Emerging transitions in organic waste infrastructure in Aotearoa New Zealand     

Gradon Diprose  Kelly Dombroski  Emma Sharp  Amanda Yates  Bailey Peryman  Martine Barnes 《New Zealand geographer》2023,79(1):15-26

Aotearoa New Zealand is at a critical juncture in reducing and managing organic waste. Research has highlighted the significant proportion of organic waste sent to landfills and associated adverse effects such as greenhouse gas emissions and loss of valuable organic matter. There is current debate about what practices and infrastructure to invest in to better manage and use organic waste. We highlight the diversity of existing organic waste practices and infrastructures, focusing on Auckland, Wellington and Christchurch. We show how debates about organic waste practices and infrastructure connect across three themes: waste subjectivities, collective action in place and language.  相似文献   

立式废热回收装置在海上平台上的选型设计浅析     

王美波 《海洋地质译丛》2014,(1):103-106

来自透平的尾气含有大量的热量,通过余热回收装置,可以将导热油加热,尾气温度降低,进而将导热油作为热源供给换热器等热用户.通过对机组可有效利用的余热功率进行估算,结合平台空间布置,对废热回收装置进行选型分析,并对整个排气系统进行背压校核,合理规划烟管布置,实现了对海洋平台透平发电机组废气余热的回收与利用.  相似文献   

Seismic isolation using granulated tire–soil mixtures for less‐developed regions: experimental validation     

Wei Xiong  Yaozhuang Li 《地震工程与结构动力学》2013,42(14):2187-2193

In this study, shaking‐table experiments were conducted with a novel seismic isolation system (Geotechnical Seismic Isolation, GSI) to validate its dynamic performance during earthquakes. This isolation technique uses shredded rubber–soil mixtures to reduce the structural response to earthquakes, and thus may not only provide economical structural safety for buildings in less‐developed regions, but could also consume a large amount of waste tires worldwide. The present experimental results show that the GSI system has potential to significantly mitigate seismic hazards. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献   

Study on the residence time of deep groundwater for high-level radioactive waste geological disposal          下载免费PDF全文

ZHOU Zhi-chao  WANG Ju  SU Rui  GUO Yong-hai  LI Jie-biao  JI Rui-li  ZHANG Ming  DONG Jian-nan 《地下水科学与工程》2016,4(1):52-59

Residence time of deep groundwater is one of the most important parameters in safety and performance assessment for high-level radioactive waste geological disposal. In this study, we collected the deep groundwater samples of Jijicao in Gansu Beishan pre-selected region. The deep groundwater residence time at two depths estimated by Helium-4 accumulation method were 3.8 ka and 5.0 ka respectively upon measurement and calculation, which indicates that the deep groundwater is not derived from the deep crust circulation process. Hence, deep groundwater is featured with long residence time as well as slow circulation and update rate, and such features are conductive to the safe disposal of high-level radioactive waste.  相似文献   

Distribution characteristics of tritium in the soil in Beishan area of Gansu Province          下载免费PDF全文

LI Jie-biao  SU Rui  YANG Jing-zhi  ZHOU Zhi-chao  JI Rui-li  ZHANG Ming  GAO Yu-feng 《地下水科学与工程》2016,4(2):131-140

Beishan region in Gansu was the preselected area for China’s high-level radioactive waste (HLW) repository. In selecting and evaluating a new dump site, the tritium study is of great significance. The Xinchang-Xiangyangshan preselected area in the Beishan area was taken as an example. This paper selects typical unit and tries to use the distribution characteristics of tritium in the soil to study the atmospheric precipitation infiltration recharge in this area. The results show: In this region, the spatial variability of the tritium content in surface soil is large; it is feasible to use bound tritium tracer method to study the theory of atmospheric precipitation infiltration recharge; the atmospheric precipitation infiltration has close relationship with the soil particle composition, salt content, mineral composition, water content and organic matter content. These results can provide important basis for developing the atmospheric precipitation infiltration recharge, groundwater numerical simulation, nuclide migration study and so on.  相似文献   

基于开源PostgreSQL & SharpMap的高放废物地质处置遥感信息管理系统的设计与开发     

王洪斌  黄树桃  王鹏  罗鹏程 《铀矿地质》2016,(2):123-127

基于开源PostgreSQL空间数据库和SharpMap控件,设计开发了高放废物地质处置遥感信息管理系统,实现了遥感影像的打开、另存、裁剪、空间查询、可视化漫游及数据记录的增、删、改、查等多种功能,对高放废物地质处置及信息化建设具有重要的现实意义。  相似文献   

古地下水测年法在高放废物地质处置中的应用     

周志超  云龙  王驹 《铀矿地质》2014,(1):57-64

文章论述了古地下水测年法的原理、适用范围及其在高放废物地质处置中的应用,分析对比了各种测年方法的优缺点,旨在为高放废物地质处置库选址中的水文地质研究提供参考。  相似文献   

某核废物处置预选区中核素迁移模拟研究     

李寻  ;杨泽平  ;李金轩  ;张卫民  ;李小燕 《华东地质学院学报》2014,(3):321-327

核素在裂隙介质中的迁移问题是核废物深地质处置中极为关注的问题。为了解裂隙介质中核素的迁移规律,建立了基于双重介质理论的描述核素在裂隙域和基质域中迁移的基本微分方程,利用拉普拉斯变换推导出其解析解;在对西北某核废物处置场预选区地水文地质条件分析的基础上,获取相关参数,利用一维多途径核素迁移模型,选取国内在花岗岩中研究较多的核素Cs-134、Co-57、Tc-99,模拟这几种核素的相对浓度随模拟时间、迁移距离的变化规律。模拟结果表明：在其他条件都相同的情况下,Cs-134的迁移是最快的,而Tc-99迁移是最慢的。  相似文献   

非饱和膨润土的有效热传导特性模型     

周嵩  陈益峰  张勤 《岩土力学》2014,35(4):1041-1048

膨润土缓冲材料热传导特性的研究,对于高放废物深地质处置系统的安全评价至关重要。基于串、并联原理,通过将土体孔隙划分为与固相基质并联和串联两部分,提出了考虑矿物成分、颗粒亲水性、孔隙率及饱和度等因素的非饱和膨润土有效热传导系数的4种预测形式,建立了基于4种形式线性组合的有效热传导特性预测模型。详细讨论了模型参数的确定方法,并讨论了孔隙率、饱和度和孔隙结构、颗粒亲水性等因素对土体有效热传导特性的影响。基于MX-80膨润土和高庙子膨润土热传导特性试验成果,对模型的预测性能进行了验证。结果表明,由于膨润土颗粒尺寸较小且具有亲水特性,孔隙内的空气与水宜采用并联描述。研究成果对于非饱和膨润土的导热性能以及工程屏障系统的THM耦合数值模拟研究具有一定的参考价值。  相似文献   

Extraction of High Purity Bischofite (MgCl2.6H2O) from Left Over-Resiudal Bittren, Lake Quroun, Egypt     

Elsheikh RAGAB 《《地质学报》英文版》2014,88(Z1):363-365

正1 Introduction The left-over(residual)brines often in industrial facilities is disposed back to the sea or in dump areas e.g.abundant salt mines in other cases.Dumping into the sea  相似文献