Reactor for removing heavy metals in leachate and preventing scaling

The invention discloses a leachate heavy metal removal and anti-scaling reactor which comprises a mixed precipitator and an anaerobic reactor which are communicated with each other, the mixed precipitator is communicated with a leachate conveying pipeline, the upper end of the mixed precipitator is connected with an overflow water inlet pipe, and the lower end of the mixed precipitator is connected with an overflow water outlet pipe. One end of the overflow water inlet pipe is communicated with an inner cavity of the mixing precipitator, the other end of the overflow water inlet pipe extends into the bottom of the anaerobic reactor, and a purified biogas output pipe is arranged at the top end of the mixing precipitator; and the anaerobic reactor is provided with a biogas pipeline and a reflux pipeline. According to the reactor for removing heavy metals in leachate and preventing scaling, heavy metals and calcium and magnesium ions are precipitated in a specified area, and methane is purified at the same time,