共查询到20条相似文献,搜索用时 218 毫秒
1.
2.
控制我国SO2污染已势在必行,本文对控制SO2污染的战略思想,战略部署进行了探讨,认为高硫煤地区的SO2污染控制尤为重要,并对实施SO2污染控制战备提供了若干建议。 相似文献
3.
通过对个旧市2000年和2010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2000年至2010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
4.
乌鲁木齐市SO2污染现状调查与成因分析 总被引:1,自引:0,他引:1
乌鲁木齐市是煤烟型污染较为严重的城市之一,特别是采暖期SO2地面浓度日均值通常超出大气环境质量二级标准的2倍左右。1998年供暖期环境空气中SO2年度日均值为0.105mg/m3,是国家二级标准的1.8倍。为改善大气环境质量,配合《乌鲁木齐市冬季大气污染治理方案》的实施,通过对乌鲁木齐市SO2污染现状调查及成因分析,就如何预防SO2对乌鲁木齐市环境空气的污染进行了探讨。 相似文献
5.
硅酸盐工业灰渣的基本化学成人是CaO、SiO2,Al2O3等,目前主要用于生产水泥等建筑材料, 西方对工业灰渣CaO-SiO2-Al2O3三元系高钙相平衡过程进行了分析讨论和数学处理。 相似文献
6.
粉尘、SO2等的煤烟型复合污染是我国尤其是南方污染区的主要类型。大气监测结果表明粉尘、SO2和NOx均超过国家标准,对中等抗性的柑桔树分别造成了不可见的生理伤害(粉尘已造成可见伤害),并通过对其叶片S含量和叶上蒙尘量的测定得到进一步证实。它们长期的复合污染加剧了这种伤害,导致桔树生长失调,长势差,桔果产量连年下降,品质衰变。 相似文献
7.
本文通过对连续采样和间断采样监测大气SO2浓度的对比实验数据进行分析,认为24h逐时间断采样的SO2浓度平均值和连续采样的SO2日平均浓度之间没有偏差,而几个时刻间断采样的平均值与连续值采样的日平均浓度存在显著性差异。 相似文献
8.
9.
针对历史遗留含油污泥处置清零的要求,冀东油田通过技术优选最终确定采用水泥窑协同处置方式。文章从工艺技术分析、环境影响分析两方面分析了工艺的可行性,该技术处置效率高、处理规模大、避免了产生废气造成“二次污染”,减少了污染物的排放。从原料分析、处置流程及运输、转移、应急处置几方面分析了该方案实施中的实际问题和要求。实验结果和应用情况表明,冀东油田含油污泥按照1%的比例掺加在生料中,可以满足入窑要求,水泥的理化性质满足水泥厂出厂技术要求。尾气排放均满足DB 13/2167—2020《水泥工业大气污染物超低排放标准》、GB 30485—2013《水泥窑协同处置固体废物污染控制标准》相关要求。该技术可为其他油田企业水泥窑协同处置含油污泥提供参考和借鉴。 相似文献
10.
粉尘,SO2,NOx等的煤烟型复合污染是我国尤其是南方我的主要类型。本文根据实验观测,详细分析了主要污染物间的相互作用过程及其复污染物从产生,转移至植物界面的运动过程及其特点。 相似文献
11.
水泥回转窑烟气治理探讨 总被引:1,自引:0,他引:1
介绍了国家对水泥产业的政策和水泥回转窑含尘气体排放标准,分析了水泥回转窑收尘研究的进展情况及收尘效果,对电收尘器及袋收尘器的收尘效果作了比较,并提出了废旧滤袋二次污染问题。 相似文献
12.
总结了涪陵页岩气田开发初期钻井岩屑采用固化填埋方式处置存在占地面积大且易产生二次污染隐患等问题,因地制宜地探索钻井岩屑的资源化利用。分析了水基岩屑随钻预处理和油基岩屑热脱附技术,结合钻井岩屑的理化性质,开展了水基岩屑脱水后干渣制路基材料、制砖及水泥窑协同处置,油基岩屑灰渣制混凝土、制砖及水泥窑协同处置的探索和实践,基于环境安全、技术稳定可靠、消纳量大的原则,最终形成了涪陵页岩气田钻井岩屑资源化方案:水基岩屑"随钻预处理、水泥窑协同处置",油基岩屑"热脱附、水泥窑协同处置",实现了钻井岩屑的资源化综合利用。 相似文献
13.
This paper discusses the options for the development of Tanzania's cement industry to meet the country's growing cement needs. It evaluates possible options and supports the use of dispersed small-scale vertical kiln plants to increase the capacity for Portland cement production. It also encourages the use of alternative cementitious materials in the many applications where this is possible. 相似文献
14.
15.
《Resources, Conservation and Recycling》2007,49(4):315-338
Solid waste management is one of the major environmental concerns around the world. Cement kiln dust (KKD), also known as by-pass dust, is a by-product of cement manufacturing. The environmental concerns related to Portland cement production, emission and disposal of CKD is becoming progressively significant. CKD is fine-grained, particulate material chiefly composed of oxidized, anhydrous, micron-sized particles collected from electrostatic precipitators during the high temperature production of clinker. Cement kiln dust so generated is partly reused in cement plant and landfilled. The beneficial uses of CKD are in highway uses, soil stabilization, use in cement mortar/concrete, CLSM, etc.Studies have shown that CKD could be used in making paste/mortar/concrete. This paper presents an overview of some of the research published on the use of CKD in cement paste/mortar/concrete. Effect of CKD on the cement paste/mortar/concrete properties like compressive strength, tensile strength properties (splitting tensile strength, flexural strength and toughness), durability (Freeze–thaw), hydration, setting time, sorptivity, electrical conductivity are presented. Use of CKD in making controlled low-strength materials (CLSM), asphalt concrete, as soil stabilizer, and leachate analysis are also discussed in this paper. 相似文献
16.
Solid waste management is one of the major environmental concerns around the world. Cement kiln dust (KKD), also known as by-pass dust, is a by-product of cement manufacturing. The environmental concerns related to Portland cement production, emission and disposal of CKD is becoming progressively significant. CKD is fine-grained, particulate material chiefly composed of oxidized, anhydrous, micron-sized particles collected from electrostatic precipitators during the high temperature production of clinker. Cement kiln dust so generated is partly reused in cement plant and landfilled. The beneficial uses of CKD are in highway uses, soil stabilization, use in cement mortar/concrete, CLSM, etc.Studies have shown that CKD could be used in making paste/mortar/concrete. This paper presents an overview of some of the research published on the use of CKD in cement paste/mortar/concrete. Effect of CKD on the cement paste/mortar/concrete properties like compressive strength, tensile strength properties (splitting tensile strength, flexural strength and toughness), durability (Freeze–thaw), hydration, setting time, sorptivity, electrical conductivity are presented. Use of CKD in making controlled low-strength materials (CLSM), asphalt concrete, as soil stabilizer, and leachate analysis are also discussed in this paper. 相似文献
17.
18.
在对水泥生产线篦冷机尾气除尘进行分析的基础上,提出了电除尘改袋式除尘的必要性,可有效控制新型干法窑烟尘和粉尘的排放浓度;针对具体案例的使用结果进行了阐述。 相似文献
19.