Efficient integrated sewage treatment equipment

Abstract

The utility model discloses efficient integrated sewage treatment equipment and belongs to the technical field of sewage treatment.The efficient integrated sewage treatment equipment is characterized in that a flow separation barrel with two through ends is arranged in a reaction tank, an aerobic zone is arranged on the outer side of the flow separation barrel, an anoxic zone is arranged on the inner side of the flow separation barrel, and a water distribution pipe is arranged at the bottom of the anoxic zone and can input external sewage into the anoxic zone; a flow pushing device is arranged in the flow isolating cylinder and pushes flow from bottom to top; the bottom of the sedimentation tank is connected with a sludge discharge pump for outputting sludge; the carrier separation device is arranged above the reaction tank and comprises a sludge inlet, a residual sludge outlet and a carrier outlet, the sludge inlet is used for receiving sludge, the carrier outlet is connected with a feeding pipe, and the feeding pipe is communicated into the reaction tank; wherein the sludge discharge pump is connected with the sludge discharge pipe, and the sludge discharge pipe is connected with the sludge inlet and the feeding pipe in parallel. The reaction tank and the sedimentation tank are highly integrated in one device, and the powder carrier can be put into the reaction tank again for use, so that the loss of the powder carrier is reduced, and the treatment efficiency in the reaction tank is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, and more specifically, to an efficient integrated sewage treatment device. Background Art

[0002] Sewage treatment refers to a process of treating sewage, the purpose of which is to purify the water quality so that the sewage meets specific discharge standards. The integrated high-efficiency integrated sewage treatment device is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, and catering.

[0003] For example, Chinese patent document (Publication No.: CN 203820542 U) provides an aerobic-anaerobic integrated fluidized bed biofilm reactor device, which includes an integrated anaerobic tank and aerobic tank. The anaerobic tank includes an anaerobic tank body and a sewage-carrier separation chamber with interconnected bottoms, and the sewage-carrier separation chamber is used to separate sewage and carriers; the aerobic tank includes an aerobic tank body and a mud-water separation sedimentation chamber with interconnected bottoms, and the mud-water separation sedimentation chamber is used to separate sewage and sludge. Among them, the top of the sewage-carrier separation chamber is also connected to the aerobic tank body, and the mud-water separation sedimentation chamber is respectively connected to a sludge discharge port and a water outlet, and the anaerobic tank body is connected to a sewage inlet. The reaction tanks of this device are arranged in a one-way sequence, covering a large area, and when treating sewage with relatively small biological carriers, it is easy to cause waste due to difficult effective recovery.

[0004] For example, Chinese patent document (Publication No.: CN 209778445 U) provides an upflow anoxic-aerobic composite reactor, including: an aeration tank body, a jet aeration device and a jet stirring device; wherein: the jet aeration device is arranged inside the aeration tank body and divides the aeration tank body into two areas: an upper aerobic area and a lower anoxic area; the jet stirring device is arranged near the bottom of the aeration tank body. Although this device integrates an aerobic area and an anoxic area in the same tank and has a certain degree of compactness, its function is single and the sewage treatment effect is not good.

[0005] In view of the above problems, the related art has not provided an effective solution. Summary of the Utility Model

[0006] To solve the problems that may exist in the related art, some embodiments of the present application provide an efficient integrated sewage treatment device, including: a reaction tank, inside which a partition cylinder with both ends penetrating is provided. The outside of the partition cylinder is an aerobic zone, and the inside is an anoxic zone. A water distribution pipe is provided at the bottom of the anoxic zone, which can input external sewage into the anoxic zone; a pusher is arranged inside the partition cylinder, and the pusher pushes the flow from bottom to top; a sedimentation tank, surrounding the reaction tank, for receiving the sewage overflowing from the top of the reaction tank; an outlet pipe is arranged outside the sedimentation tank, for receiving the clear liquid overflowing from the top of the sedimentation tank; a sludge discharge pump is connected to the bottom of the sedimentation tank, for discharging sludge; a carrier separation device, arranged above the reaction tank, including a sludge inlet, a surplus sludge discharge outlet and a carrier discharge outlet. The sludge inlet is used for receiving sludge, and the carrier discharge outlet is connected to a feed pipe, and the feed pipe leads into the reaction tank; wherein, the sludge discharge pump is connected to a sludge discharge pipe, and the sludge discharge pipe is connected in parallel with the sludge inlet and the feed pipe, so that a part of the sludge output from the sedimentation tank enters the carrier separation device, and a part directly enters the reaction tank.

