CN-224226854-U - Landfill leachate treatment system

CN224226854UCN 224226854 UCN224226854 UCN 224226854UCN-224226854-U

Abstract

The utility model discloses a garbage leachate treatment system which comprises a sedimentation tank, a biological treatment tank, a membrane filtration tank, an aeration pipe, a first aeration assembly, a second aeration assembly and a third aeration assembly, wherein the aeration pipe extends into the sedimentation tank, the biological treatment tank and the membrane filtration tank, the first aeration assembly is arranged in the sedimentation tank, the second aeration assembly is arranged in the biological treatment tank, the third aeration assembly is arranged in the membrane filtration tank, an umbrella-shaped flow guide screen plate is arranged above the first aeration assembly in the sedimentation tank, a blanking gap is reserved between the peripheral edge of the flow guide screen plate and the tank wall of the sedimentation tank, a downward extending stepped plate is arranged below a water inlet in the biological treatment tank, a drain hole is formed in the horizontal portion of the stepped plate, a biological rotating cage corresponding to the drain hole is transversely and rotatably connected to the vertical portion of the stepped plate through a rotating shaft, and an ultrafiltration membrane assembly is arranged in the membrane filtration tank. The utility model has the characteristics of combining treatment in various modes and improving treatment efficiency and effect.

Inventors

MO GUODONG
WU JIE
ZHOU JUNJUN

Assignees

舟山旺能环保能源有限公司

Dates

Publication Date: 20260512
Application Date: 20250701

Claims (5)

1. A garbage leachate treatment system comprises a sedimentation tank (1), a biological treatment tank (2) and a membrane filtration tank (3) which are sequentially connected, and is characterized by further comprising an aeration pipe (4) extending into the sedimentation tank (1), the biological treatment tank (2) and the membrane filtration tank (3), wherein a first aeration assembly (41) which is respectively positioned in the sedimentation tank (1) is arranged on the aeration pipe (4), a second aeration assembly (42) which is positioned in the biological treatment tank (2) and a third aeration assembly (43) which is positioned in the membrane filtration tank (3) are arranged on the aeration pipe, an umbrella-shaped diversion screen (11) is arranged above the first aeration assembly (41) in the sedimentation tank (1), a blanking gap (12) is reserved between the peripheral edge of the diversion screen (11) and the tank wall of the sedimentation tank (1), a stepped plate (21) which extends downwards is arranged below a water inlet is arranged in the biological treatment tank (2), a drain hole (22) is arranged at the horizontal part of the stepped plate (21), a vertical part of the stepped plate (21) is connected with a biological filtration cage (23) corresponding to the drain hole (22) through transverse rotation, and a ultrafiltration membrane (31) is arranged in the membrane filtration tank (3).
2. A landfill leachate treatment system according to claim 1, wherein the second aeration assembly (42) comprises a plurality of rotary pipes (421) rotatably connected with the aeration pipes (4), a rotational flow type aeration disc (422) is arranged at the top of each rotary pipe (421), cutting teeth (423) are arranged on the upper surface, the lower surface and the side peripheral surface of each rotational flow type aeration disc (422), and aeration holes (424) are further arranged on the upper surface of each rotational flow type aeration disc (422).
3. A landfill leachate treatment system according to claim 1, wherein the third aeration assembly (43) comprises a plurality of first branch pipes (431) fixedly connected with the aeration pipe (4), second branch pipes (432) are movably connected in the first branch pipes (431) up and down, air nozzles are arranged on the second branch pipes (432), the plurality of second branch pipes (432) are connected through lifting frames (433), and the lifting frames (433) are driven by a lifting driver to move up and down.
4. A landfill leachate treatment system according to claim 3, wherein the lifting driver comprises a winch (51) arranged outside the membrane filtration tank (3), a guide wheel (52) is arranged on the membrane filtration tank (3), and a lifting rope (53) which bypasses the guide wheel (52) and is connected with the winch (51) is arranged on the lifting frame (433).
5. A landfill leachate treatment system according to claim 1, wherein the aeration pipe (4) is provided with flow control valves (7) at the first aeration assembly (41), the second aeration assembly (42) and the third aeration assembly (43).

