水泥行业用喷雾增湿塔的改型设计

介绍了喷雾法增湿的基本原理、设备的结构设计及附件的选型，讨论了对实际生产中可能发生的操作故障的防止与消除措施。实践证明，这种新型喷雾增湿塔能较好地应用于水泥生产。     

喷雾增湿设备的数学模拟设计

系统论述了喷雾增湿塔内水滴的运动状态与含尘气体的流动特性,建立了一个能反映喷雾增湿操作过程的数学模型,有助于确定该设备生产操作中的最佳控制参数.     

喷雾增湿设备的数学模拟设计

系统论述了喷雾增湿塔内水滴的运动状态与含尘气体的流动特性，建立了一个能反映喷雾增湿操作过程的数学模型，有助于确定该设备生产操作中的最佳控制参数。     

半干半湿法烟气脱硫装置中喷雾增湿技术的研究

脱硫塔内喷雾增湿技术是影响燃煤锅炉半干半湿法烟气脱硫效果的一个重要环节。分析了供水量和压力的变化关系 ,通过对脱硫装置喷雾增湿技术的优化 ,实现对增湿系统高压水的压强的精确调节 ,控制脱硫塔内雾滴的颗粒直径在 80 μm左右 ,从而达到理想的增湿效果     

半干半湿法烟气脱硫装置中喷雾增湿技术的研究

脱硫塔内喷雾增湿技术是影响燃煤锅炉半干半湿法烟气脱硫效果的一个重要环节。分析了供水量和压力的变化关系，通过对脱硫装置喷雾增湿技术的优化，实现对增湿系统高压水的压强的精确调节，控制脱硫塔内雾滴的颗粒直径在80μm左右，从而达到理想的增湿效果。     

灰水喷雾增湿简易脱硫工艺的工业试验研究

本文介绍了以灰水作为增湿剂的喷雾增湿简易脱硫工艺的原理、流程、工程概况和工业试验 ,分析并研究了运行效果 ,探讨了存在的主要问题 ,进行了技术和经济评价     

灰水喷雾增湿简易脱硫工艺的工业试验研究

本文介绍了以灰水作为增湿剂的喷雾增湿简易脱硫工艺的原理、流程、工程概况和工业试验,分析并研究了运行效果,探讨了存在的主要问题,进行了技术和经济评价。     

喷雾增湿塔用离心式雾化器的设计

在分析各种运行参数对雾化效果影响的基础上 ,介绍了喷雾增湿塔用离心式雾化器的选型与放大设计的方法。     

喷雾增湿塔用离心式雾化器的设计

在分析各种运行参数对雾化效果影响的基础上，介绍了喷雾增湿塔用离心式雾化器的选型与放大设计的方法。     

液雾荷电高效团聚颗粒物实验研究

针对颗粒物危害环境及人类健康但难以高效脱除的问题,以粉煤灰和碳黑颗粒为研究对象,提出了结合化学团聚和水雾荷电两种方法的液雾荷电团聚技术,并对颗粒物进行了团聚捕集实验。研究发现,液雾荷电能够有效促进颗粒物的团聚。以粉煤灰为例,其团聚效率分别比水雾增湿、水雾荷电和化学团聚提高了34.1百分点、13.8百分点、11.9百分点。在团聚剂中羧甲基纤维素钠的质量分数为0.3%、喷雾量为800mL/h、荷电电压为6.0kV的工况下,粉煤灰的团聚效率最佳值可达58.5%。     

甲草胺和丁草胺等除草剂在多介质环境中环境行为综述

本文详细综述了甲草胺和丁草胺的物理化学性质,总结了它们在土壤和水中的迁移,吸附和微生物降解转化,对动植物的毒性和作用机制,酰胺类除草剂在分析检测方面的进展以及在污染的防治与修复方面的一些措施     

持久性有机污染物分析和处理技术研究进展

阐述了持久性有机污染物 (POPs)的特性、POPs对人体健康和生态环境的危害及其判定基准 ,综述了其分析和研究方法及治理技术 ,归纳了POPs的研究内容。     

火力发电厂粉煤灰干燥特性研究

介绍了利用实验台对粉煤灰的干燥特性进行试验研究的情况 ,给出了粉煤灰的干燥曲线、干燥速率曲线和粉煤灰平衡湿含量计算式 ,分析了在干燥过程中粉煤灰的阻力特性 ,为粉煤灰干燥装置的工业化设计提供了理论依据     

我国10万t/d以下城市污水处理工艺

我国城市污水处理厂的规模绝大多数在10万t/d以下(含10万t/d),由于10万t/d以下的城市污水处理的工艺繁多,且各有利弊,选择何种工艺对城市污水进行处理,是建设项目的业主、设计单位和主管政府部门较难解决但又必须解决的问题.本文从城市污水处理厂的处理工艺入手,根据国家的城市污水处理及污染防治技术政策,对10万t/d以下城市污水处理工艺进行排序和优选,并给出城市污水处理厂建设及运营的主要技术经济指标,供城市污水处理厂建设的相关方参考.     