[0007] Further, it also includes a driving motor and a driving rod. The driving motor drives the driving rod to rotate. The driving rod extends into the partition cylinder, and the driving rod is connected to the pusher.

[0008] Further, the bottom of the partition cylinder is fixed to the bottom of the reaction tank through a support frame; the top of the partition cylinder is lower than the top of the aerobic tank.

[0009] Further, a first baffle plate is arranged on the inner side wall of the reaction tank. The first baffle plate is higher than the side wall of the reaction tank and extends towards the side close to the bottom of the partition cylinder.

[0010] Further, an aeration pipe is arranged around the aerobic zone. The aeration pipe surrounds the partition cylinder, and the aeration holes are arranged along the axial plane of the aeration pipe.

[0011] Further, the sludge discharge pipe is connected with a reflux branch pipe and a carrier separation branch pipe; the carrier separation branch pipe is connected to the sludge inlet, so that a part of the sludge output from the sedimentation tank enters the carrier separation device; the reflux branch pipe is connected to the feed pipe, so that a part of the sludge output from the sedimentation tank enters the reaction tank; wherein, a first valve is arranged on the carrier separation branch pipe, and a second valve is arranged on the reflux branch pipe. The sludge intake of the second valve accounts for more than 50% of the sludge discharge pipe.

[0012] Further, a second baffle plate is arranged in the sedimentation tank. The baffle plate extends downward from the top of the side wall of the sedimentation tank, and the second baffle plate is located on the side close to the reaction tank.

[0013] Further, the bottom of the sedimentation tank includes or is connected to a sludge hopper, and the sludge hopper is connected to the sludge discharge pump.

[0014] Furthermore, a plurality of water distribution holes arranged along the axial direction of the water distribution pipe are formed in the upper side of the water distribution pipe; the distance between adjacent water distribution holes is larger closer to the center of the water distribution pipe.

[0015] Furthermore, on one side of the sedimentation tank away from the reaction tank above, there is an effluent weir, and a inclined plate is arranged between the effluent weir and the baffle plate.

[0016] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0017] The reaction tank and the sedimentation tank are integrated in one device in terms of height, and the carrier separation device is located at the top of the reaction tank, reducing the floor area. After the sedimentation tank precipitates the sludge rich in powder carriers, part of the sludge and the powder carriers separated from the other part of the sludge can be put into the reaction tank again for use, reducing the loss of powder carriers, ensuring the treatment efficiency in the reaction tank, greatly saving processes and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings forming a part of this application are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more obvious. The schematic embodiments of the drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0019] Figure 1 is a schematic structural diagram of an efficient integrated sewage treatment device according to an embodiment of this application;

[0020] Figure 2 is a schematic structural diagram of the reaction tank in the structure of the efficient integrated sewage treatment device according to an embodiment of this application;

[0021] Figure 3 is a schematic structural diagram of the water distribution pipe in the structure of the efficient integrated sewage treatment device according to an embodiment of this application; Label description:

[0022] 100, reaction tank; 100b, first baffle plate;

[0023] 110, aerobic zone; 111, aeration pipe;

[0024] 120, anoxic zone; 121, inlet pipe; 122, water distribution pipe; 1221, water distribution hole; 123, partition cylinder;

[0025] 130, feed pipe; 131, reflux branch pipe; 132, second valve; 133, second flowmeter;

[0026] 200, sedimentation tank; 210, sludge discharge pump; 220, sludge discharge pipe; 230, second baffle; 240, sludge hopper;

[0027] 300, flow storage tank; 310, water outlet pipe;

[0028] 400, carrier separation device; 410, influent sludge inlet; 420, excess sludge discharge outlet; 430, carrier discharge outlet; 440, carrier separation branch pipe; 450, first valve; 460, first flowmeter;

[0029] 500, stirring motor; 510, driving rod; 520, agitator. Detailed implementation manners

[0030] In order to enable those skilled in the art of this technology to better understand the solution of this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0031] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0032] This embodiment provides an efficient integrated sewage treatment device. Referring to Figures 1 to 2 as shown, it includes a reaction tank 100, a sedimentation tank 200 and a carrier separation device 400.

