废物资源化利用的理论与方法——基于沱牌集团的应用分析     

李孔岳  金森 《地域研究与开发》2001,20(1):23-26

文章通过对废物资源化利用的历史回忆，从能量一经济－环境的复合系统，论述了能量的投入推动着经济的发展，经济发展又会带来环境的破坏，要在经济发展的同时减少环境的污染程度，不能采取简单的末端治理方式，而应从能量投入的源头开始治理，为此，要采取清洁的生产方式，减少废物排放量，并把真正的废物进行资源化利用，确保系统的完备性，做到能量投入减量化，经济发展,高速化，环境污染低量化，由此，结合沱牌集团的计划项目，我们模拟了沱牌集团废物资源化利用的框架，并用具体实例进行分析。  相似文献   

London: a sustainable city?     

《Area》2001,33(1):77-106

Observations include:
Ian Livingstone, London: a sustainable city?, p.77
Michael Parkinson, Key challenges for European cities: achieving competitiveness, cohesion and sustainability, p.78
Chris Hamnett, London's housing, p.80
Sarah Curtis, Health in London, p.84
Martin Frost, London's transport—investing for sustainability, p.92
Chris Birks, Mike Owen and Brian Arkell, London's water resources: threat or opportunity, p.92
Sean D Beevers, David C Carslaw and Gary W Fuller, London's air quality: nitrogen dioxide and particles (PM10) in London's air—present and future, p.97
Adam D Read, Where there's muck there's brass—the 'cost' of London'swaste?, p.103  相似文献   

中国高放废物处置库选址中灵敏地质特征的初步确认   总被引：5，自引：0，他引：5  

陈伟明  王驹  若杉圭一郎 《铀矿地质》2001,17(2):65-69,96

本文首先根据中国、瑞士和日本3国高放废物处置概念的相似性，建立中国第一处置库系统性能评价模型；然后通过对9个地质变量在8个事件中的灵敏度分析，初步确认出3个灵敏地质物征。此项研究对中国目前高放废物处置库选址工作有一定的指导意义。  相似文献   

云南会泽麒麟厂铅锌矿床构造地球化学及定位预测   总被引：22，自引：1，他引：22  

韩润生  陈进  李元  马德云  高德荣  赵德顺 《矿物学报》2001,21(4):667-673

在论述构造地球化学基本理论与方法的基础上，深入讨论了会泽麒麟厂铅锌矿床构造地球化学特点，认为构造地球化学异常集中区是进行隐伏矿定位预测的重要依据，提出了1571中段44－62剖面线间的深部等重点定位找矿靶区，已被验证工程证实，新发现八号隐伏矿体。该方法对隐伏矿定位预测和评价具有重要指导意义。  相似文献   

KN系列难降解有机废水处理新药剂的研制及应用     

戴惠新  王春秀 《矿物学报》2001,21(3):467-469

KN系列污水处理剂对不同污水采用多孔、层状非金属矿经活化复配而成，不仅对难降解有机废水具有良好的处理效果，也可用于易生物降解废水，并且价格低，相关工艺具有占地少、投资省、运转费用低的特点。所产生的污泥脱水性能好，并可无害化最终处理，不产生二次污染。  相似文献   

Hydrogeologic studies for nuclear-waste disposal in Sweden     

Douglas D. Walker  Björn Gylling  Anders Ström  Jan-Olof Selroos 《Hydrogeology Journal》2001,9(5):419-431

Safety Report 1997 (SR 97) of the Swedish Nuclear Fuel and Waste Management Company is a comprehensive performance assessment of three hypothetical radioactive waste repositories in Sweden. It includes hydrogeologic studies (data compilation, parameter synthesis, and groundwater flow modeling) to determine groundwater flow and the associated uncertainties for the three sites. This report reviews and compares the hydrogeologic characterization programs, the site characteristics, and the groundwater flow models used in the SR 97 performance assessment. Although differences in site-characterization programs tend to mask differences in site characteristics, the sites do have notable differences that affect the results of the performance assessment. The effects of model uncertainties evaluated by the variant cases appear to be smaller than the variability of results for the base case (best estimate of site conditions) of each site. Electronic Publication  相似文献   

