MEMBRANE MODULE FOR WASTE WATER TREATMENT AND WASTE WATER TREATMENT DEVICE AND WASTE WATER TREATMENT USING THE SAME

摘要

PROBLEM TO BE SOLVED: To inhibit reduction in permeation flux, etc., by preventing foreign matter such as waste thread from clinging to the membrane module disposed in a biological treatment vessel. SOLUTION: This membrane module consisting of three stage membrane units is constructed by connecting three membrane units 11 to each other in the vertical direction and each of the membrane units 11 comprises plural hollow fiber membranes 13 provided so as to be stretched between two water collecting pipes 12 placed apart right and left from each other. The water collecting pipes 12 of the upper stage membrane unit 11 are connected to a suction pump 15 through a pipeline 14 and the lower stage membrane unit 11 is provided attachably and detachably with a foreign matter capture means 17 by using a coupler 16. At this time, an example of the foreign matter capture means 17 is a unit in which a number of pieces of a threadlike material 19 are stretched between right and left supporting plates 18 in a 10 to 200 pieces/cm3 density, or the like.