A machine tool is provided with: a rotating table apparatus that has a table for holding a workpiece, and that rotates the table based on a drive force that has been input; a processing area for processing the workpiece, the rotating table apparatus being carried into and out from the processing area; and a drive source for inputting the drive force when connected to the rotating table apparatus, the drive source being provided in the processing area such that the drive source can be disconnected from the rotating table apparatus.
The invention discloses a synchronous denitrification and dephosphorization sewage treatment device for an immobilized microorganism CASS (cyclic activated sludgesystem). The synchronous denitrification and dephosphorization sewage treatment device comprises a pond. A water inlet tube is arranged at one end of the pond, a water outlet tube is arranged at the other end of the pond, a hollow gridding reaction box is disposed in the pond, immobilized microorganism carriers are arranged in the hollow gridding reaction box, and an aeration device is arranged at the bottom of the pond. The synchronous denitrification and dephosphorization sewage treatment device aims to overcome shortcomings in the prior art, is simple in structure, and is efficient and stable.