A rural sewage treatment equipment capable of recycling sludge

Abstract

The application discloses a kind of rural sewage treatment equipment of recyclable sludge, belong to sewage treatment technical field, including two left and right symmetrical support structures, swing preliminary screening structure is equipped between the front of two support structures, sludge-water separation conveying structure is equipped at the top of support structure;Support structure is equipped with sewage recycling power generation structure in inside, sewage recycling power generation structure is correspondingly arranged with the bottom surface of sludge-water separation conveying structure;The end of support structure is equipped with mud collection structure, and the feed end of mud collection structure is communicated with the discharge end of sludge-water separation conveying structure;Sewage recycling power generation structure is electrically connected with battery, drying structure, drying structure is installed in mud collection structure inside for the sludge drying collected.The sludge collection structure of the application is arranged at the outside of sludge-water separation conveying structure, and the separated sludge is recycled to the mud collection structure and dried by drying structure, which can reduce the blocking phenomenon caused by sludge wetting.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sewage treatment, and particularly relates to a rural sewage treatment equipment capable of recycling sludge. BACKGROUND

[0002] Sewage treatment refers to a process of purifying sewage so that the sewage meets the water quality requirements for discharge into a certain water body or reuse.

[0003] When sewage is purified and cleaned by using a sewage treatment equipment, a large amount of sludge is carried, and the sludge is rich in a large amount of organic matter while carrying harmful substances. Therefore, a corresponding sludge recycling mechanism is added to the sewage treatment equipment. However, the existing sludge recycling mechanism is easily blocked due to the wetness of the sludge when recycling the sludge, thereby reducing the efficiency of sludge recycling in sewage treatment.

[0004] Therefore, there is an urgent need for a rural sewage treatment equipment capable of recycling sludge to solve the above technical problems. SUMMARY

[0005] The purpose of the present application is to provide a rural sewage treatment equipment capable of recycling sludge to solve the above problems.

[0006] To achieve the above purpose, the present application provides the following scheme:

[0007] A rural sewage treatment equipment capable of recycling sludge comprises two left-right symmetrical support structures, a swinging primary screening structure is arranged between the two support structures, a mud-water separation conveying structure is arranged at the top of the support structure, and the discharge end of the swinging primary screening structure is arranged in correspondence with the feeding end of the corresponding mud-water separation conveying structure;

[0008] A sewage recycling power generation structure is arranged in the support structure, and the sewage recycling power generation structure is arranged in correspondence with the bottom surface of the mud-water separation conveying structure. The sewage recycling power generation structure is used for receiving sewage separated from the mud-water separation conveying structure;

[0009] A sludge collecting structure is arranged on the support structure, the feeding end of the sludge collecting structure is in communication with the discharge end of the corresponding mud-water separation conveying structure, and the sludge collecting structure is used for collecting sludge separated from the mud-water separation conveying structure;

[0010] The swinging primary screening structure, the mud-water separation conveying structure, and the sludge collecting structure are electrically connected with an external controller. The sewage recycling power generation structure is electrically connected with a storage battery. A drying structure for drying the collected sludge is arranged in the sludge collecting structure. The storage battery is arranged on the support structure, and the storage battery is electrically connected with the swinging primary screening structure, the mud-water separation conveying structure, and the sludge collecting structure.

[0011] Preferably, the sludge-water separation conveying structure comprises a conveying support, a sludge-water separation membrane cloth and a conveying motor, the conveying support is installed at the top end of the support structure, the front and rear ends of the conveying support are respectively rotatably connected with rotating rollers, and the same sludge-water separation membrane cloth is sleeved outside the two rotating rollers.

[0012] The two rotating rollers are connected through a belt drive, the conveying motor is installed on the support structure, and the output shaft of the conveying motor is connected with one of the rotating rollers.

[0013] Preferably, the swinging primary screening structure comprises a swinging driving structure and a screening structure fixedly connected with the top end of the swinging driving structure.

[0014] The swinging driving structure comprises a fixed frame, the fixed frame is fixedly connected between the two support structures, the middle part of the fixed frame is fixedly connected with a fixed block, one end of the fixed block is rotatably connected with a sliding cylinder, the sliding cylinder is slidably connected with a sliding rod, the surface of the side of the sliding rod away from the sliding cylinder is provided with a thread, the outer side of the sliding rod is sleeved with a limiting block in thread connection with the sliding rod, and the top end of the sliding rod is fixedly connected with the screening structure.

