Multi-objective, decision-based assessment of a water quality monitoring network in a river system

Water quality monitoring network design has historically tended to use experience, intuition and subjective judgement in locating monitoring stations. Better design procedures to optimize monitoring systems need to simultaneously identify significant planning objectives and consider a number of social, economic and environmental constraints. The consideration of multiple objectives may require further decision analysis to determine the preference weights associated with the objectives to aid in the decision-making process. This may require the application of an optimization study to extract such information from decision makers or experts and to evaluate the overall effectiveness of locating strategies. This paper assesses the optimal expansion and relocation strategies of a water quality monitoring network using a two-stage analysis. The first stage focuses on the information retrieval of preference weights with respect to the designated planning objectives. With the aid of a pre-emptive goal programming model, data analysis is applied to obtain the essential information from the questionnaire outputs. The second stage then utilizes a weighted multi-objective optimization approach to search for the optimal locating strategies of the monitoring stations in the river basin. Practical implementation is illustrated by a case study in the Kao-Ping River Basin, south Taiwan.     

Preparation of rare-earth metal complex oxide catalysts for catalytic wet air oxidation

Catalytic wet air oxidation (CWAO) is one of the most promising technologies for pollution abatement. Developing catalysts with high activity and stability is crucial for the application of the CWAO process. The Mn/Ce complex oxide catalysts for CWAO of high concentration phenol-containing wastewater were prepared by coprecipitation. The catalyst preparation conditions were optimized by using an orthogonal layout method and single-factor experimental analysis. The Mn/Ce serial catalysts were characterized by Brunauer-Emmett-Teller (BET) analysis and the metal cation leaching was measured by inductively coupled plasma torch-atomic emission spectrometry (ICP-AES). The results show that the catalysts have high catalytic activities even at a low temperature (80°C) and low oxygen partial pressure (0.5 MPa) in a batch reactor. The metallic ion leaching is comparatively low (Mn<6.577 mg/L and Ce<0.6910 mg/L, respectively) in the CWAO process. The phenol, COD_Cr, and TOC removal efficiencies in the solution exceed 98.5% using the optimal catalyst (named CSP). The new catalyst would have a promising application in CWAO treatment of high concentration organic wastewater. Translated from Techniques and Equipment for Environmental Pollution Control, 2005, 6(2): 40–44 [译自: 环境污染治理技术与设备]     

混凝法在滇池蓝藻暴发期净水除藻的可行性研究

采用精制硫酸铝为混凝剂,L93^4正交法安排滇池蓝藻暴发期混凝沉降除藻除净水工艺实验。结果表明,混凝剂种类、水样pH值对蓝藻去除率有很大影响。研究确定了混凝剂除藻最佳操作条件,为混凝法去除蓝藻的工业化提供了理论和实际操作依据。     

“赛力奇”的致突变性研究

选用Ａｍｅｓ试验、小鼠骨髓细胞微核实验和小鼠显性致死突变试验对新型食品添加剂“赛力奇”的致突变性进行了检验。结果表明：三项试验的结果均生。根据国家《食品安全性毒理学评价程序（试行）》的规定，认为“赛力奇”无致突变性。     

海南万泉河水资源保护规划研究

海南万泉河水资源保护规划研究宗子就，荆帆，沙平（北京有色冶金设计研究总院北京１０００３８）谢宁，蔡小平（琼海市环境资源局海南５７１４００）关键词水资源，水质控制目标，保护规划ＡＳＴＡＤＹＯＮＴＨＥＷＡＴＥＲＲＥＳＯＵＲＣＥＰＲＯＴＥＣＴＩＯＮＰＲＯＧ...     

光化学反应的环境效应

光化学反应具有良好的环境效应，本文概述了有机合成和环境化学中光化学反应对环境的影响。     

Optimization of harmonious development on regional energy-economy-atmospheric environment system

Ｏｐｔｉｍｉｚａｔｉｏｎｏｆｈａｒｍｏｎｉｏｕｓｄｅｖｅｌｏｐｍｅｎｔｏｎｒｅｇｉｏｎａｌｅｎｅｒｇｙ－ｅｃｏｎｏｍｙ－ａｔｍｏｓｐｈｅｒｉｃｅｎｖｉｒｏｎｍｅｎｔｓｙｓｔｅｍ￥ＮｉｎｇＤａｔｏｎｇ，ＷａｎｇＬｅｉ（ＣｈｉｎｅｓｅＲｅａｌＥｓｔａｔｅ...     

会计电算化对内部审计的影响

随着网络环境下会计电算化管理系统的应用,传统的审计模式、工作方法已不能满足新形式下内部审计的需要。本文在论述电算化会计系统的发展历程的基础上,阐述了会计电算化对内部审计所带来的制约和影响,提出了会计电算化环境下,内部审计工作的工作重点。     

我国生态工业园区稳定性的调研报告

作为可持续发展的重要实践工具，生态工业园（EIPs）建设得到快速推进的同时，也由于多方面存在的影响因素制约，使园区面临“不稳定”风险．本调研报告通过专家调查和全国范围内的统计调查确认了“技术充足，政府支持，行业多样，核心组员，成员沟通”等5个影响因素对我国生态工业园区稳定发展具有显著影响，并对数据结果做了进一步的讨论，提出了相应的政策建设。     

风向变化对城市大气污染的影响及试验分析

针对城市大气污染的复杂多变状况，在理论分析的基础上，通过风洞实验对城市大气污染扩散模型进行了模拟试验研究，建立了适合一定条件下城市大气污染物扩散的数学和物理模型，并对城市大气污染状况的影响因素进行了分析，在得到特定条件下城市大气污染扩散普遍规律的同时，重点讨论了风向变化对城市大气污染的影响，该方法同时还可以应用于城市大气污染物扩散浓度的估算。