaiyu Tian Tengfei Zhang Tianmu Chen Sijin Liu Xinbo Lian Bin Chen Beidou Zhang Yingjie Zhao Rui Wang Han Li Collaborative Innovation Center for Western Ecological Safety College of Atmospheric SciencesLanzhou UniversityLanzhou 730000China Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China National Clinical Research Center for Respiratory Disease Guangzhou Institute of Respiratory HealthFirst Affiliated Hospital of Guangzhou Medical UniversityState Key Laboratory of Respiratory Disease(Guangzhou Medical University)Guangzhou 510230China College of Environmental Sciences and Engineering Peking UniversityBeijing 100871China China CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijing 100021China Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing 100084China Vanke School of Public Health Tsinghua UniversityBeijing 100084China State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Center for Pan-third Pole Environment Lanzhou UniversityLanzhou 730000China College of Atmospheric Sciences Lanzhou UniversityLanzhou 730000China School of Atmospheric Sciences Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 510640

Corona virus disease 2019(COVID-19)has exerted a profound adverse impact on human *** have demonstrated that aerosol transmission is one of the major transmission routes of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Pathogenic microorganisms such as SARS-CoV-2 can survive in the air and cause widespread infection among *** monitoring of pathogenic microorganism transmission in the atmosphere and accurate epidemic prediction are the frontier guarantee for preventing large-scale epidemic *** of pathogenic microorganisms in the air,especially in densely populated areas,may raise the possibility to detect viruses before people are widely infected and contain the epidemic at an earlier *** multi-scale coupled accurate epidemic prediction system can provide support for governments to analyze the epidemic situation,allocate health resources,and formulate epidemic response *** review first elaborates on the effects of the atmospheric environment on pathogenic microorganism transmission,which lays a theoretical foundation for the monitoring and prediction of epidemic ***,the monitoring technique development and the necessity of monitoring pathogenic microorganisms in the atmosphere are summarized and ***,this review introduces the major epidemic prediction methods and highlights the significance to realize a multi-scale coupled epidemic prediction system by strengthening the multidisciplinary cooperation of epidemiology,atmospheric sciences,environmental sciences,sociology,demography,*** summarizing the achievements and challenges in monitoring and prediction of pathogenic microorganism transmission in the atmosphere,this review proposes suggestions for epidemic response,namely,the establishment of an integrated monitoring and prediction platform for pathogenic microorganism transmission in the atmosphere.

关键词： Aerosol transmission Epidemic monitoring methods Epidemic prediction modelsEpidemic response Multidisciplinary cooperation

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Characteristics of runoff and sediment yield for two typical erodible soils in southern China

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International Journal of Sediment Research 2022年第5期37卷 653-661页

作者： Xuchao Zhu Yin Liang Lili Qu Longxi Cao Zhiyuan Tian Tong Liu Meng Li State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences College of Advanced Agricultural Sciences University of Chinese Academy of Sciences College of Ecology and Environment Chengdu University of Technology National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of IntegratedAgro-environmental Pollution Control and Management Institute of Eco-environmental and Soil Sciences Guangdong Academy of Sciences Hydrology and Water Resources Investigation Bureau of Jiangsu Province

Granite red soil(GRS) and Quaternary red clay(QRC) are two typical erodible soils in the red-soil region of southern China. Analytical and comparative studies of the characteristics of runoff and sediment yield for the two soils at various slopes are currently needed. The purpose of the current study was to clarify the characteristics of runoff and sediment yield for GRS and QRC at different slopes and to establish models for estimating sediment yield for the two soils. Forty-eight runoff microplots with four slopes(5°, 15°, 25°, and 35°) and two soils(GRS and QRC) were established and exposed to natural rainfall. Runoff and sediment yield were measured 10 times during the study period. Runoff and sediment yield for the two soils under the various slopes had similar temporal variations, and both increased with prior cumulative erosive rainfall. Runoff for GRS and QRC was moderately temporally variable, with coefficients of variation(CVs) from 46.2% to 60.6%, and sediment yield for QRC was strongly temporally variable, with CVs from 114.8% to 145.8%. Sediment yield for GRS increased with slope, but sediment yield for QRC first increased and then decreased, with a calculated inflection point of 18°, but runoff for both soils decreased with slope. The CVs of both runoff and sediment yield with slope for the two soils ranged from 3.6% to 88.0%, lower than the temporal variabilities, indicating that rainfall may have a larger impact than slope on runoff and sediment yield for QRC and GRS. Under the various slopes, runoff and sediment yield for both soils increased with rainfall and sediment yield increased with runoff, but the proportions of effective rainfall and runoff differed. Pedotransfer-function models based on rainfall, runoff, and slope accurately estimated sediment yield for the two soils, with the model fit coefficient of determination(R2) > 0.81 and the R2for verification >0.79. These results improve the understanding of the laws governing erosion for differe

关键词： Runoff and sediment characteristics Sediment-yield simulation Granite red soil Quaternary red clay Pedotransfer function Red-soil region

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Vertical Profiles of Volatile Organic Compounds in Suburban Shanghai

