多维电极体系处理模拟染料废水的实验研究

以自制多维电极体系对模拟染料废水CODcr及色度去除进行研究,同时考察反应器电压、电解时间、主电极极间距、电流密度等因素对去除效果的影响。试验结果表明,在最佳反应条件下,印染废水经电解后,脱色率达90％以上,CODcr去除率达81％以上,为难降解染料废水的处理提供了一种新方法。     

两类微生物燃料电池治理硝酸盐废水的实验研究

采用二氧化铅阴极单室微生物燃料电池(MFC)和双室MFC,以葡萄糖为唯一电子供体,系统研究了两类微生物燃料电池的产电性能和去除硝酸盐的情况.结果表明,双室MFC闭合后,阳极室降解葡萄糖产生的电子可通过外电路传递到阴极,在生物的作用下,NO3--N得到电子被还原,平均反硝化速率达3.77 mg·L-1·d-1.双室MFC...     

Advances in the treatment of multi-pollutant flue gas in China's building materials industry

In most of the world's building material industries, the control of flue gas pollutants mainly focuses on a single pollutant. However, given the large capacity and high contribution of China's building materials industry to global air pollution, the need to develop multi-pollutant emission reduction technology is urgent. Recently, China has focused on reducing the emissions of flue gas pollutants in the building materials industry, established many key research and development projects, and gradually implemented more stringent pollutant emission limits. This project focuses on the most recent advances in flue gas emission control technology in China's building materials industry, including denitration, dust removal, desulfurization, synergistic multi-pollutant emission reduction, and the construction of pilot research and demonstration projects for pollutant removal in several building material industries. On this basis, revised pollutant limits in flue gas emitted in China's building material industry are proposed.     

From land cover change to land function dynamics: a major challenge to improve land characterization

Land cover change has always had a central role in land change science. This central role is largely the result of the possibilities to map and characterize land cover based on observations and remote sensing. This paper argues that more attention should be given to land use and land functions and linkages between these. Consideration of land functions that provide a wide range of goods and services makes more integrated assessments of land change possible. The increasing attention to multifunctional land use is another incentive to develop methods to assess changes in land functions. A number of methods to quantify and map the spatial extent of land use and land functions are discussed and the implications for modeling are identified based on recent model approaches in land change science. The mixed use of land cover, land use and land function in maps and models leads to inconsistencies in land change assessments. Explicit attention to the non-linear relations between land cover, land use and land function is essential to consistently address land change. New methods to map and quantify land function dynamics will enhance our ability to understand and model land system change and adequately inform policies and planning.     

2000年环保战略目标定量考核方法研究

参加国家环保局科技3项费用课题《2000年环境保护战略目标定量考核指标研究》的8个地区对于2000年环保战略目标提出了不同的考核方法.本文在深入分析各种考核方法的基础上,通过归纳总结,向读者推荐几种基本方法,它们是 TOPS(?)S 方法、简单加性加权法和公式计分法.这些方法是一些基本的数学手段,通过对各具体考核指标的适当综合,归纳出表征总体目标实现程度的数值.即:这些方法是整体考核方法,从整体上说明存在问题和差距,为决策者提供实现环保战略目标的科学依据.     

Analytical philosophy and planning theory

This article examines the potential contribution of analytical philosophy to planning theory. In contrast to some recent discussions it takes as its starting point town planning as actually practised, and recognises the ideological framework within which, for the most part, twentieth century analytical philosophy has been conducted. It concludes that knowledge of philosophy may be of some limited use to the planning theorist.     

湖泊水质富营养化评价的模糊神经网络方法

为了探索人工神经网络用于湖泊营养化评价的可能性,提出了基于多准则学习的模糊神经网络湖泊水质营养化评价模型。该模型应用于我国五大主要湖泊水质营养化的评价结果表明,模糊神经网络用于湖泊水质营养化评价,具有简便、实用、客观性和广泛的通用性。      

多波长K系数方程法同时测定水样中的Cu~(2+)、Co~(2+)、Cd~(2+)

多波长Ｋ系数方程法同时测定水样中Ｃｕ２＋、Ｃｏ２＋、Ｃｄ２＋,即选定三个测定波长,分别将三组分在两个波长处的吸光度转换为另一波长处的吸光度,即可列出一个多元一次方程组,进而解出此波长处各组分的吸光度,求得各组分的含量。对水样中的Ｃｕ２＋、Ｃｏ２＋、Ｃｄ２＋三组分同时测定,结果令人满意。     

Benefits of Collaborative Learning for Environmental Management: Applying the Integrated Systems for Knowledge Management Approach to Support Animal Pest Control

Resource management issues continually change over time in response to coevolving social, economic, and ecological systems. Under these conditions adaptive management, or “learning by doing,” offers an opportunity for more proactive and collaborative approaches to resolving environmental problems. In turn, this will require the implementation of learning-based extension approaches alongside more traditional linear technology transfer approaches within the area of environmental extension. In this paper the Integrated Systems for Knowledge Management (ISKM) approach is presented to illustrate how such learning-based approaches can be used to help communities develop, apply, and refine technical information within a larger context of shared understanding. To outline how this works in practice, we use a case study involving pest management. Particular attention is paid to the issues that emerge as a result of multiple stakeholder involvement within environmental problem situations. Finally, the potential role of the Internet in supporting and disseminating the experience gained through ongoing adaptive management processes is examined.     

试论城市水环境的建设

本文通过对城市水环境的形成以及加强水环境建设对整个城市建设舒适度的影响和作用的剖析,试着引用了一种国际上较为流行的对河流综合整治的方法,对秦皇岛城市水环境建设提出了一点建议。