Resourceful treatment method of livestock and poultry breeding wastewater

The invention relates to a resourceful treatment method of livestock and poultry breeding wastewater. The method comprises the following steps: (1) using dried and clean excrement to collect faeces of a livestock and poultry farm, and carrying out solid-liquid separation to obtain solid excrement and wastewater; (2) enabling the wastewater obtained in the step (1) to enter a special cone-shaped reaction kettle through a sewage draining passage, then adding calcium chloroaluminate hydrate into the special cone-shaped reaction kettle for carrying out absorption treatment, and stirring for 15-30min; after stirring is finished, carrying out natural sedimentation and solid-liquid separation so as to obtain solid residue and treated water; (3) sending the solid excrement obtained in the step (1) and the solid residue obtained in the step (2) into a special waste water treatment filter press for carrying out filter pressing so as to obtain solid and liquid, drying the solid subjected to the filter pressing in the ai