首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 46 毫秒
1.
《地下水》2020,(2)
通过分析蚌埠市现有垃圾处置场现状和环境地质条件,利用层次分析法和相应的评价模型对蚌埠市城市垃圾填埋场选址进行评价,结果表明:蚌埠市现有的垃圾处置场选址能够满足垃圾处理和环境保护要求。蚌埠市生活垃圾焚烧发电厂建成并投入使用,市区生活垃圾无害化处理能够得到进一步保障。但随着城市发展、人口增长带来的垃圾量的不断增加,蚌埠市生活垃圾处理将出现较大缺口。垃圾处理方式除焚烧、填埋外还应该大力倡导垃圾分类,增加垃圾综合利用率,因地制宜探索适合自身实际的垃圾处理方式,实现垃圾无害化、资源化、产业化处理。  相似文献   

2.
城市垃圾填埋的主要环境地质问题   总被引:7,自引:0,他引:7  
城市绝大多数垃圾填场设在土体中,土体性质是影响垃圾处理的一个重要因素。研究垃圾处理场中各种物质与地质环境的相互作用是环境地须学的一个重要议题。垃圾处理的环境地质研究主要包括以下几个方面:垃圾填埋场中的各种化学反应;垃圾填埋场中各种有害物质对环境的污染;垃圾填埋场的设计;垃圾填埋场泄漏废液的处理。  相似文献   

3.
根据广西自然、社会经济、垃圾组成等具体情况和垃圾处理的技术经济性比较,结合国内外垃圾处理技术进展,广西绝大部分城镇生活垃圾在未来一段时间内适宜选择卫生填埋,但广西地质作用复杂,岩溶发育,崩塌、滑坡、泥石流等较为频繁,易引发工程地质、水文地质问题,选址需要结合地理信息系统,并加强工程地质勘察和水文地质勘察。  相似文献   

4.
蒸散覆盖垃圾填埋场研究进展   总被引:1,自引:0,他引:1  
张文贤  张展羽  王康 《地下水》2009,31(5):147-153
随着我国人口的增加,生活垃圾产量也在急剧上升.垃圾处理方式就显得非常重要,传统的屏障型垃圾填埋覆盖层是强制防渗,蒸散覆盖垃圾填埋场渗沥控制理论是通过土壤水库对降雨进行蓄存,通过植物腾发消耗水分避免深层渗漏.对新理论从蒸散覆盖机理、水量平衡模型、数值模型、吸水模型等方面进行了总结、概述国内外有关研究现状,并提出了未来研究重点.  相似文献   

5.
徐兰 《黑龙江地质》2000,11(3):44-48
城市垃圾问题是影响城市环境的一个重要因素,已引起世界各国的普遍重视。垃圾包围城市的现状正困扰着许多城市。因此,城市垃圾 的综合处理已成为保护城市环境、保护城市发展和建设必须解决的问题之一,本文以哈尔滨市为例,探讨了各种垃圾处理方法的可行性,提出了实现垃圾减容化、无害化、资源化的措施。  相似文献   

6.
我省城市污水、垃圾处理设施建设起步较晚,至2001年底,我省城市污水处理率仅24%,落后于全国平均水平12个百分点,垃圾无害化处理率仅64.7%,大多数中小城市由于建设资金困难还未建设污水处理厂和垃圾无害化处理场,生活垃圾未经处理简易堆放,污水直接排放,不同程度造成了环境污染,影响  相似文献   

7.
Mich.  L 朱桂芳 《世界地质》1992,11(2):71-77
德国的垃圾处理问题已经通过地上和地下处理两种措施得以解决。文中讨论处置场地的不同类型,阐明一般场地的选择标准和关于不同垃圾处理类型效果评价的更精确的标准。从长期安全度观点出发,除纯粹的工程观点外,还应包括地质和水文地质的观点。许多讨论地质体和垃圾间矛盾的研究工作正在进行。有关有毒物质和作为隔离体地质体之间长期相互作用的一些研究成果已在文中列出,联邦德国的有毒物质处理指南目前正在制定。  相似文献   

8.
近年来,全国各地新建了大量的垃圾填埋场,其中多有不符合垃圾处理处置场地建设规范的,垃圾填埋场渗滤液对地下水的污染风险也逐年凸显,这就要求对后续垃圾填埋场建设时,在环评阶段做好垃圾填埋场渗滤液对地下水的污染风险预测,为垃圾填埋场地下水污染预防设施的设计与建设提供指导。本文探索了垃圾渗滤液在包气带和含水层中的联合运移模拟,首先利用Hydrus建立包气带模型,模拟垃圾渗滤液中氨氮在包气带中的迁移转化,在此基础上用Visual Modflow软件建立地下含水层模型,对比渗滤液经过包气带过滤和没经过包气带过滤两种情景下的污染范围和程度。模拟结果显示,包气带和含水层联合运移模拟渗滤液泄漏后的运移途径和路线,更接近渗滤液进入含水层的实际情况。  相似文献   

9.
修晓龙 《福建地质》2023,(3):231-235
根据霞浦三洲村附近海域的岸段海漂垃圾的来源、分布特征、组合类型及变化情况进行实地调查取证,再通过无人机对沿岸附近开展航拍与海漂垃圾遥感监测信息提取与评价研究工作。以无人机航拍影像为数据源,采用人机交互解译的方式对研究区内的海漂垃圾进行信息提取,结合野外调查,快速、客观地查明海漂垃圾的分布、类型及面积等,并提出采用网格法对研究岸段的海漂垃圾分布情况进行分析,结果表明,在研究区内海漂垃圾以渔业垃圾为主,占总海漂垃圾60.64%,海漂垃圾分布密度为582.89 m2/hm2,为海漂垃圾的综合整治工作提供基础数据,且为开展同一类型的研究工作提供参考。  相似文献   

10.
以济南市生活垃圾处理技术为研究对象,根据济南市生活垃圾的特性,以选择科学合理的处理方案为目标层,构建层次结构模型。运用两两比较的方法,对指标进行归一化处理,对各个判断矩阵进行一致性检验以确定各准则层对目标层的权重以及各方案层对准则层的权重,并进行综合评价,对拟选用的4种生活垃圾的处理方案进行了比较。结果表明,采用经过分选后,对热值高的可燃烧物进行焚烧处理,对不可燃物以及焚烧残渣进行卫生填理的方案为最优的方案。  相似文献   

11.
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco.  相似文献   

12.
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.  相似文献   

13.
Robert L. Linnen   《Lithos》2005,80(1-4):267-280
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species.  相似文献   

14.
Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931.  相似文献   

15.
PALEONTOLOGY     
正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.)  相似文献   

16.
正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.)  相似文献   

17.
正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.)  相似文献   

18.
PETROLOGY     
正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus.,  相似文献   

19.
正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an  相似文献   

20.
正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号