Denitrification filter assembly

The utility model relates to a denitrification filtering assembly which comprises a hollow assembly main body, and an inner cavity of the assembly main body is a filtering cavity; a grid surface layer, a grid interlayer and a grid bottom layer are sequentially arranged in the filtering cavity from top to bottom; a plurality of filter screens are arranged in the filter layer between the grid surface layer and the grid interlayer; a plurality of filter lines are connected between the upper filter surface and the lower filter surface of the filter screen; a filtering channel communicated with thegrid surface layer and the grid interlayer is formed between the filtering lines; a packing layer is arranged between the grid interlayer and the grid bottom layer, and a packing cavity of the packing layer is filled with filtering packing. The device has the beneficial effects that better filtration can be realized, preliminary filtration and decomposition are performed through the filler layer,and then further filtrati