The invention discloses a
system for ecological purification of a
water body on the basis of a nanometer
coupling material. The
system comprises an exogenous interception unit, an endogenous
control unit, an artificial purification unit and an ecological restoration unit, wherein the exogenous intercepting unit comprises an ecological intercepting
ditch and a slope protection ecological intercepting belt which are respectively positioned at two sides of a river channel; the ecological intercepting
ditch comprises a plurality of intercepting ditches and intercepting pools communicating with theintercepting ditches; gravel and a
water treatment slow-
release agent are laid on the bottom walls of the intercepting ditches; porous
ceramic particles are laid on the bottom walls of the intercepting pools; the slope protection ecological interception belt comprises a plurality of
moisture absorption ecological bags which are stacked layer by layer along the slope surface and are mutually locked; a
moisture absorption material fills each
moisture absorption ecological bag; the artificial purification unit comprises an air supply device and an
aeration device; the air supply device comprisesa fan and a pipeline; the
aeration device comprises a membrane frame and
hollow fiber membrane assemblies fixedly arranged on the membrane frame; the membrane frame is of a hollow structure; one endof the membrane frame is connected with the pipeline; and the membrane frame is used for conveying gas to the
hollow fiber membrane assemblies. The
system provided by the invention constructs a complete ecological chain to reinforce the self-purification capacity of
river water and stabilize the effect of water purification.