共查询到20条相似文献,搜索用时 125 毫秒
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介绍了超滤技术在中原大化集团有限责任公司三聚氰胺生产中的应用,比较了两种三聚氰胺工艺废水处理方式的优缺点,对超滤在废水处理过程中出现的问题进行了分析,并提出相应的解决方法。超滤工艺不仅使得OAT悬浮液得到回收,而且大大减少了劳动强度,使工艺废水完全回收并循环利用。 相似文献
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膜技术作为一种新型分离技术,在水处理领域得到了广泛的应用。文章综述了电渗析、液膜、反渗透、纳滤、沉淀-微滤、胶束增强超滤和聚合物强化超滤等各种膜分离技术的分离原理、特点,在重金属废水处理中的应用以及目前存在的问题。最后展望了膜技术在重金属废水处理领域的应用前景。 相似文献
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废水处理、防止水污染的问题越来越受到人们的重视。我国化工企业在生产过程中面临着最重要的一个问题就是关于废水的处理。而超滤技术是一种非常实用的新型废水处理技术,具有操作简单,处理效率高,并且节约能源等优点,在化工企业的废水处理中被广泛的应用。针对超滤在化工企业废水中的应用和改进展开了详细的阐述。 相似文献
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超滤技术在三聚氰胺生产工艺中的应用 总被引:2,自引:0,他引:2
介绍超滤技术在三聚氰胺废水处理工艺中的应用优势,分析运行中出现的常见问题,提出相应的处理措施。应用超滤技术处理三聚氰胺废水减轻了劳动强度、降低了生产成本,比内置滤叶式过滤器有明显的优势。 相似文献
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罗益锋 《高科技纤维与应用》2013,(5):1-7
介绍了国内外用于人工肾的中空纤维透析膜、用于废水处理的微滤、超滤中空纤维及膜生物反应器(MBR)、用于海水淡化的中空纤维反渗透膜、用于气体分离及有机物代精馏的中空纤维膜、用于双亲和性吸附蛋白质的固定双配合剂多微孔中空纤维膜、用于回收海水资源的微滤和纳滤膜、用于脱氧核糖核酸链(DNA)切片的内含亲水性聚合物的中空纤维膜以及新型电池隔膜. 相似文献
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Conventional water reclamation processes, such as membrane bioreactors, are not always effective in removal of pharmaceuticals and personal care products (PPCPs), endocrine disrupting chemicals (EDCs) and/or N-nitrosodimethylamine (NDMA), even with the reverse osmosis (RO) membrane process. A study was conducted, at a NEWater factory in Singapore, to compare a conventional ultrafiltration (UF) membrane /RO treatment process with a treatment train having the HiPOx unit, an advanced oxidation process (AOP), which was installed between the UF and the RO unit operations. By incorporating the HiPOx into the UF/RO treatment process, following results were observed; 1) increased removal of PPCPs, EDCs and NDMA, 2) improvement in ultraviolet transmission (UVT) of the RO permeate, 3) enhanced removal of TOC and color, and increased UVT of the RO brine, 4) suppression of the increase in the RO transmembrane pressure by organic fouling. 相似文献
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超滤和反渗透联用的海岛饮用水处理示范装置 总被引:1,自引:0,他引:1
针对某些海岛山塘水库含盐量不断变化的水质特点,开发超滤和反渗透联用的海岛淡水净化/咸水淡化一体化装置。结果表明,对于电导率约580μS.cm-1,浊度约20 NTU,CODMn约5.9 mg.L-1的原水,当超滤和反渗透产水比为1:1时,超滤产水电导率基本不变,浊度约0.1 NTU,CODMn降低约40%,混合产水电导率接近于原水的一半,浊度约0.04 NTU,CODMn约1.7 mg.L-1。此外,无论原水电导率如何变化,均可通过调节产水比使最终产水达到生活饮用水卫生标准。介绍了工艺流程、运行情况,并对运行数据进行分析。 相似文献
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The experimental results on advanced treatment of secondary sewage effluent by ultrafiltration (UF) and reverse osmosis (RO) are presented in this paper, particularly focused on pretreatment system, operating condition, membrane cleaning system, and product water quality. 相似文献
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T. Venkatesh 《分离科学与技术》2017,52(14):2262-2273
The membrane-based grey water treatment for grey water reuse and surfactant recovery is presented in this research paper. Grey water from washing machine discharges having turbidity and used surfactant was processed through the polymeric ultrafiltration (UF) membrane to remove the turbidity. The UF treated grey water is further purified by reverse osmosis (RO) membrane for surfactant recovery and water reuse. The surfactant trapped inside the RO spiral wound membrane module is recovered through various membrane physical regeneration techniques such as backwashing, simultaneous backwash–back-flush and ozone back-flush. Among this, backwash–back-flush is found to be effective process for surfactant recovery. The methodology for optimising surfactant recovery is captured by studying effect of various operating parameters such as feed detergent concentration, backwash pressure, backwash temperature and back-flush flow rate. By implementing optimal process conditions, the integrated UF and RO membrane process is able to produce 300 L of reusable pure water and 80 L of concentrated detergent solution and 20 L of turbid water while treating 400 L of grey water discharges. Maximum surfactant recovery of 82% is obtained while treating grey water which consists of 720 ppm of total dissolved solids (detergent) and 45 ppm of surfactant. The extent of UF and RO membrane fouling is determined by measuring the pure water flux before and after the grey water treatment. The membrane performance is found to be stable when membrane is regenerated by backwash–back-flush technique for RO and gravity backwash for UF membrane. 相似文献