Faculty of Civil Engineering, Architecture and Environmental Engineering, Institute of Environmental Engineering, University of Zielona Góra, 15 Prof. Z. Szafrana St, 65-516 Zielona Góra, Poland.
Molecules. 2021 Mar 4;26(5):1367. doi: 10.3390/molecules26051367.
In topic-related literature pertaining to the treatment of water, there is a lack of information on the influence of iron ions in highly basic polyaluminum chlorides on the efficiency of purifying water with increased contents of organic substance. The aim of this work was to determine the changes in the content of organic substances as well as iron compounds in water intended for human consumption following unit treatment processes with particular attention paid to the coagulation process. As coagulants, polyaluminium chloride PAXXL10 with an alkalinity of 70%, as well as polyaluminium chloride PAXXL1911 with an alkalinity of 85% the composition of which also contained iron, were tested. The analysis of the obtained results showed that iron compounds and organic substances were removed to the greatest extent by the coagulation process, which also had a significant influence on the final efficiency of water treatment. The effectiveness of water treatment was determined by the type of tested polyaluminum chloride, which influenced the formation of iron-organic complexes. The reason behind the formation of colored iron-organic complexes during coagulation using PAXXL1911 coagulant was the high pH (approx. 8), at which the functional groups of organic substances, due to their dissociation, are more reactive in relation to iron, and possibly the fact of introducing additional iron ions along with the coagulant.
在与水处理相关的主题文献中，关于高铁离子的高碱性聚合氯化铝对高有机物含量水的净化效率的影响的信息较少。本工作的目的是确定经过特定的单元处理过程（特别是混凝过程）后，饮用水中有机物和铁化合物含量的变化。作为混凝剂，我们测试了碱度为 70%的 PAXXL10 聚合氯化铝和碱度为 85%的同时还含有铁的 PAXXL1911 聚合氯化铝。对获得的结果进行分析后表明，混凝过程对铁化合物和有机物的去除程度最大，同时对水处理的最终效率也有显著影响。水处理的效果取决于所测试的聚合氯化铝的类型，因为它会影响铁-有机复合物的形成。在使用 PAXXL1911 混凝剂进行混凝时形成有色铁-有机复合物的原因是高 pH 值（约 8），在该 pH 值下，由于其离解，有机物的官能团与铁的反应性更高，并且可能是由于与混凝剂一起引入了额外的铁离子。
