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91.
污染源大数据是环保大数据的重要组成部分,然而在以环境管理制度为基础的污染源数据管理过程中,一直存在制度衔接不流畅、数据不共享等诸多问题。本文调研考察了现有各项环境管理制度的衔接情况,提出以排污许可制度为核心,通过与其他环境管理制度有效衔接,实现环境管理的各个环节的有效覆盖。通过SWOT分析法对基于"一证式"改革的环境管理制度优化方案的可行性和必要性进行了深入分析,并以排污许可证为核心,设计企业环境管理信息系统框架。试生产与竣工环保验收实效不足,可转为企业自行备案;将环评审批结论纳入排污许可证,可大幅度减轻企业相关环境管理业务人员的负担。环境管理制度的优化必须建立在部门职能转变与整合之上;同时,还必须获得国家层面的立法与行政的支持;社会舆论的关注与支持也将推动环境管理制度优化的进程。以排污许可证管理为核心的信息系统框架可以有效实现污染源排放信息整合共享。  相似文献   
92.
采用离子交换膜电解技术处理铜冶炼过程产生的含氯及重金属的废酸。考察了废酸处理工艺、电解温度、电解时间、电流密度和催化剂的添加等条件对处理效果的影响。实验结果表明:采用先沉淀重金属后脱氯的废酸处理工艺,氯离子和铜离子的去除效果均较好;当以钛盐为催化剂时,在电解温度为40 ℃、电解时间为2.0 h、电流密度为825 A/m2的最佳工艺条件下,处理后废酸中的氯离子质量浓度为0.22 g/L,氯离子去除率为98.59%,铜离子质量浓度为0.45 g/L,铜离子去除率为95.08%,其他重金属大部分也得到有效去除。净化后的废酸可回用至铜冶炼的生产过程中。  相似文献   
93.
Despite long-standing knowledge of the benefits of riparian buffers for mitigating nonpoint source pollution, many streams are unprotected by buffers. Even landowners who understand ecological values of buffers mow riparian vegetation to the streambank. Do trends in rural riparian conditions reflect the development of riparian forest science? What motivates residential riparian management actions? Using high-resolution orthoimagery, we quantified riparian conditions and trends between 1998 and 2015 in the rural upper Little Tennessee River basin in Macon County, North Carolina and explored how landowners view riparian zone management and riparian restoration programs. Buffer composition in 2015 was as follows: no buffer (32.5%), narrow (19.3%), forested (26.7%), shrub (7.2%), and intermediate (7.0%). Relative to 1998, the greatest decrease occurred in the no buffer class (−17.7%, 46 km) and the largest increases occurred in the shrub (+72.5%, 20 km) and narrow (12.6%, 14 km) classes. Forested buffer marginally increased. Semi-structured interview data suggest that landowners prioritize recreational and scenic aspects of riparian buffers over ecological functions such as filtration and bank stabilization. Riparian restoration programs might be made more enticing to non-adopters if outreach language appealed to landowner priorities, design elements demonstrated intentional management, and program managers highlighted areas where ecological goals and landowner values align.  相似文献   
94.
机场作为民航运输的关键节点和重要枢纽,肩负着服务区域经济的重要使命,同时也面临环境保护与可持续发展的巨大挑战。作为公共基础设施和城市形象窗口,机场上市公司具有披露环境信息的义务与责任。在充分研究国内机场上市公司环境信息披露制度背景的基础上,本研究借鉴全球报告倡议组织(GRI)发布的《可持续发展报告指南》(第四版)及机场运营者行业补充(GRI-AOSS)构建了适用于我国机场的环境信息披露评价指标体系,并利用公开数据对国内6家机场上市公司的环境信息披露情况进行了实际测评。结果表明:我国机场环境信息披露程度较低,存在内容简单、量化不足、质量下降等问题。机场上市公司环境信息披露亟待在法律法规层面进行系统规范。建议借鉴GRI等相关国际标准及成功经验,制定适用于我国的科学可行的环境信息披露标准和制度体系。  相似文献   
95.
This experimental research addresses the effectiveness of communication about complex environmental issues, depending on whether the same information is provided by multiple collaborating or by individual organizations (i.e., stakeholders). The information provided pertains to carbon dioxide capture and storage (CCS) technology, as an example of a complex environmental issue. In Studies 1 (N = 75) and 2 (N = 66) we found that participants perceived factual information from collaborating stakeholders to be of higher quality than when the same information was provided by individual stakeholders. As predicted, the expectation of diverse perspectives being represented in the collaborative information mediated this effect. In addition, in Study 3 (N = 79) the perceived dissimilarity of collaborating stakeholders was shown to be an important precondition for the collaboration effect observed in Studies 1 and 2. Finally, these studies indicate that occasional collaboration between different stakeholders does not necessarily harm the perceived credibility of each individual stakeholder.  相似文献   
96.
