Solid-liquid mixture separation and liquid storage integrated tank and application method thereof

The invention discloses a solid-liquid mixture separation and liquid storage integrated tank and an application method thereof. The solid-liquid mixture separation and liquid storage integrated tank is characterized in that a rock debris collection and separation tank is provided with a plurality of inclined side walls, and one side wall is provided with a filter hole; the upper end of a first-stage filtrate collecting tank is provided with a tank opening corresponding to the filter hole, and the tank opening of the first-stage filtrate collecting tank is connected to the position, corresponding to the periphery of the filter hole, of the lower end of the side wall of the rock debris collection and separation tank; and a second-stage filtrate collecting tank is integrally connected to oneside of the first-stage filtrate collecting tank, and an overflow port I communicated with the second-stage filtrate collecting tank is formed in the side wall, close to the highest end of the tank opening, of the first-stage