共查询到20条相似文献,搜索用时 46 毫秒
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本文在对艾维尔沟河(简称:艾河)水进行调查、监测和水团追踪试验的基础上,通过计算分析,进而确定其自净能力和环境容量;在对艾维尔沟煤矿矿区进行调查和分析其近期扩建的基础上,又进而确定了它的现状,并预测其扩建后的污染能力。从而进行平衡:艾河环境容量过小。为使艾河实现其为矿区、采石场及以下地段的生活、生产供水及容纳其所排污染物双重功能的环境目标,则从调节艾河枯水期水量和强化矿区废污水的处理能力入手,进而对矿区各排污口拟订了浓度,乃至总量控制标准。 相似文献
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针对河道等自然流域的水体污染物进行生态治理,作者提出运用三个独立步骤而形成一道自然水体修复功能:第一步,优选良性微生物株群并持续发展与供给;第二步,运用河道功能增加水中的溶解氧;第三步,建立流域水体生物链,从而达到流域水体消纳污染物的自净效果。 相似文献
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随着我国油气田勘探开发力度加大和新环保法的实施,油田开采过程中耗水量大和污水处理问题是我国油气田企业面临的共同难题。从污水余热回收、污水回注、压裂液重复利用、钻井废水再利用四个方面,介绍了国内油田产出水再利用技术研究进展与应用现状,指出目前存在的污水余热再利用应用范围不广、回注污水利用不合理、化工原料未回收利用等主要问题。并通过文献调研,展望了油田污水再利用技术的发展方向,指出需从污染源头防控入手,研发更加经济环保的液体配方,并深入研究从污水中取热、取水及取化工原料的循环再利用技术,因地制宜制定相应的水质及污水配伍性实验评价标准,实现从源头至末端治理相结合的油田污水清洁生产。 相似文献
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一、重视城市污水处理厂建设,认清投资主体是政府自身水污染主要由工业废水和生活污水两大部分组成,工业废水可以通过实施清洁生产来大幅度的减少。但生活污水随着生活水平的提高,用水量将很快增加,因而生活污水的污染负荷将逐渐成为水污染的主要成分,尤其在经济高度... 相似文献
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梯级开发河流的富营养化探讨 总被引:1,自引:0,他引:1
梯级开发是充分利用河川径流、进行河水稀释自净能力的时间调节和合理利用水能的重要方式之一。梯级开发在我国许多河流上均可实施,如四川的釜溪河、綦江等,但在河流梯级开发后可能发生富营养化。本文将以釜溪河富营养化研究为例来探讨这一问题。 相似文献
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张晓燕 《国外农业环境保护》2012,(5):50-53
白银是国家重要的有色金属工业生产基地,由于水资源缺乏,城郊农民长期截流东大沟含有重金属的工业污水灌溉,导致白银市郊区土壤重金属污染较为严重。本文通过对白银市污水灌溉区与沿黄灌区农田土壤进行调查测定,分析了白银市土壤重金属污染的现状特征,以此为依据,探讨运用科学污水灌溉,达到重金属污染危害最小化的目标。 相似文献
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搞好大学生思想政治工作对促进学校的建设工作意义重大.针对当前我院迎评促建工作中的学生思想上存在的误区,应进一步加强宣传、加强思想政治工作队伍建设以及不断总结过去和创新现在,根据当前迎评促建工作的实际,采取一定措施. 相似文献
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我国经济处于高速增长期,建设日新月异,中小城市的光污染问题日趋明显,防治显得十分重要。文章以中山市城区为例,对道路照明、建筑照明、广告照明、绿化照明,以及玻璃幕墙反射等光污染情况进行了调研和评价。根据中山市城区的光污染情况,从制定和完善光污染防治法规体系、加强规划和宏观管理、提高公众参与力度和监督力度、加大人才培养和政策扶持力度、加大清洁生产推广力度以及实施照明设计单位资质认证等多方面提出了对光污染的防治对策。 相似文献
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Gerald Clark 《Natural resources forum》1991,15(4):276-281
During the past 25 years the bauxite and alumina industry has grown threefold creating major change in the industry structure and reducing the dominance of the majors. Australia has emerged as the leading producer with a major third party alumina market developed principally by Alcoa of Australia. Future growth while, less dramatic, is likely to be substantial requiring US$50 billion to fund new projects which will be concentrated in developing countries with large bauxite reserves and developed infrastructure. 相似文献
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ABSTRACTSmart and eco-cities have become important notions for thinking about urban futures. This article contributes to these ongoing debates about smart and eco-urbanism by focussing on recent urbanisation initiatives in Asia. Our study of India’s Smart Cities Mission launched under the administration of Narendra Modi and China’s All-In-One eco-cities project initiated by Xi Jinpin unfolds in two corresponding narratives. Roy and Ong’s [2011. Worlding Cities: Asian Experiments and the Art of Being Global. Oxford: Wiley-Blackwell] “worlding cities” serves as the theoretical backdrop of our analysis. Based on a careful review of a diverse set of academic literature, policy and other sources we identify five process-dimensions for analysing the respective urban approaches. We show how the specific features of China’s and India’s urban focus, organisation, implementation, governance and embedding manifest both nations’ approaches to smart and eco-urbanism. We argue that India’s Smart City Mission and China’s All-in-One project are firmly anchored in broader agendas of change that are set out to transform the nation and extend into time. The Indian Smart City Mission is part of a broader ambition to transform the nation enabling her “smart incarnation” in modernity. Smart technologies are seen as the key drivers of change. In China the framework of ecological civilisation continues a 5000-year historical tradition of civilisation excellence. By explicitly linking eco-urbanism to the framework, eco-cities become a means to enact ecological civilisation on the (urban) ground. 相似文献
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城市固体废弃物是人们在工业生产活动、生活活动及商业活动中所产生的固体废物,这种废物随着国民经济的发展、人口的增长、人民生活水平的提高,数量不断增加。它破坏了市容,污染环境,给人民健康带来了极大的危害,因此,需加以处置和处理。本文将系统地介绍现阶段国内外城市固体废弃物的现状及处理技术,并针对我国国情,提出合理化的处理方案。 相似文献
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塔里木河上游及源流区草原荒漠化及其防治研究 总被引:3,自引:0,他引:3
加强生态环境保护和建设是西部大开发的战略重点。针对塔里木河流域环境恶化、草地开发利用失衡、草原荒漠化日趋严重的问题,提出具体规划和综合治理方案。 相似文献
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T. H. Mather 《Natural resources forum》1989,13(1):59-70
The success of river and lake basin development and management is rooted in the knowledge of its resources, both physical and human. Within the framework of an integrated basin plan, each economic sector depends on the adequacy of such data for its individual development. The management and conservation of the basin itself in turn depends on knowing the requirements of those sectors and their probable impact on each other and on the status of the basin's resources, its ecology and environment. The development of African river basin resources is subject to various constraints, some for physical and climatic reasons, others tied to socio-cultural characteristics and the priorities of national economies. These are reflected in financial, manpower and institutional limitations, problems of finding technologies suited to specific local conditions and concern for human health. The scale and complexity of river basin development make it difficult to predict precise outcomes of planned proposals, but a progressive approach which links long-term activities with achievable, shorter term production projects offers prospects for ultimate success. 相似文献