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1.
朱智媛 《四川环境》2009,28(2):48-51
人工湿地处理技术具有投资低、出水水质好、耗能低、抗冲击力强、操作简单和运行费用低等优点。本文阐述了人工湿地系统应用于高校生活污水回收利用的意义,以福建工程学院新校区的北校区为例,利用前期在福州大学模拟人工湿地系统处理生活污水的实验数据,规划设计人工湿地系统,计算确定相关设施的面积和尺寸,并对人工湿地系统进行平面布置,绘制出系统流程的剖面图。  相似文献   

2.
人工湿地是一种非常重要的污水处理系统。文章通过采用人工湿地系统对海东市乐都区污水处理厂尾水进行深度处理,并对其处理效果进行监测,旨在探索人工湿地在青藏高原的利用前景和存在的问题。研究期为2013年7月~2014年5月,研究结果表明:(1)人工湿地对COD、BOD5和溶解氧有显著的处理效果,通过人工湿地系统处理后,COD去除率、BOD5去除率和溶解氧增加率分别为44.19%、68.20%和68.49%,三项指标均可达地表水Ⅳ类水质标准;(2)人工湿地对氨氮、总氮和总磷有显著的处理效果,去除率分别为43.78%、25.52%和33.89%,冬季三项指标的去除率显著下降,通过人工湿地系统处理后,三项指标基本可达污水排放一级A排放标准。本研究表明,人工湿地是在青藏高原污水深度处理中处理效果明显的可行技术方法,具有显著的环境效益和社会效益。  相似文献   

3.
陈述了赣南新农村生活污水的特点、污水处理模式的选择及人工湿地处理技术的研究及应用现状。认为人工湿地用作村镇生活污水的处理系统具有处理效果好、工艺简单、运行管理方便、生态环境效益显著、投资少等特点,很适合赣南新农村的发展要求、环保条件和经济状况。  相似文献   

4.
农村生活污水具有浓度低、成分复杂、生化性高的特点,以豫南某村人工湿地工程为例,介绍人工湿地组合工艺处理农村生活污水,并对污染负荷、湿地床结构、基质材料及植被选择、水力条件等设计参数进行分析。结果表明,人工湿地系统能够有效处理农村生活污水,操作管理简单,在我国农村具有很强的推广意义。  相似文献   

5.
贾滨洋  刘宜 《四川环境》2008,27(1):81-86
人工湿地法处理废水的技术是目前国际污水处理研究领域的热点,该方法利用生态系统中物质循环的原理,使用生物方法去除污染物质.本文对人工湿地处理污水的机理研究现状进行了总结,并讨论了人工湿地处理污水应用的适应性.  相似文献   

6.
结合中国石油吐哈油田公司葡北站的实际情况及对该站生活污水水质进行分析,并对几种常用的污水生化处理工艺进行比较,确定选用三级潜流型人工湿地处理该站生活污水。文章介绍了三级潜流型人工湿地污水处理系统的工艺特点、运行、维护及效果。经分析论证,利用人工湿地处理分散站的小排量生活污水,十分经济且有效,以较低的成本,实现了生活污水的优质处理,产生较好的经济效益和社会效益。  相似文献   

7.
刘西茹 《四川环境》2014,(1):144-149
人工湿地系统具有高效、节能、基建和运行费用低、操作与维护简单等优点,是一种高效的污水生态处理技术,其去除机理错综复杂。本文综述了人工湿地的系统构造、分类和净化机理,并通过其影响因素的分析,提出了人工湿地污水处理系统在设计、建设和运行管理中应注意的问题。  相似文献   

8.
人工湿地技术处理油田含油污水的应用   总被引:1,自引:0,他引:1  
与传统污水处理工艺相比,人工湿地技术具有高效低耗、运行维护简便、对复杂含油污水净化效果良好等特点。文章综述了人工湿地技术处理油田含油污水的净化机理、净化效果、工艺流程及其工艺优势,为含油污水处理技术的研究提供借鉴和参考,对深入认识人工湿地净化机制亦具有一定意义。  相似文献   