[0015] The fixed frame is fixedly connected with a screening driving motor, one end of a rocker is connected with the output shaft of the screening driving motor, and the other end of the rocker is rotatably connected with the limiting block.

[0016] Preferably, the screening structure comprises a cross rod and two screening grooves, the middle part of the bottom surface of the cross rod is fixedly connected with the top surface of the sliding rod, the two screening grooves are respectively fixedly connected at the two ends of the same cross rod, a plurality of screening holes are formed in the screening grooves, and the screening holes are used for filtering debris and sundries.

[0017] Preferably, the end of the sliding rod close to the sliding cylinder is fixedly connected with a limiting ball, the diameter of the limiting ball is greater than the diameter of the sliding rod, and the limiting ball is used for preventing the sliding rod from sliding out of the sliding cylinder.

[0018] Preferably, the sludge collecting structure comprises a sludge scraping structure and a collecting structure.

[0019] The mud scraping structure comprises two L-shaped frames arranged symmetrically left and right, one end of the L-shaped frame is mounted on the support structure, the end of any one of the L-shaped frame away from the support structure is fixedly connected with the fixed end of a mud collecting driving motor, one end of a roller shaft is connected with the output shaft of the mud collecting driving motor, the roller shaft is arranged between the two L-shaped frames, the other end of the roller shaft is rotatably connected with the corresponding L-shaped frame, the outer side of the roller shaft is fixedly connected with a plurality of brush columns arranged in a matrix, the end of the brush column away from the roller shaft is in contact with the membrane surface of the mud-water separation membrane, and the brush column is used for scraping the sludge on the mud-water separation membrane, the collecting structure is located on one side of the roller shaft, and the collecting structure is used for collecting the scraped sludge.

[0020] Preferably, the collecting structure comprises an arc-shaped mud guard, the arc-shaped mud guard is used for preventing the sludge scraped by the brush column from splashing, the arc-shaped mud guard is fixedly connected with the support structure, and a mud tank frame is fixedly connected with the discharge end of the arc-shaped mud guard; the drying structure is mounted on the inner wall of the arc-shaped mud guard.

[0021] The mud tank frame is slidably connected with a mud collecting tank, the mud collecting tank is used for collecting the scraped sludge, the inlet end of the mud collecting tank is in communication with the discharge end of the arc-shaped mud guard, and a handle is arranged on the side wall of the mud collecting tank for facilitating pulling.

[0022] Preferably, the sewage recycling power generation structure comprises a sewage collecting tank, the sewage collecting tank is in a bent shape, the sewage collecting tank is placed in the inside of the support structure, the sewage collecting tank is used for collecting the sewage separated by the mud-water separation membrane, the sewage collecting tank is in communication with an external sewage treatment device through a recycling pipe, and a water power generation structure is arranged in the inside of the sewage collecting tank.

[0023] Preferably, the water power generation structure comprises a parallel frame, the parallel frame is fixedly connected in the sewage collecting tank, a water disc is rotatably connected with the parallel frame through a rotating shaft, and a plurality of blades are circumferentially and equidistantly fixedly connected with the edge of the water disc.

[0024] One end of the rotating shaft protrudes out of the parallel frame and is connected with a driving wheel, one end of a belt is sleeved on the driving wheel, the other end of the belt is sleeved on the input end of a generator, the generator is fixedly connected with the parallel frame, and the generator is electrically connected with the storage battery.

[0025] Preferably, the sewage collecting tank is divided into front and rear sections, the sewage collecting tank located in the front section is arranged to be inclined upward by 10°-15° along the horizontal plane, the sewage collecting tank located in the rear section is arranged horizontally, and the water disc is located at the joint of the two sewage collecting tanks.