[0033] Among them, as Figure 2As shown in the figure, a partition cylinder 123 with both ends penetrating is arranged inside the reaction tank 100. The outer side of the partition cylinder 123 is the aerobic zone 110, and the inner side is the anoxic zone 120. A water distribution pipe 122 is arranged at the bottom of the anoxic zone, which can input external sewage into the anoxic zone 120. A pusher 520 is arranged inside the partition cylinder 123, and the pusher 520 pushes the flow from bottom to top, while fully agitating the fluid in the anoxic zone 120 to prevent excessive sedimentation of sewage in the reaction tank 100.

[0034] Specifically, as Figure 2 shown in the figure, the high-efficiency integrated sewage treatment device further includes a driving motor 500 and a driving rod 510. The driving motor 500 drives the driving rod 510 to rotate. The driving rod 510 extends into the partition cylinder 123, and the driving rod is connected to the pusher 520.

[0035] The bottom of the reaction tank 100 is connected with a water inlet pipe 121 for receiving external sewage. The water inlet pipe 121 is communicated with the water distribution pipe 122. After the external sewage enters the anoxic zone 120 inside the partition cylinder 123 from the water inlet pipe 121 and the water distribution pipe 122 and undergoes denitrification reaction, it is pushed upward by the pusher 520 out of the partition cylinder 123 and enters the aerobic zone 110 for aerobic treatment.

[0036] Among them, due to the structure of the partition cylinder 123 with both ends penetrating, both ends of the anoxic zone 120 are communicated with the partition cylinder 123. With the arrangement of the pusher 520, a part of the treated sewage in the aerobic zone 110 can enter the anoxic zone 120 again from the bottom of the outside of the partition cylinder 123, so that the organic matter in the sewage is further effectively degraded and the water quality is further improved. It not only has a simple structure but also is energy-saving and environmentally friendly.

[0037] Specifically, the bottom of the partition cylinder 123 is fixed to the bottom of the reaction tank through a support frame. The top of the partition cylinder 123 is lower than the top of the aerobic tank. The support frame can make there be enough space between the partition cylinder 123 and the bottom of the reaction tank 100. The whole partition cylinder 123 is placed inside the reaction tank 100, and the sewage in the anoxic zone 120 and the aerobic zone 110 circulates to realize the efficient purification of sewage.

[0038] More specifically, as Figure 2 shown in the figure, the inner side wall of the reaction tank 100 is provided with a first baffle plate 100b. The first baffle plate 100b is higher than the side wall of the reaction tank 100 and extends towards the side close to the bottom of the partition cylinder 123, which is used to lead part of the sewage at the top of the aerobic zone 110 downward to help the water in the aerobic zone 110 flow back into the anoxic zone 120 inside the partition cylinder 123. Another part of the sewage bypasses the first baffle plate 100b and overflows into the sedimentation tank 200 from the top of the reaction tank 100.

[0039] Specifically, as Figure 3As shown in the figure, a water distribution pipe 122 extending around is arranged at the center of the bottom of the anoxic zone 120. The center of the water distribution pipe 122 is connected to the water inlet pipe 121. A number of water distribution holes 1221 arranged along the axial direction of the water distribution pipe 122 are formed on the upper side of the water distribution pipe 122. The water distribution holes 1221 face upward and can convey sewage to the anoxic zone 120.

[0040] More specifically, the closer to the center of the water distribution pipe 122, the greater the distance between adjacent water distribution holes 1221. Adopting this design can make the water outlet of the water distribution pipe more uniform, and the sewage distribution in the baffle cylinder 123 more balanced, preventing all the sewage from gushing out at the position close to the center of the water distribution pipe and causing the end of the water distribution pipe not to discharge water.

