全文获取类型
收费全文 | 284篇 |
免费 | 4篇 |
国内免费 | 20篇 |
专业分类
安全科学 | 5篇 |
废物处理 | 71篇 |
环保管理 | 56篇 |
综合类 | 94篇 |
基础理论 | 8篇 |
污染及防治 | 42篇 |
评价与监测 | 27篇 |
社会与环境 | 3篇 |
灾害及防治 | 2篇 |
出版年
2023年 | 4篇 |
2022年 | 3篇 |
2021年 | 6篇 |
2020年 | 9篇 |
2019年 | 2篇 |
2018年 | 4篇 |
2017年 | 5篇 |
2016年 | 5篇 |
2015年 | 7篇 |
2014年 | 37篇 |
2013年 | 22篇 |
2012年 | 13篇 |
2011年 | 9篇 |
2010年 | 6篇 |
2009年 | 8篇 |
2008年 | 15篇 |
2007年 | 24篇 |
2006年 | 18篇 |
2005年 | 17篇 |
2004年 | 16篇 |
2003年 | 16篇 |
2002年 | 11篇 |
2001年 | 12篇 |
2000年 | 7篇 |
1999年 | 10篇 |
1998年 | 9篇 |
1997年 | 2篇 |
1996年 | 2篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1991年 | 1篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 1篇 |
排序方式: 共有308条查询结果,搜索用时 31 毫秒
271.
Ohman KV Hettiaratchi JP Ruwanpura J Balakrishnan J Achari G 《Environmental monitoring and assessment》2007,135(1-3):85-97
The application of scientifically based decision making tools to help address solid waste management issues dates back to
the early 1960s. Researchers continue to use operations research tools to help optimize landfill design and operating parameters.
This paper discusses the application of another type of decision making tool, the analytical hierarchy process (AHP), to address
priority ranking for a number of landfill engineering design and operating objectives in developing and developed countries.
In this application, the AHP is used to rank, and prioritize, economic, environmental, health and safety, legislative and
public perception objectives for landfill design and operations specific to landfill distance from a community, and precipitation
levels. Results from a global survey using the Delphi process are included, with a discussion on the survey’s impact on the
objective rankings relative to community proximity and precipitation. The Delphi process worked extremely well, and was an
excellent tool to use in this application. The initial results from the objective rankings show promise in the development
of an integrated model for landfill design and operation. 相似文献
272.
Rawat M Singh UK Mishra AK Subramanian V 《Environmental monitoring and assessment》2008,137(1-3):67-74
In this study, an attempt has been made to study methane flux and quantification of heavy metals from Municipal Solid Waste
(MSW) landfill areas of selected cities in India. During the period of study, the average value of methane flux was estimated
from these landfill areas varied from 146–454 mg/m2/h. Methane emission from landfill is of serious environmental global concern
as it accounts for approximately 15 percentages of current Greenhouse gas emissions. It has been estimated that methane emission,
from landfill areas in the world, in next two decades would be same as that what is emitted from paddy fields presently. Besides,
the estimation of methane flux, quantification of some heavy metals was conducted to analyse the suitability of using MSW
as compost. The average values for metals were observed to be both within the range of USEPA and Indian standards for MSW
disposal in landfill areas and to be used as compost respectively. 相似文献
273.
城市垃圾填埋场渗滤液中污染物检测与分析 总被引:1,自引:0,他引:1
垃圾渗滤液水质复杂,危害性大,对其无害化处理尚未得到很好解决。溶解性有机物(DOM)是导致渗滤液处理难以达标的主导性污染物。采用GC-MS技术可将渗滤液中DOM标识划分为亲水性和疏水性两类物质,为DOM的针对性处理提供了新的思路。采用ICP-AES从渗滤液中检测出美国环境保护局颁布的13种优先污染重金属中的11种,其含量大幅超标。废弃的电子材料、颜料涂料、电池以及药物等物质的不分类收集是导致渗滤液中重金属浓度超标、毒性增强的主要原因。在垃圾渗滤液处理领域,认为BOD5/COD小于0.3就不可以采用生物法处理的传统观点已经不符合实验与工程现实。通过检测与分析,掌握了垃圾渗滤液的水质特性与污染源头,能够为制定切实可行的处理方案提供借鉴。 相似文献
274.
