Heavy metal treatment micro-filtration system

The utility model discloses a heavy metal treatment micro-filtration system, which comprises a heavy metal concentrated water pretreatment system and a pipe type micro-filtration system. The heavy metal concentrated water pretreatment system comprises a first reaction tank, a second reaction tank, a concentrated water tank and a sludge treatment system. The first reaction tank and the second reaction tank are both connected to a mixing device, and the first reaction tank is provided with a heavy metal concentrated water input end. An output end of the first reaction tank is connected to an input end of the second reaction tank, an output end of the second reaction tank is connected to an input end of the concentrated water tank which is provided with a supernate output end located at the upper portion and a sludge output end located at the lower portion, and the sludge output end is connected to the sludge treatment system. An input end of the pipe type micro-filtration system is connected to a supernate output end of a sedimentation tank, a high pressure pump is disposed on a pipeline between the concentrated water tank and the pipe type micro-filtration system, and the pipe type micro-filtration system is provided with a filtered fluid output end and a concentrated solution output end which is connected to the concentrated water tank.