Description

Landfill leachate treatment system Technical Field The utility model relates to a sewage treatment system, in particular to a landfill leachate treatment system. Background The landfill leachate is high-concentration organic/inorganic liquid generated by biochemical degradation, rainwater/groundwater seepage or water release of the garbage during the process of stacking, transferring, landfill or burning of the garbage, and is one of main secondary pollutants for garbage treatment. The landfill leachate contains a large amount of organic matters, ammonia nitrogen, total nitrogen, heavy metals, phosphorus and the like, belongs to high-concentration organic wastewater, has complex components, has large water quality and water quantity change and is aperiodic, and clearly brings great difficulty to effectively and stably treat the landfill leachate. At present, the landfill leachate of a waste incineration power plant generally adopts a mode of medicament precipitation treatment, biochemical treatment or membrane filtration treatment. The medicine precipitation is realized by adding precipitant or flocculant to react pollutant in sewage with medicine to form water insoluble precipitate, and the biochemical treatment is used to eliminate great amount of biochemical organic matter and the membrane treatment is used to intercept organic matter and other inorganic pollutant difficult to biochemically. However, in the existing drug precipitation treatment, the dosage of the independent drug treatment is larger, the drug cost is higher, turbulence formed by stirring is easy to influence the precipitation effect, and the precipitation efficiency of refractory organic matters is low, in the biochemical treatment, the biological film of a biochemical pond is generally fixed, after a period of use, the aged biological film still stays on a carrier to influence the growth of a new biological film, so that the treatment efficiency of the biological film is reduced, in the membrane filtration treatment, after a period of use of a filter membrane component, the filter membrane needs to be cleaned to ensure the permeability, and in the present, a backwashing device is adopted to clean the filter membrane, but the backwashing device is adopted to treat the waste leachate, and the period of use needs to be stopped, so that the treatment period of the waste leachate is prolonged, and the treatment efficiency of the waste leachate is reduced. Disclosure of utility model The utility model aims to provide a landfill leachate treatment system. The utility model has the characteristics of combining treatment in various modes and improving treatment efficiency and effect. The garbage leachate treatment system comprises a sedimentation tank, a biological treatment tank, a membrane filtration tank, an aeration pipe, a first aeration assembly, a second aeration assembly and a third aeration assembly, wherein the aeration pipe extends into the sedimentation tank, the biological treatment tank and the membrane filtration tank, the first aeration assembly is arranged in the sedimentation tank, the second aeration assembly is arranged in the biological treatment tank, the third aeration assembly is arranged in the membrane filtration tank, an umbrella-shaped flow guide screen plate is arranged above the first aeration assembly in the sedimentation tank, a blanking gap is reserved between the peripheral edge of the flow guide screen plate and the tank wall of the sedimentation tank, a downward extending stepped plate is arranged below a water inlet in the biological treatment tank, a drain hole is formed in the horizontal portion of the stepped plate, the vertical portion of the stepped plate is transversely connected with a biological rotating cage corresponding to the drain hole in a rotating mode through a rotating shaft, and an ultrafiltration membrane assembly is arranged in the membrane filtration tank. In the landfill leachate treatment system, the second aeration assembly comprises a plurality of rotary pipes rotationally connected with the aeration pipes, the tops of the rotary pipes are provided with spiral-flow type aeration plates, cutting teeth are arranged on the upper surface, the lower surface and the side peripheral surfaces of the spiral-flow type aeration plates, and aeration holes are further formed in the upper surface of the spiral-flow type aeration plates. In the foregoing landfill leachate treatment system, the third aeration assembly includes a plurality of first branch pipes fixedly connected with the aeration pipe, and movable connection has the second branch pipe about the inside of first branch pipe, is equipped with the air nozzle on the second branch pipe, connects through the crane between a plurality of second branch pipes, and the crane reciprocates through the drive of lift driver. In the landfill leachate treatment system, the lifting driver comprises a winch arranged outside the membrane filter tank, a g