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排序方式: 共有89条查询结果,搜索用时 62 毫秒
1.
水雾荷电净化空气飘尘与细菌的研究 总被引:1,自引:0,他引:1
研究一种高压静电水雾场产生的荷电净化空气中飘尘与细菌的方法。实验结果表明:在静电电压15kV、通风量540m~3/h的工况下,实验装置的一次性除尘效率高于80%、除菌效率达到88%以上;实验装置可以连续运行,能耗低、出风无二次污染。 相似文献
2.
通过一年的总量排污收费实际征收,本文用实践经验,从确定征收标准的原则、 测算样本、数据的统计分析三方面,结合郑州市的实际情况,对水污染物和大气污染物征收标准的确定进行了探讨, 特别是在数据的统计分析方面,通过不同的统计方法计算出不同的统计结果,说明了制定统计方法的重要性,提出了科学合理的统计分析方法。同时简述了确定试点征收标准时应注意的一些问题。 相似文献
3.
分析了煤种含硫量、灰份及粉尘化学组成对除尘效率的影响,研究了电除尘器效率考核存在的问题,提出了校核除尘效率的方法,并结合生产实际进行了核算。 相似文献
4.
长芒刺电除尘器性能研究 总被引:5,自引:2,他引:5
提出一种新型长芒刺电除尘器,理论与实验研究结果表明,长芒刺电除尘器的场强、伏安特性和除尘效率等性能均高于普通线板式电除尘器。 相似文献
5.
本文根据高压静电除尘的原理,磷肥厂烘干磨粉尘的特性分析,以及作者本人的工作实践,探讨了高压静电除尘技术在磷肥厂烘干磨粉尘治理中应用的可行性。 相似文献
6.
沥青烟是一种较强的致癌物质,对人的健康会造成极大的伤害。电捕焦油器对消除沥青烟起到了至关重要的作用,是捕集沥青烟气较为理想的净化设备。 相似文献
7.
This paper introduces a novel tribocharging apparatus that utilizes a Faraday cup and experimentally investigates the charging behavior of glass beads. The novel apparatus mainly consists of four parts: an air supply part to control air duration and pressure, a powder supply part for setting the desired amount of powder (1 g in this experiment), a metal pipeline for generating a tribocharge, and a cyclone for collecting the powder that has passed through the pipeline. Four different sizes of spherical glass beads were used in this experiment. As for the results, the charge clearly increased as the glass bead particles passed through the pipeline for all four types of glass beads. The charge amount of the glass beads and the charge amount obtained from the pipeline had a very similar trend and absolute values. This confirmed the reliability of the test and showed that there was no disturbance due to external noise. In all of the tests, the net charge was observed to be negative for all glass beads. This agrees with the triboelectric series relating to the work functions of metals and glass particles. Smaller particles had larger charge amounts than did larger ones with good reproducibility. The charge amount of all glass beads increased as the supplied spiral air pressure increased. 相似文献
8.
Eoin O’Neill Catherine Devitt Mick Lennon Phoebe Duvall Laura Astori Ruaidhri Ford 《Environmental Communication: A Journal of Nature and Culture》2018,12(4):451-461
Policy reform can be complex and fraught with contending arguments. Although much research has been conducted into the politics of coalition formation, less attention has been devoted to legitimating logics in policy reform. Drawing on the work of Boltanski and Thévenot, this exploratory study addresses this deficit by examining the influence of justifications deployed in policy debates. The paper analyses the role of shifting reasoning in contentious debates concerning attempts to reform water policy, including the introduction of domestic water charges in Ireland. Employing data from parliamentary deliberations, the paper traces the changing forms of justification used by those favouring and opposing the reforms. This examination suggests the importance of aligning an argument’s content with the shifting context into which it is introduced. The paper highlights the benefits of an investigative approach concerning policy justification for understanding policy reform dynamics at the intersection of politics and environmental communication. 相似文献
9.
C. Russell 《Regional Environmental Change》2001,2(2):73-76
How to choose among the dozen policy instruments available to environmental management agencies has been a matter of concern
and debate among environmental economists for the entire life of the profession – nearly four decades. The ability, or lack
of it, to measure the quantities or observe the actions made "enforceable" by particular policy instruments ought clearly
to be central to this choice. However, all too often the monitoring problem has been assumed away. When it is reintroduced
in realistic forms, we find, not surprisingly, that some favorite policy instruments, such as pollution charges, are not applicable
to some important problems, such as runoff pollution from farms; that marginal subsidies, by changing the burden of proof,
may no longer be symmetric with charges; and that the apparent freedom from monitoring requirements of the newly fashionable
instrument involving the public provision of information about firms or products is "paid for" by our inability to say anything
about its performance on other dimensions that are also of interest.
Electronic Publication 相似文献
10.
M. Bundgaard-Nielsen C. L. Hwang 《Journal of the American Water Resources Association》1975,11(4):805-810
ABSTRACT: The interaction between the level of taxation and the firms accruing choice of treatment technology is discussed. It is shown that there is a risk of overtaxation, that is, simply increasing taxation may fail to improve environmental quality but only increase production costs and thus consumer prices. 相似文献