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徐新宇 《国外农业环境保护》2010,(6):93-95
分别对太湖地区水体污染的三大来源工业污染、城乡生活废水、农业面源污染等问题进行了系统分析,研究各类污染的现状和所采取的措施,找到当前影响太湖地区污染的主要因素,从而为解决太湖水体污染问题提供有益建议。 相似文献
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以水污染灾害为研究对象,从水污染驱动力、污染状态、人类响应3个方面构建水污染灾害综合防治能力评价指标体系,运用物元可拓评价模型,使用熵权法确定权重,计算出环太湖地区的综合关联度并进行分析,结果表明:2014~2018年环太湖地区水污染灾害综合防治能力总体上在不断提升,综合防治能力最好的为无锡,其次为常州、苏州和湖州,嘉兴最差,但湖州综合防治能力有下降的趋势,水污染灾害风险加大;环太湖地区都存在人口密度高、水产养殖规模大和酸雨发生率高等问题,水污染灾害防治压力重;在社会环境宜居、经济发达和控源治污的基础上,通过增加相关项目资金的投入、强化监管和预警能力,才能从本质上提升水污染灾害综合防治能力。 相似文献
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《中国环境管理干部学院学报》2016,(3)
大连市酸雨的来源受外来地区输送的影响较大,利用CMAQ模型对大连市酸性物质的沉降进行定量模拟分析。结果表明,大连市本地源排放对空气质量的影响较大,但对酸性物质的沉降影响较小,对硫和氮的湿沉降的贡献仅在10%~20%之间。外来源中,山东污染物排放对大连市湿沉降的贡献占30%~40%,而辽宁其他区域的贡献仅10%左右。另外,在雨季5~8月,日本、朝鲜和韩国等境外污染物排放对大连市和周边地区湿沉降的贡献也不容忽视。 相似文献
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我国酸雨污染及其控制规划构想 总被引:12,自引:0,他引:12
针对我国酸雨污染比较严重的情况,从可持续发展角度提出了控制我国酸雨污染的各种方法和手段,并根据我国的致酸污染物主要是煤炭燃烧产生的实际情况,从煤炭生命周期入手,提出了包括“无行动方案”、“替代方案”、“清洁生产工艺”等控制措施。 相似文献
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四川酸雨的综合防治对策研究 总被引:2,自引:0,他引:2
本文在四川酸雨来源、成因、危害的基础上,结合国内外酸雨防治的经验,确定了四川酸雨的主要控制因子、控制目标和致酸污染物的削减率。针对四川的特点,提出了控制四川酸雨的战略和工程措施,为四川的经济发展、城市建设与环境保护等的规划、决策提供了科学依据。 相似文献
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鹰潭市酸雨污染现状、趋势与成因分析 总被引:1,自引:0,他引:1
吴送先 《中国环境管理干部学院学报》2011,21(4):59-61,73
采用2001-2010年降水监测数据,全面系统地研究分析鹰潭市酸雨污染现状、变化规律,并从环境空气质量、区域污染物输送、气象因素和土壤性质等方面探讨酸雨形成的主要原因,得出区域输送是鹰潭市酸雨污染的主要因素。 相似文献
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基于正定矩阵因子分解(Positive Matrix Factorization,PMF)模型对石马河河口及滨岸带中多环芳烃(Polycyclic aromatic hydrocarbons,PAHs)污染来源及贡献率进行解析,分别于2021年4月(平水期)和7月(丰水期)采集地表水及表层沉积物水样进行研究分析。结果表明:该研究区内PAHs污染的来源主要包括原油泄漏、煤炭燃烧、交通运输及生物质燃烧等,其中,交通运输源对研究区沉积物中PAHs的贡献率超过60%;交通运输及煤炭燃烧源对地表水中PAHs的贡献率之和接近80%;原油泄漏与交通运输源对研究区悬浮颗粒中PAHs的贡献率之和接近70%。研究结果可为石马河地区水资源绿色开发与PAHs污染治理提供一定依据。 相似文献
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城镇化是推动我国经济社会发展的重要动力,在高速发展的同时,带来大量污染排放,威胁乡村环境质量与可持续发展。在对乡村生态环境问题剖析的基础上,从战略、实施、方式等层面探索解决思路,围绕科学规划、发展方式、基础建设、管理机制、宣传教育等方面分析关键点,加强乡村环境保护,保障城镇化建设健康发展,为促进农村农业持续发展提供持久动力。 相似文献
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Trametes versicolor decolorized 2000 mg L(-1) of the mono-azo substituted naphthalenic dye Amaranth with no dye sorption observed visually. The changes in the toxicity were assessed over a period of 30 d for the dye-treated viable culture, control (no dye added), and a boiled culture treated with dye, using the Microtox Acute Toxicity assay. Before dye addition, the culture filtrate had some toxicity, which increased after the dye addition. The toxicity of the dye-treated culture decreased during the treatment. The loss of toxicity occurred at the same time, with the loss of color suggesting that detoxification is associated with decoloration. The change in pH was due to natural metabolic processes and had a small effect on detoxification. Because the toxicity of the treatment was similar to that of the control at the end of the treatment, the effluent seems to be safe for release into the environment, potentially rendering this treatment suitable for industrial application. 相似文献
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泵站树状给水管网流量具有随机性,而这种随机性变化会直接影响管网的建设费用和动力费用.针对这-特点,应用随机规划原理,建立泵站树状给水管网机会约束模型,编写基于随机模拟的遗传算法程序求解该模型.机会约束模型能较客观地反映该管网的实际工况,使优化设计结果更符合实际. 相似文献
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Günay Kocasoy 《Environmental management》1989,13(4):469-475
The increase in the number of tourists visiting a coast is desired by most of the countries for economic reasons. However, this increase in tourism may cause pollution of the sea. This can be only avoided by proper planning and by predicting the carrying capacity of the coast in terms of sea pollution. This is especially important for developing countries where part of the wastewater is discharged without any treatment into the sea.In the present study the beaches were classified according to their use — and consequently the amount of waste discharged into the sea — into four groups: (1) coasts that are used only for swimming and recreational purposes; (2) coasts used simultaneously for dwelling, swimming, and recreational purposes; (3) coasts along which only dwellings exist; and (4) natural and man-made harbors, i.e., coasts used as shelters. During the survey,40,320 observations were made between December 1985 and February 1988 to determine the effect of the number of tourists on seawater quality. The results obtained were analyzed by a multilinear regression program to obtain an empirical equation giving the extent of the sea pollution in terms of coliform concentration as a function of population density and some other environmental factors.The equations derived in this study enable the determination of the carrying capacity of a beach in terms of pollution as well as the expected degree of pollution corresponding to a given population density. Furthermore, it allows the prediction of the extra carrying capacity that can be obtained by improving the waste-disposal conditions. 相似文献
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阐释了信息产业专门化街区的内涵,结合对合肥市黄山路信息产业专门化街区构成要素的分类及其邻近度的分析,分别从空间结构演化、景观演化、功能演化三方面阐述了合肥市黄山路由"电子一条街"向"信息产业专门化街区"的总体演化阶段,探讨了信息产业专门化街区的未来发展趋势。 相似文献
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