System and method for detecting oxygen utilization efficiency of MABR process

The invention discloses a system and a method for detecting oxygen utilization efficiency of an MABR process. The system comprises an MABR membrane assembly, a gas supply unit, a tail gas unit and an oxygen utilization efficiency online calculation unit, wherein one end of the MABR membrane assembly (9) is the gas supply unit, the other end of the MABR membrane assembly (9) is the tail gas unit, and the gas supply unit and the tail gas unit are both connected with the oxygen utilization efficiency online calculation unit. Compared with the prior art, the system has the advantages that (1) the real-time detection of the oxygen utilization efficiency of the MABR process can be realized without stopping the process operation and additionally adding medicaments; and (2) the oxygen content in the residual tail gas of the aeration of the MABR is detected instead of the concentration of dissolved oxygen in the reactor, so that the oxygen utilization efficiency of the MABR can be reflected more directly. 本发明公开了一种检测MA