洁净煤（水煤浆）用高效分散悬浮剂的制备

通过选用特定的小分子单体,采取分段聚合方式,合成具有特定官能团的化合物,用作水煤浆分散悬浮剂。     

现代紫外C消毒技术在污水处理中的应用

本文介绍了紫外消毒技术的原理及系统组成等,并以福州经济技术开发区污水处理厂应用紫外消毒技术为例,探讨紫外消毒技术在污水处理中的应用,以杀菌效率及经济技术指标分析,表明紫外消毒技术具有高效广谱杀菌、运行稳定、安全可靠、占地面积小、成本低、大水量连续运行、无污染等特点.是其它传统的消毒手段所无法比拟的.     

绿色水处理剂氢氧化镁应用的研究进展

氢氧化镁(氧化镁)被称为绿色安全的废水处理剂,本文评述了氢氧化镁在环境保护方面的研究与应用进展,包括工业废水中铅、铬、镍等重金属离子的去除和酸性废水的中和处理,并列举了氢氧化镁对一些实际废水的良好处理效果,包括其对一些特殊废水如含硼废水和放射性废水的处理效果,最后展望了其在生产和应用方面的发展前景。     

Sorption and permeation of solutions of chloride salts, water and methanol in a Nafion membrane

The sorption of water–methanol mixtures containing a dissolved chloride salt in a Nafion 117 membrane, and their transport through the membrane under the driving force of a pressure gradient, have been studied. Both type of experiments was performed by using five different salts: lithium chloride, sodium chloride, cesium chloride, magnesium chloride and calcium chloride. It was observed that both the permeation flow through the membrane and the membrane swelling increase significantly with the methanol content of the solutions. These facts are attributed to the increase in wet membrane porosity, which brings about the increase of the mobility of solvents in the membrane, besides the increase of the mobility of the polymer pendant chains. In contrast, the influence of the type of electrolyte on the membrane porosity and permeability is not very important, with the exception of the CsCl solutions, which is probably due to the small hydration ability of the Cs⁺ ion.     

上海市创立最早的杨树浦水厂

该文介绍了具有120年供水历史的上海杨树浦水厂的创建和发展、供水现状与技术管理，以及为提高水质和供水可靠性采取的技术和管理措施。     

呼和浩特石化公司凝结水回收改造工程总结

本文主要对呼和浩特石化公司凝结水回收系统改造前的状况、采取的改造措施及改造后的效果进行了总结，并就今后可能的改造作了预测分析。     

高铁酸盐的制备及其在水处理中的应用

高铁酸盐是一种集氧化、絮凝、杀菌等为一体的环境友好型多功能水处理剂。综述了国内外高铁酸盐在制备及水处理应用中的现状,并对该课题今后的研究方向做了展望。     

用混合式遗传算法进行给水管网现状分析

将广义简约梯度法(GRG)思想应用于传统遗传算法,提出一种新的混合式遗传算法(HGA),此方法具有很强的全局和局部搜索能力,并且无需复杂的编码、解码过程,可以准确解决多变量、多峰值的给水管网现状分析问题。采用此算法,绝大多数的计算值与实测值的误差可减小到1%以下,能准确反映管网的实际工况。     

基于改进K-Means聚类的煤炭交易者信誉度划分

针对目前煤炭销售中存在的煤炭质量信息分散性与质量计价政策对其质量精确性要求的矛盾,提出了采用对初始聚类中心优化选取的K-Means聚类算法,对大型煤炭企业及其联盟客户煤炭质量检验数据进行系统分析和挖掘,获得双方质量检验行为统计规律,进行交易双方信誉度等级划分,将不确定性的质量指标转化为确定性的交易者质量检验行为评价。该研究一方面可为煤炭企业在发生交易者质量纠纷情况下合理划分质量检验责任提供参考,监督和指导矿井和客户的质检管理工作;另一方面可以为煤炭企业提供销售决策辅助支持。     

Acidolysis of babassu fat catalyzed by immobilized lipase

The lipase-catalyzed interesterification of oils and fats gives products that are unobtainable by chemical interesterification methods. Acidolysis of babassu fat and palmitic acid, catalyzed by immobilized lipase (Lipozyme; Novo Industri, Bagsveard, Denmark), was studied. The reactions were performed at 65°C with 5% w/w enzyme for 4 h. The molar proportions of babassu fat/palmitic acid were 1∶0.1, 1∶0.3 and 1∶0.5. At the end of the reaction period, the catalyst particles were removed by filtration, and the residual oil was extracted with organic solvent (diethyl ether). The recovered particles were then reused. The palmitic acid content of babassu fat before and after acidolysis changed from 10 to 22% at a molar proportion of 1∶0.5. The equilibrium was attained in about 4 h. The original water and enzymatic activities of Lipozyme were maintained after acidolysis. Water sorption isotherms of the immobilized enzyme were determined at 25, 35 and 45°C. From the temperature dependence of the isotherms, isosteric heats of sorption were evaluated by means of the Clausius Clapeyron equation. Monolayer moisture content was calculated by means of the B.E.T. and Guggenhein-Anderson-De Boer analyses. Paper presented at the International Meeting on Fats and Oils Technology, Universidade Estadual de Campinas, Brazil, 1991.