颗粒-液体分离过程中的絮体破碎可能会导致重大的操作问题，例如 减少了澄清率和过滤器运行时间。对于天然有机物（NOM）的去除，使用 以往的研究表明，常规混凝可以改善絮体的性能 当有机物与混凝剂的比例降低时。然而，这意味着增加了更高的 导致污泥产量增加的混凝剂剂量。磁离子水预处理 交换树脂（MIEX®）然后进行常规凝固可以将凝固剂剂量减少多达 80%，而不会对NOM去除水平产生负面影响。然而，MIEX®预处理的影响 降低絮凝颗粒上的混凝剂剂量尚未得到充分研究。结果有 结果表明，MIEX能够显著降低富含有机物的水中的电荷浓度。 从逻辑上讲，这种减少被认为是潜在混凝剂剂量减少的原因。它是 已知阴离子有机物的电荷必须中和，以便通过 降水 此外，本研究还表明，NOM特征对于确定絮体如何 物理性能受MIEX®预处理的影响。絮体尺寸、强度显著增加 测量了MIEX®预处理后凝结NOM的沉降速度，并与 以疏水化合物为主的水的常规混凝。亲水性处理 海水并没有显著改善絮体的物理性质。考虑到这些 结果表明，MIEX®看起来能够为选定水域设计出坚固的下游絮体颗粒， 同时，通过使用极低的混凝剂剂量来减少潜在的污泥产量。 包括38个参考文献、表格和图。

Floc breakage during particle-liquid separation can lead to significant operational problems, such as reduced clarification rates and filter run times. For natural organic matter (NOM) removal using conventional coagulation, previous research has shown that improved floc properties may be seen when the ratio of organics to coagulant is reduced. However, that implies the addition of higher coagulant doses leading to increased sludge production. Water pretreatment with a magnetic ion exchange resin (MIEX®) followed by conventional coagulation can reduce the coagulant dose by up to 80 % without negatively affecting the level of NOM removal. However, the impact of MIEX® pretreatment and reduced coagulant dose on floc particles has not yet been fully investigated. Results have shown that MIEX is able to significantly reduce the charge concentration in organic rich waters. Logically this reduction, was thought to be the reason, for the potential coagulant dose reduction. It is known that the charge of the anionic organics has to be neutralized in order to remove it effectively by precipitation. Further on it was shown in this study that NOM character was important in determining how the floc physical properties were affected by MIEX® pretreatment. A significant increase in floc size, strength and settling velocity was measured for coagulated NOM after MIEX® pretreatment, in comparison to conventional coagulation for waters dominated by hydrophobic compounds. Treatment of hydrophilic waters did not result in such significant improvement of floc physical properties. Considering these results, MIEX® looks capable of engineering robust downstream floc particles for selected waters, while also reducing potential sludge production by applying very low coagulant doses. Includes 38 references, table, figures.