Filtering assembly containing tubular and flat plate type composite membranes and preparation method of filtering assembly

The invention discloses a tubular and flat plate type composite membrane filtration assembly and a preparation method thereof, the composite membrane filtration assembly comprises a tubular filtration structure, a flat plate filtration structure and a water collection pipe, the tubular filtration structure is arranged in the flat plate filtration structure, the tubular filtration structure is connected with the flat plate filtration structure through a connection sealing member, and the flat plate filtration structure is connected with the water collection pipe. The water collecting pipe is connected with the flat filtering structure. The tubular filtering structures are arranged in the flat plate filtering structure, the two ends are sealed through the connecting sealing pieces, and the distance between the tubular filtering structures is fixed, so that a secondary filtering structure is formed. The filling density is effectively improved, redundant pipeline arrangement can be reduced, and the filtering effi