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Advances in Atmospheric Sciences 2021年第7期38卷 1177-1187页

作者： Yuhan LIU Hongli WANG Shengao JING Ming ZHOU Shenrong LOU Kun QU Wanyi QIU Qian WANG Shule LI Yaqin GAO Yusi LIU Xiaobing LI Zhong-Ren PENG Junhui CHEN Keding LU State Key Joint Laboratory of Environment Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental SciencesShanghai 200233China State Key Laboratory of Severe Weather&Key Laboratory for Atmospheric Chemistry of China Meteorology Administration Chinese Academy of Meteorological SciencesBeijing 100081China Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality Institute for Environmental and Climate ResearchJinan UniversityGuangzhou 510632China International Center for Adaptation Planning and Design College of DesignConstruction and PlanningUniversity of FloridaGainesville 32611FLUSA Sichuan Academy of Environmental Science Sichuan 610041China

As Volatile Organic Compounds(VOCs)are one of the precursors of ozone,their distribution and variable concentrations are highly related to local ozone pollution *** this study,we obtained vertical profiles of VOCs in Shanghai’s Jinshan district on 8 September and 9 September in 2016 to investigate their distribution and impact on local atmospheric oxidation in the near surface *** samples were collected from heights between 50 m and 400 m by summa canisters using an unmanned aerial vehicle(UAV).Concentrations of VOCs(VOCs refers to the 52 species measured in this study)varied minimally below 200 m,and decreased by 21.2%from 100 m to 400 *** concentrations of VOCs above 200 m decreased significantly in comparison to those below 200 *** proportions of alkanes and aromatics increased from 55.2%and 30.5%to 57.3%and 33.0%,***,the proportion of alkenes decreased from 13.2%to 8.4%.Toluene and m/p-xylene were the key species in the formation of SOA and *** component analysis(PCA)revealed that the VOCs measured in this study mainly originated from industrial emissions.

关键词： VOCs vertical profiles secondary organic aerosol PCA Ozone

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Efficient Inactivation of Uv Resistant Bacteria (Urb) by Combined Uv and Chlorine Disinfection

SSRN

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SSRN 2024年

作者： Cao, Ke-Fan Chen, Zhuo Wei, En-Jing Huang, Bang-Hao Gao, Yu-Jia Wu, Yin-Hu Hu, Hong-Ying Environmental Simulation and Pollution Control State Key Joint Laboratory Key Laboratory of Microorganism Application and Risk Control of the Ministry of Ecology and Environment School of Environment Tsinghua University Beijing100084 China Beijing Laboratory for Environmental Frontier Technologies Beijing100084 China Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and Engineering Beijing Forestry University Beijing100083 China Tsinghua Jiangsu Suzhou215163 China

Ultraviolet (UV) is widely used for wastewater and reclaimed water disinfection due to its high efficiency. However, some bacteria exhibit strong resistance to UV disinfection (referred to as UV resistant bacteria, or URB), which can survive after disinfection and pose various risks. In this study, two bacterial strains with strong UV resistance (Deinococcus soli and Sphingomonas panni) were isolated from reclaimed water. Neither single UV disinfection nor single chlorine disinfection can effectively inactivate these URB strains. To effectively control URB, the combined disinfection of UV and chlorine was investigated, and the results showed a significant improvement in inactivation efficiency with synergistic effects. Further analysis using total antioxidant capacity tests, qPCR detection, and SYTO9/PI staining techniques revealed that the main mechanism behind the synergistic effects was the enhanced damage to intracellular content and DNA. Finally, through cost analysis and disinfection tests with actual reclaimed water, the performance of the combined disinfection method was comprehensively evaluated. The results demonstrate combined disinfection has lower costs, higher inactivation rates, and less selectivity. This study can provide a reliable method for controlling the risks caused by URB in water. © 2024, The Authors. All rights reserved.

关键词： Cost benefit analysis

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Influence of NO_(x) on the activity of Pd/θ-Al_(2)O_(3) catalyst for methane oxidation: Alleviation of transient deactivation

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Journal of environmental Sciences 2022年第2期34卷 38-47页

作者： Chang Cui Yan Zhang Wenpo Shan Yunbo Yu Hong He State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Ningbo Research Center for Urban Environment Chinese Academy of SciencesNingbo 315800China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China

Alumina supported Pd catalyst(Pd/Al_(2)O_(3)) is active for complete oxidation of methane, while often suffers transient deactivation during the cold down process. Herein, heating and cooling cycle tests between 200 and 900 ℃ and isothermal experiments at 650 ℃ were conducted to investigate the influence of NO_(x) on transient deactivation of Pd/θ-Al_(2)O_(3) catalyst during the methane oxidation. It was found that the co-fed of NO alleviated transient deactivation in the cooling ramp from 800 to 500 ℃, which was resulted from the in situ formation of NO_(2) during the process of methane oxidation. Over the Pd/θ-Al_(2)O_(3), thermogravimetric analysis and O_(2) temperature programmed oxidation measurements confirmed that transient deactivation was due to the decomposition of Pd O particles and the hysteresis of Pd reoxidation, while the metal Pd entities were less active for methane oxidation than the Pd O ones. CO pulse chemisorption and scanning transmission electron microscopy characterizations rule out the NO_(2) effect on Pd size change. Powder X-ray diffraction and X-ray photoelectron spectroscopy characterizations were used to obtain palladium status of Pd/θ-Al_(2)O_(3) before and after reactions, indicating that in lean conditions at 650 ℃, the presence of NO_(2) increases the content of active Pd O on the catalyst surface, thus benefits methane oxidation. Homogeneous reaction between CH 4, O_(2), and NO_(x) may be partially responsible for the alleviation above 650 ℃. The interesting research of alleviation in transient deactivation by NO_(x), the components co-existing in exhausts, are of great significance for the application.

