共查询到17条相似文献，搜索用时 140 毫秒
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从膜自身的结构特性、膜系统运行的条件以及进水水质等方面,对反渗透效能具有影响作用的因素进行分析,找出具体的解决办法和适当的操作条件,使其在使用过程中增强反渗透膜的抗污染性、延长使用寿命、降低清洗的次数。 相似文献
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随着反渗透膜法水处理技术的逐渐普及,膜污染问题也日益受到重视,本文主要探讨预处理为传统砂滤与碳滤器的反渗透系统受到活性炭颗粒严重污染时的清洗方法,以期能帮助受此困扰的生产企业解决该问题.通过实践表明,化学清洗结合气水擦洗技术具有可靠的清洗效果. 相似文献
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通过浙江大学西溪校区东一教学楼改造的雨水收集工程实践,分析了本地的气象资料、回用水使用与降水时段调节等,将房间空调器凝结水与饮用水反渗透浓水予以收集归入整个雨水收集系统,用于教学楼周围的绿化浇灌与景观水的补水.通过计算,教学楼夏季空调器凝结水量约为3.48 m3/d,每日饮用水反渗透浓水的水量可达到198~396 L.在气温较高的夏季能有效地补充因大量蒸发导致绿化浇灌及景观补水不足的缺陷,同时在降雨量较少的冬季也能一定程度上进行添补.雨水与冷凝水以及反渗透浓水一同收集大大提高了整个收集系统的经济性.项目实测数据验证了系统的经济合理性. 相似文献
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通过对反渗透后接电去离子过程的实验研究,考察了原水电导率、膜堆电流等因素对EDI产水水质的影响,结果表明：降低原水电导率和浓水流量,适当提高EDI原水的温度和膜堆的操作电流,都可以提高产水水质． 相似文献
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设计一个反渗透水处理工程涉及到工艺流程的安排和大量的计算,而采用计算机辅助设计技术来进行反渗透水处理工程的设计,将提高工程设计工作效率和设计质量。ROCADS抽取反渗透膜的共性,建立其性能数据库及相关模型,提供开放式的数据接口,采用面向对象编程技术,并通过数据比较验证系统的运行结果有效性。 相似文献
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当前世界处在“能源危机”日益紧迫的关头,空调建筑节能特别是建筑中的空调系统节能已成为节能领域中的一个重点和热点。中央空调水系统的清洗能降低空调运行的能耗,提高系统的性能和运行效率。本文主要分析了中央空调水系统污染的情况和清洗的必要性。 相似文献
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李静 《邢台职业技术学院学报》2003,20(5):62-65
本介绍了反渗透技术在热电厂锅炉补给水处理系统中的应用，通过技术比较和经济比较得出了含盐量较高的热电厂锅炉补给水处理的最佳方案为反渗透加混床。 相似文献
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Ultrafiltration (UF) technique is prospective asalternative for conventional processes such as coagula-tion, flocculation, sedimentation and/or flotation,rapid and slowsand filtration[1]. Recentdevelopmentsin reducing energy consumption by (semi) dead-endfiltration and prevention of membrane fouling by back-washing (combined with chemicals), make UF moreand more an interestingoption forthe treatmentof sur-face water on a large scale[2]. At present, UF full-scale applications are evenlyspread… 相似文献
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Sudhakar M. Rao 《Resonance》2011,16(12):1333-1336
Osmosis is a phenomenon which regulates many biological functions in plants and animals. That the plants stand upright, or
the water reaches the tip of every leaf of a plant is due to osmotic pressure. The fact that we cannot survive by drinking
seawater is also linked to this same phenomenon. J H van’ t Hoff showed in 1886 that osmotic pressure is related to concentration
and temperature of the solution by a law that is similar to the gas law. An understanding of this phenomenon paved the way
not only in explaining the biological functions which depend on osmosis, but also in creating conditions for reversing it
known as ‘reverse osmosis’. Reverse osmosis has many applications, one of which is desalination of seawater. The inaugural
Nobel Prize in Chemistry was awarded in 1901 to van’ t Hoff for his seminal work in this area. The present article explains
the principle of osmosis and reverse osmosis. 相似文献
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Sudhakar M Rao 《Resonance》2007,12(5):37-40
Osmosis is a phenomenon which regulates many biological functions in plants and animals. That the plants stand upright, or
the water reaches the tip of every leaf of a plant is due to osmotic pressure. The fact that we cannot survive by drinking
seawater is also linked to this same phenomenon. J H van’t Hoff showed in 1886 that osmotic pressure is related to concentration
and temperature of the solution by a law that is similar to the gas law. An understanding of this phenomenon paved the way
not only in explaining the biological functions which depend on osmosis, but also in creating conditions for reversing it
known as ‘reverse osmosis’. Reverse osmosis has many applications, one of which is desalination of seawater. The inaugural
Nobel Prize in Chemistry was awarded in 1901 to van’t Hoff for his seminal work in this area. The present article explains
the principle of osmosis and reverse osmosis. 相似文献
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针对目前牲畜圈舍养殖环境卫生差、管理粗放、影响牲畜养殖效益的问题,对牲畜圈舍进行技术改造,设计了一套牲畜圈舍自动控制系统。将S7-200PLC作为系统控制的核心,通过温度传感器对环境温度进行采集和转换,采用MCGS组态软件设计控制界面,对温度信息进行实时监测,并实现牲畜圈舍粪便的自动清扫、温度自动调整、自动喂水排水等控制功能。通过实验室制作模型进行了模拟运行,此系统操作简便、可靠性高,能够实现对牲畜圈舍的自动化管理。 相似文献
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简述了膜分离技术的原理、装置和应用现状，介绍了反渗透、纳滤、超滤和徽滤技术的研究进展极其在染料生产中的应用。 相似文献
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陈频 《金陵科技学院学报(社会科学版)》2003,18(1):41-44
污水回用是解决城市和工业用水短缺的有效途径。本文结合回用目的和国内外实际应用例子对污水再生工艺流程作了简要介绍 ,并从混凝、化学除磷和脱氮、沉淀、过滤、活性炭吸附和反渗透等几个方面 ,对污水深度处理和方法作了简述 相似文献