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liafangfan木虫 (小有名气)
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[求助]
论文中英语翻译成汉语。非常急。希望能在本星期之内翻译好。非常感谢。
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The permeate obtained by ultrafiltration had ameasurable CODvalue aswell as high salinity.Nevertheless, it is expected to have a much lower oil content, as COD values include soluble components such as small molecule acids that do not contribute to the O&G measure, regulated for off-shore disposal (29). As long as O&G limitations are met, UF may be a sufficient method for the treatment of this stream. For onshore wells, UF treatment would be a good choice for pretreatment of this streambefore using ROorNF to remove salts and small molecule contaminants. As described earlier, fouling is the limiting issue in the use ofUFmembranes for producedwater treatment.Hence, 24 h dead-end fouling tests were conducted using PW-A as the feed. Figure 1 shows the normalized flux versus time data from such experiments for each membrane. During the filtration of the produced water, the normalized flux of the PAN/PAN-g-PEOblendmembrane remainedmuch above that of the commercial PAN membrane. The drastic flux decrease immediately upon contact with the foulant, ob- served for the commercial membrane, is characteristic of adsorptive fouling. The more gradual flux decrease for the blendmembrane is typical for cake deposition (18, 30). After 24 h, the blend membrane lost 68% of its flux, whereas the commercial PAN membrane lost 92%. In fact, even though the initial PWP of the commercial PAN membrane was approximately twice that of the PAN/PAN-g-PEO blend membrane, its final flux was ∼40% lower. The total volume of solution filtered through PAN-g-PEO blendmembrane in this time period was 420mL vs 230mL for the control. Upon switching to a water feed, both membranes recovered a portion of their fluxes. The fact that the recovery was lower for the PAN/PAN-g-PEO blend membrane could be due to the formation of amore compact cake layer. After a backwash to remove the cake layer, the PAN/PAN-g-PEO membranerecovered its initial flux completely. Backwashing is a common physical cleaning method that allows for the mechanical removal of accumulated particulates not strongly adsorbed to the membrane surface. The complete recovery of the initial flux indicates that even with this complex feed, the blendmembrane resisted irreversible, adsorptive fouling, the first demonstration of such for a polymericUFmembrane, to the authors’ knowledge. Under similar conditions, the Sepro PAN-400 lost 37% of its flux irreversibly. The ability of PAN/PAN-g-PEO blend UF membranes to better maintain and recover their flux shows the distinct advantage of such membranes over a commercial PANUFmembrane of similar selectivity. |
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木虫 (正式写手)
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【答案】应助回帖
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Mally89(金币-5): 疑似机器翻译！~虫友，您之前在本版做过广告，希望不要再次见到您作出违反版规的事情！~希望理解合作！~欢迎常来！~好运！~ 2011-05-12 19:18:18
liafangfan(金币+70, 翻译EPI+1): 不是很好，好像是机器翻译的。不过也谢了哈 2011-05-13 10:59:03
Mally89(金币-5): 疑似机器翻译！~虫友，您之前在本版做过广告，希望不要再次见到您作出违反版规的事情！~希望理解合作！~欢迎常来！~好运！~ 2011-05-12 19:18:18
liafangfan(金币+70, 翻译EPI+1): 不是很好，好像是机器翻译的。不过也谢了哈 2011-05-13 10:59:03
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超滤得到的渗透已经ameasurable CODvalue以及高salinity.Nevertheless，预计 有低得多的含油量，以COD值包括 如小分子水溶性成分的含量做 无助的O＆G的措施，对离岸监管 处置（29）。只要妇产科只要符合限制，用友可能 成为这条小溪足够的治疗方法。对于 陆上油井，用友治疗将是一个很好的选择 本使用ROorNF streambefore预处理去除 盐和小分子污染物。 如前所述，结垢是在限制问题 为producedwater treatment.Hence使用ofUFmembranes， 24小时死胡同污染进行了测试，用脉宽- A作为 饲料。图1显示了随时间变化的归流 数据从每个膜实验。在 所生产的水过滤，归通量 聚丙烯腈/聚丙烯腈的G - PEOblendmembrane remainedmuch以上 该商业潘膜。激烈的通量 立即与foulant减少接触后，肥胖， 膜的商业服务，是特征 吸附污垢。逐步为更多的流量减少 blendmembrane是蛋糕沉积（18，30）的典型。后 24 h后，共混膜的通量失去了68％，而 商业潘膜失去92％。事实上，即使 该商业聚丙烯腈膜的初始工务计划是 大约两倍的丙烯腈/聚丙烯腈的G - PEO的混合 膜，其最终通量为?40％为低。总体积 通过溶液过滤泛的G - PEO的blendmembrane在 这个时期是420mL，相较于控制230mL。经 切换到进水，既恢复了膜 部分的通量。事实上，经济复苏明显降低 为泛/聚丙烯腈的G - PEO的混合膜可能是由于 爱茉莉致密的滤饼层的形成。反冲洗后 清除滤饼层，泛/聚丙烯腈的G - PEO的membranerecovered其初始通量完全。反冲洗是 常见的物理清洗方法，为使 机械清除微粒累计不强烈 吸附到膜表面。完整的恢复 初始通量表明，即使有这种复杂的饲料， 在blendmembrane抵制不可逆的，吸附污染， 这种首次演示了polymericUFmembrane， 提交人的知识。在类似的条件下， Sepro潘- 400失去了其流量的37％不可逆转的。的能力 聚丙烯腈/聚丙烯腈接枝聚氧化乙烯共混超滤膜，以更好地维护 并恢复他们的流量显示了这样明显的优势 膜过一个类似的商业PANUFmembrane 选择性。 |
2楼2011-05-12 14:30:30
