A review of catchment management in the new context of drinking water safety plans

By managing a catchment effectively, the range and amount of contaminants entering waters used for public water supply can be reduced, with resultant benefits for both water companies and consumers. Consequently, catchment management is increasingly being recognised as being at the heart of the water environment. An overview of current and previous catchment management initiatives is given, along with the European Landscape Convention, which could be used as a vehicle for the implementation of a national catchment management strategy. The adoption of the drinking water safety plan approach is strongly advocated by the World Health Organisation, and effective catchment management underpins this approach. Effective management of our catchments will also make a significant contribution to meeting our obligations under the Water Framework Directive, by helping to address the serious issue of diffuse pollution from agriculture.     

The Reliability of Groundwater Sources to Meet Increasing Demands

The groundwater resources of the Lee Valley Water Company have been examined in a joint study with the University of Birmingham. The Company is modifying its operating policy to make maximum use of the groundwater resources, which has involved the development of new methods of estimating the reliable output of the groundwater sources under differing conditions. The technology transfer involved in the project has enabled the Company to gain a greater understanding of the operation of its sources, and the University has modified existing techniques so that they are of greater practical use.     

论现代城市滨水区的景观设计

在当代人们所倡导的可持续性城市发展的宏观背景下,着重探讨现代城市滨水区景观如何合理设计,并且分析城市滨水区成功开发案例加以研究,综合出现代城市滨水区景观设计的一般原则,提出现有阶段城市滨水区设计方向,对当前城市建设具有指导性作用。     

建筑的生态可持续化设计

该文通过“绿色生态住宅”的设计,提出并阐释建筑的生态可持续化设计方法和措施,即在充分利用自然环境资源的基础上,创造健康、与环境共生、舒适的空间环境的原则方法。     

谈"特吉巴奥文化中心"的生态设计

建筑大师R·皮阿诺(意)在特吉巴奥文化中心的设计中,充分挖掘和利用当地的文化传统与自然资源,在被动式通风系统的设计、自然材料的选择、天然光线的利用等方面,通过高科技手段,达到了与自然的生态平衡,给予当今生态设计理念有益的启迪。     

Some chemical properties of hazelnut husk and its suitability for particleboard production

Hazelnut husk is a renewable natural resource that has not industrial utilization yet. The objective of this study was to examine some chemical properties (holocellulose, cellulose, lignin and ash contents, alcohol–benzene, hot and cold water solubility and solubility in dilute alkali (1% NaOH)) of hazelnut husk and to evaluate its suitability to produce composite panels. For this study, particleboards were produced using hazelnut husk as an alternative raw material for the forest products industry. Two panel density levels (0.6 and 0.7 g/cm³) and three types of resins (urea-formaldehyde (UF), phenol formaldehyde (PF), melamine-formaldehyde (MUF)) were selected as treatments. The findings indicated that hazelnut husk waste is a valuable renewable natural resource for particleboard production and could be utilized as a substitute for wood in board production. Its shortcomings, such as higher water absorption and thickness swelling could easily be controlled by adding water repellent chemicals in production. The bending and the internal bond strength properties of the hazelnut husk boards produced met the requirement for the general purpose product standards (TS-EN 312-2) at 0.70 g/cm³ density.     

家用空调的现状与发展趋势

介绍了我国家用空调的现状及其对能源和环境的影响,对集合式居住建筑和独立式居住建筑等不同住宅建筑的空调发展趋势进行了阐述,以寻求能达到节能、舒适、环保三者平衡的家用空调方式。     

秦岭陕西段主要矿产资源分布特征与绿色勘查开发

秦岭陕西段成矿地质条件优越,成矿作用发育,资源潜力巨大,所属的4个矿集区均发现了矿产地,并建成矿山企业。在国家相继出台的契合绿色勘查理念的技术政策推动下,借鉴国外绿色勘查经验,涌现出了一批典型案例；有关单位在小秦岭、凤太、汉中等3个勘查基地分别采取了特色鲜明的绿色勘查方法,取得了较好的绿色勘查效果；同时,从矿业权出让、应建必建、绿色矿山建设实施方案、绿色矿山报评、称号撤销、违约责任追究及处罚等方面践行绿色矿山建设相关政策,陕西省探索出 “黄陵经验”和“凤县模式”。从绿色勘查流程、科技支撑、建设示范区、建立长效激励机制等方面给出了区内主要矿产资源绿色勘查开发建议。     

运城盆地盐湖区地热资源分析

简要阐述了运城盆地的地层特征，分析了地热水资源的总体状况及其特点，为该地区地热水资源的开发利用提供了科学依据，促进我国经济的快速发展。     

污泥处理的发展过程及问题探讨

对我国污泥处理现状进行了深入的剖析，介绍了污泥处理工艺的发展、水处理工业的发展、污泥综合利用等，指出了污泥发展总趋势是向资源化发展。提出了要想提高我国污泥处理的水平，除了提高人们的环保意识、建立完善的管理体制外，相关基础工业的提高也是至关重要的。