纯水生产中离子交换柱混床再生冲洗终点的研究

理论分析了纯水电导率与离子含量的关系,结合离子交换树脂混床再生冲洗电导率的变化趋势,确定了以电导率为指标的混床再生冲洗终点的控制值,以电导率控制冲洗终点效果良好,比PH控制更,灵敏,同时还分析了终点控制不准确,可能造成氯化钠污染树脂的情况。     

软水和无盐水的制备

本文主要介绍了离子交换树脂制备软水和离子交换树脂的组合制备无盐水的原理及工艺，并就离子交换法软化水的过程中交换树脂被有机物污染的现象及解决方法和固定床制备无盐水时树脂层的再生进行了阐述。     

纯水生产中离子交换柱混床再生冲洗终点的控制

分析了纯水电导率与离子含量的关系,结合离子交换树脂混床再生冲洗电导率的变化趋势,确定了以电导率为指标的混床再生冲洗终点的控制值,以电导率控制冲洗终点效果良好,比pH值控制更准确、灵敏。同时还分析了终点控制不准确,可能造成氯化钠污染树脂的情况。     

纯水,果味纯水杀菌问题的研究

对纯水，果味纯水生产制做过程中所用的各种杀菌方法进行了研究，包括杀菌条件，杀菌效果及对产品品质的影响。     

离子交换树脂再生剂关键技术指标的研究

文章确定了离子交换树脂再生剂的关键性技术指标,从而实现了生产过程中的有效控制,进而保证离子交换树脂再生剂产品的质量安全.     

实验室制备二氧化氯的新方法

进行ＥＣＦ漂白的试验研究,常常要在实验室制取ＣｌＯ２。目前国内常用的ＣｌＯ２实验室制取方法一般是先采用氯酸盐与硫酸反应并用ＳＯ２还原制得ＣｌＯ２气体,然后将ＣｌＯ２气体溶解在水中,从而制得ＣｌＯ２溶液。该方法化学反应多,试验操作较为复杂。本人有幸于近期在加拿大多伦多大学进行合作科研工作时专门学习了该校最新的ＣｌＯ２制取方法。现将该方法与国内通常使用的方法对比介绍如下,供同行参考。多伦多大学制取ＣｌＯ２溶液,只需浓度为１５０ｇ／ｌ的ＮａＣｌＯ２溶液及６ｍｏｌ／ｌ的Ｈ２ＳＯ４,其反应式为:８ＮａＣｌＯ２ ４…     

纯水、果味纯水杀菌问题的研究

对纯水，果味纯水生产制做过程中所用的各种杀菌方法进行了研究，包括杀菌条件，杀菌效果及对产品品质的影响。     

饮用纯水生产中离子交换树脂淋洗终点的研究

通过理论分析、计算离子交换树脂淋洗达到终点时出水的电导率并结合实际测定其变化趋势,同时考虑真实情况的偏差,确定以电导率为指标的淋洗终点的实际控制值。以电导率控制淋洗终点效果良好,而且比pH值更灵敏、准确。     

果味纯水的研制

以纯水为基础，通过特定的配方和工艺制成具有各种果味的清凉次料。果味纯水清澈透明，口味清淡，带有宜人的清香，是目前国内首次推出的新一代饮料。     

糖液过离交柱后DX值下降的原因及对策

离子交换树脂在新装柱处理后，处理葡萄糖液，在使用初期糖液DX值下降，对葡萄糖生产带来一定程度的影响，本文通过生产与实验相结合，逐步排查的方法进行了原因分析及采取的对策。     

蒸馏水的品控及包装设计——访屈臣氏蒸馏水业务董事总经理崔柏贤先生

<正> 众所周知,水对于人体而言是极为重要的。为了维持身体的平衡与保持身体健康,每人每天应饮用大量清水。为此,我们应该清楚了解饮用的食水含有什么物质,以及此物质对身体的影响。事实上,只有不含糖份、热量、色素、有害矿物质及杂质的水,才是最适宜人们日常饮用的饮料。 香港是一个工业化城市,环境污染问题渐趋严重,而且人们对身体健康日益关注,对于饮用水的来源特别重视。虽然日常饮用的食水已经过消毒及处理,亦时常被抽样化验,以确保水质符合卫生标准,可是食水仍会受到种种环境因素的影响而被受污染。因此,在九十年代的今天,蒸馏水市场有着飞速的发展。     

Experimental design to optimize preparation of activated carbons for use in water treatment