[0026] Compared with the prior art, the present application has the following advantages and technical effects:

[0027] In use, the sewage is preliminarily screened by the swinging preliminary screening structure, and the stones and sundries with large volume are filtered out. The preliminarily screened sewage falls on the sludge-water separation conveying structure, and is screened again by the sludge-water separation conveying structure to separate the water and the sludge. The separated sewage is recycled to the sewage recycling power generation structure to generate power by using the sewage, and the electric energy is stored in the storage battery. The storage battery is electrically connected with the structure requiring power of the device, and is used as a part of the power supply source of the device. The inlet of the sludge collecting structure is in communication with the outlet of the sludge-water separation conveying structure. The sludge collecting structure is arranged outside the sludge-water separation conveying structure. The separated sludge is recycled to the sludge collecting structure and is dried by the drying structure. The present application does not arrange a filter screen, and directly recycles the sludge by the sludge collecting structure, so that the filter screen blocking phenomenon caused by the wet sludge can be reduced compared with the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings:

[0029] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0030] Figure 2 It is a schematic diagram of the local structure of the present application;

[0031] Figure 3 It is Figure 2 an enlarged view of A in the middle;

[0032] Figure 4 It is a structure diagram of the swinging preliminary screening structure Figure 1 ;

[0033] Figure 5 It is a structure diagram of the swinging preliminary screening structure Figure 2 ;

[0034] Figure 6 It is a structure diagram of the water power generation structure;

[0035] Figure 7 It is a sectional view of the sludge collecting box in the embodiment 2 of the present application;

[0036] Wherein, 1, support structure; 2, sludge and water separation conveying structure; 3, swing primary screening structure; 4, sludge collecting structure; 5, sewage recycling power generation structure; 6, recovery pipe; 201, conveying support; 202, sludge and water separation membrane cloth; 301, fixed block; 302, sliding cylinder; 303, sliding rod; 304, screening drive motor; 305, rocker; 306, limit block; 307, cross bar; 308, screening groove; 309, fixed frame; 310, limit ball; 401, arc mudguard; 402, mud tank frame; 403, roller; 404, sludge collecting tank; 405, handle; 406, sludge collecting drive motor; 407, L-shaped frame; 408, brush column; 409, clamping groove; 410, filter membrane; 411, water storage box; 501, sewage collecting tank; 502, hydroelectric power generation structure; 5021, parallel frame; 5022, water tray; 5023, blade; 5024, rotating shaft; 5025, driving wheel; 5026, belt; 5027, generator. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0039] Embodiment 1:

[0040] With reference to Figures 1 to 6 The embodiment discloses a rural sewage treatment equipment capable of recycling sludge, comprising two left-right symmetrically arranged support structures 1, a swing primary screening structure 3 is arranged between the two support structures 1, a sludge and water separation conveying structure 2 is arranged at the top end of the support structure 1, and the discharge end of the swing primary screening structure 3 is correspondingly arranged with the feed end of the corresponding sludge and water separation conveying structure 2;

[0041] A sewage recycling power generation structure 5 is arranged in the support structure 1, the sewage recycling power generation structure 5 is correspondingly arranged with the bottom surface of the sludge and water separation conveying structure 2, and the sewage recycling power generation structure 5 is used for receiving sewage separated from the sludge and water separation conveying structure 2;

[0042] The support structure 1 is provided with a sludge collecting structure 4, the feed end of the sludge collecting structure 4 is in communication with the discharge end of the corresponding sludge and water separation conveying structure 2, and the sludge collecting structure 4 is used for collecting sludge separated from the sludge and water separation conveying structure 2;

[0043] The swinging primary screening structure 3, the sludge-water separation conveying structure 2, the sludge collecting structure 4 and the external controller are electrically connected, the sewage recycling power generation structure 5 is electrically connected with a storage battery, the sludge collecting structure 4 is internally provided with a drying structure for drying the collected sludge, the storage battery is mounted on the support structure 1, and the storage battery is electrically connected with the swinging primary screening structure 3, the sludge-water separation conveying structure 2 and the sludge collecting structure 4.

[0044] In use, the sewage is primarily screened through the swinging primary screening structure 3, and stones and sundries with large volumes are filtered out, the screened sewage falls on the sludge-water separation conveying structure 2, the water and the sludge are separated through the sludge-water separation conveying structure 2, the separated sewage is recycled to the sewage recycling power generation structure 5, power generation is performed by using the sewage, and the electric energy is stored in the storage battery, the storage battery is electrically connected with the structures requiring power of the device, serves as a power supply source of the device, the feeding end of the sludge collecting structure 4 is communicatively arranged with the discharging end of the sludge-water separation conveying structure 2, the sludge collecting structure 4 is arranged outside the sludge-water separation conveying structure 2, the separated sludge is recycled to the sludge collecting structure 4 and dried through the drying structure, and the filter screen is not arranged, the sludge is directly recycled through the sludge collecting structure 4, and compared with the prior art, the filter screen blocking phenomenon caused by sludge wetting can be reduced.

