共查询到20条相似文献,搜索用时 109 毫秒
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通过对个旧市 2 0 0 0年和 2 0 10年大气SO2 排放量的预测及对环境空气质量的影响预测 ,提出SO2 污染防治措施以及SO2 削减计划 ,从而确定出既能满足个旧市环境空气质量功能分区目标 ,又与国家对酸雨控制区的规划目标一致的个旧市 2 0 0 0年至 2 0 10年大气SO2 总量控制目标 ,以确保酸雨和SO2 污染不断恶化的趋势得到遏制 相似文献
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1996~2005年太原市SO2污染特征及变化趋势分析 总被引:2,自引:0,他引:2
近年来,太原市环境空气质量污染问题较为突出,其中大气污染因子SO2特别值得关注。以1996~2005年太原市大气中SO2的监测数据为依据,分析了十年间SO2浓度的时间变化特征及原因,并采用Spearman秩相关系数法对SO2浓度变化进行了趋势分析。结果表明:①太原市SO2污染为煤烟型污染;②SO2浓度的月和季节变化的规律性明显;③十年间SO2年均浓度下降趋势显著,采暖月份和季节SO2浓度在全年中的比重基本呈下降趋势;但十年间SO2年均浓度全部超过国家环境质量二级标准:④1998年以后SO2浓度下降趋势不稳定,波动大。 相似文献
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区域理论大气环境容量研究 总被引:1,自引:0,他引:1
根据质量守恒原理,综合考虑迁移、扩散、干湿沉降、化学转化等因素,建立了区域理论大气环境容量模型——容量箱模型,对各参数的量化提出了计算式。在考虑自然保护区、风景名胜区等环境敏感区和地形陡峭的山坡不能布置工业企业的情况下,提出了可利用大气环境容量概念。并以乐山市北部地区为例,计算了该区域的SO2理论大气环境容量,为乐山市相关管理部门进行生产力布局提供了宏观导向。 相似文献
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基于模糊数学的大气环境质量综合评价 总被引:1,自引:0,他引:1
鉴于大气环境质量评价中客观存在的不确定性和模糊性,运用模糊数学方法,选用SO2、NO2、PM10作为评价因子,参照大气环境质量标准,通过计算污染因子权重分配系数和隶属度对乌鲁木齐市2004年至2010年大气环境质量给出客观的评价,综合评价结果表明乌鲁木齐市总体大气环境质量为轻度污染(三级),但空气质量在逐年好转,SO2和PM10依然是乌鲁木齐市空气质量的制约因子,且NO2的权重在逐年上升。模糊综合评判考虑环境空气质量评价的模糊性,根据污染物浓度对各级别的贴近度考察污染物的级别,评价结果比较直观,可以细致准确的评价环境质量等级,评价结果基本可以反映环境空气污染的情况。 相似文献
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川西古镇大气环境容量计算模型 总被引:1,自引:1,他引:1
通过对川西古镇大气环境污染特点的分析。根据箱体内污染物“物质守恒”原理,以箱式模型为基础,推导出箱体内污染物之浓度随时问和空间的变化规律。建立了适合于川西古镇大气环境容量的数值计算模型。在此基础上,根据污染物自身特点,引入k1、k2两个浓度修正系数,分别建立了适合于该区域的SO2和TSP环境容量计算的修正模型。当研究区域具有下垫面变化显著或大气污染源源强变化显著等特点时,应使用改进后的单箱模式。 相似文献
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区域环评中北方河流水环境容量计算方法研究 总被引:1,自引:0,他引:1
考虑北方河流枯水期流量较小,污水处理厂排水形成的流量不可忽略的实际情况,对全国地表水环境容量基于环境容量定义及基于一维模型的水环境容量计算公式进行修正;实例计算结果表明:用该方法计算的环境容量与污染物预测结果具有非常好的拟合性。文中水环境容量计算公式中相关参数的选取原则及修正公式,可为北方区域开发项目水环境剩余容量的计算提供借鉴。 相似文献
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The shadow price of substitutable sulfur in the US electric power plant: a distance function approach 总被引:1,自引:0,他引:1
Lee M 《Journal of environmental management》2005,77(2):104-110
Given restrictions on sulfur dioxide emissions, a feasible long-run response could involve either an investment in improving boiler fuel-efficiency or a shift to a production process that is effective in removing sulfur dioxide. To allow for the possibility of substitution between sulfur and productive capital, we measure the shadow price of sulfur dioxide as the opportunity cost of lowering sulfur emissions in terms of forgone capital. The input distance function is estimated with data from 51 coal-fired US power units operating between 1977 and 1986. The indirect Morishima elasticities of substitution indicate that the substitutability of capital for sulfur is relatively high. The overall weighted average estimate of the shadow price of sulfur is -0.076 dollars per pound in constant 1976 dollars. 相似文献
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Electric power generating plants that use coal were among the key targets of Title IV of the 1990 Clean Air Act. Under the
first phase of the act, 110 coal-fired electric power plants were required to reduce their sulfur dioxide emissions by 1995
and nitrogen oxide emissions by 1996. Phase 2 of the act requires even greater reduction of sulfur dioxide emissions by 2000
and nitrogen oxide emissions by 2008. This study examines whether the 107 targeted plants (three plants went off-line) have
achieved the desired sulfur dioxide and nitrogen oxide emission levels.