[0041] Specifically, a powder carrier is added to the reaction tank 100, making the reaction tank 100 form a biological carrier powder fluidized bed. The powder carrier can increase the concentration of activated sludge, thereby increasing the amount of microorganisms and the number of microbial populations, enabling the reaction tank 100 to obtain a more efficient treatment capacity.

[0042] Among them, as Figure 1 shown in the figure, the sedimentation tank 200 surrounds the reaction tank 100 and is used to receive the sewage overflowing from the top of the reaction tank 100. The sewage precipitates sludge and clear liquid in the sedimentation tank 200. An outlet pipe 310 is arranged outside the sedimentation tank 200 and is used to receive the clear liquid overflowing from the top of the sedimentation tank 200. A sludge discharge pump 210 is connected to the bottom of the sedimentation tank 200 and is used to output sludge.

[0043] Specifically, as Figure 1 shown in the figure, the bottom of the sedimentation tank 200 includes or is connected to a sludge hopper 240. The sludge hopper 240 is connected to the sludge discharge pump 210, and the sludge hopper 240 is used to gather the sludge in the sedimentation tank 200 to the sludge discharge pump 210.

[0044] Specifically, as Figure 1 shown in the figure, a flow storage tank 300 is arranged on the outer periphery of the sedimentation tank 200. The bottom of the flow storage tank 300 is connected to the outlet pipe 310. The clear liquid overflowing from the top of the sedimentation tank 200 first enters the flow storage tank 300 and then flows out uniformly from the outlet pipe 310.

[0045] Among them, the carrier separation device 400 is arranged above the reaction tank 100 and includes a sludge inlet 410, a surplus sludge discharge outlet 420, and a carrier discharge outlet 430. The sludge inlet 410 is used to receive sludge. After the carrier separation device 400 swirls out the surplus sludge and the powder carrier, they are discharged from the surplus sludge discharge outlet 420 and the carrier discharge outlet 430 respectively.

[0046] Among them, as Figure 1As shown, the sludge discharge pump 210 is connected to the sludge discharge pipe 220. The sludge discharge pipe 220 is connected in parallel to the sludge inlet 410 and the feed pipe 130, so that part of the sludge output from the sedimentation tank 200 enters the carrier separation device 400, and part directly enters the reaction tank 100.

[0047] Specifically, the sludge inlet 410 is used to receive sludge. After the sludge enters from the sludge inlet 410, it is cycloned in the carrier separation device 400. Based on the principle of hydrocyclone separation method, the carrier separation device 400 divides the sludge into surplus sludge and powder carriers. The powder carriers are discharged from the carrier discharge port 430, and the surplus sludge is discharged from the surplus sludge discharge port 420. The carrier discharge port 430 is connected to the feed pipe 130, and the feed pipe 130 leads into the reaction tank 100, so that the powder carriers separated from the carrier separation device 400 are put into use in the reaction tank 100 again.

[0048] In this way, the reaction tank 100 and the sedimentation tank 200 are highly integrated in one device, and the carrier separation device is located at the top of the reaction tank, reducing the floor area. After the sedimentation tank 200 precipitates the sludge rich in powder carriers, part of the sludge and the powder carriers separated from the other part of the sludge can be put into use in the reaction tank 100 again, reducing the loss of powder carriers, ensuring the treatment efficiency in the reaction tank 100, saving processes and reducing costs.

[0049] If all the sludge precipitated in the sedimentation tank 200 enters the carrier separation device 400, when too much external sewage enters the high-efficiency integrated sewage treatment equipment, the carrier separation device 400 is prone to overload, and the content of powder carriers in the reaction tank 100 is also prone to be insufficient; if the carrier separation device 400 is cancelled and the sludge precipitated in the sedimentation tank 200 is directly put into the reaction tank 100 again, it will cause the sludge concentration in the reaction tank 100 to be too high, and the user needs to discharge the sludge in the reaction tank 100 in time. If the powder carriers need to be recovered, additional relevant carrier separation devices need to be added, which is very time-consuming and laborious.

