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一、前言随着环境污染的日趋严重,对环境质量进行系统分析就显得愈为重要,建立以计算机为主要支持工具的环境管理信息系统是对环境质量进行系统分析的一种行之有效的方法。“七五”期间,各级地方环境管理信息系统相继建立,为系统、科学、快速地分析 相似文献
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废物交换管理信息系统研究 总被引:2,自引:0,他引:2
在废物交换模式分析的基础上,对交换进行了分类,并总结其各自的作用。通过对废物交换各环节的阐述,用系统分析的方法,分析了废物交换管理信息系统的基本功能和组成。并且结合计算机技术,以现代数据库为核心,通过系统分析、系统设计、系统实施等步骤,研制了废物交换管理信息系统,根据废物交换的基本功能要求,实现信息的输入、输出、传输、检索和统计计算等功能。并且在该系统研制的基础上,对系统的智能化作了理论探讨。 相似文献
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环境管理及其科学化已成为加速我国环境保护事业发展、实现我国环境状况根本好转的重要前提。当前,国外发达国家已进入系统化管理环境的阶段他们的经验教训对我国的环境管理具有借鉴作用。本文从调研美国、英国、加拿大等国家的水质管理信息系统入手,剖析了,他们的共同特点和存在问题,特别是对美国 STORET-COGENT 水质管理信息系统的基本结构、STORET 的发展历史,STORET 和 COGENT 系统的使用功能以及成功、失败之处作了较详细的分析和介绍。文章最后归纳了上述系统对建立我国水环境质量管理信息系统(NWEQ-MIS)的三点借鉴之处,供读者参考。 相似文献
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将WebGIS和ASP技术应用于矿区环境管理信息系统(MIS)中,对于矿区的环境管理具有重要价值.在研究矿区实际环境信息管理流程及相关技术的基础上,开发出了矿区环境MIS,主要包括需求分析、系统分析、数据库结构和系统功能等内容. 相似文献
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本文论述了在开发矿区环境保护管理信息系统过程中系统分析阶段的主要研究内容等。在系统分析时现行系统的组织结构和职能进行深入的调查研究,明确新系统的目标功能,围绕目标功能进行数据结构分析,在功能分析和数据结构分析的基础上,采用结构化分析方法建立系统的逻辑模型。 相似文献
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REMIS is one of key research projects sponsored by the central government. It is recommended to regional EPAs as a main tool of the environmental management. REMIS simulates the functions of the regional EPAs and aimed to improve their management level. The national environmental management information system will base on REMIS.Functional analysis is the kernel of the REMIS system analysis. Data and data flow analysis are used to support the functional analysis.Investigations on the functions of the local EPAs of eight provinces and 12 cities have been taken. The functions were carefully sorted. Modular design method was used in system analysis and system design.The system analysis included functional analysis, data analysis and data flow analysis. The system design is based on the system analysis. HIPO diagram of each modular, data base structure, menu design, selection of hardware and software environment were the main items of the system design. 相似文献
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《Environmental Science & Policy》2008,11(2):115-124
The demands on monitoring systems have gradually increased, and interpretation of the data is often a matter of controversy. As an example of this, we investigated water quality monitoring and the eutrophication issue in Sweden. Our results demonstrate that powerful statistical tools for trend analysis can reveal flaws in the data and lead to new and revised interpretations of environmental data. In particular, we found strong evidence that long-term trends in measured nutrient concentrations can be more extensively influenced by changes in sampling and laboratory practices than by actual changes in the state of the environment. On a more general level, our findings raise important questions regarding the need for new paradigms for environmental monitoring and assessment. Introduction of a system in which conventional quality assurance is complemented with thorough statistical follow-up of reported values would represent a first step towards recognizing that environmental monitoring and assessment should be transformed from being a system for sampling and laboratory analyses into a system for interpreting information to support policy development. 相似文献
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大气监测质量保证是一项室内外密切配合的系统工程,每一个步骤对测值都有影响。为提高大气中氮氧化物测定值的准确性,我站采用双管平行对比采样,在长期实践中总结出从室外采样到室内样品分析质量保证方法和经验,以保证大气中氮氧化物测值准确可靠。 相似文献
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The effect of coupling coagulation and flocculation with membrane filtration in water treatment: A review 总被引:4,自引:0,他引:4
TorOve Leiknes 《环境科学学报(英文版)》2009,21(1):8-12
Water supply and sanitation demands are foreseen to face enormous challenges over the coming decades to meet the fast growing needs in a global perspective. Significant growth in the industry is predicted and membrane separation technologies have been identified as one of the possible solutions to meet future demands. Application and implementation of membrane technology is expected both in production of potable water as well as in treatment of wastewater. In potable water production membranes are substituting conventional separation technologies due the superior performance, potential for less chemical use and sludge production, as well as the potential to fulfill hygienic barrier requirements. Membrane Bio-Reactor (MBR) technology is probably the membrane process which has had most success and has the best prospects for the future in wastewater treatment. Trends and developments indicate that this technology is becoming accepted and is rapidly becoming the best available technology (BAT) for many wastewater treatment applications. A major drawback of MBR systems is membrane fouling. Studies have shown that fouling mitigation in MBR systems can potentially be done by coupling coagulation and flocculation to the process. 相似文献