Coagulation-ultrafiltration system for river water treatment
Coagulation-ultrafiltration system for river water treatment
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DOI：
10.1016/j.desal.2007.11.072
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发表时间：
2009-05-15
期刊：
影响因子：
9.9
通讯作者：
Bodzek, Michal
中科院分区：
文献类型：
--
作者：
Konieczny, Krystyna;Sakol, Dorota;Bodzek, Michal
采用三种不同的混凝剂，即FeCl_3、Fe-2（SO_4）（3）和Al-2（SO_4）（3），研究了“在线”混凝-超滤组合工艺。混凝剂的投加量分别为2.4 mg Fe/dm（3）、2.8 mg Fe/dm（3）和2.9 mg Al/dm（3）。使用察尔纳普热姆萨河（西里西亚地区，波兰）的地表水前缘作为原水。采用聚醚砜毛细管膜作为超滤膜组件。结果表明，混凝剂的“在线”应用有助于提高水质，因为有机物的去除率在不断增长。统计数据也证明，混凝剂的正确选择对水中有机物的去除程度具有重要意义。当使用铝混凝剂时，该过程的效率最高。此外，已经表明，使用最合适的混凝剂的“在线”混凝和超滤的应用限制了膜的污染，使得沉积在膜上的污染物可以很容易地用去离子水去除。
The "in-line" coagulation-ultrafiltration hybrid process has been investigated using three different coagulants, viz. FeCl3, Fe-2(SO4)(3) and Al-2(SO4)(3). The coagulants were dosed in the amounts of 2.4 mg Fe/dm(3), 2.8 mg Fe/dm(3) and 2.9 mg Al/dm(3), respectively. Surface water front the Czarna Przemsza river (Silesia region, Poland) was used as raw water. The ultrafiltration membrane module with capillary polyethersulphone membranes was applied. It has been shown that the application of coagulant "in-line" contributes to the improvement of the quality of water as a result of growth of the removal of organic matter.It has also been statistically proven that the proper choice of the coagulant is of significant importance for the degree of removal of organic matter from the water. The highest efficiency of the process was achieved when the aluminum coagulant was used.Furthermore, it has been shown that the application of "in-line" coagulation and ultrafiltration with the most proper coagulant restricts the fouling of the membranes, so that contaminations deposited on the membrane can easily be removed using deionized water.