9.
利用土地处理系统进行油田生活污水的净化及应用技术,目前在国内尚未推广使用。结合塔里木油田克拉作业区的实际情况,从废水的资源化、生态建设意义和减缓风蚀等角度出发,阐明了人工湿地建设在干旱区的重要作用;从土壤和地下水环境质量及其变化趋势的角度,分析了利用人工湿地处理生活废水的可行性;并对其进行了相应的效益分析。经分析论证,人工湿地可以用于克拉作业区生活污水的深度处理,并在干旱荒漠区进行推广。  相似文献   

10.
人工湿地系统植物床内CODcr动态变化规律探讨   总被引:1,自引:0,他引:1  
人工湿地处理污水系统植物床内各监测点的上、下层COD  相似文献   

11.
吴桐  张博  秦涛  刘军海 《四川环境》2010,29(2):104-108
絮凝沉淀是水处理中的有效方法,天然淀粉经过变性处理可成为优良的絮凝剂,由于其绿色环保、原料来源广和易生物降解等特点,在水处理中得到了广泛应用。本文详细介绍了变性淀粉絮凝剂的种类及应用研究进展,展望了变性淀粉在污水处理领域的发展前景。  相似文献   

12.
不同水力负荷条件下的人工湿地污染处理效果分析   总被引:1,自引:0,他引:1  
本文研究了水力负荷对抚仙湖北岸典型人工湿地净化河道污水处理效率的影响。研究表明,TN、TP及SS去除率随着水力负荷的增加而下降,COD去除率受水力负荷的影响程度相对较小。综合考虑水力负荷对氮磷、有机物及悬浮物等水质净化效果的影响,如果不考虑其它因素,仅从系统处理效果的角度选择水力负荷,人工湿地系统的最佳水力负荷为0.5 m3/m2·d以下。  相似文献   

13.
SBR法废水处理技术分析   总被引:2,自引:2,他引:0  
刘杰  王渝 《四川环境》1998,17(4):13-16
本文介绍了SBR法处理原理及特点,使用该工艺所需设备和监测手段,应用前景。证明了SBR法适应性强,处理效果好,投资动行成本低,是一种经济、实用的污水处理工艺。  相似文献   

14.
上海梦清园生态净化工艺设计与研究   总被引:3,自引:0,他引:3  
梦清园工程采用人工湿地、水生植物塘组合技术,构建了一套复杂的生态系统净化苏州河水,效果明显,同时还取得了良好的经济、社会效益。  相似文献   

15.
A detailed evaluation of past wetland restoration projects in San Francisco Bay was undertaken to determine their present status and degree of success. Many of the projects never reached the level of success purported and others have been plagued by serious problems. On the basis of these findings, it is debatable whether any sites in San Francisco Bay can be described as completed, active, or successful restoration projects at present. In spite of these limited accomplishments, wetland creation and restoration have been adopted in the coastal permit process as mitigation to offset environmental damage or loss of habitat. However, because the technology is still largely experimental, there is no guarantee that man-made wetlands will persist as permanent substitutes for sacrificed natural habitats. Existing permit policies should be reanalyzed to insure that they actually succeed in safeguarding diminishing wetlands resources rather than bartering them away for questionable habitat substitutes. Coastal managers must be more specific about project requirements and goals before approval is granted. Continued research on a regional basis is needed to advance marsh establishment techniques into a proven technology. In the meantime, policies encouraging or allowing quid pro quo exchanges of natural wetlands with man-made replacements should proceed with caution. The technology and management policies used at present are many steps ahead of the needed supporting documentation.  相似文献   

