An improved solids interceptor and methods of using the same. The solids interceptor includes a tank having an inlet and at least one outlet, and an access opening on an upper end of the tank. A perforated basket is removably received within the tank via the access opening. When the basket is installed within the tank, wastewater entering the tank via the inlet flows into the basket, with the solid waste being collected in the basket and the liquid waste flowing out of the basket via the perforated screen. The basket and tank include an interlocking flange assembly that automatically axially aligns a basket inlet with an inlet pipe simply by inserting the basket into the tank. The basket is removable from the tank to easily clean out and discard solid waste accumulated in the basket.