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根据收集的青岛市九大类排放源的活动水平数据,本研究采用排放因子法结合调研实测等工作建立了青岛市VOCs源排放清单,结果表明,工业企业VOCs排放占总排放的比例达到43.17%。其中,工艺过程源类中排放占比较高的行业依次为橡胶和塑料制品业、非金属矿物制品业、原油加工及石油制品制造业、化学原料和化学制品制造业、黑色金属冶炼和压延加工业等;溶剂使用源类中排放占比较高的行业为金属制品业、皮革皮毛羽毛制品和制鞋业、印刷业、铁路船舶航空等设备制造业、汽车制造业等。通过对重点行业重点企业进行入场调研采样分析,本研究发现不同行业中VOCs组成特征有差异,多数行业VOCs物种排放以卤代烃、芳香烃、烷烃等为主,纺织印染业、制鞋业等部分行业以含氧有机物排放为主。通过调研和实测对部分行业的VOCs排放因子水平做了本地化深入研究,调研统计青岛市约49%的企业安装了VOCs治理设施;在企业所安装的VOCs治理设施中吸附法占比最大,占比为26%。 相似文献
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在鄂尔多斯盆地某采油厂开展油田挥发性有机物(VOCs)排放特征的研究,对油田企业有组织及无组织VOCs进行定性定量检测分析,得到不同区域VOCs排放特征和排放清单。结果表明:供热区、储罐区、装卸区、采出水处理区、设备动静密封点以及厂界共检测出59种物质,主要为烷烃类、烯烃类和芳香烃类,特征污染物包括乙烷、丙烷、丁烷、戊烷、己烷、乙烯、丙烯、丁烯、戊烯和苯。不同的VOCs排放区域应采取不同的控制措施,供热区可采用末端控制方法,储罐区、设备动静密封点和装卸区等可采用源头和过程控制方法。 相似文献
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随着我国对VOCs监测控制的持续推进,VOCs标准气体的配套应用及其管理思路也面临着新要求和挑战。本文通过梳理我国VOCs类标准气体对涉VOCs企业污染物监测和管理支撑的现状,指出了VOCs监测管理中对标准气体的应用要求尚待细化、已有VOCs标准气体应用不够充分、VOCs标准气体对排放标准实施的精准支撑作用不足等问题。在探究现状与问题的基础上,提出进一步细化VOCs排放监测对标准气体应用要求、加强企业自行监测中VOCs标准气体的应用指导、加强短缺标准气体的研制与应用的建议。 相似文献
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文章对国内20家炼化企业共计272套VOCs末端治理设施进行调研,统计了治理设施的设计处 理规模、VOCs进口浓度等信息。其中污水集输处理系统、工艺废气、储罐、装卸车系统是炼化企业VOCs 4大污染源。基于各治理设施的VOCs设计处理规模和进口浓度,建立了炼化企业VOCs末端治理设施排放估算 方法,按照污染源类别将各个治理设施的VOCs排放水平划分为4个等级,1级为最高,4级为最低。其中1级排放设施分别占比19.2%,24.6%,19.4%和24.3%,这说明目前我国炼化企业的VOCs处理量较大,排放管控不容松懈。此外,还统计了272套治理设施的治理技术,结合设施的排放等级,建立了炼化企业VOCs末端 治理技术评估表,基于此表能够为炼化企业对VOCs末端治理设施治理技术的比选提供指导。 相似文献
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正自2013年《大气污染防治行动计划》公布实施以来,各重点区域、省(市)及相关环保部门纷纷出台了《大气污染防治行动计划》实施细则/实施方案,其中挥发性有机污染物VOCs减排与控制已经成为大气污染防治的重点工作。为更好应对我国当前大气污染形势,推动行业排放治理,促进挥发性有机污染物VOCs的减排与控制,由中国环保产业协会废气净化委员会、挥发性有机污染物 相似文献
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城镇化是推动我国经济社会发展的重要动力,在高速发展的同时,带来大量污染排放,威胁乡村环境质量与可持续发展。在对乡村生态环境问题剖析的基础上,从战略、实施、方式等层面探索解决思路,围绕科学规划、发展方式、基础建设、管理机制、宣传教育等方面分析关键点,加强乡村环境保护,保障城镇化建设健康发展,为促进农村农业持续发展提供持久动力。 相似文献
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Trametes versicolor decolorized 2000 mg L(-1) of the mono-azo substituted naphthalenic dye Amaranth with no dye sorption observed visually. The changes in the toxicity were assessed over a period of 30 d for the dye-treated viable culture, control (no dye added), and a boiled culture treated with dye, using the Microtox Acute Toxicity assay. Before dye addition, the culture filtrate had some toxicity, which increased after the dye addition. The toxicity of the dye-treated culture decreased during the treatment. The loss of toxicity occurred at the same time, with the loss of color suggesting that detoxification is associated with decoloration. The change in pH was due to natural metabolic processes and had a small effect on detoxification. Because the toxicity of the treatment was similar to that of the control at the end of the treatment, the effluent seems to be safe for release into the environment, potentially rendering this treatment suitable for industrial application. 相似文献
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泵站树状给水管网流量具有随机性,而这种随机性变化会直接影响管网的建设费用和动力费用.针对这-特点,应用随机规划原理,建立泵站树状给水管网机会约束模型,编写基于随机模拟的遗传算法程序求解该模型.机会约束模型能较客观地反映该管网的实际工况,使优化设计结果更符合实际. 相似文献
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Günay Kocasoy 《Environmental management》1989,13(4):469-475
The increase in the number of tourists visiting a coast is desired by most of the countries for economic reasons. However, this increase in tourism may cause pollution of the sea. This can be only avoided by proper planning and by predicting the carrying capacity of the coast in terms of sea pollution. This is especially important for developing countries where part of the wastewater is discharged without any treatment into the sea.In the present study the beaches were classified according to their use — and consequently the amount of waste discharged into the sea — into four groups: (1) coasts that are used only for swimming and recreational purposes; (2) coasts used simultaneously for dwelling, swimming, and recreational purposes; (3) coasts along which only dwellings exist; and (4) natural and man-made harbors, i.e., coasts used as shelters. During the survey,40,320 observations were made between December 1985 and February 1988 to determine the effect of the number of tourists on seawater quality. The results obtained were analyzed by a multilinear regression program to obtain an empirical equation giving the extent of the sea pollution in terms of coliform concentration as a function of population density and some other environmental factors.The equations derived in this study enable the determination of the carrying capacity of a beach in terms of pollution as well as the expected degree of pollution corresponding to a given population density. Furthermore, it allows the prediction of the extra carrying capacity that can be obtained by improving the waste-disposal conditions. 相似文献
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阐释了信息产业专门化街区的内涵,结合对合肥市黄山路信息产业专门化街区构成要素的分类及其邻近度的分析,分别从空间结构演化、景观演化、功能演化三方面阐述了合肥市黄山路由"电子一条街"向"信息产业专门化街区"的总体演化阶段,探讨了信息产业专门化街区的未来发展趋势。 相似文献
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