The analysis of sulfur dioxide is based on data from 1990, 1995, and 1999. The findings show that although sulfur oxide increased
by 3% from 1995 to 1999, it decreased by 45% over the 1990–1999 period at the firm level for the targeted firms. The findings
also indicate that the overall reduction in sulfur dioxide was achieved by utilizing low sulfur coal and by purchasing emission
allowances. So far as nitrogen oxides are concerned, there has been a reduction of 14% over the 1990–1999 period, of which
7% was achieved during the 1995–1999 period. An evaluation of emissions at the plant level indicates that several plants do
not meet the emissions level for sulfur dioxide or nitrogen oxides.
These results provide a mixed scorecard for reduction in emissions both for sulfur dioxide and nitrogen oxides. Even though
there is reduction in the emissions on an overall basis at the firm level, several plants that have not been able to reduce
emissions deserve special attention to meet the goals of the act in reducing emissions. 相似文献
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Kikuchi R 《Environmental management》2001,27(6):837-844
The major contributors to global acidification are sulfur oxides and nitrogen oxides emitted mostly by the burning of fossil
fuels. From the scientific point of view, it is necessary to make a clear distinction between sulfur dioxide and sulfur trioxide
when referring to sulfur oxides. These two air pollutants have different properties. This paper reports the following aspects:
the strong effect of sulfur trioxide on local human health (a case study of asthma in Yokkaichi), the problem of corrosion
caused by sulfur trioxide, the difference in analytical methods for determining sulfur dioxide concentrations and sulfur trioxide
concentrations, and the difference in removal methods for sulfur dioxide and sulfur trioxide. An important initiative at the
third European conference of environment ministers was that the issue of human health related to local air pollution should
be given priority over that of global pollution. The declines in the emissions of sulfur dioxide and nitrogen oxides have
mainly been effective in reducing acidification due to long-range transport. The reduction in sulfur trioxide may be more
effective in improving local human health mentioned in the initiative. 相似文献
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韩慧 《中国环境管理干部学院学报》2006,16(2):51-52,63
枣庄市一次能源消费以煤为主,空气污染为煤烟型污染。因而,必需采取调整产业结构,发展集中供热和联片采暖,开展清洁能源替代等综合措施控制二氧化硫污染。 相似文献
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张臻宇 《中国环境管理干部学院学报》2011,21(3):67-69
为实现上海市政府制定的二氧化硫减排目标,普陀区政府严格落实各项总量控制措施。"十一五"期间,二氧化硫排放从1 867.37 t/a降低到327.90 t/a,二氧化硫减排工作取得明显成效。介绍了上海市普陀区在二氧化硫减排工作中采取的措施,并提出优化产业结构、优化能源结构、加大对大气污染治理设施的监管力度等进一步削减和控制二氧化硫排放的对策。 相似文献
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总量控制是国家节能减排的主要手段,二氧化硫排放量控制是大气污染物削减的主要控制指标。在污染源普查数据统计分析的基础上,对伊宁市废气中二氧化硫排放按污染源和区域进行分担率研究,掌握并了解产生排放二氧化硫按污染源、区域、行业分布情况,确定伊宁市二氧化硫减排的重点行业和区域,为政府调整产业结构及企业合理布局提供决策依据。 相似文献
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