膜技术在印染废水资源回收利用中的应用

主要论述了膜分离技术在印染废水中对非水资源,诸如PVA浆料、丝光淡碱、羊毛脂、丝胶蛋白、染料及水资源回收利用方面的应用.该技术的应用不仅节省资源和成本,还能减轻废水处理的难度,减少废水排放量,实现经济和环境效益.     

染整企业丝光淡碱液回收利用的实践探索

简述了印染行业丝光淡碱液处理现状;提出了在印染厂丝光淡碱液回收利用的生产实践:引进"浓碱浓度在线检测及自动加碱控制系统"、改造丝光后织物的漂洗方式、回收处理丝光淡碱液;分析了丝光淡碱液回用效果及经济效益。     

松堆丝光工艺和节能

木文介绍了松堆丝光工艺,重点就松堆丝光和常规紧式丝光的碱浓、碱液损耗、淡碱回收、蒸汽耗用等进行了讨论。结果表明,采用松堆丝光工艺,不但提高了产品质量,且节约能源,并有显著的经济效益。     

淡碱回收高效设备——介绍扩容蒸发器

印染行业的丝光淡碱回收,我国一直沿用列管式三效蒸发器,该设备制造难度大,蒸发率低,30年来汽水比从未超过1:2.5。1977年纺织部科技司为了在丝光淡碱回收上创出一条新路,设列了课题,并下达到我厂。我厂与大连工学院、镇江纺织机械厂协作,根据国外海水淡化“多须闪蒸”的技术原理,研究设计了一套淡碱连续苛化澄清和扩容器蒸发器蒸浓连续化设备。于1979年12月     

丝光废碱液在印染加工中的应用

为实现丝光淡碱液高效回收与二次利用,文中测试了四级高效蒸发浓缩碱、丝光淡碱液和NaOH溶液中物质浓度,将碱液应用于棉织物漂白和丝光,并对所获得织物性能进行对比分析。结果表明,丝光淡碱液经过浓缩后,NaOH、Na₂CO₃和Fe³⁺浓度分别提高107.8 g/L、3.5 g/L和3.6μg/mL;3种碱液用于纯棉织物漂白时,浓缩碱液H₂O₂分解率高达85.1%,较淡碱液和NaOH所对应值提高了6.6%和12.3%,使用浓缩碱液漂白织物的白度值最小;丝光淡碱液浓缩后用于棉织物丝光,可提高织物的毛效和钡值,尽管丝光效果略逊色于NaOH碱液,但可满足丝光要求,具备工业应用的潜质。     

牛仔布丝光工艺中淡碱与渗透剂的回收及其脱色技术

纺织行业的淡碱回收是国家的政策要求,但脱色技术问题一直困扰着相关企业。分析了当前相关脱色技术方案的优点和缺点,并提出了用有效氯进行脱色的技术方案。该技术方案不仅简单易行,投入少,运行成本低;而且不会因为增加脱色工艺而带来新的环境问题,为牛仔丝光淡碱脱色回收找到了一条有效途径。     

PH型连续扩容蒸发器节能减排效益

一台棉布丝光机每天将产生40～50 g/L的淡碱70～93 m3,如直接排放,不仅浪费,还需用5 t左右的硫酸来中和.PH-120型连续扩容蒸发器应用"扩容-蒸发"技术充分利用热能,使水汽比达到4:1,大大提高了淡碱回收的经济效益.     

丝光机的“管家婆”——扩容蒸发器

碱价上调了!环保要求更高了!您厂有丝光机吗?淡碱回收吗?福建石狮市协盛协丰印染实业有限公司2台丝光机，购买我厂1台KZ-216型扩容蒸发器回收淡碱，每天(减去成本和冷却水回用)，其使用了68天时问即收回了设备和厂房(钢架式)投资款，广东佛山南方印染和杭州萧山航民集团美时达印染有限公司正在使用。国际、国内已销售200多台。     

纺织染整工业废水污染物回收与废水处理

文中对国内外废水污染物回收及废水处理技术现状与发展进行了论述.介绍了纺织染整清洁生产工艺.具体说明了丝光淡碱回收、染料回收、蜡回收、羊毛回收、废水脱色处理及洗毛废水处理的方法.阐明了纺织染整工艺废水实现清浊分流,采用单项处理技术处理并回收,可降低处理费用,实现经济效益、环境效益和社会效益统一的观点.     

现代丝光设备(二)

现代丝光工艺要求加工综合效果具有：最小的门幅收缩量、残余收缩量低、织物尺寸稳定；改善折皱及弓纬，染料均匀上染，织物表面光泽和手感提高，加工重现性好；降低耗碱量，减少淡碱回收蒸发量。本文阐述通过优化组合丝光工艺设备获得较好的工艺综合效果。特别推荐了高速直辊丝光机、松堆丝光机、短流程打卷直辊丝光机及高效扩容蒸发器。     

在竞争中求发展在和谐中求共赢

在全球经济一体化、信息资讯透明度、以及产品同质化的程度越来越高的今天,激烈的市场竞争无处不在,最典型的是很多的人还是挥舞着低价竞争这把双刃剑在到处砍杀,既伤了别人也伤了自己.……     

Changes in the mucosa of the small intestine in white rats in the process of digestion

Morphological and morphometric studies of the small intestine of albino rats have shown that its villi undergo cyclic changes. These changes involve the death, growth and maturation of the villi. Digestion intensifies proliferative processes in the small intestinal mucosa. The data obtained support the conception that the death of the villi is a morphological expression of secretion (excretion) and absorption in the small intestine.     

