共查询到19条相似文献,搜索用时 843 毫秒
1.
中国危险废物处理处置技术现状和结构分析 总被引:3,自引:0,他引:3
在介绍危险性废物的概念,种类等基础上,对我国危险性危险性废物的处理处置现状进行了分析,并对废物的产生,处置结构和废物流等进行了评价,提出了未来我国危险性废物处理处置的规划方案。 相似文献
2.
简要论述了美国尤卡山项目研发的历史进程,讨论了该项目目前的进展状态,以及由此引出可供我国高放废物地质处置研发工作值得思考的若干问题。笔者认为,目前尤卡山项目进展受阻的主要原因是政治因素,而不是场址的自然条件和科学技术因素。关于该项目的不同意见之争还将会继续下去,最后可能只有通过进一步的科学论证和法律途径得以解决。 相似文献
3.
污水处理厂污泥处理处置方法 总被引:4,自引:0,他引:4
污泥是污水处理的伴生物,若不加以妥善处置,容易产生二次污染.污泥处理处置的目的是实现稳定化、无害化、减量化、资源化以及最终处置.本文主要介绍了污水处理厂污泥稳定化、无害化、减量化、资源化和最终处置的方法及利用途径. 相似文献
4.
讨论了在中、低放废物浅层处置时,黄土不同地层地质环境特性对其影响,并确定了最适宜的地层 相似文献
5.
主要介绍了永泰县旗山小区后山滑坡地质灾害的特征和应急处置措施,由于应急处置措施有效合理、行动及时,有效地防止了滑坡的大规模向下滑移,避免了一次可能发生的滑坡地质灾害的破坏。 相似文献
6.
自然灾害是给人类及其设施带来严重难的危害。本文试图在了解灾害的危害性基础上,以火山作用为例,在核废料处置库选址中,通过圈定灾害高发区、确定内险评价参数、划出高风险区及风险等级三步骤,对灾害风险性进行评价。 相似文献
7.
8.
通过对出让国有建设用地使用权改变用途等土地使用条件如何处理的法律法规政策规定的分析,结合工作实际,提出了如何处置的具体方式。 相似文献
9.
10.
11.
Hongli LI Shenggao CHENG 《中国地球化学学报》2006,25(B08):105-105
This study draws attention to the fact that natural processes can mobilize thallium (Tl), a highly toxic metal, which may enter the food chain with severe health impacts on the local human population. A rural area having independent Tl mineralization in southwestern Guizhou, China, was chosen for a pilot study. Tl contents of soils extracted by HNO3 in the study area range from 35-165 mg/kg in soils from the mining area, 14-78 mg/kg in alluvial deposits downstream, and 〈0.2-0.5 mg/kg in soils from the background area. Tl contents in ammonium acetate EDTA-extracted fraction are 0.013-1.3 mg/kg, less than 1% of concentration in HNO3-extracted fraction. The amounts of Tl in NH4Ac-extracted fraction were thought to be more exchangeable and bioavailable, i.e., immediately available to plants and/or available to plant roots over a period of years. Tl concentration in crops exhibits species-dependent preferences. The enrichment of Tl in edible crop species decreases in the following order: green cabbage〉chili〉Chinese cabbage〉rice〉com. The highest level of Tl in green cabbage is up to 500 mg/kg (DW), surpassing the values of Tl in the soils (13-59 mg/kg). The enrichment factor for TI in green cabbage is up to 1-10 when considering the HNO3-extracted Tl, but the factor highly rises to 30-1300 while considering the NH4Ac-extracted Tl. The average daily uptake of Tl by the local villagers through consumption of locally planted crops was estimated at about 1.9 mg per person, which is 50 times the daily ingestion from the Tl-free background area. 相似文献
12.
13.
堰塞湖是由于山体滑坡、崩塌、泥石流等堵塞河道形成的没有经过专门设计、没有专门的泄水设施的湖泊,一旦溃决,容易给下游造成巨大的灾难。分析了堰塞湖的成因、溃决机理与风险判断,提出堰塞湖应急处置的原则、理念、阶段与处置方法,总结了堰塞湖应急处置中的一些经验和认识。以四川省汶川特大地震形成的堰塞湖应急处置为例,从可能溃决方式、溃坝洪水、应急除险总体方案、开渠引流方案和除险效果等方面,介绍了唐家山堰塞湖的应急处置实践,并简要介绍了其它一些堰塞湖应急处置。 相似文献
14.
本文介绍了国内外城市垃圾的处置方法,阐明了垃圾埋场对地质环境的影响以及对垃圾堆埋场场址的选择要求。 相似文献
15.
16.
17.
Yue Huiguo 《岩土力学》1985,6(1):101-106
In this paper the current state of disposal of low-level radioactive wastes in U.S.A. is briefly introduced, the existing problems and influence are presented, some geotechnical designs for shallow-burial disposal are suggested so as to improve the prevention of contamination. 相似文献
18.
19.
Ahmed M. Youssef Adly A. Omer Mohamed S. Ibrahim Mohamed H. Ali Jeffrey D. Cawlfield 《Arabian Journal of Geosciences》2011,4(5-6):719-733
Land application is the only currently available technique for sewage wastewater disposal along the Nile Valley in Upper Egypt. Wastewater disposal projects have been established in the lowland desert zone extending between the cultivated floodplain and the Eocene Limestone plateau. The plan is to use the treated wastewater in irrigating woody farmlands. Some wastewater disposal sites are already operating, and several others will be established in the near future. The proposed wastewater disposal sites are located in a sensitive desert zone that is extremely narrow and situated very close to vital resources including the cultivated floodplain, reclaimed lands, residential areas, and surface water resources. In addition, the subsurface sediments of this zone (Pleistocene sand–gravel succession) constitute a significant part of the Quaternary aquifer of the valley. The objective of this study is to characterize and investigate the wastewater disposal sites and assess their probable environmental hazards. The study showed that the available lands are insufficient to accommodate the projected quantities of wastewater. At the currently operating sites, excess raw wastewater is accumulating on the ground surface forming large uncontrolled ponds. Such wastewater ponds represent a potential environmental hazard and might cause disastrous health effects, where chemical and bacteriological pollution of soil, crops and water resources may occur. 相似文献