Sewage treatment and recovery method and device

Abstract

The invention discloses a first treatment pond which is of a pond body structure with an opening in the upper portion. A water outlet is formed in the lower part of the first treatment tank; the sewage treatment agent tank is connected to the upper part of the first treatment tank through a connecting arm; a first water inlet and a second water inlet are formed in the upper part of the sewage treatment agent tank, and a plurality of water filtering holes are formed between the first water inlet and the second water inlet; the sewage pipe comprises a first sewage pipe and a second sewage pipe which are respectively connected with the first water inlet and the second water inlet; the flow guide plate is connected to the middle of the first treatment tank and located under the sewage treatment agent tank, the included angle between the flow guide plate and the horizontal line is 15-20 degrees, and a plurality of convex strips are arranged on the upper surface of the flow guide plate; the second treatment tank comprises a third water inlet, a water purification port and a filter grid; the invention also discloses a sewage treatment and recovery method. According to the invention, long-time precipitation treatment is not needed, so that the sewage treatment efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and more specifically, to a method and device for sewage treatment and recycling. Background Art

[0002] As the proportion of industry in the gross national product continues to grow, industrial wastewater has also increased. If the wastewater is discharged without being treated, it will cause great harm to people and the environment. At the same time, with the continuous improvement of people's living standards, water resources are widely used in construction, agriculture, transportation, energy, urban landscape, medical care, catering and other fields, resulting in a growing scarcity of water resources. It is of great significance to treat and recycle polluted water.

[0003] Most existing methods for treating sewage involve sedimentation and filtration of the sewage, followed by further filtration after sufficient mixing and reaction with sewage treatment agents, so as to meet the discharge standards or the standards for recycling. However, sedimentation takes a long time, resulting in low sewage treatment efficiency; secondly, mixing with sewage treatment agents often results in secondary pollution due to the lack of sufficient reaction, resulting in the inclusion of agents in the treated water samples.

[0004] Therefore, there is an urgent need for a method and device for sewage treatment and recovery that can improve sewage treatment efficiency and reduce entrainment of sewage treatment agents. Summary of the invention

[0005] An object of the present invention is to address at least the above-mentioned disadvantages and to provide at least the advantages which will be described hereinafter.

[0006] Another object of the present invention is to provide a sewage treatment and recycling device that is easy to clean and maintain.

[0007] In order to achieve these purposes and other advantages of the present invention, the present invention provides a sewage treatment and recycling device, including: a first treatment tank, a sewage treatment agent tank, a sewage pipe, a guide plate and a second treatment tank.

[0008] The first treatment pool is a pool structure with an upper opening; a water outlet is provided at the lower part of the first treatment pool.

[0009] A sewage treatment agent tank has a space inside for accommodating sewage treatment agents and sewage; the sewage treatment agent tank is rotatably connected to the upper part of the first treatment tank through a connecting arm; the upper part of the sewage treatment agent tank is provided with a first water inlet and a second water inlet, and the first water inlet and the second water inlet are symmetrically connected to the left and right sides of the sewage treatment agent tank; a plurality of water filter holes are provided between the first water inlet and the second water inlet.

[0010] The sewage pipe comprises a first sewage pipe and a second sewage pipe, wherein the first sewage pipe and the second sewage pipe are connected to the first water inlet and the second water inlet respectively.

[0011] A guide plate, comprising a first guide plate and a second guide plate, wherein the angle between the guide plate and the horizontal line is 15-20°; the first guide plate is connected directly below the sewage treatment agent tank, and a first guide port is provided at the lowest end of the first guide plate; the second guide plate is connected below the first guide plate, and the inclination direction of the second guide plate is opposite to that of the first guide plate, and a second guide port is provided at the lowest end of the second guide plate; a plurality of irregular convex strips are provided on the upper surface of the guide plate.

[0012] The second treatment tank comprises a third water inlet, a water purification port, and a filter grille; the third water inlet is located in the lower middle part of the second treatment tank, and the third water inlet is connected to the water outlet through a third sewage pipe; the water purification port is arranged in the upper part of the second treatment tank; the filter grille is connected between the third water inlet and the water purification port, and the filter grille divides the second treatment tank into relatively independent upper and lower spaces.

[0013] In the above scheme, specifically, the sewage pipe is a hose to meet the requirement that the sewage pipe swings with the swing of the sewage treatment agent tank; when treating sewage, the sewage is first transported to the sewage treatment agent tank through the first sewage pipe and the second sewage pipe respectively, so that the sewage can be mixed with the sewage treatment agent in the sewage treatment agent tank, so that the impurity particles in the sewage are flocculated, and the particle size of the precipitated particles is larger than the aperture of the water filter hole, so that the precipitated particles with large particle size are left in the sewage treatment agent tank, and the other part of the water body flows out from the water filter hole to the first treatment tank; this part of the water body gradually contacts the upper surface of the guide plate during the process of flowing downward under the drainage action of the guide plate, and the impurity particles that are not filtered are intercepted by the convex strips on the upper surface of the guide plate, thereby achieving further filtration of the water body. The water body filtered by the first sewage treatment tank is drained to the second treatment tank, and is further filtered by the second treatment tank and discharged from the clean water outlet to obtain water that meets the recycling requirements. The sewage treatment and recycling device of the present invention does not require long-term sedimentation treatment, which greatly speeds up the efficiency of sewage treatment.

