共查询到20条相似文献,搜索用时 109 毫秒
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水电站工程属于生态影响类项目,施工过程产生水、大气、噪声、弃渣及垃圾污染等环境问题,会对项目所在地的生态环境带来负面影响,也会造成新的水土流失,因此加强施工期环境保护监督工作势在必行,监督环保投资的落实,是做好环境保护工作的前提。文章以积石峡水电站建设为例对此进行了初步探讨。 相似文献
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文章结合西久公路拉脊山隧道,就山区特长隧道的选址、弃碴、涌水及附属工程对环境的影响、隧道弃碴的处理和水土流失的防治等方面提出了特长隧道施工所带来的环保问题,重点论述了弃碴对环境的影响,并提出了相应的处理措施。 相似文献
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《四川环境》2017,(2)
结合国家河流治理、管理近中期的实际需求及国家水污染防治行动计划,对清洁河流概念提出的必要性进行阐述,分析了清洁河流的特征,初步提出清洁河流的内涵和定义。研究结果表明:清洁河流内涵是河流所涵盖的流域工业、生活、面源等污染源得到有效控制,做到有效达标排放,水质目标管理基本实现,水体清澈,河流水质基本满足人类对其功能包括景观功能、生境维持功能、自净功能等要求,河道保持通畅并具有一定的流速、河道生态流量尤其是枯水期生态需水量可以满足,河岸景观美感度较高,本土典型水生生物生存良好。清洁河流定义指流域污染源有效控制、水体清澈、水质基本满足人类对其功能要求、河道通畅、本土典型水生生物生存良好的河流。清洁河流内涵和定义的提出为下步围绕清洁河流开展的相关理论和应用研究提供了必要的基础。 相似文献
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利用先进的遥感技术对荒地资源进行调查,可以直接、准确地圈定荒地的范围;确定荒地的土壤性质,这一手段不仅精度高,而且省时省力。另外,本文根据遥感解译,还提出了荒地资源开发利用的构想,并针对性地提出了相应的生产模式。 相似文献
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长输管道建设具有点多、线长、面广的特点,管道沿线会经过各类环境敏感区域,优化管道的线路工程设计可以达到良好的环境保护效果。文章分别从生态、地表水、地下水、大气、噪声、固体废物及环境风险等方面出发,探讨线路工程设计中的环境保护问题,提出相关的保护和防范措施,以达到管道建设和环境保护的和谐发展。 相似文献
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Benedito Braga Paulo S. F. Barbosa 《Journal of the American Water Resources Association》2001,37(4):837-852
ABSTRACT: A network flow algorithm has been developed for the optimization of real‐time operation of a multiple reservoir system. Two purposes have been considered in the operation: flood control and hydropower generation. A special network structure was developed which allows the consideration of river routing. A multiobjective formulation is utilized thus allowing generation of a non‐dominated curve. The effect of imperfect forecast on the performance of the real‐time operation model is also evaluated. An application is made to a subsystem of the Brazilian hydroelectric system, located in the Paranapanema river basin. In this case study, the model showed good performance under the largest flood of the historical records. 相似文献
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William R. McMinn Qinli Yang Miklas Scholz 《Journal of environmental management》2010,91(9):1855-1863
Severe rainfall events have become increasingly common in Europe. Flood defence engineering works are highly capital intensive and can be limited by land availability, leaving land and communities exposed to repeated flooding. Any adaptive drainage structure must have engineered inlets and outlets that control the water level and the rate of release. In Scotland, there are a relatively high number of drinking water reservoirs (operated by Scottish Water), which fall within this defined category and could contribute to flood management control. Reducing the rate of runoff from the upper reaches of a catchment will reduce the volume and peak flows of flood events downstream, thus allowing flood defences to be reduced in size, decreasing the corresponding capital costs. A database of retention basins with flood control potential has been developed for Scotland. The research shows that the majority of small and former drinking water reservoirs are kept full and their spillways are continuously in operation. Utilising some of the available capacity to contribute to flood control could reduce the costs of complying with the EU Flood Directive. Furthermore, the application of a previously developed classification model for Baden in Germany for the Scottish data set showed a lower diversity for basins in Scotland due to less developed infrastructure. The principle value of this approach is a clear and unambiguous categorisation, based on standard variables, which can help to promote communication and understanding between stakeholders. 相似文献
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James K. Boyce 《Environmental management》1990,14(4):419-428
A major flood control initiative has been launched in Bangladesh under the coordination of the World Bank. The bank's five-year
Action Plan is intended to initiate a long-term investment program, the specifics of which remain to be determined. Long-term
proposals under consideration include the construction of massive embankments along the great rivers of the Bangladesh delta.
The wisdom of such a “structural solution” to Bangladesh's flood problems can be questioned on economic, environmental, and
technical grounds. Regrettably, the decision-making process has not encouraged wide debate on these questions. 相似文献
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在燃煤锅炉运行期间,锅炉定期排污、水质处理罐反冲洗再生、除尘等工序产生大量污水。文章通过对污水处理系统工艺的改造,将燃煤锅炉的排污水回收后用于冷却炉渣,炉渣最终用来烧砖,而湿炉渣水分带走的少量污染物最终被固化在砖或砌块中,不会对周边水质或土壤造成污染,实现了节能减排,收到了较好的环境效益、经济效益和社会效益。 相似文献
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含油污水中固体废物固化与燃煤混烧的可行性 总被引:3,自引:0,他引:3
在含油污水处理过程中易产生含油污泥、活性污泥及浮渣等固体废物,利用传统的焚烧法、分离法、填埋法、生物降解法处理这些废物具有一定的缺陷和局限性。为了利用这些废物中的油及有机质的潜在能量,大庆炼化公司对固体废物进行了脱水固化试验。结果表明,脱水后的废物可以达到较好的固化状态,并具有一定的热值。固化废物经粉碎处理后,可按一定比例与燃煤混烧。在正常生产状况下,热电厂可保证混合燃烧的效果,其总体热值不会降低。混烧后的灰渣和炉渣可作为水泥厂的原料。该方法有利于环境保护,但其工业化生产可行性有待于进一步证实。 相似文献