大气污染源排放清单与环境统计数据的比较分析

比较了大气污染排放清单与环境统计报表的数据采集思路和方法,基于2016年京津冀大气污染传输通道"2+26"城市的排放清单和同年环境统计数据,采用配对样本t检验和相关分析,在总体、城市和行业层面,对SO_2、NO_x、VOCs等3项污染物排放指标的差异性和一致性进行了比较分析。研究结果表明,排放清单与环境统计数据有显著差异,多数情况下,排放清单数据高于环境统计,两者同时具有显著正相关,因此,差异为系统性偏差。建议加强环境统计与排放清单之间的数据共享、交互验证和相互融合,促进两者核算方法的共同完善,减少数据的多源冲突,最终建立一个统一的数据体系作为环境管理的决策依据。     

建筑物安全性评定体系的研究

现有建筑物是一个复杂的系统,具有诸多不同于拟建建筑物的特点,其安全性评定要涉及许多特殊的问题。首先阐述建筑物安全性评定的基本内容,其次建立建筑物安全性评定体系,对承重系统中的上部结构和地基基础的安全性评价体系进行深入讨论。     

火电厂二氧化硫排放行为分析

火电厂是二氧化硫排放大户。从企业层面和国家层面上对火电厂二氧化硫排放行为和形势进行了分析和总结,以期为环境管理服务。     

Characterization of metal doped-titanium dioxide and behaviors on photocatalytic oxidation of nitrogen oxides

A series of nanosized ion-doped TiO_2 catalysts with different ion content(between 0.1 at.% and 1.0 at.%) have been prepared by wet impregnation method and investigated with respect to their behavior for UV photocatalytic oxidation of nitric oxide.The catalytic activity was correlated with structural,electronic and surface examinations of the catalysts using X-ray diffraction analysis (XRD),ultraviolet-visible(UV-Vis)absorption spectroscopy,transmission electron microscopy(TEM),energy disperse spectrometer (EDS)and high resolution-transmission electron microscopy (HR-TEM) techniques.An enhancement of the photocatalytic activity was observed for Zn~(2 ) doping catalyst ranged from 0.1 at.% to 1.0 at.% which was attributed to the lengthened lifetime of electrons and holes.The improvement in photocatalytic activity could be also observed with the low doping concentration of Cr~(3 )(0.1 at.%). However,the doping of Fe~(3 ),Mo~(6 ),Mn~(2 ) and the high doping concentration of Cr~(3 ) had no contribution to photocatalytic activity of nitric oxide.     

Phytoremediation and its models for organic contaminated soils

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三峡库区及上游污染的地域结构及对策研究

确保三峡库区水环境安全是全国环保工作的重点之一.本文按照库区、影响区、上游区三个圈层的地域结构,对污染排放数据进行了统计,对污染构成的变化、污染产业的经济贡献和污染负荷比重、污染排放强度进行了统计分析,结合污染影响的地域结构变化趋势,提出了对策措施.     

Assessment of China''''s economic loss resulting from the degradation of agricultural land in the end of 20th century

IntroductionUnderanintegratedactionofhumaneconomicactivitiesandsomeadversenaturalfactors,farmlanddegradationisadynamicprocessthatcanleadtoanunbalancingofecologicalsystems,worseningofsoilquality ,adeclineinsoilrenewablecapacity ,andaweakeningofsoilcarryingcapacity.Usually ,thedegradationofagriculturallandincludesadiminishingofvegetation ,soildeterioration ,andnaturaleco environmentaldegradation .Farmlanddeteriora tionhasatwofoldmeaning :qualityandquantity .Allofthephenomenaandprocessesbroughtab…     

Dissimilatory reduction of Fe~III (EDTA) with microorganisms in the system of nitric oxide removal from the flue gas by metal chelate absorption

IntroductionThecombustionoffossilfuelsgeneratesSO2 andNOxpollutantswhichcauseairpollutionandacidrain .Existingfluegasdesulfurization(FGD)scrubbersinvolvelimestoneprocesses,whichareefficientforcontrollingSO2 emission ,butareincapableofremovingalmostwater i…     

基于循环经济的环境信息服务研究

本文阐述了循环经济对信息的需求.分析了信息在微观、中观与宏观层面上的作用机理.对循环经济企业所需要的法律、法规服务,再生资源信息服务,生态工业技术咨询服务,再生资源知识地图等方面进行了研究.同时提出发展环境信息服务的手段和途径.     

龙岩高岭土矿露采边坡稳定性分析

一、概况 龙岩高岭土矿于1991年开始建设,1994年投产,到2003年生产高岭土原矿58.9万吨/年、精矿3.63万吨/年.露天采场位于矿区内地质勘探线2-16线之间,开采地段为低山丘陵地形,南北向山从地段中西部通过,南端山顶标高527.08m;北端山顶平缓,最高为520.3m,东西两面坡向,地形坡度在20°-30°之间,西坡段陡、东坡一般缓和一些.东部沿山坡可一直下到龙津河(九龙江上游),河西岸标高309m.矿段最低侵蚀基准面标高310m.地表境介为600m(长)×450m(宽),露天采矿场坑底为180m(长)×150m(宽),露天采矿场采剥水平最高510m,最低360m..