Ramus K  Kopinke FD  Georgi A 《Chemosphere》2012,86(2):138-143
The effect of dissolved humic substances (DHS) on the rate of water-gas exchange of two volatile organic compounds was studied under various conditions of agitation intensity, solution pH and ionic strength. Mass-transfer coefficients were determined from the rate of depletion of model compounds from an apparatus containing a stirred aqueous solution with continuous purging of the headspace above the solution (dynamic system). Under these conditions, the overall transfer rate is controlled by the mass-transfer resistance on the water side of the water-gas interface. The experimental results show that the presence of DHS hinders the transport of the organic molecules from the water into the gas phase under all investigated conditions. Mass-transfer coefficients were significantly reduced even by low, environmentally relevant concentrations of DHS. The retardation effect increased with increasing DHS concentration. The magnitude of the retardation effect on water-gas exchange was compared for Suwannee River fulvic and humic acids, a commercially available leonardite humic acid and two synthetic surfactants. The observed results are in accordance with the concept of hydrodynamic effects. Surface pressure forces due to surface film formation change the hydrodynamic characteristics of water motion at the water-air interface and thus impede surface renewal.  相似文献   
97.
Payne, Scott M. and William W. Woessner, 2010. An Aquifer Classification System and Geographical Information System-Based Analysis Tool for Watershed Managers in the Western U.S. Journal of the American Water Resources Association (JAWRA) 46(5):1003-1023. DOI: 10.1111/j.1752-1688.2010.00472.x Abstract: Aquifers and groundwater systems can be classified using a variety of independent methods to characterize geologic and hydraulic properties, the degree of connection with surface water, and geochemical conditions. In light of a growing global demand for water, an approach for classifying groundwater systems at the watershed scale is needed. A comprehensive classification system is proposed that combines recognized methods and new approaches. The purpose of classification is to provide groundwater professionals, policy makers, and watershed managers with a widely applicable and repeatable system that reduces sometimes cumbersome complex databases and analyzes to straightforward terminology and graphical representations. The proposed classification system uses basin geology, aquifer productivity, water quality, and the degree of groundwater/surface water connection as classification criteria. The approach is based on literature values, reference databases, and fundamental hydrologic and hydrogeologic principles. The proposed classification system treats dataset completeness as a variable and includes a tiered assessment protocol that depends on the quality and quantity of data. In addition, it assembles and catalogs groundwater information using a consistent set of nomenclature. It is designed to analyze and display results using Geographical Information System mapping tools.  相似文献   
98.
1IntroductionAs a many-volcano-distributed country,China is covered with many volcanoes and lava rocks.A-mong the one-thousand-or-so volcanoes,Changbai Mountain Volcano,Wudalianchi Volcano,Tengchong Volcano and Ashikule Volcano of West Kunlun are the mostlatentcatastrophic erup-tive active volcanoes.In recent years,the activity of the earth' s crust in some volcanic areas isobviously becoming increasing violent.Butfew scholars have monitored and evaluated volcano inChina.So building VDI…  相似文献   
99.
广州市环境监测管理信息化建设中若干问题探讨   总被引:1,自引:0,他引:1  
以广州市环境监测中心站推进信息化的实践为例,重点对环境监测管理信息化规划、开发和应用3个环节所涉及的信息化进程路线、应用系统开发的需求分析和推广应用等问题进行了一些探讨,提出切合自身的解决思路或办法。  相似文献   
100.
基于B/S+C/S的矿山安全标准化管理信息系统研究   总被引:2,自引:1,他引:1  
首先介绍了安全标准化实施的关键步骤、技术特点及其在矿山的应用,通过现场调研、安全培训,危害辨识与风险评价、文件汇编等环节在山西某矿山建立了安全标准化管理信息系统,在此基础上开发了与之相配套的、基于B/S和C/S混合模式的、在局域网上运行的应用软件--矿山安全标准化管理信息系统.系统由统一信息发布平台、即时报警系统、安全记录管理系统、统计分析系统等14个子系统组成.系统的应用提升了矿山安全生产整体水平,实现了矿山安全标准化和信息化.  相似文献   
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