MEMBRANE FILTRATION TREATMENT SYSTEM

PROBLEM TO BE SOLVED: To adsorb and remove soluble components or a small amount of harmful substances while preventing clogging of a membrane by separating or collecting granular activated carbon or the like at a primary stage in a membrane filtration apparatus.SOLUTION: A membrane filtration treatment system includes: a raw water receiving well 2 for storing raw water taken from a water source; an activated carbon addition unit 8 for feeding activated carbon to the raw water receiving well; a solid-liquid separation device 3 for removing the activated carbon contained in the raw water to be processed from the water; a flocculating agent addition unit 9 for feeding a flocculating agent; a flocculation basin 5 for forming a floc; and a membrane filtration device 6 for separating irresolvable components and the water. The system is characterized in that the solid-liquid separation device is provided at a later stage of the raw water receiving well.