[0050] Furthermore, the feed pipe 130 extends into the anoxic zone 120, so that the mixed liquid in the aerobic tank and the sludge in the sedimentation tank 200 are simultaneously refluxed to the anoxic zone 120, increasing the sludge concentration and carrier content in the anoxic zone, and enabling the denitrification reaction to fully act in the anoxic tank.

[0051] Preferably, as Figure 2 shown, the aerobic zone 110 is provided with an aeration pipe 111 in a ring shape. The aeration pipe 111 surrounds the baffle cylinder 123. The gas generated by aeration is blocked by the baffle cylinder 123 to avoid entering the anoxic zone. The aeration holes of the aeration pipe 111 are arranged along the axial plane of the aeration pipe, so that the aeration pipe inputs oxygen to the aerobic tank in all directions, enabling the sewage in the aerobic zone 110 to react with oxygen efficiently and fully, and further improving the sewage treatment efficiency.

[0052] Specifically, as Figure 1 shown, the sludge discharge pipe 220 is connected with a reflux branch pipe 131 and a carrier separation branch pipe 440. The carrier separation branch pipe 440 is connected to the sludge inlet 410, so that part of the sludge output from the sedimentation tank 200 enters the carrier separation device 400. The reflux branch pipe 131 is connected to the feed pipe 130, so that part of the sludge output from the sedimentation tank 200 is directly put into the reaction tank 100 from the feed pipe 130. That is to say, the sludge discharge pipe 220 is connected to the sludge inlet 410 and the feed pipe 130 in parallel through the reflux branch pipe 131 and the carrier separation branch pipe 440 respectively.

[0053] Among them, the carrier separation branch pipe 440 is provided with a first valve 450, and the reflux branch pipe 131 is provided with a second valve 132. The sludge inflow volume of the second valve 132 accounts for more than 50% of the sludge discharge pipe 220, which ensures the total amount of powder carriers in the reaction tank 100 and prevents the carrier separation device 400 from being overloaded.

[0054] More specifically, a first flowmeter 460 is arranged at the first valve 450, and a second flowmeter 133 is arranged at the second valve 132 to accurately control the sludge volume.

[0055] Since the high-efficiency integrated sewage treatment equipment in this embodiment has a high degree of integration, the distance between the reaction tank 100 and the sedimentation area is close, which will cause the water flow from the reaction tank 100 into the sedimentation tank 200 to form a short circuit: the residence time of part of the water is less than the expected residence time and cannot be fully sedimented, and it quickly flows out of the sedimentation tank 200, while the residence time of the other part is greater than the expected residence time, reducing the effective volume of the sedimentation tank 200.

[0056] Therefore, preferably, as Figure 1 shown, a second baffle 230 is arranged in the sedimentation tank 200. The second baffle 230 extends downward from the top of the side wall of the sedimentation tank 200. The second baffle 230 is located on the side close to the reaction tank 100, which can offset part of the kinetic energy of the sewage overflowing from the reaction tank 100 and balance the kinetic energy of the fluid in the sedimentation tank 200. Specifically, an installation frame is arranged at the top of the reaction tank 100 for installing the second baffle 230.

[0057] Furthermore, the side of the sedimentation tank 200 away from the reaction tank 100 above is an effluent weir, and an inclined plate is arranged between the effluent weir and the second baffle 230 to improve the sedimentation efficiency.

[0058] As a sewage treatment method of this embodiment, it is applied to the high-efficiency integrated sewage treatment equipment in this embodiment, and is specifically as follows:

[0059] The water distribution pipe 122 inputs sewage into the partition cylinder 123 in the middle of the reaction tank 100. The specific water flow direction of the sewage is as follows: The sewage first flows into the anoxic zone 120. The sewage in the anoxic zone 120 is pushed by the agitator 520. Part of it flows from bottom to top to the aerobic zone 110 outside the partition cylinder 123, and part of it overflows from the upper part of the reaction tank 100 to the sedimentation tank 200 around the reaction tank 100. The sedimentation tank 200 precipitates clear liquid and sludge, and the sludge enters the sludge discharge pipe 220 from the sludge discharge pump 210. The sludge discharge pipe 220 inputs part of the sludge into the carrier separation device 400. After the carrier separation device 400 separates the powder carrier, the powder carrier is re-invested into the reaction tank 100, and the sludge discharge pipe 220 directly re-invests another part of the sludge into the reaction tank 100 without passing through the carrier separation device 400.

