Slurry circulating purification system for pile group foundation

The utility model discloses a pile group foundation slurry circulation purification system which comprises S groups of slurry circulation systems and a slurry pool platform, m slurry pools and m sedimentation pools of each group of slurry circulation system are arranged on the slurry pool platform and are communicated in a one-to-one correspondence mode, n steel casings are divided into a plurality of groups, each group of steel casings are sequentially connected in series through series connection pipes, then adjacent groups of steel casings are connected in parallel through series connection pipes to form a closed loop, m steel casings close to the mud pits are communicated with m mud pits in a one-to-one correspondence manner through series connection pipes, m drilling machines respectively correspond to the m steel casings for construction, and each drilling machine is provided with a mud separator and an external hose. Drilling slag and mud generated in the drilling process of the m drilling machines are