Evaluation and Case Study on the Comprehensive Utilization of Fly Ash

粉煤灰是煤粉燃烧后，随锅炉烟气排放的细灰状残留物，是煤炭燃烧的副产品。随着煤炭的广泛应用，世界各国的粉煤灰排放量都呈逐年增加的趋势，粉煤灰的综合利用率成为亟需解决的重要问题。粉煤灰的大量堆放，不仅占用了宝贵的土地资源，而且对环境和人类的健康带来了直接或间接的威胁和危害。粉煤灰曾长期被视为固体废弃物而未得到很好的利用，浪费和污染现象严重。随着社会的发展，越来越多的研究和实践证明粉煤灰可作为一种替代资源加以循环利用，在资源日益匮乏的今天，粉煤灰逐渐引起了关注。对粉煤灰进行资源化利用，以达到变废为宝，化害为利，成为当今的研究热点之一。基于我国粉煤灰的资源化利用还存在着诸多的问题，如粉煤灰综合利用率和...Fly ash, a byproduct of coal combustion, is a dust residue discharged with boiler flue gas when burning coal. With the wide use of coal, there is an increasing trend of fly ash emissions all over the world. However, comprehensive utilization of fly ash becomes a pressing problem. Piling up fly ash not only occupies valuable land but also harms human health and environment directly or indirectly. P...学位：理学硕士院系专业：海洋与环境学院环境科学与工程系_环境科学学号：2005130227

Study on Public Participation in Environmental Protection

在中国,公众参与、辅助政府各项工作已经取得一定的进展,然而公众参与程度和方式有待进一步扩充和完善。由于一些环境问题的潜在高风险性以及部分公众环保意识的迅速增强,使得政府充分发挥民主作用,鼓励和引导更深、更广层次的公众参与成为迫切要求。本文将在充分认识公众参与环保事业现状的前提下,研究其特殊性与局限性,并重新明确、界定公众参与的对象,最后在识别已有条件和潜在机遇的基础上,探索如何充分利用信息化、市场化条件建立、完善各种公众参与渠道,进而创造生动、务实的公众参与环境保护的局面。In China,it has been making progress for the public to participate and assist the work of government.However,the method and extent of participation still need to be amended and broaden.Because of the potential high risk of resolutions of some environment problems and ascending demand of the public to protect the environment,to better promote democracy and to encourage and induct broader and more profound pubic participation is impendence right now.In this paper,with the precondition of full understanding of recent public participation in environmental protection,we study the particular situation in China and its disadvantages,then definitude and redefine the categories of people involved in public participation.In the last,by identifying the qualifications and opportunities of environmental public participation,we explore a new situation that the public participate in environmental protection in a vivid and concrete way by clearing and amending the channels for qublic participation under the advantage of informationization and market power

Commentary on Assessment Methods for Performances of Comprehensive Environmental Rehabilitation

在总结各地环境综合整治情况的基础上,将环境综合整治绩效评价的方法归总为指标法和投入效益分析法。前者通过制定全面的参照系,有利于政府综合整治工作的横向与纵向的比较;后者则用更为直观的货币值衡量综合整治的收益,通过与费用比较得出环境综合整治的绩效值。Based on summarizing situations of comprehensive environmental rehabilitation all over the country,two main methods to evaluate performance of comprehensive environmental rehabilitation were generalized,including index method and input-benefit analysis method. The former method was propitious to comparing performance in longitudinal and latitudinal way by establishing comprehensive frame of indexes. The latter used more obvious monetary value to weigh benefit of comprehensive rehabilitation by comparing with its cost to acquire the value of comprehensive environmental rehabilitation

Retrospect and Outlook on Utilization of Fly Ash

介绍了粉煤灰的物理化学性质和结构,从不同角度分析了粉煤灰的应用情况及存在的问题,并对粉煤灰潜在的综合利用途径进行了探讨和展望,以期为粉煤灰的合理有效利用提供可行依据。Physical and chemical characteristics and structure of fly ash were introduced. Utilization situation and existing problems of fly ash were analyzed from different perspectives. And potential approaches of integrated utilization of fly ash were discussed to provide feasible basis for reasonable and effective application of fly ash

交流电磁流体直接发电的粘性影响

本文在磁雷诺数不作任何限制的条件下,对直管感应式发电器(图1)计算了粘性对电参数和流场的影响,并着重探索各种因素对功率因子的影响

管理信息集成配置在EPON网管中的设计和实现

为了提高以太网无源光网络客户端实时更新管理信息的效率,对目前工程运用中网管在多客户端编辑管理信息时采用客户端排他独占的编辑模式和重启网管更新数据的方式进行了研究,对网管在支持多客户协同编辑管理信息时表现出的弊端进行了分析,提出了管理信息集成配置的设计。该方案解决了多客户端协同编辑问题,同时保证了配置上报的可靠性