共查询到19条相似文献,搜索用时 125 毫秒
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超滤-反渗透膜组合工艺处理电厂循环排污水 总被引:7,自引:0,他引:7
本文详细介绍了北京京丰天然气燃机联合循环电厂使用超滤-反渗透膜组合工艺处理循环水排污水。循环水排污水回用系统的最大问题是反渗透膜的污染控制问题。因为循环水排污水相对水质较差,因此对预处理技术要求较高,采用超滤膜作为预处理系统,能够很好地解决这个问题。北京京丰热电厂通过长时间的工业化运行,证明了在处理回用循环水排污水过程中,超滤作为反渗透预处理系统的可行性,也积累了该工艺处理循环水排污水用于电厂循环补充水和锅炉补给水方面的应用经验. 相似文献
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为进一步节约水资源,实现水资源高效利用的目的,山东某糖业公司在其现有污水处理系统基础上,新建污水回用装置,采用多介质过滤器+浸没式超滤+反渗透组合工艺,对现有二沉池排污水进一步进行回收处理,回用水回补循环水系统。系统运行数月,运行参数稳定,出水水质能够达到《循环冷却水用再生水水质标准》(HG/T3923—2007)的要求。 相似文献
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鄂尔多斯某煤化工厂回用水处理装置主要进水水源为污水处理装置出水、循环水场排污水及脱盐水站的排污水,采用匀质池+高效澄清器+多介质过滤器+超滤及反渗透的组合处理工艺,出水用作循环水场补水。本回用水处理装置已经建成运行近1 a,运行结果表明,装置运行稳定,出水水质达到《污水再生利用工程设计规范》(GB50335—2002)中再生水用作循环冷却系统补充水的水质标准。 相似文献
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《水处理技术》2017,(4)
采用机械加速澄清池+多介质过滤器+活性炭过滤器+CM大表面积块片式陶瓷超滤膜+反渗透工艺处理化工无机废水。60d连续运行期间,CM陶瓷超滤膜产水SDI_(15)在1.1~1.6之间,浊度在0.01~0.03 NTU之间,运行压差由44 k Pa上升至67 kPa。CM陶瓷超滤膜产水水质完全满足反渗透系统进水水质要求。反渗透系统产水水质优异,完全满足GB 50335-2002中关于"再生水用作循环冷却用水的水质控制指标"的要求。与传统陶瓷膜产品相比,CM-131陶瓷膜具有更大的表面积。CM-131陶瓷超滤膜作为反渗透的预处理工艺,其安装、运行、反洗方式类同于传统中空纤维超滤膜。CM陶瓷超滤膜不存在断丝问题,孔径分布、操作压力、温度、系统回收率、耐油性、耐腐蚀性、产水SDI值、使用寿命等方面均优于中空纤维超滤膜。 相似文献
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某化工回用水处理工程废水主要由循环水排污水和经生化处理系统处理后的气化灰水、冲渣水等废水组成,针对该废水特点,本工程采用两级曝气生物滤池法(DN型BAF+DC/N型BAF)+保安过滤器+膜处理技术等工艺对其进行处理。结果表明,该工程工艺运行效果良好,处理出水水质达到设计要求,可实现回用。工程总运行费用为1.967元/m^3。 相似文献
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介绍了"预处理+超滤+反渗透"组合工艺的特点及工艺流程,该装置以循环水系统排污和塔底排污水为主要处理对象,通过对高含盐量、高碱度和硬度来水深度处理,产水达到工业回用水要求,作为循环水系统补水回收利用。 相似文献
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某不锈钢生产废水减排回用及提标工程,含氮废水经软化-生物反硝化预处理后与循环水排污水混合后,再经混凝沉淀-砂滤-超滤-反渗透组合工艺进行减排回用处理,出水达到企业内部工业用水标准后回用,而反渗透浓水经生物脱氮-电催化氧化-砂滤工艺再处理,最终使得该企业排放废水的水质水量均达到GB 13456—2012《钢铁工业水污染物排放标准》的要求。 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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《Desalination》2006,187(1-3):335-345
Field experiments are in progress for secondary wastewater upgrading for unrestricted use for irrigation and sustainable agricultural production. The integrative treatment system for the secondary effluent polishing is based on implementing in series of two main treatment stages: ultrafiltration (UF) and reverse osmosis (RO) membrane treatment. The pilot system has the capacity of around 8 m3/h. The UF effluent is used to feed the RO membrane stage. Different mixtures of UF and RO permeates are subsequently applied for drip irrigation of various agriculture crops. The field results indicate the importance of the UF component in the removal of the organic matter and the pathogens that are still contained in the secondary effluent (the secondary effluent is obtained from a waste stabilization pond treatment system). Under specific conditions, when the dissolved solids content is relatively low, the UF effluent can be applied directly for unrestricted irrigation. In the successive RO stage most nutrients are removed, allowing applying the effluent without jeopardizing the soil fertility and the aquifers. Preliminary economic assessment indicates that the extra cost for effluent polishing via the UF stage only is in the range of 8–12 US cents/m3. The extra cost for the RO stage is as well assessed at 8–12 US cents/m3. The additional treatment expenses depend to a large extent on the quality of the incoming raw secondary effluent and local requirements at the command agricultural production sites. 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
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罗益锋 《高科技纤维与应用》2011,36(1):6-10,23
简述了玄武岩纤维(BF)的发展历程,并与主要高性能纤维和玻璃纤维的综合性能对比,明确了BF的基本特性和定位,同时通过对比这些纤维的性能/价格比,进一步明确了BF的市场定位及未来的研发方向.此外,介绍了乌克兰和捷克两大学共同研发的超细玄武岩纤维(SFBF)的制备技术、工艺流程及其复合材料应用领域等.最后,提出我国今后研发... 相似文献
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海水淡化中空纤维反渗透膜需求量倍增 总被引:1,自引:0,他引:1
罗益锋 《高科技纤维与应用》2011,36(1):1-5
简述了海水淡化中空纤维反渗透(RO)膜的发展历程,并重点介绍国内外以三醋酸纤维素为代表的中空纤维膜发展情况、膜元件的结构特点和技术水平,以及它与卷式RO膜的竞争和市场增长情况.同时简要介绍海水淡化前处理用的中空纤维超滤(UF)和微滤(MF)膜的发展概况. 相似文献