世界主要产棉国标准对比分析

基于不同国家在种植、生产、气候、文化环境方面的差异,世界上主要产棉国棉花标准也存在差异性;而棉花物理性能本身和全球一体化棉花交易规则决定了棉花标准在很多方面必须是相同或相近的。为了有效地管理棉花质量和控制棉花标准,达到或趋近一个公平交易原则,为了优化国际棉花采购,比较并控制混配棉及棉花、棉纱的质量,介绍了棉花标准制定的意义,多方面分析了美国与中国细绒棉质量标准存在的异同点以及两国细绒棉标准发展的趋势,比较了主要长绒棉生产国棉花现行标准的异同点,为未来世界棉花标准制定达成共识提供了基础保证,为全世界棉花贸易纠纷有效处理提供了仲裁依据,有利于促进全世界棉花质量的改进和提高。     

QuEChERS前处理方法在食品检测中的应用进展

样品前处理是食品检测中的关键步骤,QuEChERS技术具有快速、简便、便宜、高效、可靠、安全等优点,不仅广泛应用于水果、蔬菜、谷物等样品中农药残留检测,还广泛应用于兽药残留、毒素、污染物、非法添加物等物质的检测,且涵盖的样品基质也越来越多。该文对近些年QuEChERS技术的改进以及在食品领域的应用进行综述。     

Age-associated changes in the amount of subcutaneous tissue in the face evaluated in the ultrasonic B mode

In this study, age-associated changes in facial skin, cosmetologically critical factors, were studied in terms of local subcutaneous fat tissue. The subjects were 98 Japanese females evenly chosen from their teens to 70s. On each subject, the thickness of subcutaneous tissue was determined by the ultrasonic B mode method on four facial sites, forehead, orbit, cheek, and mandible. Age-association of the tissue thickness was facial site-dependent. In the orbit, the subcutaneous tissue became thicker with age, whereas it showed a tendency of thinning in the forehead. No clear age-association was observed in the cheek or the mandible. To analyze the age-association further, the data were stratified into 'lean group' and 'obese group' based on their BMI, and subjected to multiple regression analysis. The age-association in the orbit was much more distinctive in the lean group than in the obese group.     

阻抗法检测食品中微生物的研究进展

阻抗法作为微生物快速检测方法,可用于食品中菌落总数、大肠菌群、霉菌、酵母等常规微生物的快速检测;随着研究的深入,其在食品病原菌快速检测中也大有前景。综述了传统阻抗微生物检测的发展历程及阻抗法最新研究方向,旨在为今后阻抗法快速检测食品中微生物的研究奠定基础。     

推动我国人造板生产企业成本上升的因素分析

2008年不断走高的物价水平将推动人造板生产企业的成本大幅上升,高成本时代的来临,对于资源依赖型的人造板生产企业成本和利润将产生重大影响.本文详细分析了推动人造板生产企业成本上升的主要因素,为人造板生产企业应对高成本时代的挑战提供参考.     

Changes in major proteins in the embryonic capsule during immobilization (fixation) of the conceptus in the third week of pregnancy in the mare

During the third week of pregnancy, the equine conceptus is enclosed within a capsule, the glycan composition of which changes at around day 16 (ovulation = day 0) when the conceptus becomes immobilized (fixed) in the uterine lumen. Our objective was to characterize the process of fixation by identifying changes in major capsule-associated proteins. Individual equine conceptuses (n = 55) were collected transcervically by uterine lavage between days 13.5 and 26.5. Major proteins extracted from capsules were compared with those in fluids from the uterus and yolk sac by SDS-PAGE. Until day 14, a major capsule-associated protein that migrated at approximately 10 kDa was identified by N-terminal sequencing as equine beta2 microglobulin (beta2M). During fixation, beta2M in the capsule underwent limited proteolysis to an approximately 8 kDa form lacking nine amino acids from the N terminus, and was subsequently degraded. Expression of beta2M mRNA was detected in the yolk-sac wall tissues and endometrium between days 13.5 and 17.5. During this period, beta2M in the capsule was evidently not part of a complex with major histocompatibility complex class 1 heavy alpha chain bands because these were undetectable in the capsule and uterine lavage. Uterocalin (p19) was detected in uterine lavage and capsule throughout fixation, but in yolk-sac fluid only before fixation. These studies indicate that intact beta2M is a major protein associated with the embryonic capsule before fixation, after which it undergoes limited proteolysis to a truncated approximately 8 kDa form that remains in the capsule after the conceptus is immobilized.