The utility model provides a water replenishing
system for rivers and lakes, which comprises a main runner, a microbial remediation treatment device, a floating
sewage treatment device and a
water turbine, a partition baffle is fixedly mounted on the main runner, and the
water turbine is fixedly mounted at the front end of the partition baffle. The
water turbine is used for conveying water surface floating objects and upper-layer water to the floating
sewage treatment device, one side of the microbial remediation treatment device and one side of the floating
sewage treatment device are each provided with a flowing pump, the output ends of the two flowing pumps are located on the back of the partition baffle, and a switch valve is arranged between the microbial remediation treatment device and the main flow channel. The water
turbine conveys upper-layer water and floating objects to the floating
sewage treatment device, the flow pump conveys cleaned water back to the rear portion of the main flow channel partition baffle to form circulation, sewage enters the microbial remediation treatment device, microorganisms degrade
organic matter in the filter layer, the flow pump conveys
purified water back to the main flow channel to form a
closed loop, on one hand, the water fluidity is improved, and the
water quality is improved. On the other hand, water sources are purified.