Prompt film cleaning alarm device

The utility model relates to an alarm device capable of prompting membrane cleaning. The sewage treatment device comprises a sewage pool and an MBR membrane assembly arranged in the sewage pool, the outlet end of the MBR membrane assembly is connected with a water production pump through a pipeline, a water outlet pipe is arranged at the outlet end of the water production pump, a sensing device used for detecting vacuum in the pipeline is arranged on the pipeline, and a remote transmission device used for transmitting data is arranged on the water outlet pipe. According to the warning device capable of prompting membrane cleaning, the problem that the online cleaning time is difficult to determine is solved; the conditions that the service life of the MBR membrane is shortened due to the fact that cleaning is too frequent, and the MBR membrane is seriously polluted and blocked due to the fact that cleaning is too little or not timely can be easily caused, the online cleaning time of the MBR membrane can be ac