共查询到20条相似文献,搜索用时 62 毫秒
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煤化工生产不可避免地产生大量有毒和有害污染物。VOCs废气的收集和处理已成为废气处理中的一个重点事项。有效处理VOCs排放有助于良好的环境治理和保护人类健康。在分析现有VOCs治理技术的基础上,探讨了煤化工VOCs治理的新方法和新思路。 相似文献
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在石化企业生产过程中,由于VOCs气体的泄露和挥发,极易引发火灾或爆炸,对环境造成危害。通过对VOCs的排放状况进行全面剖析,探讨目前各类VOCs治理技术的使用状况,并对其各自的特点进行探讨,提出优化有机废气处理效果的措施。 相似文献
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文章通过某企业活性炭吸附+催化燃烧组合工艺处理工业废气的应用,阐述了活性炭吸附+催化燃烧组合工艺在治理VOCs废气过程中的可靠性和有效性,既提高了处理效率,又实现了污染物超低浓度排放的治理目标。 相似文献
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为探究发酵类制药企业污水处理厂废气中挥发性有机物的成分及恶臭来源,选取石家庄市某发酵类制药企业污水处理厂为研究对象,参照美国EPA的TO-15方法,采用SUMMA罐采样-三级冷阱预浓缩-GC/MS分析方法,对各个处理单元和排放废气中的VOCs成分进行了定性分析,并对特征组分进行了定量分析。结果表明,VOCs的主要产生单元是水解酸化池、完全混合曝气池和沉淀池;在水解酸化池中,异丙硫醇的质量浓度最高,达到12.02 mg/m~3;厂区环境中异丙硫醇、丁硫醇、硫化氢的阈稀释倍数较大,是主要的恶臭污染贡献物。分析发酵类制药企业污水处理厂废气中VOCs及厂界恶臭物质的污染特征,改进废气中异丙硫醇和丁硫醇的治理工艺,加强对恶臭物质的治理,可进一步改善厂区及周边环境的污染程度,为石家庄市大气污染治理提供技术支持。 相似文献
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Joo Vareda 《Telecommunications Policy》2010,34(11):697-710
This papers studies if access price regulation has an impact on incumbents’ incentives to invest in their network that might differ according to the nature of investments, that is, quality-upgrading and cost-reducing. It is shown that if the marginal cost of quality-upgrading is very low both types of investment are increasing in the access price. If the marginal cost of cost-reducing is very low, both investments decrease after an increase in the access price. Otherwise, a high access price increases the incentives for quality-upgrading and reduces the incentives for cost-reducing. Therefore, regulators should set a higher access price the lower is the marginal cost of quality-upgrading as compared to the marginal cost of cost-reducing. 相似文献
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对电力企业下岗分流及再就业的一些问题作了阐述和分析,提出了一些值得重视的具体困难问题,应配合中央有关文件精神使这一工作走向规范化、科学化。 相似文献
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This research focuses on supplier-buyer relationships in a distribution channel. It uses a contingency theory to claim that, under different environmental conditions, logistics flexibility and relationship flexibility for a focal firm (a manufacturer in this study) will have distinct effects on logistics service quality (when treated as a controllable mediator) and the firm's satisfaction in its relationship with its key downstream account. Using data from a survey of manufacturers in China, it uses structural equation modeling to test the main effects and moderated regression together with moderated path analysis to examine the contingent effects of environmental uncertainty. The results show that, as distinctive capabilities, both logistics flexibility and relationship flexibility have significant positive effects on the level of logistics service quality that the manufacturer offers, which, in turn, enhance how much it values and is satisfied with its relationship with its key account. However, the direct effect of logistics flexibility on relationship satisfaction is stronger under an uncertain environment, while the direct and total effect of relationship flexibility on relationship satisfaction is stronger under a stable environment. 相似文献
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本文主要介绍了当前施工企业机械设备管理过程中存在的几个问题及其相应的解决方法,为施工企业提高机械设备管理水平提供借鉴作用。 相似文献
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This paper reports the results of the quantitative analysis of international experience of the relationship between infrastructure investment in the deployment of capacity that can carry large volumes of voice and data traffic and regulatory policy changes in the telecommunications sectors. It looks at the relationship between infrastructure investment for these infrastructure assets and the access pricing régimes for local exchange carriers in the United States and Europe. It then looks at the relationship between various aspects of regulatory and institutional policy changes in Europe and how they affect access prices.The paper finds that a lower access price promotes greater deployment of digital technology among US incumbent local exchange carriers (ILECs). Based on this finding, it suggests that it is in the ILECs interest to have access to their networks encouraged.The European data for interconnection are recent and far reaching conclusions are not feasible, but the findings, however, suggest that competition has worked by facilitating new entry through decreasing interconnection prices, although path dependencies, of existing and traditional concepts, in the mindsets of operators as well as regulators, may account for these findings. 相似文献
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西南地区钢铁企业规模小、分布散,落后产能占相当比重,装备水平较低,总体竞争力不强,必须抓住当前的有利时机,在国家、地方政府的大力推动下,充分发挥武钢等优势企业的主导作用,加快推进西南地区钢铁企业的重组整合工作。 相似文献