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通过对荷贝克、理研汽车两个项目点已建污染源在线监测系统运行状况的调研,并结合重金属废水在线监测系统建设标准和项目点实际情况,介绍了重金属废水在线监控及控制系统的现场端和上端平台。该系统在原有基础上增加了四方面的设计:采用污染因子数据、污水处理工况和在线监测设备系统运行状态相结合的三级监控方式,对上传的数据进行有效性判别;对未达标排放的污水进行监控和控制;对设备故障和超标废水进行报警;自动上传日志及报告。实现了对监测因子数据有效性识别和超标控制功能,提高了在线运营监控工作效率,实际运行效果良好。 相似文献
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刘慧 《中国环境管理干部学院学报》2010,20(3):55-57
依据洛阳市3家中型煤制合成氨企业的能耗、水耗及废水氨氮产污调查分析,对中型煤制合成氨企业的吨氨原料煤耗、燃料煤耗、水耗及氨氮产污量进行测算分析。 相似文献
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王留锁 《环境保护与循环经济》2021,(2):67-71
通过对辽西北丘陵地区农村进行现场调研,测算了农村生活污水产污系数。结果表明,监测农户总生活污水中人均日产污水量为16.42 L,COD、BOD5、NH3-N、TN、TP、动植物油浓度的平均水平分别为696.9,341.83,4.34,36.79,4.32,2.28 mg/L;用水来源对农户生活污水中人均日产污水量和动植物油产污系数无显著影响,可取监测农户的平均值作为统一值;锦州北镇市农户生活污水人均日产量为19.12 L,COD、BOD5、TN、动植物油产污系数分别为0.05,0.11,0.09,0.87 g/(人·d),NH3-N和TP产污系数分别在7.29~7.35 g/(人·d)和14.69~14.83 g/(人·d),朝阳北票市农户生活污水人均日产量为19.12 L,COD、BOD5、NH3-N、TN、TP、动植物油产污系数分别为13.59,6.49,0.09,0.43,0.02,0.87 g/(人·d)。 相似文献
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在分析废旧塑料再生利用工艺过程的基础上,确定了废塑料综合利用工艺的产污节点,并通过物流平衡和水平衡计算,得出了总的产排污量,为环境保护措施提供重要依据,以实现保护环境和资源合理再生利用。 相似文献
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基于共词分析的复杂网络研究现状分析 总被引:1,自引:0,他引:1
以CNKI总库上有关复杂网络的相关文献为数据源,在共词分析的基础上通过多维尺度分析方法和战略坐标分析方法探析复杂网络在我国的研究现状及发展趋势,为从事复杂网络研究的学者提出参考.结果表明:①复杂网络的研究可分为两类,一类是复杂网络的理论研究,另一类是复杂网络的管理和安全方面的研究,这两个研究领域联系不紧密.②复杂网络的理论研究涉及复杂网络拓扑统计性质、演化机制与稳定性等,该领域整体联系比较紧密,研究趋向成熟.复杂网络管理、安全类团内部结构松散,研究尚不成熟,但与复杂网络中其他研究结合紧密,有进一步的发展空间.③在复杂网络的理论研究方面,与复杂系统、加权网络、拓扑结构、同步、稳定性、神经网络相关的研究领域可能成为今后研究的热点领域;在复杂网络管理、安全方面,SNMP将有可能成为热点研究项目. 相似文献
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Briassoulis H 《Environmental management》2001,27(1):1-11
Integrated analysis of land-use change in support of informed policy-making for sustainable land use at various spatial levels
makes heavy requirements for quality data. This paper aims to structure the principal methodological and practical issues
of data needs for this task. The data needs for local level analyses of land-use change are given special attention. The paper
adopts an integrated economic–environmental modeling framework and suggests the main types of data needed. Four main data
dimensions are distinguished: system of spatial reference, system of temporal reference, definitions, and data collection
procedures (sources, collection instruments and techniques, recording and retrieval systems, data format, frequency of data
collection). To evaluate the suitability of current data sets as well as to guide the collection of new ones, a scheme based
on substantive and practical criteria is employed. The former include compatibility, consistency, and reliability of data,
while the latter include availability, ease and cost of data collection/retrieval, and transferability of data. The evaluation
indicates the broad gaps in current data sets along the four main data dimensions. Based on this evaluation, the paper suggests
framework guidelines to address the main data issues identified. RID=" ID=" <SUP>1</SUP>CLAUDE: Coordinating Land Use and
Land Cover Data and Analyses in Europe. European Commission Concerted Action project (DG-XII); DAPLARCH: Data Plan Development
for Land Use and Land Cover Change Research. Program sponsored by IGBP-IHDP (LUCC and DIS). Street, Durham, North Carolina
27707, USA 相似文献
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Knowledge of the forces driving and modifying ecosystems can be employed in concert with signal analysis to target the data
most likely to yield sensitivity and resilience information. One can optimize return of information per investment of resources
by targeting segments of signals that are dominated by the force of interest, coupled with scientific understanding of the
system of interest. This force analysis approach is an effective means both to design efficient new monitoring programs and
to target relevant information in large data files. We present five example applications of force analysis. Three examples
illustrate this approach for an evaluation of whether Canadian rivers might be sensitive to changes in climate. It was concluded
that Canadian rivers appear to be sensitive to changing climate. A fourth example illustrates how automated snow pillow data
may be evaluated to ascertain the sensitivity of snow accumulation to change in climate. It was concluded that snow accumulation
at the site evaluated did appear to be sensitive to changing climate. The fifth example illustrates the assessment of whether
a river recovers with the elimination of inputs of iron from an abandoned mine. It was concluded that resilience remained
unproven since the river had not as yet restabilized. The force analysis approach focuses data collection or data evaluation
on those data required to answer specific resource management questions, greatly reducing collection or consideration of data
that are not relevant to that question. This approach is potentially very cost-efficient and therefore is likely to be of
interest to hydrologists, climatologists, and environmental data managers. 相似文献
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设备在遭遇不同程度的静电放电时,其自身的安全性和可靠性面临着巨大的考验。GB/T 17626.2-2006、GJB 1389A-2005和RTCA/DO-160F均描述了静电放电试验项目。比较分析这三个标准对该项目在试验目的、适用对象等方面的差异,可以发现这三个标准的考核要求和试验方法也不尽相同。GB/T 17626.2-2006是一项基础性标准,适用于各种电子设备;GJB 1389A-2005主要针对垂直起吊、空中加油系统以及军械分系统,考核其在装卸、运输和垂直补给过程中的安全性和可靠性;RTCA/DO-160F主要考核的是民航空运设备在经受静电脉冲后执行预期功能的能力。 相似文献
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介绍LED产品常见的失效分析手段,主要包含外观检查、电性能测试、X-Ray透视检查、开封检查、金相切片分析、扫描电镜和能谱分析等手段,并结合实际案例对几种方法进行描述。 相似文献