[0045] Further optimization scheme, the sludge-water separation conveying structure 2 includes a conveying support 201, a sludge-water separation membrane cloth 202 and a conveying motor, the conveying support 201 is mounted at the top end of the support structure 1, and the front end and the rear end of the conveying support 201 are respectively rotatably connected with rotating rollers, and the same sludge-water separation membrane cloth 202 is sleeved outside the two rotating rollers.

[0046] The two rotating rollers are drivingly connected through a belt, the conveying motor is mounted on the support structure 1, and the output shaft of the conveying motor is shaft-connected with one of the rotating rollers.

[0047] Further optimization scheme, the swinging primary screening structure 3 includes a swinging driving structure and a screening structure fixedly connected with the top end of the swinging driving structure.

[0048] The swinging driving structure includes a fixed frame 309 fixedly connected between the two support structures 1, a fixed block 301 fixedly connected to the middle portion of the fixed frame 309, a sliding cylinder 302 rotatably connected to one end of the fixed block 301, a sliding rod 303 slidably connected in the sliding cylinder 302, a thread being formed in the surface of one side of the sliding rod 303 away from the sliding cylinder 302, a limiting block 306 sleeved with the sliding rod 303 and threadedly connected with the sliding rod 303, and the top end of the sliding rod 303 being fixedly connected with the screening structure.

[0049] The fixed frame 309 is fixedly connected with a screening driving motor 304, the output shaft of the screening driving motor 304 is shaft-connected with one end of a rocker 305, and the other end of the rocker 305 is rotatably connected with the limiting block 306.

[0050] Further optimization scheme, the screening structure includes a crossbar 307, two screening grooves 308, the bottom surface of the crossbar 307 is fixedly connected with the top surface of the sliding rod 303, and the two screening grooves 308 are fixedly connected at the opposite ends of the same crossbar 307. A plurality of screening holes are formed in the screening groove 308, and the screening holes are used for filtering gravel and sundries.

[0051] Further optimization scheme, the sliding rod 303 is fixedly connected with a limiting ball 310 at one end close to the sliding cylinder 302, and the diameter of the limiting ball 310 is greater than the diameter of the sliding rod 303, so as to prevent the sliding rod 303 from sliding out of the sliding cylinder 302.

[0052] Before use, the sliding rod 303 is rotated to a suitable height, and a limiting sleeve (not shown in the figure) is clamped at the bottom end of the limiting block 306, so as to further fix the position of the limiting block 306.

[0053] Subsequently, when the screening driving motor 304 is started, the rocker 305 rotates in a circumferential direction, driving the limiting block 306 and the sliding cylinder 302 to move synchronously, so that the screening groove 308 can move synchronously in an up-down oscillation and a left-right swing, thereby enhancing the screening effect.

[0054] Further optimization scheme, the mud collecting structure 4 includes a mud scraping structure and a collecting structure;

[0055] The mud scraping structure includes two L-shaped frames 407 symmetrically arranged on the left and right, one end of the L-shaped frame 407 is mounted on the support structure 1, and the end of the L-shaped frame 407 away from the support structure 1 is fixedly connected with the fixed end of the mud collecting driving motor 406. One end of the output shaft of the mud collecting driving motor 406 is connected with one end of the roller shaft 403, the roller shaft 403 is arranged between the two L-shaped frames 407, the other end of the roller shaft 403 is rotatably connected with the corresponding L-shaped frame 407, and a plurality of brush columns 408 arranged in a matrix are fixedly connected to the outer side of the roller shaft 403. The end of the brush column 408 away from the roller shaft 403 is in contact with the membrane surface of the mud-water separation membrane cloth 202, and is used for scraping the sludge on the mud-water separation membrane cloth 202. The collecting structure is located on one side of the roller shaft 403, and is used for collecting the scraped sludge.

