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《环境教育》2012,(8):56-56
本刊通讯员徐波陈洁张媛报道江苏省句容市日前出台了《关于下达"河长制"实施意见及明确市骨干河道河长的通知》,明确了境内13条列入省骨干河道、跨市河道所在镇(管委会)的一把手出任"河长",非骨干河道、跨市河道由所在各镇(管委会)负责人出任"河长"。涉及两镇以上的"河长制"事项,由句容市人民政府召集所在镇(管委会)人民政府协商确定。通知指出,按照"尊重规律、科学规划、标本兼治、治管结合"的原则,建立和完善河道"河长制",按照分级管理的原则,落实责任,组织河道整治,加强监督考核,着力恢复和提高河道综合功能,畅通河网水系,维护水生态环境,促进经济社会与水资源环 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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自治区环境监测中心站的成立始于1976年。几年来在上级领导的大力支持和热情关怀下,全站人员克服了人员少、仪器设备不足、科技骨干缺乏等困难,同乌鲁木齐市监测站一起开展了乌市地区的环境质量监测和污染源调查等工作,为弄清乌市和全区的环境质量积累了大量资料。进入1981年以来,自治区环保局进一步加强 相似文献
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城市河流治理技术研究进展 总被引:1,自引:0,他引:1
城市河流水体具有生态系统复杂、污染类型齐全、污染源数量多、危害极为严重的特点。本文结合国内外最新研究成果和积累的宝贵经验,介绍了河道曝气技术、生态混凝土技术、阿科蔓复合生态技术、接触氧化技术、生态疏浚、化学强化一级处理、光催化技术等比较先进技术的研究进展,并对今后保护城市河流提出了建议。 相似文献
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Mapping hazard from urban non-point pollution: a screening model to support sustainable urban drainage planning 总被引:2,自引:0,他引:2
Mitchell G 《Journal of environmental management》2005,74(1):1-9
Non-point sources of pollution are difficult to identify and control, and are one of the main reasons that urban rivers fail to reach the water quality objectives set for them. Whilst sustainable drainage systems (SuDS) are available to help combat this diffuse pollution, they are mostly installed in areas of new urban development. However, SuDS must also be installed in existing built areas if diffuse loadings are to be reduced. Advice on where best to locate SuDS within existing built areas is limited, hence a semi-distributed stochastic GIS-model was developed to map small-area basin-wide loadings of 18 key stormwater pollutants. Load maps are combined with information on surface water quality objectives to permit mapping of diffuse pollution hazard to beneficial uses of receiving waters. The model thus aids SuDS planning and strategic management of urban diffuse pollution. The identification of diffuse emission 'hot spots' within a water quality objectives framework is consistent with the 'combined' (risk assessment) approach to pollution control advocated by the EU Water Framework Directive. 相似文献
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选用2012年为现状年,运用Surfer软件对白洋淀主要污染物浓度的现状分布、富营养化程度分布及其趋势面进行可视化分析。结果表明:白洋淀大部分淀区的营养盐污染、有机污染以及富营养化程度都相当严重,污染程度由西向东逐渐减轻,其中入淀控制监测断面的污染最严重;白洋淀的污染主要由入淀河流排污产生的点源污染所致,应对白洋淀入淀河流污染进行严格治理;利用Surfer软件制图结果表述简单直观,为白洋淀水质污染状况的表征和评价提供了一种新的尝试。 相似文献
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Pankaj Kumar Vandana Mishra Saiyami Bhardwaj Shafali Garg Ludovic F. Dumée Radhey Shyam Sharma 《环境质量管理》2023,32(4):9-17
Sectorial approach for monitoring heavy metal pollution in rivers has failed to report realistic pollution status and associated ecological and human health risks. The increasing spread of heavy metals from different sources and emerging risks to human and environmental health call for reexamining heavy metal pollution monitoring frameworks. Also, the sources, spread, and load of heavy metals in the environment have changed significantly over time, requiring consequent modification in the monitoring frameworks. Therefore, studies on heavy metal monitoring in rivers conducted in the last decade were evaluated for experimental designs, research frameworks, and data presentations. Most studies (∼99%) (i) lacked inclusiveness of all environmental compartments; (ii) focused on “one pollutant – one/two compartment” or sometimes “one pollutant – one compartment – one effect” approach; and (iii) remained “data-rich but information poor.” An ecological approach with integrative system thinking is proposed to develop a holistic approach for monitoring river pollution. It is visualized that heavy metal monitoring, risk analyses, and water management must incorporate tracking pollutants in different environmental compartments of a river (water, sediment, and floodplain/bank soil) and consider correlating it with riverbank land use. The systems-based pollution monitoring and assessment studies will reveal the critical factors that drive heavy metals pollutant movement in ecosystems and associated potential risks to the environment, wildlife, and humans. Also, water quality and pollution indexing tools would help better communicate complex pollution data and associated risks among all stakeholders. Therefore, integrating systems approaches in scientific- and policy-based tools would help sustainably manage the health of rivers, wildlife, and humans. 相似文献
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大连石化公司运用标准化法对该厂污染源进行了普查,进而对污染源做出了评价。以二蒸馏装置为例,对总排放口污染源的监测数据进行了标化处理,确定了主要的污染因子及污染源:石油类主要来自减压塔顶分离器;硫化物主要来自减压塔顶油、水分离器和常压塔顶油、水分离器;挥发酚主要来自减压塔顶油、水分离器。 相似文献
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阐述了农业面源污染的主要来源及危害,指出农业面源污染是当前农业可持续发展的主要障碍之一。由于我国农村过量和不合理地使用农药、化肥、地膜等,造成了农业面源不同程度的污染,给农业生产和农民生活带来了隐患,直接关系到农业可持续发展,应该采取有效措施加以解决。 相似文献
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Amidst the hue and cry about anthropogenic sources of pollution, there are regions in the world facing silent metal discharges purely due to geochemical factors. The present investigation relates to such a situation and deals with the non-anthropogenic discharge of cadmium into the local environment. The phosphorite rocks of the Roorkee area of India contain cadmium and, particularly as these are used in the manufacture of superphosphate, the rocks could lead to the large-scale disbursement of cadmium into the open environment. The area under study has soil rich in cadmium-containing minerals, as a result of which water is likely to leach out mobile cadmium and the ground water and crops could become contaminated. This is evident from the high values of cadmium in the tap water and food samples in the area. The Ganga and the Yamuna, the two major rivers traversing the area that originate in the central crystalline rocks of the Himalayas, show high cadmium values at Rishikesh and Dakpathar. Moreover, the sediments of these rivers have cadmium in easily bioavailable form. Food samples and milk analysed from the area show, in some cases, cadmium levels above the safety limits. This high exposure to cadmium is probably causing ailments so far unreported. 相似文献