关键词： Methane Catalytic oxidation Palladium NO_(x)influence

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Kinetic Modeling of Secondary Organic Aerosol in a Weather-Chemistry Model: Parameterizations, Processes, and Predictions for GOAmazon

ACS ES&T Air

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ACS ES&T Air 2025年第2期2卷 249-263页

作者： Yicong He Kelsey R. Bilsback Manish Shrivastava Rahul A. Zaveri John E. Shilling John H. Seinfeld Bin Zhao Shuxiao Wang Christopher D. Cappa Jeffrey R. Pierce Shantanu H. Jathar Department of Mechanical Engineering Colorado State University Fort Collins Colorado 80523 United States；State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China；State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084 China Department of Mechanical Engineering Colorado State University Fort Collins Colorado 80523 United States；PSE Healthy Energy Oakland California 94612 United States Pacific Northwest National Laboratory Richland Washington 99354 United States Divison of Chemistry and Chemical Engineering California Institute of Technology Pasadena California 91125 United States State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China；State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084 China Department of Atmospheric Science Colorado State University Fort Collins Colorado 80521 United States Department of Civil and Environmental Engineering University of California Davis Davis California 95616 United States Department of Mechanical Engineering Colorado State University Fort Collins Colorado 80523 United States

Secondary organic aerosol (SOA) forms and evolves in the atmosphere through many pathways and processes, over diverse spatial and time scales. Hence, there is a need to represent these widely varying kinetic processes in large-scale atmospheric models to allow for accurate predictions of the abundance, properties, and impacts of SOA. In this work, we integrated a kinetic, process-level model (simpleSOM-MOSAIC) into a weather-chemistry model (WRF-Chem) to simulate the oxidation chemistry and microphysics of atmospheric SOA. simpleSOM-MOSAIC simulates multigenerational gas-phase chemistry, autoxidation reactions, aqueous chemistry, heterogeneous oxidation, oligomerization, and phase-state-influenced gas/particle partitioning of SOA. As a case study, the integrated WRF-Chem-simpleSOM-MOSAIC (WC-SSM) model was used to simulate the photochemical evolution downwind of a large city (Manaus, Brazil) in the Amazon and, in turn, study the anthropogenic and biogenic interactions in an otherwise pristine environment. Consistent with previous work, we found that OA was enhanced by up to a factor of 4 in the urban plume due to elevated hydroxyl radical (OH) concentrations, relative to the background, and that this OA was dominated by SOA from biogenic precursors (80%). In addition to accurately simulating the OA enhancement in the urban plume, the model reproduced the magnitude of the OA oxygen-to-carbon (O:C) ratio and broadly tracked the evolution of the aerosol number size distribution. Our work highlights the importance of including an integrated, kinetic representation of SOA processes in an atmospheric model.

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Comprehensive Evaluation of the Distribution, Transport and Ecological Risk of Heavy Metals in Intra-Urban River Sediments Using High-Resolution Techniques

SSRN

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SSRN 2024年

作者： Liao, Kang Li, Weijie Huang, Zhiwei Lin, Shu Fu, Lingfang Liu, Wei Fang, Huaiyang Deng, Hong School of Environment and Energy Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Resource Recycling South China University of Technology Guangzhou510006 China The Key Laboratory of Water and Air Pollution Control of Guangdong Province State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control South China Institute of Environmental Sciences Ministry of Ecology and Environment of the People’s Republic of China Guangzhou510535 China

Determining the distribution trends, transport mechanisms, and ecological risks of heavy metals (HMs) in urban river sediments is essential for the government to conduct appropriate remediation work. In this study, we collected sedimentary columns from the Yayao Waterway in Foshan City, China. The vertical distribution profiles of dissolved and labile Fe, Mn, Cd, Zn, Cu, Cr, Ni, Pb, As, and Co in the sediments were obtained using the thin-film diffusive gradient (DGT) and high-resolution peeper (HR-Peeper) techniques. In addition, the transport rates, contamination levels, and ecological concerns of the HMs were evaluated using the European Community Bureau of Reference (BCR) sequential extraction technique, the DGT-induced sediment fluxes (DIFS) model, and multiple contamination evaluation metrics. The results showed that most of the DGT-labile HMs were associated with Fe/Mn (hydrogen) oxides, and Zn, Ni, and Cr had substantial negative connections with Fe/Mn (p © 2024, The Authors. All rights reserved.

关键词： Biochemistry

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