[0056] The roller shaft 403 rotates in the same direction as the mud-water separation membrane cloth 202, and the brush column 408 can brush the sludge on the mud-water separation membrane cloth 202 away from the mud-water separation membrane cloth 202. The sludge can be scattered by selecting the brush column 408, and it is easier to dry the sludge subsequently.

[0057] Further optimization scheme, the collecting structure includes an arc-shaped mud guard 401, the arc-shaped mud guard 401 is used for preventing the sludge scraped by the brush column 408 from splashing, the arc-shaped mud guard 401 is fixedly connected to the support structure 1, a mud tank frame 402 is fixedly connected to the discharge end of the arc-shaped mud guard 401, and the drying structure is mounted on the inner wall of the arc-shaped mud guard 401.

[0058] The mud tank frame 402 is slidably fitted with a mud collecting tank 404 for collecting the scraped sludge. The feeding end of the mud collecting tank 404 is in communication with the discharging end of the arc-shaped mud guard 401, and a handle 405 is arranged on the side wall of the mud collecting tank 404 for facilitating pulling.

[0059] Further optimization scheme, sewage recycling power generation structure 5 includes sewage collecting tank 501, sewage collecting tank 501 is bent, sewage collecting tank 501 is placed in the inside of support structure 1, sewage collecting tank 501 is used for collecting the sewage separated by sludge and water separation membrane cloth 202, sewage collecting tank 501 is in communication with external sewage treatment equipment through recycling pipe 6, water power generation structure 502 is arranged in the inside of sewage collecting tank 501, water power generation structure 502 is located in the low end of the inclined section of sewage collecting tank 501.

[0060] Further optimization scheme, water power generation structure 502 includes parallel frame 5021, parallel frame 5021 is fixedly connected in sewage collecting tank 501, parallel frame 5021 is rotatably connected with water disc 5022 through rotating shaft 5024, the edge of water disc 5022 is fixedly connected with a plurality of blades 5023 at equal intervals in the circumference;

[0061] One end of rotating shaft 5024 extends out of parallel frame 5021 and is shaft-connected with driving wheel 5025, one end of belt 5026 is sleeved on driving wheel 5025, the other end of belt 5026 is sleeved on the input end of generator 5027, generator 5027 is fixedly connected on parallel frame 5021, and generator 5027 is electrically connected with storage battery.

[0062] Further optimization scheme, sewage collecting tank 501 is divided into front and rear two sections, the sewage collecting tank 501 located in the front section is arranged to be inclined upward by 10°-15° along the horizontal plane, the sewage collecting tank 501 located in the rear section is arranged horizontally, and the water disc 5022 is located at the joint of the two sewage collecting tanks 501.

[0063] The inclined arrangement of the front sewage collecting tank 501 can ensure the flow state of water, so that the water force acting on the water disc 5022 located at the joint is relatively uniform, thereby stabilizing power generation.

[0064] Embodiment 2:

[0065] Referring to Figure 7 It is shown that the difference between this embodiment and embodiment 1 is that a clamping groove 409 is arranged in the mud collecting tank 404, a filter membrane 410 is clamped in the clamping groove 409, a water storage box 411 is arranged below the filter membrane 410, the filter membrane 410 is used for filtering the recycled sludge again, and the water storage box 411 is used for recycling the sewage in the sludge after being filtered again.