伊乐藻,轮叶黑藻净化养鱼污水效果试验   总被引：27，自引：0，他引：27  

高光 《湖泊科学》1996,8(2):184-188

在实验室条件下.对伊乐藻及轮叶黑藻净化养鱼污水的能力进行了比较研究。结果表明:(1)伊乐藻和轮叶黑藻对养鱼污水中的N、P等物质有较好的净化效果。在96h内,它们对TN、TP、PO_4~(3-)-P、NH_4~+-N、NO_3~--N、COD_(Mn)的平均净化率分别为:60.7％,53.6％.74.4％.59.7％,75.1％,63.2％;61.8％,54.2％.85.3％,81.8％,31.4％,33.5％。(2)水生植物在净化过程中,其效率受温度、光照、及水体中营养盐浓度等外界条件的制约。(3)微生物在水生植物净化养鱼污水的过程中起着重要的作用。  相似文献   

PAN－PVAβ修正新光度法测定地表水中的微量锌     

唐祖光  冯正光  但德忠  喻立艳  刘彩红 《矿物岩石》1995,(3)

本文研究了ｚｎ（Ⅱ）与ＰＡＮ和ＰＶＡ在ＮＨ＿４Ｃｌ－ＮＨ＿４ＯＨ缓冲介质中的显色反应，提出在５２０ｎｍ处用β修正新光度法测定微量锌。该法可准确消除剩余显色剂的干扰，分析精密度、灵敏度和线性范围均比单波长高，修正吸光度（Ａ＿ｓ）与Ｚｎ（Ⅱ）浓度在０－１．４μｇ／ｍｌ符合比耳定律，检出限０．０２μｇ／ｍｌ，样品加标回收率／％９３－９６，方法适合环境水样中锌的测定。  相似文献   

Mineralogical and geochemical behavior of mill tailing material produced from lead-zinc skarn mineralization,Hanover, Grant County,New Mexico,USA   总被引：3，自引：0，他引：3  

I. F. Walder  W. X. Chavez Jr. 《Environmental Geology》1995,26(1):1-18

Mineral extraction and processing, especially metal mining, produces crushed and milled waste; such material, exposed to weathering, poses the potential threat of environmental contamination. In this study, mill tailings from inactive Pb-Zn mines in New Mexico, southwest USA, have been examined for their potential environmental impacts by means of detailed mineralogical and geochemical characterization. The principal ore minerals remaining in the tailings material are sphalerite, chalcopyrite, and very minor galena, smithsonite, and cerrusite, accompanied by the gangue minerals pyrite, pyrrhotite, magnetite, hematite, garnet, pyroxene, quartz, and calcite. White precipitate occurring on tailings surfaces is composed of gypsum and hydrated magnesium sulfates. Pyrite is mostly unaltered or shows only micron-scale rims of oxidation (goethite/hematite) in some surface samples. This iron oxide rim on pyrite is the only indication of weathering-derived minerals found by microscopy. There are variations in element concentrations with depth that reflect primary variations through time as the tailings ponds were filled. Cadmium and Zn concentrations increase with depth and Ag and Pb are low for the uppermost core samples, while Cu, Ni, and Co concentrations are generally high for the uppermost core samples. These elemental distributions indicate that little or no leaching has taken place since emplacement of the tailings because no accumulation or enrichment of these metals is observed in Hanover tailings, even in reducing portions of tailings piles. Element concentrations of surface samples surrounding the tailings reflect underlying mineralized zones rather than tailings-derived soil contamination. We observed no successive decreasing metal concentrations in prevalent wind directions away from the tailings. Stream sediment samples from Hanover Creek have somewhat elevated Zn, Cd, and Pb concentrations in areas that receive sediments from erosion of the tailings. However, input from tributaries downstream of the ponds appears to be principal source of heavy metals in Hanover Creek. The results of this study indicate that there is low risk for groundwater heavy-metal contamination from Hanover tailings. Tailings material do not show significant geochemical oxidation/alteration or metal leaching with depth. Our studies indicate that neutralizing minerals present in the tailings are sufficient to keep the tailings material chemically stable. Geochemically, however, tailings materials are being eroded and may pose a threat to Hanover Creek via siltation.  相似文献   

利用铀矿床进行天然类似物研究     

楼凤升 《铀矿地质》1995,11(2):83-87

天然类似物研究是国际上新兴起的一门边缘科学。本文结合我国实际情况，综述研究的意义以及我国开展这项研究的有利条件、课题优选和具体开发内容。  相似文献