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951.
本文提出了一套适合于我国中小城市大气污染总量控制研究的技术路线和模型。通过环境容量规划和污染综合治理规划的有机结合,从而达到以优化的方式协调经济发展与环境保护的矛盾。对镇江市的应用结果表明,本文提出的技术路线和模型是合理可行的。所给出的总量控制方案既能符合经济发展的需要,又能经济有效地控制并改善区域的大气环境质量。 相似文献
952.
通过对山东电网所属发电厂锅炉NOx排放状况进行调查、测试,得出锅炉NOx排放量与煤种、炉型、燃烧器型式、运行中空气过剩系数、负荷等的关系.结果表明,山东省火力发电厂50 MW及以上容量机组2003年的NOx排放总量超过40万t(按NO2计算).控制和治理NOx排放已成为刻不容缓的重要工作. 相似文献
953.
O3/H2O2高级氧化技术H2O2加入量的简易控制方法 总被引:1,自引:0,他引:1
对与臭氧有着不同反应活性的3类有机污染物,探讨并建立了O3/H2O2高级氧化技术H2O2较优投加量的简易控制方法。结果表明,水中存在溶解臭氧是H2O2与臭氧降解效率具有协同作用的必要条件,另外,H2O2的较优加入量直接依赖于目标有机污染物与臭氧的反应活性。对于不同的有机物及在常规的臭氧化水处理时间内,H2O2加入量控制在单独臭氧化处理时水中溶解臭氧的20-30倍(质量比)之间为宜。这种简易控制H2O2加入量的方法对推广O3/H2O2技术在实际废水处理中的应用具有重要的意义。 相似文献
954.
可交易排污许可证在传统的排污许可证基础上,引入市场机制。不但对企业选择污染控制手段赋予更大的灵活性,而且可以大大节约水污染控制费用、剌激企业开发并建设更加经济有效的污染控制技术。国外十多年的研究和实践证明可交易排污许可证是一种经济而有效的环境管理手段。水污染排放许可证制度在我国的应用已有一定基础。在条件具备的地区可以引进可交易水污染物排放许可证制度,本文回顾了“可交易水污染许可证制度”的理论分析和国外实践,进而探讨在中国的应用前景 相似文献
955.
ABSTRACTThe environmental justice (EJ) literature can benefit from comparative analysis that helps to identify conditions for more and less successful outcomes. A data set of 50 EJ cases in the U.S. was developed with high and low remediation as the outcome. Causal conditions were selected on theoretical grounds, and included five mobilizing strategies (local and state government coalitions, federal government attention, civil disobedience, litigation, and national NGO support) and three general conditions (absence of industry counter-mobilization, presence of water pollution, and proposed or new siting). Qualitative comparative analysis and other analyses indicated that all causal conditions were found in the high-remediation cases but that some conditions (water pollution and local–state coalitions) were more consistently associated with the high-remediation outcome. The analysis points to the value of systematic studies of the factors that affect local EJ outcomes and to the need for better case study collections. 相似文献
956.
957.
废气治理的低温等离子体-催化协同净化技术 总被引:2,自引:0,他引:2
低温等离子体 催化协同净化技术具有能耗低、投资少、处理效率高、不产生二次污染等显著优点备受人们的关注。从挥发性有机化合物 (VOC)的转化、氮氧化合物的脱除、汽车尾气净化等不同废气治理的角度 ,概括了目前国内外在这方面的研究进展 ,最后提出了该项技术在环境保护领域的应用前景及研究方向 相似文献
958.
Ibarra-Berastegi G Madariaga I 《Environmental science and pollution research international》2003,10(6):361-367
GOAL. SCOPE. BACKGROUND: In urban environments, the measured levels of ozone are the result of the interaction between emissions of precursors (mainly VOCs and NOx) and meteorological effects. In this work, time series of daily values of ozone, measured at three locations in Bilbao (Spain), have been built. Then, after removing meteorological effects from them, ozone and traffic data have been analyzed jointly. The goal was to identify traffic situations and link them to ozone levels in the area of Bilbao. METHODS: To remove meteorological effects from the selected ozone time series, the technique developed by Rao and Zurbenko was used. This is a widely used technique and, after its application, the fraction obtained from a given ozone time series represents an ozone forming capability attributable to emissions of precursors. This fraction is devoid of any meteorological influence and includes only the apportion of periodicities above 1.7 years. In the case of Bilbao, the ozone fractions obtained at three locations have been compared on that time scale with traffic data from the area. RESULTS AND DISCUSSION: For the 1993-1996 period, a regression analysis of the ozone and traffic fractions due to periodicities above 1.7 years (long-term fractions), shows that traffic is the main explanatory factor for ozone with R2 ranging from 0.916 to 0.996 at the three locations studied. Analysis of these longterm fractions has made it possible to identify two traffic regimes for the whole area, associated to different profiles of ozone forming capability. The first one favors low ozone forming capability, and is associated with a situation of fluent traffic. The second one shows high ozone forming capability and represents congestion. Joint analysis of raw data of ozone and traffic do not show any clear pattern due to the strong masking effects that seasonal-meteorological effects (mainly radiation) have on the measured ozone signal. If only immission data of ozone are available, as in this case, a comparison between ozone and traffic can only be made on the long-term time scale, since that is the only fraction embedded in the ozone time series that can exclusively be attributed to emissions of precursors. This fact stresses the need to study the different fractions embedded in the time series of ozone measured levels separately. CONCLUSION: Though the coefficients obtained in the regression are only valid for the 1993-1996 period, these traffic regimes represent long-term targets (congestion or fluent traffic) that can inspire policies for a joint management of the traffic and pollution by ozone in the area of Bilbao beyond that period. RECOMMENDATIONS AND OUTLOOK: The results of this work show the need of a joint management of ozone and traffic in Bilbao. Since an accurate knowledge of traffic was not available, the use of emission factors to relate traffic and actual ozone levels has not been possible. For this reason, this study has focused on the long-term fractions of traffic and ozone. In the future, if a more accurate knowledge of traffic is available, it will be possible to find relationships between traffic and ozone on all time scales. 相似文献
959.
污染物总量控制是目前我国广泛应用的一种控制区域环境质量达标的方法 ,在总量控制中 ,环境容量分配的科学化、合理化和各点浓度的合理值计算是至关重要的。本文就此做些研究 ,以确保实现从局部到区域的环境质量达标。 相似文献
960.
介绍了侧联式球磨机噪声产生原理及其噪声控制方法,选择了制作局部式隔声罩的噪声控制设计和装置结构.在中国铝业中州分公司热电厂球磨机上应用,取得了很好的隔声效果. 相似文献