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采用石灰澄清软化-过滤-树脂软化-高效反渗透组合工艺对市政污水厂出水进行深度处理,出水回用作循环冷却水系统的补水及锅炉补给水深度脱盐系统水源。工程实践表明,经该工艺处理后,反渗透系统的出水水质为:ρ(CODCr)<10 mg/L,电导率<64μS/cm,浊度<0.1 NTU,不仅达到了设计出水水质要求,而且稳定达到循环冷却系统及锅炉补给水深度脱盐系统补充水的水质要求,系统实现了长期、稳定、经济地运行。由此可见,该工艺是一种较理想的市政污水回用技术。 相似文献
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为满足包钢薄板厂连铸连轧生产线和二炼钢对水源水质量的要求,采用常规处理-活性炭过滤预处理-一级反渗透系统-二级反渗透系统这一新型水处理技术,以黄河新水为原水,经运行过程的改进完善,处理出水能够满足水质水量的使用要求,工艺系统实现了安全稳定高效的运行效果,操作维护方便. 相似文献
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印刷电路板生产废水的综合治理及废水回用 总被引:5,自引:1,他引:4
对某印刷电路板生产废水采用分质预处理-混凝沉淀-机械过滤工艺处理,结果表明,系统出水达到《污水综合排放标准》(GB 8978-1996)一级标准,同时对出水采用反渗透装置处理后达到初级回用水的水质要求. 相似文献
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由于原水水质变差,仅经过简单的物理过滤,其水质无法满足水处理系统中超滤、反渗透等装置的要求。为此,采用将沉降反应、斜管重力沉降、无阀过滤三部分有效结合的一体化净水装置对原水进行深度预处理,其出水水质可满足水处理系统的生产要求,脱盐水产量明显提高,间接降低了脱盐水的制取成本。 相似文献
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针对钢铁企业综合废水特点及回用水水质要求,采用高效混凝沉淀(带石灰、碳酸钠软化系统)-MBBR生化-过滤预处理和超滤-反渗透双膜法深度处理的组合工艺,处理某钢铁厂全厂综合废水。工程运行结果表明,该工艺处理效果理想,各项运行指标良好,其中预处理出水ρ(CODCr)≤30 mg/L,ρ(SS)5 mg/L,满足工业新水要求;深度处理出水硬度≤0.03 mmol/L,满足软化水要求。 相似文献
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安阳市西区污水处理厂(一期)项目为钢铁企业污水回用工程,预处理采用格栅-调节池-高密度沉淀池-V型滤池工艺,深度处理采用多介质过滤器-反渗透工艺。预处理出水回用作全厂循环水系统补水,深度处理出水回用作全厂循环水系统补充软水。详细介绍了该工程的设计参数、运行效果及运行中出现的问题,并针对运行中的主要问题提出了改进措施。 相似文献
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Noka Prihasto 《Desalination》2009,249(1):308-316
A good quality pre-treatment process is instrumental to the successful operation of a seawater reverse osmosis (SWRO) plant. The compounds that are susceptible to foul the reverse osmosis (RO) membranes are inorganic suspended solids, sand, oil, clays, bacteria, and dissolved organic matters. In order to prevent the fouling, a pre-treatment of the raw water needs to be conducted. The pre-treatment technologies to prevent membrane fouling and to extend the lifetime of the RO membrane are commonly grouped into two categories, conventional and non-conventional. Both of these treatments are currently applied in SWRO plants in the world. The pre-treatment system applied is highly site specific and depending on the type of the feed water. This paper reviews the recent representative researches that are related to SWRO antifouling strategies and answers the most crucial questions about design and operating parameters of SWRO and its pre-treatment process. Also the economic evaluation of the SWRO system in regards to antifouling strategies' experience is discussed. 相似文献
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超滤膜能够对胶体、大分子有机物、细菌等进行有效截留,其出水可完全满足反渗透系统的要求。超滤装置实际产水量同进水压力、水温(水的粘度)、膜污堵程度(跨膜压差TMP)、进水水质(悬浮物、有机物、微生物、浊度等)、充水排气状况等因素有关。文章研究了操作压力、跨膜压差、进水温度和进水水质对产水量的影响。 相似文献
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反渗透作为水处理领域的一种高新除盐技术应用日益广泛。如何防止膜元件的污染及污染后的清洗是当前反渗透技术应用中的一个难点。本文结合长铝公司 40 0m3 /h反渗透系统的运行和清洗经验 ,就该问题进行一些探讨 相似文献
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The formation of mineral scale deposits on membranes is a pervasive and expensive problem for the water treatment industry. A series of experiments run on a laboratory-scale reverse osmosis membrane system examined the fouling of membranes when the feed water was spiked with organic and inorganic foulants. Alginic acid was used as the organic foulant and silica was used as the inorganic foulant. Studies involving interactions of these two foulants have not previously been reported in literature. Experiments were run with each foulant individually to characterize fouling at different velocities and pressures. Experiments were then run using both foulants together to characterize the synergistic effects on membrane fouling. One set of experiments with both foulants demonstrated that alginic acid inhibits silica fouling on reverse osmosis membranes. Further experiments indicated that alginic acid added after silica fouling had already occurred was able to remove silica scale from the membrane and restore permeate flux. 相似文献
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This paper describes the experience of 19 months operation of a 16 m3/d reverse osmosis pilot plant operating under practical conditions on a highly polluted source (Rhine river). The main problem is the flux decline due to membrane fouling. The results represent the effect of parameters such as feed water quality and pretreatment, temperature, brine velocity and membrane quality. Using simple cleaning techniques, an essential constant production rate could be maintained during the 19 month test period, and membrane compaction was found to be negligible. 相似文献