SBR工艺特点及SBR脱氮除磷技术

介绍了序批式活性污泥法(Sequencing Batch Reactor,简称SBR)工艺的产生、发展和特点以及目前脱氮除磷研究的主要进展。     

江苏省城镇污水处理市场化中的融资问题研究

城镇污水处理市场化是公共事业民营化的重要组成部分。但由于污水处理投资巨大,资金回收周期长,污水处理者对污水排放者及排放情况的信息掌握比较困难,污水处理市场化需要更加复杂而有效的制度支持。本文强调通过降低进入壁垒、提高污水处理收费标准、增加企业自主权等制度变革,来增加污水处理投资的长期可持续融资能力。     

水污染控制工程课程教学改革探索

水污染控制工程课程是环境工程各专业方向的主干专业课程。本文通过对该课程体系内容和问题的综合分析 ,提出了该课程改革的总体思想与实施措施 ,强化了学生的创新能力培养     

产学研政企结合 构建211大学特色办学新模式

选取贵阳市软科学研究项目《贵阳市循环经济型城市污水资源化—能源化应用研究》科研工作为个案,阐述工作依据、课题来源、工作启动、工作组织及管理、工作协作及深入开展、工作特点、项目成果的社会影响、特色及同行评价,并探讨产学研政企密切合作,加快构筑211大学特色办学新模式的方法和途径。     

化学药剂在引气浮选中的作用

在引气浮选中，影响除油效率的因素主要是油粒直径、气泡直径和油粒表面的化学性质。加入表面活性剂、聚合物及无机物凝聚剂，可以降低气泡直径、增大油粒直径、降低油粒表面的电位，从而提高除油效率。     

海南城市污泥用于桉树种植

种植桉树后,土壤肥力下降,而城市污泥能提供桉树生长的营养物质。污泥用于桉树种植既能解决城市污泥的出路,又能给土地提供肥力,是可持续发展的模式之一。     

Ways out of the sewage sludge dilemma: Connecting administrative and participatory decision making

This paper examines the problem of decisions about the disposal of sewage sludge, in the face of stakeholder groups with varying viewpoints, based on a current case from the state of Lower Saxony in Germany. Like other developed countries, Germany faces the dilemma that sludge arisings are increasing (e.g., because of better water treatment) while disposal options are becoming more scarce. Lower Saxony relies heavily on landfill and agricultural application, but landfill of untreated sludge will be banned after 2005. The state Environment Ministry sees agricultural application as having various advantages, but it faces scepticism from various stakeholders. The ministry has therefore taken steps to encourage a long-term dialogue process with the main stakeholders, including farming organizations, food processors, other landowners such as the churches, and environmental and consumer organizations. The process began with a discussion forum in 1995 that led to the proposal of specific discussions with stakeholders. This paper focuses in particular on the dialogue with environmental and consumer groups. It analyzes the initial positions of the various stakeholders, describes the concrete steps taken so far, describes the ongoing efforts, and critically evaluates the procedures used as well as their implications in terms of the ideas of deliberation and analysis.     

基于家庭情感联系因素分析大学生犯罪的原因

在代表着祖国未来的大学生群体中的一部分,却因触犯法律而成为阶下囚甚至死刑犯,这是一个十分值得关注的不正常社会现象。是什么原因导致大学生走上了犯罪道路?根据实证资料,把"社会腱"理论作为分析的理论基础,从大学生与家庭情感联系因素的视角,具体分析了大学生犯罪的发生原因。     

污水处理中污泥的处置与利用

介绍和分析了我国污泥产生和处置利用的现状 ,比较了国内外采用的方法 ,并根据我国国情提出了污泥资源化、能源化的处置和利用途径的建议。     

Exposure Assessment of Heavy Metals Resulting from Farmland Application of Wastewater Sludge in Tianjin, China: The Examination of Two Existing National Standards for Soil and Farmland-Used Sludge

Land application is one of the major methods of managing municipal sludge in China. The sludge is used for fertilizing and conditioning soil, but due to the high concentration of heavy metals and other chemicals that it contains, improper use of sludge will lead to the contamination of farmland soil. To provide guidance on the application of sludge in China, the Control Standards for Pollutants in Sludge for Agricultural Use (CSPSAU) were enacted, and implemented in 1985. Afterwards, the National Environment Quality Standards for Soil (NEQSS) were also formulated and put into effect in 1996. In this article, these two national standards were examined by means of exposure assessment. The main exposure pathway to humans that was considered was dietary intake of crops grown on the sludge-applied farmland. Five major types of agricultural crops (rice, wheat, tuber roots, vegetables, and fruits) and three groups of exposure population (the urban individual group, the rural sludge-applying individual group, and the rural sludge nonapplying individual group) were assessed. This case study in Tianjin, China, shows the necessity of reexamining the national standards of the CSPSAU and the NEQSS in the context of risk assessment. More comprehensive surveys and monitoring programs assessing heavy metals contained in farmland soils and crop tissues will be necessary for examining the risks to human health.