[0066] In the description of the present application, it needs to be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0067] The above-described embodiments are only to describe the preferred modes of the present application, and not to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A rural sewage treatment device with recyclable sludge, characterized in that: It includes two symmetrically arranged support structures (1), a swing primary screen structure (3) is provided between the two support structures (1), a mud-water separation and conveying structure (2) is provided at the top of the support structure (1), and the discharge end of the swing primary screen structure (3) is correspondingly arranged with the feed end of the mud-water separation and conveying structure (2). The support structure (1) is equipped with a sewage recycling and power generation structure (5), which is arranged corresponding to the bottom surface of the mud-water separation and conveying structure (2). The sewage recycling and power generation structure (5) is used to receive the sewage separated in the mud-water separation and conveying structure (2). The support structure (1) is provided with a sludge collection structure (4). The feed end of the sludge collection structure (4) is connected to the discharge end of the corresponding mud-water separation and conveying structure (2). The sludge collection structure (4) is used to collect the sludge separated in the mud-water separation and conveying structure (2). The swing primary screening structure (3), the mud-water separation conveying structure (2), and the sludge collection structure (4) are electrically connected to an external controller. The wastewater recycling power generation structure (5) is electrically connected to a storage battery. The sludge collection structure (4) is equipped with a drying structure for drying the collected sludge. The storage battery is installed on the support structure (1). The storage battery is electrically connected to the swing primary screening structure (3), the mud-water separation conveying structure (2), and the sludge collection structure (4). The mud-water separation conveying structure (2) includes a conveying support (201), a mud-water separation membrane (202), and a conveying motor. The conveying support (201) is installed at the top of the support structure (1). Rotating rollers are rotatably connected to the front and rear ends of the conveying support (201). The same mud-water separation membrane (202) is sleeved on the outside of the two rotating rollers. The two rotating rollers are connected by a belt drive, and the transmission motor is mounted on the support structure (1). The output shaft of the transmission motor is connected to one of the rotating rollers. The mud collection structure (4) includes a mud scraping structure and a collection structure; The sludge scraping structure includes two L-shaped frames (407) arranged symmetrically on the left and right. One end of each L-shaped frame (407) is mounted on the support structure (1). The end of any L-shaped frame (407) away from the support structure (1) is fixedly connected to the fixed end of a sludge collection drive motor (406). The output shaft of the sludge collection drive motor (406) is shaft-connected to one end of a roller (403). The roller (403) is arranged between the two L-shaped frames (407). 3) The other end is rotatably connected to the corresponding L-shaped frame (407). A plurality of brush columns (408) arranged in a matrix are fixed to the outer side of the roller (403). The end of the brush column (408) away from the roller (403) contacts the membrane surface of the sludge-water separation membrane (202) to scrape off the sludge on the sludge-water separation membrane (202). The collection structure is located on one side of the roller (403) and is used to collect the scraped sludge.

2. The rural sewage treatment equipment with recyclable sludge according to claim 1, characterized in that: The collection structure includes an arc-shaped mudguard (401), which is used to prevent the sludge scraped off by the brush column (408) from splashing. The arc-shaped mudguard (401) is fixed to the support structure (1). A mud box frame (402) is fixed to the discharge end of the arc-shaped mudguard (401). The drying structure is installed on the inner wall of the arc-shaped mudguard (401). A mud collection box (404) is slidably fitted inside the mud box frame (402). The mud collection box (404) is used to collect the scraped sludge. The feed end of the mud collection box (404) is connected to the discharge end of the arc-shaped mud baffle (401). A handle (405) is provided on the side wall of the mud collection box (404) for easy pulling.

3. The rural sewage treatment equipment with recyclable sludge according to claim 1, characterized in that: The wastewater recycling power generation structure (5) includes a wastewater collection tank (501), which is bent and placed inside the support structure (1). The wastewater collection tank (501) is used to collect the wastewater separated by the mud-water separation membrane (202). The wastewater collection tank (501) is connected to the external wastewater treatment equipment through a recycling pipe (6). The wastewater collection tank (501) is equipped with a hydroelectric power generation structure (502) inside the wastewater collection tank (501), which is located at the lower end of the inclined section of the wastewater collection tank (501).

4. A rural sewage treatment device with recyclable sludge according to claim 3, characterized in that: The hydroelectric power generation structure (502) includes a parallel frame (5021), which is fixedly connected inside the sewage collection tank (501). The parallel frame (5021) is rotatably connected to a water tray (5022) via a rotating shaft (5024). Several blades (5023) are fixedly connected to the edge of the water tray (5022) at equal intervals. One end of the rotating shaft (5024) extends out of the parallel frame (5021) and is connected to the drive wheel (5025). One end of the belt (5026) is sleeved on the drive wheel (5025), and the other end of the belt (5026) is sleeved on the input end of the generator (5027). The generator (5027) is fixed to the parallel frame (5021) and is electrically connected to the battery.

5. A rural sewage treatment device with recyclable sludge according to claim 4, characterized in that: The sewage collection tank (501) is divided into two sections, front and rear. The sewage collection tank (501) in the front section is inclined upward at 10°-15° along the horizontal plane, while the sewage collection tank (501) in the rear section is horizontally set. The water tray (5022) is located at the junction of the two sewage collection tanks (501).

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