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9月18日,广东省政府在东莞市沙角A电厂举行签订全省“十一五”主要污染物排放总量控制目标责任书暨环保执法用车派发仪式,这标志着广东“十一五”化学需氧量和二氧化硫排放量削减工作已全面启动。广东省委副书记、省长黄华华出席了仪式。广东省副省长谢强华作重要讲话。
在当日举行的仪式上,广东省环保局局长李清代表省政府与各地级以上市政府签订二氧化硫和化学需氧量等主要污染物总量控制目标责任书。黄华华、谢强华、国家环保总局污控司司长樊元生向省环保局及汕头等14个市派发了环保执法用车,为广州等7个市下达环保执法用车定编证,并共同启动沙角A电厂3、4号机组脱硫装置投入运行。 相似文献
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根据有关规定,环境保护部组织对2008年上半年各省、自治区、直辖市主要污染物总量减排情况进行了核查核算。结果表明,上半年全国化学需氧量排放总量674.2万吨,与2007年同期(691.3万吨)相比下降2.48%;二氧化硫排放总量1213.3万吨,与2007年同期(1263.4万吨)相比下降3.96%。从主要减排工程措施看,1至6月份,全国有4060万千瓦燃煤脱硫机组建成投产, 相似文献
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根据2006年9月18日,广东省环境保护局与珠海市签订的"主要污染物排放总量目标责任书",2010年底,珠海市二氧化硫排放总量控制在2.8万吨以内,化学需氧量排放总量控制在3.O万吨以内. 相似文献
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《Atmospheric Environment. Part B. Urban Atmosphere》1991,25(2):267-283
A mational air quality monitoring network has been established in the U.K. by Warren Spring Laboratory, on behalf of the U.K. Department of the Environment, to determine compliance with the European Community Directive for nitrogen dioxide. Data from the six network sites for 1987 are presented and analysed.No site in the U.K. breached the NO2 Directive Limit Value during this year, though the closest approaches were at the two London stations. Annual average NO2 concentrations, which varied from 23 to 39 ppb, were consistent with the top five percentile of long-term measurements from a national survey of over 360 U.K. urban areas carried out in 1986.The temporal variability of NO2 concentrations was substantially lower over all time scales than that for NO: winter/summer ratios for all sites averaged 2.9 for NO and 1.3 for NO2. Most sites showed strong diurnal variations for NO which were primarily influenced by traffic emissions during rush hours, although these variations were less marked for NO2.A markedly non-proportional relationship between annual and daily average NO2 and NOx levels was observed, and this has important implications for its efficacy of possible NOx emission control strategies. An analysis of measured NO2/NOx ratios over weekends and weekday periods demonstrates, for instance, that a 20% emission cutback may result, typically, in a corresponding NO2 reduction of 12% at urban locations in the U.K. NOx reductions, however, exert a more proportional effect on NO2 concentrations at kerbside and rural locations. 相似文献
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采用固定床流动反应装置,考察Cu2O、CuO、Cr2O3、Fe2O3、MnO2、Ni2O3、V2O5等金属氧化物对NOCOCO2N2体系中NO去除反应的催化作用,同时,分析了NOCOCO2N2体系中金属氧化物对NO去除的作用。研究结果表明,各金属氧化物对NO去除反应均有不同程度的催化活性,其中Fe2O3、Ni2O3、CuO等对NO的去除显示出较强的催化作用。金属氧化物存在条件下NOCOCO2N2体系中,NO去除反应较为复杂,NO/CO气相直接反应、低价氧化物对NO的还原作用、金属氧化物对NO分解反应的催化作用及金属氧化物对NO/CO反应的催化作用等都可能存在。大部分金属氧化物以对NO/CO反应的催化作用为主,而Ni2O3的预还原试样对NO的直接分解反应表现了极强的催化活性。 相似文献
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针对提钒炼钢厂建设于20世纪70年代初的1号—3号转炉实施煤气回收的可能性进行了论证,对影响煤气回收的问题提出了相应的完善措施,在此基础上成功实施了1号—3号转炉煤气回收改造,改进后年回收转炉煤气达2 127 138GJ以上,可发电59 124 kW.h,减少CO2排放量近20万t,对降低生产能耗及减少温室气体排放起到了较好作用。 相似文献
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闽北570铀矿区周围大气环境氡浓度水平研究 总被引:2,自引:0,他引:2
对闽北570铀矿区的大气氡环境地球化学进行了研究。矿区废渣和坑道口释放出来的氡气对周围大气形成了一定的氡污染,特别是在矿区周围0.5~1km范围内的污染较严重。但是空气中的氡污染随着离矿区的距离增大而迅速减弱,矿区周围居民室内氡的浓度较高,是福建省室内氡浓度平均值的1~8倍左右。在进行调查的28个居室中,有6个(占21%)居室内氡浓度超过我国住房内氡浓度控制标准GB/T16146-1995中已建住房的室内氡浓度上限值(200Bq/m3)和国际辐射防护委员会制定的200Bq/m3的上限值。居室中氡浓度的升高,除了受矿区释放出来的氡污染外,还因为本地区属高本底辐射区,房基下的土壤、岩石和建筑材料中的铀、镭等放射性元素的含量高,其放射性衰变产生的氡释放出来进入室内。 相似文献
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W. Kirmse 《Die Naturwissenschaften》1959,46(11):379-379
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详细介绍了唐钢3#高炉干法煤气净化系统。该系统与湿式高炉煤气净化系统相比,提高了煤气质量,节能效果显著,具有广泛的推广使用价值。 相似文献
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《Atmospheric Environment. Part B. Urban Atmosphere》1991,25(2):255-265
A nationwide survey of ambient NO2 concentrations has been carried out by Warren Spring Laboratory and AEA Technology, Harwell, in urban areas of the U.K. The survey utilised passive diffusion tube samplers, deployed at 363 existing smoke/SO2 monitoring stations, and ran from July to December 1986.Although undertaken primarily to provide an independent check on the siting of monitoring stations to determine compliance with the European Community NO2 Directive, the survey provides for the first time a nationwide picture of urban levels of this pollutant. London was found to experience the highest average NO2 concentrations in the U.K., with these being highest close to busy roads. Concentrations were found to be only moderately higher in winter than in summer.Correlations between measurements of SO2, smoke and NO2 were examined. The closest correlation is observed between NO2 and smoke, indicating traffic to be a dominant source of these pollutants. NO2 data are also shown to correlate well with disaggregated NOx emission data for the U.K. 相似文献
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北京大气中NO、NO2和O3浓度变化的相关性分析 总被引:13,自引:1,他引:13
臭氧(O3)是城市污染大气中的首要光化学污染物,其变化规律与氮氧化物(NOx=NO NO2)关系密切.采用49C臭氧分析仪和42CTL氮氧化物分析仪对北京城区O3和NOx浓度进行了连续观测,时间为2004-08~2005-07.结果显示,O3和OX(O3 NO2)浓度在午后15:00左右出现峰值,NOx呈双峰态日变化,在07:00和23:00左右出现峰值.不同季节污染物的浓度变化存在差异,O3和NOx浓度分别在夏季和冬季达到最大.NOx浓度存在100×10-9(体积分数)的"分界点",NOx低浓度时以NO2为主,NOx高浓度时NO占大部分.OX区域贡献和局地贡献存在明显的季节变化,前者主要受区域背景O3的影响,在春季最大,后者主要受局地NOx光化学反应的制约,在夏季最强,同时OX组分呈现显著的昼夜差异. 相似文献