天然河流的二维等效扩散模型

通过对天然河流流带的拉伸或压缩处理，使之成为处处流速和水深均相等的理想河流，在此基础上建立了等效二维扩散模型。文中对建模方法和参数计算方法作了详细的介绍。     

海洋中溶存氧化亚氮研究进展

N2O是大气中重要和微量气体，对温室效应和大气臭氧层损耗有重要作用。海洋是大气N2O原重要源和汇。开展海洋中溶存N2O的研究，有助于了解海洋对大气N2O和全球变暖的贡献。本文综述了海洋中溶存N2O的研究现状，着重介绍了海洋中溶存N2O的分布特征、海气交换爱量的估算及其产生和消耗机理，并探讨了该领域研究中存在的问题。     

治理橡胶废水的活性污泥模型研究

采用模拟曝气工艺研究了活性污泥对橡胶厌氧废水的CODcr,NH3-N的降解条件，确定了最佳的曝气时间，污泥浓度及溶解氧浓度与处理效果的关系。     

Research on low emission MSW gasification and melting system

In order to eliminate secondary pollution caused by municipal solid waste (MSW) incineration, a MSW gasification and melting process is proposed. The process is expected to reduce the emission of pollutants, especially heavy-metals and dioxins. In this paper, the combustible components of MSW and simulated MSW were gasified in a lab-scale fluidized bed at 400°C–700°C when the excess air ratio (ER) was between 0.2 and 0.8. The experimental results indicated that the MSW could be gasified effectively in a fluidized bed at approximately 600°C–700°C when excess air ratio was 0.2–0.4. The melting characteristics of two typical fly ash samples from MSW incinerators were investigated. The results indicated that fly ash of pure MSW incineration could be melted at approximately 1,300°C and that of MSW and coal co-combustion could be melted at approximately 1,400°C. When temperature was over 1,100°C, more than 99.9% of the dioxins could be decomposed and most of the heavy-metals could be solidified in the slag. Based on the above experiments, two feasible MSW gasification and melting processes were proposed for low calorific value MSW: (1) sieved MSW gasification and melting system, which was based on an idea of multi-recycle; (2) gasification and melting scheme of MSW adding coal as assistant fuel. __________ Translated from Environmental Science, 2006, 27(1): 69–73 [译自: 环境科学]     

球磨机局部隔声罩的设计和应用

介绍了球磨机局部隔声罩的设计思路和装置结构。在齐鲁石化公司热电厂球磨机上应用，取得了良好的隔声效果。     

AZ31B镁合金挤压工艺研究

在油炉中熔炼AZ31B镁合金 ,用熔剂保护 ,石墨模铸造圆锭。铸锭经 40 0℃× 1 2h的均匀化处理后 ,进行热挤压 ,其挤压温度为 40 0℃ ,挤压速度为 1～ 2 .5m/min ,挤压比为 1 0～ 45。共挤出了 1 1种规格的棒材、管材、型材 (工字型、槽型、角形、方形、T形等 ) ,挤压过程中均发生了动态再结晶 ,其抗拉强度σb 在 2 75～ 2 85MPa之间 ,屈服强度σ0 .2　在 2 2 0～ 2 2 5MPa之间 ,延伸率δ在 1 5 %～ 1 7%之间。所制订的工艺合理 ,挤压出的棒材、管材、型材有较好的力学性能     

絮凝法处理难降解垃圾渗滤液的实验研究

用絮凝法对难降解的循环式准好氧垃圾渗滤液进行了处理,以垃圾渗滤液的CODcr去除率为主要考察指标,探讨了絮凝剂、最佳絮凝剂的投加量以及pH值等因素对这类渗滤液处理效果的影响,在此基础上确定了最佳处理条件.结果表明,用硫酸亚铁的絮凝处理效果最好,当浓度为20%的硫酸亚铁投加量为0.7 mL/100 mL,pH值为10,与聚丙烯酰胺(PAM)的投加比例为2:1时,可使垃圾渗滤液的CODcr去除率达到60%,色度去除率达到40%,使渗滤液的CODcr从2654.6 mg/L降到977.8 ms/L,达到国家三级排放标准.     

矿区开采沉陷地质灾害与防治对策研究

分析了开采沉陷地质灾害的成因，着重研究了开采沉陷地质灾害的危害状况，最后提出了应积极进行开采沉陷监测预报、综合采用减轻地表沉降技术、全面治理塌陷区域环境灾害等综合防治对策。     

微生物降解法处理含酚废水的研究进展

微生物降解法处理含酚废水作为一种简便、高效的处理方法具有传统方法所无法比拟的优点。文中从降酚菌的来源、苯酚的生物降解途径以及固定化微生物技术在处理含酚废水中的应用等方面介绍了微生物降解法处理含酚废水的最新研究进展,预期该领域具有十分广阔的应用前景。     

Effect of organophosphorus pesticide pollution on soil animals

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