Rotational flow anaerobic reactor for waste water treatment system

The invention discloses a rotational flow anaerobic reactor for a waste water treatment system. The rotational flow anaerobic reactor for the waste water treatment system comprises a reactor chamber body as well as a gas and liquid separator and a water sealing tank which are arranged above the reactor chamber body and are connected with each other; a three-dimensional rotational flow water distributing system, a first-stage three-phase separator, a backflow water collecting system, a second-grade three-phase separator and a water outlet device are arranged in the reactor chamber body from bottom to top; a gas collecting system is arranged in the reactor chamber body; the gas collecting system is connected with a gas inlet of the gas and liquid separator; a separating liquid outlet of thegas and liquid separator is connected with a separating liquid backflow pipe in the reactor chamber body; and the three-dimensional rotational flow water distributing system comprises a water inlet and water distributing devi