The invention discloses an ultrasonic-assisted membrane
distilled water treatment system and method. The
system comprises a
raw water tank, a heater, a water feeding pump, an ultrasonic-assisted
membrane distillation tank, a membrane
assembly, a cooling water
circulating pump, a cooler and a cooling water tank, wherein the membrane
assembly is arranged in the ultrasonic-assisted
membrane distillation tank, and ultrasonic generators are arranged around the inner wall of the ultrasonic-assisted
membrane distillation tank; the
raw water tank, the heater, the water feeding pump and the ultrasonic-assisted membrane
distillation tank are sequentially communicated, and an outlet of the ultrasonic-assisted membrane
distillation tank is communicated with the
raw water tank to form a circulation loop; the cooling water tank, the cooler, the cooling water
circulating pump and the membrane
assembly are connected; an outlet of the membrane assembly communicates with the cooling water tank to form acirculating loop. The ultrasonic generators are additionally arranged in the
working environment of the membrane assembly, so that the
mass transfer effect of the
membrane surface is enhanced, the
concentration polarization phenomenon is relieved, the
permeation flux of the membrane is improved, the surface of the membrane assembly can be cleaned, the
pollution of the membrane assembly is relieved, the requirement of
wastewater desalination can be fully met, and
produced water with relatively high quality is obtained.