The influence of the log-conductivity autocovariance structure on macrodispersion coefficients

Macrodispersion coefficients are derived for heterogeneous porous media under ergodic and nonergodic conditions. Influences of the log-conductivity autocovariance function on macrodispersion are investigated through six commonly used isotropic log-conductivity autocorrelation models. They are the exponential, Gaussian, spherical, linear, Whittle and Mizell A-type models. Analytical expressions for ergodic macrodispersion coefficients for each of these models are presented. The results for nonergodic macrodispersion coefficients are calculated numerically. The results show that the various autocovariance functions, which display slight differences in the preasympototic region, have little effect on the ultimate macrodispersion coefficient. The effect of nonergodicity is more significant than the log-conductivity autocovariance function for the aquifers exhibiting unimodal log-conductivity distribution.     

Stepwise superposition approach for the analytical solutions of multi-dimensional contaminant transport in finite- and semi-infinite aquifers

Analytical solutions of contaminant transport in multi-dimensional media are significant for theoretical and practical purposes. However, due to the problems for which the solutions are sought which are complex in most of the cases, most available analytical solutions in multi-dimensional media are not given in their closed forms. Integrals are often included in the solution expressions, which may limit the practitioners to use the solutions. In addition, available multi-dimensional solutions for the third-type sources in bounded media are fairly limited. In this paper, a stepwise superposition approach for obtaining approximate multi-dimensional transport solutions is developed. The approach is based on the condition that the one-dimensional solution along the flow direction is known. The solutions are expressed in their closed forms without integrals. The transport media to the solutions are flexible and can be finite, semi-infinite, or infinite in the transverse directions. The solutions subject to the first- and third-type boundary conditions at the inlet with a distributed source over the domain are obtained. The integrals in some known solutions can also be evaluated by the approach if they can be derived to include known longitudinal integrals with respect to time. The accuracy and efficiency of the solutions proposed in this paper are verified through test problems and calculation examples.     

我国10万t／d以下城市污水处理工艺

我国城市污水处理厂的规模绝大多数在10万t／d以下（含10万t／d），由于10万t／d以下的城市污水处理的工艺繁多，且各有利弊，选择何种工艺对城市污水进行处理，是建设项目的业主、设计单位和主管政府部门较难解决但又必须解决的问题。本文从城市污水处理厂的处理工艺入手，根据国家的城市污水处理及污染防治技术政策，对10万t／d以下城市污水处理工艺进行排序和优选，并给出城市污水处理厂建设及运营的主要技术经济指标，供城市污水处理厂建设的相关方参考。     

焚烧炉中二恶英废气的产生与控制方法探讨

文中详述了焚烧炉中二恶英废气产生的原因,针对产生原因提出控制方法,并总结出治理二恶英废气的措施。提出了今后对二恶英的控制建议。     

Environmental Appraisal-Particulate Matter,Oxides of Sulfur,and Sulfuric Acid

The role of particulate matter and oxides of sulfur in degradation of the atmospheric environment is discussed. The Federal Air Quality Criteria for these pollutants are analyzed for their conformance with the requirement of the Clean Air Act of 1967 that they reflect the latest scientific knowledge pertinent to the indication of their effects on health and welfare. Visibility reduction by suspended particulate matter is treated and the bases for the criteria issued in the documents “Air Quality Criteria for Particulate Matter” and “Air Quality Criteria for Sulfur Oxides” are examined. The reactions between particulate matter and gaseous pollutants are discussed, along with the Impact of particulate matter on modifications of weather processes. Local effects, such as precipitation, are considered. The relationship between pollution by particulate matter and cloud formation is discussed, as are persistence of fog and the observation that certain sources of particulate pollution are also sources of ice nuclei.     

An alternative method for predicting organic solute volatilization rates under gas and liquid turbulence

A method for predicting organic compound volatilization rates under turbulent liquid and gas conditions is developed. The reference compounds are classified according to their physico-chemical properties. The mass transfer coefficient (K(OL)) ratios for organic solutes to the reference compounds are constant for a wide range of environmental conditions, including liquid or air turbulence, or both at once. The obtained results indicate that when the environmental conditions are the same the determination of the volatilization rates is strongly dependent on the solute properties and the chemical structure. The presented method can more effectively estimate the volatilization rates of the solutes than the traditional one under various environmental conditions especially for low volatility solutes. The advantages and disadvantages of the traditional method are also discussed.