[0060] In this application, the terms "installed", "set", "provided with", "connected", "connected to", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. An efficient integrated sewage treatment device, characterized in that, Comprising: A reaction tank, inside which a partition cylinder with both ends penetrating is provided. The outside of the partition cylinder is an aerobic zone, and the inside is an anoxic zone. A water distribution pipe is arranged at the bottom of the anoxic zone, which can input external sewage into the anoxic zone. A pusher is arranged inside the partition cylinder, and the pusher pushes the flow from bottom to top. A sedimentation tank, surrounding the reaction tank, for receiving the sewage overflowing from the top of the reaction tank. An outlet pipe is arranged on the outside of the sedimentation tank for receiving the clear liquid overflowing from the top of the sedimentation tank. A sludge discharge pump is connected to the bottom of the sedimentation tank for outputting sludge. A carrier separation device, arranged above the reaction tank, including a sludge inlet, a surplus sludge discharge outlet and a carrier discharge outlet. The sludge inlet is used for receiving sludge, and the carrier discharge outlet is connected to a feed pipe, and the feed pipe leads into the reaction tank. Wherein, the sludge discharge pump is connected to a sludge discharge pipe, and the sludge discharge pipe is connected in parallel with the sludge inlet and the feed pipe, so that part of the sludge output from the sedimentation tank enters the carrier separation device, and part directly enters the reaction tank.

2. An efficient integrated sewage treatment device according to claim 1, characterized in that: It further includes a driving motor and a driving rod. The driving motor drives the driving rod to rotate, the driving rod extends into the partition cylinder, and the driving rod is connected to the pusher.

3. An efficient integrated sewage treatment device according to claim 1, characterized in that: The bottom of the partition cylinder is fixed to the bottom of the reaction tank through a support frame; The top of the partition cylinder is lower than the top of the aerobic zone.

4. An efficient integrated sewage treatment device according to claim 1, characterized in that: A first baffle is arranged on the inner side wall of the reaction tank. The first baffle is higher than the side wall of the reaction tank and extends towards the side close to the bottom of the partition cylinder.

5. An efficient integrated sewage treatment device according to claim 1, characterized in that: An aeration pipe is arranged around the aerobic zone. The aeration pipe surrounds the partition cylinder, and the aeration holes of the aeration pipe are arranged along the axial plane of the aeration pipe.

6. An efficient integrated sewage treatment device according to claim 1, characterized in that: The sludge discharge pipe is connected with a reflux branch pipe and a carrier separation branch pipe; the carrier separation branch pipe is connected to the sludge inlet, so that part of the sludge output from the sedimentation tank enters the carrier separation device; the reflux branch pipe is connected to the feed pipe, so that part of the sludge output from the sedimentation tank enters the reaction tank; Wherein, a first valve is arranged on the carrier separation branch pipe, a second valve is arranged on the reflux branch pipe, and the sludge inflow amount of the second valve accounts for more than 50% of the sludge discharge pipe.

7. An efficient integrated sewage treatment device according to claim 1, characterized in that: A second baffle is arranged in the sedimentation tank. The second baffle extends downward from the top of the side wall of the sedimentation tank, and the second baffle is located on the side close to the reaction tank.

8. An efficient integrated sewage treatment device according to claim 1, characterized in that: The bottom of the sedimentation tank includes or is connected with a sludge hopper, and the sludge hopper is connected to the sludge discharge pump.

9. An efficient integrated sewage treatment device according to claim 1, characterized in that: A plurality of water distribution holes arranged along the axial direction of the water distribution pipe are formed in the upper side of the water distribution pipe; the distance between adjacent water distribution holes is larger closer to the center of the water distribution pipe.

10. The high-efficiency integrated sewage treatment device according to claim 7, wherein: One side of the sedimentation tank away from the reaction tank above is an effluent weir, and inclined plates are arranged between the effluent weir and the second baffle.

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