A series of seven activated carbons was obtained for use in drinking water treatments by steam-activation of olive-waste cakes. This raw material is an abundant and cheap waste byproduct of oil production, making these activated carbons economically feasible. The activated carbons, prepared by the one step method, were characterized, and the evolution of their characteristics (yield, adsorption capacities, and porosity) was analyzed as a function of the experimental parameters (activation temperature and activation time), using the Doehlert matrix. The Doehlert matrix allows the response surface to be studied with a good quality parameter estimation of the quadratic model. Each response has been described by a second order model that was adequate to predict responses in all experimental regions. The coefficients of the postulated model were calculated from the experimental responses by means of least squares regression, using the NEMROD software. We determined the region in which the optimum values of both activation temperature and activation time were achieved for the preparation of activated carbons suitable for use in water treatments. The "optimal activated carbon" was experimentally obtained, and its characteristic parameters showed a good agreement with those calculated from the model. The results obtained for activated carbons prepared by the one-step method were compared with those for activated carbons prepared by the two-step method. The characteristics of activated carbons obtained by the one-step and two-step methods showed that "one-step" activated carbons have a highly developed porous texture formed mainly of large macropores and micropores, whereas "two-step" activated carbons have a predominance of mesopores and narrow micropores. These activated carbons from olive-waste cakes showed a high capacity to adsorb herbicides (2,4-dichlorophenoxyacetic acid, 2,4-D; and 2-methyl, 4-chlorophenoxyacetic acid, MCPA) from water, with adsorption capacity values higher than those corresponding to a commercial activated carbon used from drinking water treatments.     

水质中总硬度的检测方法

目的建立快速检测水质总硬度的检测方法。方法基于工厂实际生产需求,采用快速试纸条方法对工厂内使用的配料用水、清洗用水、源水的总硬度进行检测,并通过方法优劣性分析、适用性验证、准确性验证、精密度验证等维度进行分析总结,同时与国标方法进行结果差异对比。结果通过对4个维度的实验证明,快速试纸条法检测结果与国标方法对比无显著差异。结论本研究中试纸条快速检测方法,可以满足生产过程中配料用水、清洗用水、源水的质量检测。     

实验室条件下制取玉米淀粉的工艺研究

根据我们多年积累的经验，摸索出了在实验室条件下，制备适量的特定玉米淀粉样品的工艺流程。     

甜菜高效增糖剂使用效果试验

甜菜是和静地区的主要经济作物之一。我团近年种植的甜菜主栽品种是KWS5075，生产实践表明该品种丰产性较好但含糖率偏低。为了解决甜菜生产的高产低糖这一问题，2003年我团引进使用了哈尔滨工业大学糖业研究院提供的甜菜高效增糖剂，并连续两年对其进行不同使用剂量增糖效果对比试验，现将试验结果初报如下。     

生物酶处理在纯棉织物上的应用及其发展前景

介绍了生物酶的种类、发展概况以及在棉织物上的应用，并对其发展前景进行了展望。     

Optimisation of flours for chapatti preparation using a mixture design

A mixture design was evaluated for the preparation of composite chapatti flours from two wheat cultivars, Mercia and Galahad, as single cultivars did not yield flours suitable for chapatti production. Physicochemical and rheological tests were applied to determine flour quality. Dough development time (Peak time) and dough stability increased and tolerance index decreased with increasing level of Mercia in the composite flour. Instron and sensory tests were applied to evaluate changes in softness of chapattis at different intervals of storage. Maximum response in texture softness was found with 500 g kg^?1 Mercia in the composite flour. Dough prepared from this composite flour showed low stickiness, moderate sheeting resistance and moderate subsequent shrinkage, making it of suitable sheeting quality for chapatti production. It yielded chapatti of soft texture whose scoop formation capability did not change significantly during storage. Copyright © 2006 Society of Chemical Industry     

航空配餐楼空调设计

介绍了航空楼的配餐工艺流程、食品生产流程和温度控制要求,结合工程实例着重介绍了航空配餐楼空调系统、通风系统、自控系统设计。     

凹凸褶皱型纯棉水刺非织造布的制备工艺研究

利用棉纤维在碱液处理时膨化、在松式洗烘后发生收缩的特性,首先对纯棉水刺非织造布局部进行拒水剂整理,然后采用氢氧化钠进行碱缩处理,获得具有凹凸褶皱效果的纯棉水刺非织造布。利用正交设计方案对氢氧化钠质量浓度、温度和堆置时间进行优化,结果表明:当氢氧化钠质量浓度为300 g/L、温度为30℃、堆置时间为8 min时,可获得良好吸湿保湿且具有美观效应的凹凸褶皱型纯棉水刺非织造布。     

造纸水系统的优化设计

以一个工程设计的实例,分析如何对纸机的水系统进行优化设计,以降低造纸生产的水耗.