Flocculoreaction device

The utility model provides a flocculoreaction device consisting of a reaction tank and a clapboard arranged in the reaction tank, wherein the clapboard is provided with a plurality of through holes; the cross sectional area at the middle of the through hole is less or greater than that of one end of the through hole. The utility model further provides another flocculoreaction device consisting of a reaction tank, a first supporting rod, a second supporting rod and a plurality of converging-diverging tubes, wherein the first supporting rod and the second supporting rod are positioned at the upper part and the lower part of the reaction tank respectively and form a plane vertical to the flow direction; and the converging-diverging tubes are fixed in the plane. The flocculoreaction device is simple in structure, lower in cost, small in occupied space, and better in treatment effect when used in water treatment.