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印染废水的分类、组成及性质 总被引:9,自引:1,他引:8
简述了我国印染废水现状,分析了工厂废水处理中存在的问题。根据纤维种类和染整工艺,详细列出了染整废水的主要来源,主要纤维品种常用染料和配套使用的助剂。对棉及混纺机织物、棉及混纺针织物、毛、丝绸、麻、蜡染织物等产生的印染废水水质作了总结。 相似文献
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介绍了各种印染废水处理的方法:物理化学法、化学法及生物技术法,分析了各类技术方法的机制、处理效果及其优缺点。根据印染废水特性,采用不同处理方法的组合工艺技术,可实现对印染废水的彻底处理。以生物技术法为主体,辅以物理化学处理的组合处理工艺已逐渐成为目前印染废水处理的主流工艺。 相似文献
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纺织染整工业废水污粢物回收与废水处理 总被引:7,自引:1,他引:7
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。 相似文献
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印染废水的处理方法及其研究动向 总被引:4,自引:0,他引:4
分析了印染废水处理所面临的问题,介绍了印染废水处理方法的研究动向,包括传统方法和工艺改进、高新技术的应用两个方面,并指出单一处理废水的方法已经远远不能满足需求,多种方法组合是处理印染废水的有效手段。 相似文献
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污水处理专家把印染废水比喻为难啃的硬骨头。根据印染废水的来源不同,分别介绍了水质特点及排放规律,重点介绍了现有印染废水的主要处理方法和处理工艺,给出了各工艺的流程图及处理效果。由于印染废水需水量大,结合循环经济的要求,本文简单介绍了印染废水处理回用的解决方案。 相似文献
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Figueroa-González I Quijano G Ramírez G Cruz-Guerrero A 《Journal of the science of food and agriculture》2011,91(8):1341-1348
Owing to their health benefits, probiotics and prebiotics are nowadays widely used in yogurts and fermented milks, which are leader products of functional foods worldwide. The world market for functional foods has grown rapidly in the last three decades, with an estimated size in 2003 of ca US$ 33 billion, while the European market estimation exceeded US$ 2 billion in the same year. However, the production of probiotics and prebiotics at industrial scale faces several challenges, including the search for economical and abundant raw materials for prebiotic production, the low-cost production of probiotics and the improvement of probiotic viability after storage or during the manufacturing process of the functional food. In this review, functional foods based on probiotics and prebiotics are introduced as a key biotechnological field with tremendous potential for innovation. A concise state of the art addressing the fundamentals and challenges for the development of new probiotic- and prebiotic-based foods is presented, the niches for future research being clearly identified and discussed. 相似文献
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常用消毒灭菌法及其机理与应用 总被引:3,自引:0,他引:3
介绍了采用消毒灭菌方法,有加热消毒法,紫外线辐射法和化学药剂消毒法。常用化学药剂有醛类、含氯消毒剂、醇类消毒剂以及高锰酸钾、生石灰等,阐释了消毒与灭菌两个概念的区别。 相似文献
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The objectives of the current study were to investigate the relationship between body condition score (BCS) and dairy form and changes in genetic parameters for BCS and dairy form within and across lactations and age. Body condition score and dairy form were obtained from the Holstein Association USA, Inc. Records were edited to include those cows classified between 24 and 60 mo of age and between 0 and 335 d in milk (DIM). A minimum of 20 daughters per sire and 15 cows per herd-classification visit were required. The dataset consisted of 135,178 records from 119,215 cows. Repeatability, multiple trait, and random regression models were used to analyze the data. All models included fixed effects for herd-classification visit, age within lactations 1, 2, and 3 or higher, and 5th-order polynomials for DIM. Random effects included sire and permanent environment for all models. Random regression models included age at classification nested within sire or DIM and lactation number nested within sire. Genetic variance for both BCS and dairy form was lowest in early lactation and highest in midlactation. Genetic correlations within and across lactations were high. The genetic correlation between DIM 0 in lactation 1 and DIM 305 in lactation 3 was estimated to be 0.77 for BCS and 0.60 for dairy form. The genetic correlation estimate between 30 mo of age at classification and 50 mo of age at classification was 0.94 for both dairy form and BCS. The repeatability models appeared to generate accurate evaluations for BCS or dairy form at all ages and stages of lactation. 相似文献
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A. FOSTER 《International journal of cosmetic science》1979,1(4):221-245
An historical reference is followed by a review of cosmetic colours’ regulations based on the EEC Directive with particular reference to the U.K. Cosmetic Products Regulations and their effect on formulation. Les reglementations des colorants pour cosmetiques 相似文献
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法国R.Stat公司活跃在导电纤维市场已有20年之久,但是,办公室雇员、宾馆客人、飞机乘客、在易爆炸环境中工作的人员、木材或纸浆工业操作人员、消防队员和军人,由于得益于R.Stat公司生产的导电纤维的保护,而免遭令人不舒服的电击,或者免遭火灾和爆炸的伤害,这些却无人知晓。 相似文献