膜过滤前的混凝被广泛认为是一种标准的混合工艺 因为它允许使用质量较差的水源水，污染较少。但必须做更多 了解混凝条件对膜性能的影响 系统，尤其是在浸入式膜系统中。本研究的目的是 阐明混凝预处理与膜性能和性能之间的关系 探讨混凝预处理和微滤对GAC后处理的影响。 试验是在中试规模下进行的，使用的是一个500 m3/天的浸没式装置 微滤器。从汉江收集的原水用作给水和聚铝 氯化物被用作混凝剂。使用EBCT为15分钟的颗粒活性炭作为催化剂 膜系统的后处理，以控制产品水中的味道和气味。结果 结果表明，混凝条件对膜污染有显著影响。 凝血预处理对稳定跨膜压（TMP）至关重要 当给水浊度较高时。随着更多的有机物被 凝固，膜污染更少。另一方面，TMP对饲料不敏感 混凝沉淀后的浊度。看来不仅是颗粒的去除 而有机物的絮凝特性也会影响膜 性能和预处理效率。根据实验结果，提出了一种利用 提出了控制混凝过程的污垢指数。结果发现，凝血作用 通过将溶解有机物减少至60%，延长GAC后处理的使用寿命。包括11个参考文献、表格、图表。

Coagulation prior to membrane filtration is widely accepted as a standard hybrid process because it allows poorer quality source waters to be used with less fouling. But more must be understood about the effect of coagulation conditions on the performance of membrane system, especially in submerged membrane system. The objectives of this research were to elucidate the relation between coagulation pretreatment and membrane performance and explore the effect of coagulation pretreatment and microfiltration on GAC post-treatment. Experiments were conducted in pilot scale using a 500 m3/day plant with submerged microfilters. Raw water collected from Han River was used as feed water and ploy aluminium chloride was used as coagulants. Granular activated carbon at EBCT of 15 min was used as post- treatment of membrane system to control taste and odor in product water. The results indicate that the coagulation condition had a significant impact on membrane fouling. Coagulation pretreatment was essential to stabilize transmembrane pressure (TMP) especially when the turbidity of feed water was high. As more organic matter was removed by coagulation, membranes fouled less. On the other hand, TMP was not sensitive to feed turbidity after coagulation and sedimentation. It appears that not only the removal of particles and organics but also the characteristics of coagulation flocs affect the membrane performance and pretreatment efficiency. Based on the experimental results, a technique using fouling index was suggested to control coagulation process. Coagulation was found to prolong the lifetime of GAC post-treatment by reducing dissolved organic matters up to 60 %. Includes 11 references, table, figures.