Poblete R Prieto-Rodríguez L Oller I Maldonado MI Malato S Otal E Vilches LF Fernández-Pereira C 《Chemosphere》2012,88(9):1090-1096
The treatment of municipal solid waste landfill leachate in a pilot plant made up of solar compound parabolic collectors, using a solid industrial titanium by-product (WTiO2) containing TiO2 and Fe(III) as a photocatalyst, was investigated. In the study evidence was found showing that the degradation performed with WTiO2 was mainly due to the Fe provided by this by-product, instead of TiO2. However, although TiO2 had very little effect by itself, a synergistic effect was observed between Fe and TiO2. The application of WTiO2, which produced coupled photo-Fenton and heterogeneous catalysis reactions, achieved a surprisingly high depuration level (86% of COD removal), higher than that reached by photo-Fenton using commercial FeSO4 (43%) in the same conditions. After the oxidation process the biodegradability and toxicity of the landfill leachate were studied. The results showed that the leachate biodegradability was substantially increased, at least in the first stages of the process, and again that WTiO2 was more efficient than FeSO4 in terms of increasing biodegradability. 相似文献
275.
276.
Ford RG Acree SD Lien BK Scheckel KG Luxton TP Ross RR Williams AG Clark P 《Chemosphere》2011,85(9):1525-1537
Discharge of contaminated ground water may serve as a primary and on-going source of contamination to surface water. A field investigation was conducted at a Superfund site in Massachusetts, USA to define the locus of contaminant flux and support source identification for arsenic contamination in a pond abutting a closed landfill. Subsurface hydrology and ground-water chemistry were evaluated in the aquifer between the landfill and the pond during the period 2005-2009 employing a network of wells to delineate the spatial and temporal variability in subsurface conditions. These observations were compared with concurrent measures of ground-water seepage and surface water chemistry within a shallow cove that had a historical visual record of hydrous ferric oxide precipitation along with elevated arsenic concentrations in shallow sediments. Barium, presumably derived from materials disposed in the landfill, served as an indicator of leachate-impacted ground water discharging into the cove. Evaluation of the spatial distributions of seepage flux and the concentrations of barium, calcium, and ammonium-nitrogen indicated that the identified plume primarily discharged into the central portion of the cove. Comparison of the spatial distribution of chemical signatures at depth within the water column demonstrated that direct discharge of leachate-impacted ground water was the source of highest arsenic concentrations observed within the cove. These observations demonstrate that restoration of the impacted surface water body will necessitate control of leachate-impacted ground water that continues to discharge into the cove. 相似文献
277.
278.
近年来,工业化与城市化的快速发展,虽然创造了巨大的经济效益,提升了整体的发展水平,但是也带来了一系列的发展问题,比如,城市生产生活垃圾的增多,使得各个城市面临着较大的垃圾回收与处理压力。垃圾填埋场的存在能够实现城市生产生活垃圾的有效处理。但是,当前,一些城市的垃圾填埋场存在着严重的渗漏问题,不仅造成了土地污染,还影响了垃圾处理效果。基于此,本文分析了垃圾填埋场渗漏类型,并提出了相应的防渗修复措施,有利于保障垃圾填埋场的有效运行。 相似文献
279.
280.
Combining GIS with fuzzy multicriteria decision-making for landfill siting in a fast-growing urban region 总被引:6,自引:0,他引:6
Landfill siting is a difficult, complex, tedious, and protracted process requiring evaluation of many different criteria. This paper presents a fuzzy multicriteria decision analysis alongside with a geospatial analysis for the selection of landfill sites. It employs a two-stage analysis synergistically to form a spatial decision support system (SDSS) for waste management in a fast-growing urban region, south Texas. The first-stage analysis makes use of the thematic maps in Geographical information system (GIS) in conjunction with environmental, biophysical, ecological, and socioeconomic variables leading to support the second-stage analysis using the fuzzy multicriteria decision-making (FMCDM) as a tool. It differs from the conventional methods of integrating GIS with MCDM for landfill selection because the approach follows two sequential steps rather than a full-integrated scheme. The case study was made for the city of Harlingen in south Texas, which is rapidly evolving into a large urban area due to its vantage position near the US-Mexico borderlands. The purpose of GIS was to perform an initial screening process to eliminate unsuitable land followed by utilization of FMCDM method to identify the most suitable site using the information provided by the regional experts with reference to five chosen criteria. Research findings show that the proposed SDSS may aid in recognizing the pros and cons of potential areas for the localization of landfill sites in any study region. Based on initial GIS screening and final FMCDM assessment, "site 1" was selected as the most suitable site for the new landfill in the suburban area of the City of Harlingen. Sensitivity analysis was performed using Monte Carlo simulation where the decision weights associated with all criteria were varied to investigate their relative impacts on the rank ordering of the potential sites in the second stage. Despite variations of the decision weights within a range of 20%, it shows that "site 1" remains its comparative advantage in the final site selection process. 相似文献