Drilling solid waste biodegradation device and collected liquid collecting and recycling method thereof

The invention provides a drilling solid waste biodegradation device and a collected liquid collecting and recycling method thereof, and relates to the field of oil and gas exploration drilling solid waste biodegradation treatment. The device comprises a biological treatment mixture layer, a clean soil layer, a vegetation layer, a degradation stacking pool, an impermeable film, a liquid collectioncollecting pipe and a liquid guide pipe. The bottom of the degradation stacking pool comprises a groove with the inclination degree of 1%, a first liquid collecting face with the inclination degree of2-3% towards the groove and a second liquid collecting face with the inclination degree of 2-3% towards the groove. And the impermeable film completely covers the degradation stacking pool. The liquid collection collecting pipe with a first through hole in the pipe wall is mounted in the groove, one end of the liquid guide pipe is connected with the liquid collection collecting pipe, and the other end is higher than the s