16.
This paper presents an empirical approach to select and prioritize sewerage projects within set budgetary limitations. The methodology includes a model which quantifies benefits of a sewerage project as an index or dimensionless number. The index considers need and urgency of sewerage and other project goals. Benefit is defined as the difference in anticipated impact between the current condition (without the project) and the expected condition with the project. Anticipated benefits primarily include reduction in environmental pollution, reduction of human diseases and morbidity, and other tangible and intangible improvement. This approach is a powerful decision tool for sewerage prioritization and an effective alternative to conventional cost-benefit analysis. Unlike conventional analysis, this approach makes no attempt to convert project benefits and other impacts into a monetary measure. This work recognizes that the decision to provide sewerage based solely on net benefits is not practical. Instead, benefit-cost ratios (B/C) are calculated utilizing cost-effectiveness approach. Using these ratios, 16 unserviced areas of Ensenada, Mexico are ranked. The prioritization rankings produced by this method must be further scrutinized and carefully reviewed for logic, accuracy of input data, and practicality of implementation. A similar framework may also be useful for prioritizing other public works projects.  相似文献   

17.
ABSTRACT: A few years ago, many water quality administrators were convinced that large regional sewerage systems, consisting of one large treatment plant and long trunk sewers extending out to various communities, represented the only efficient and economical means of assuring water quality control. In communities favoring rapid development, the provision of sewer service and encouragement of development of new centers along the trunk sewers offered an additional advantage. More recently quite different points of view are arising in certain areas. In parts of New Jersey strong environmental and community resistance has arisen to proposed central plant-trunk sewer systems. The facilitation of new development along the trunk sewers is viewed as a menace by townships not wanting intensive development of these areas. The diversion of effluent flows to trunk sewers rather than septic tanks would dry up the streams which water quality programs are supposed to protect. Both sides to the controversy have mobilized engineering, environmental, economic, and legal expertise and some critical policy issues have developed. Reconsideration of regional sewerage management and particularly trunk sewer policy is required. The decision as to extent of sewerage service areas involves complex and sensitive planning issues. Because of potential conflicts of interest, such decisions should not be left to staffs of sewerage authorities and their design engineers.  相似文献   

18.
Increasing political effort to improve water quality across the UK and Europe has led to water and sewerage companies investing heavily in high-tech wastewater treatment plants capable of producing high quality effluents. Consequently, amounts of bought-in electricity used for wastewater treatment has and will continue to increase significantly over coming years, while greater provision of enhanced sewage treatment also produces greater volumes of sewage sludge requiring treatment and disposal. Over the same period, tougher controls on the quality of biosolids applied to agricultural land have also been introduced, while there has been an international attempt to reduce the use of fossil-fuel derived power sources because of concerns over global warming. The latter has brought about the introduction of financial instruments, such as the Climate Change Levy, to curb energy use, promote energy efficiency and encourage the development of renewable energy technologies. These factors are set to drive-up the costs of providing adequate sewage treatment services, while at the same time, a tough regulatory line taken to control profits on regional monopolies held by the UK water companies will significantly reduce their revenues over the period 2000-05. The result is that, financially, UK water and sewerage companies face their most challenging period since privatisation in 1989. This paper briefly outlines the current regulations relating to water quality and energy use that will affect water company operations over coming years.  相似文献   

19.
人工湿地污水处理系统工艺设计研究   总被引:15,自引:1,他引:15  
赵桂瑜  杨永兴  杨长明 《四川环境》2005,24(6):24-27,35
本文阐述了人工湿地污水处理系统工艺设计的主要内容及存在的若干问题,提出了开展人工湿地工艺设计研究的一些设想。人工湿地工艺设计研究包括人工湿地基质构建、植物群落构建和人工湿地构造与工程参数三个方面。目前,由于在污染物净化机理、系统水力学和污染物降解动力学等方面认识不足,制约了人工湿地工艺设计水平的提高,因此,深入研究污染物净化机理、开展人工湿地基质与植物筛选与组合研究、创建适合植物生长的人工生境、优化水力学模型和污染物降解动力学模型.将有利于提高人工湿地工艺设计水平。  相似文献   

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