[0014] Secondly, since the first water inlet and the second water inlet are respectively provided on the left and right sides of the upper part of the sewage treatment agent tank, when sewage is input into the sewage treatment agent tank, in actual application, by controlling the flow of the first sewage pipe and the second sewage pipe or controlling the first sewage pipe and the second sewage pipe to alternately transport water, the sewage treatment agent tank is in a state of swinging left and right, so that the sewage treatment agent in the sewage treatment agent tank and the sewage can fully react, thereby accelerating the efficiency of sewage treatment. In order to better achieve the technical effect of the present invention, when the amount of water in the sewage treatment agent tank is higher than 4 / 5 of the capacity of the sewage treatment agent tank, the input of sewage is stopped, and the water body flows out from the water filter hole to the first treatment pool while the sewage treatment agent tank swings by inertia; when the amount of water in the sewage treatment agent tank is lower than 3 / 5 of the capacity of the sewage treatment agent tank, sewage is continued to be input into the sewage treatment agent tank, which is conducive to shaking down large particles of impurities.

[0015] In addition, since the first guide port and the second guide port are respectively located at the lowest ends of the first guide plate and the second guide plate, that is, the first guide port and the second guide port are close to the inner wall of the first treatment tank, the water passing through the first guide port and the second guide port continues to flow along the inner wall of the first treatment tank to the bottom of the first treatment tank, thereby reducing the interference with the water in the first treatment tank.

[0016] In addition, in order to better achieve the technical effect of the present invention, the following technical details are also included: the sewage treatment agent tank is detachably connected to the first treatment tank; a sewage discharge port is provided at the bottom of the sewage treatment agent tank; and a sewage discharge switch valve is connected to the sewage discharge port. When the sewage treatment is completed, the sewage treatment agent tank is removed, and the sewage discharge switch valve is opened to discharge the sediment in the sewage treatment agent tank, and clean water and cleaning tools are poured into the sewage treatment agent tank from the sewage discharge port to clean the sewage treatment agent tank, which is more convenient and saves trouble than cleaning the entire sewage treatment tank.

[0017] In addition, in order to better achieve the technical effect of the present invention, the following technical details are also included: the guide plate is detachably connected to the first treatment tank, so that the guide plate can be removed for cleaning. At the same time, when the sewage treatment agent tank and the guide plate are removed, the first treatment tank is in a completely open state at the top, which is convenient for cleaning and maintenance.

[0018] Preferably, the sewage treatment agent tank is a spherical structure.

[0019] In the above scheme, the sewage treatment agent tank is set to a spherical structure, so that it is convenient to keep the sewage treatment agent tank in a left-right swinging state by controlling the flow of the first sewage pipe and the second sewage pipe or controlling the first sewage pipe and the second sewage pipe to alternately supply water, thereby promoting the sewage treatment agent in the sewage treatment agent tank and the sewage to fully react, thereby accelerating the efficiency of sewage treatment.

[0020] Preferably, two connecting arms are provided, and the two connecting arms are respectively connected to the front center point of the sewage treatment agent tank and the rear center point of the sewage treatment agent tank from the left and right sides of the first treatment tank.

[0021] Preferably, the angle between the center connecting line from the first water inlet to the sewage treatment agent tank and the mid-perpendicular line of the sewage treatment agent tank is 45-55°.

[0022] In the above scheme, by limiting the angle between the first water inlet and the second water inlet and the perpendicular bisector of the sewage treatment agent tank, the relative positions of the first water inlet and the second water inlet in the sewage treatment agent tank are limited, thereby limiting the swing amplitude of the sewage treatment agent tank, and avoiding the sewage treatment agent tank from swinging too much, causing the sewage treatment agent tank to invert and causing the precipitated particles to block the water filter holes and affect the efficiency of sewage treatment.

[0023] Preferably, a frosted layer is connected to the surface of the guide plate.

[0024] In the above scheme, a frosted layer is provided on the surface of the guide plate, thereby increasing the contact friction between the water body and the surface of the guide plate, thereby facilitating the interception of foreign particles.

[0025] Preferably, the sewage treatment and recovery device also includes a first water level sensor, a second water level sensor, a water outlet switch and a controller; the first water level sensor is connected to the lower middle part of the first treatment tank, located at a height of at least 15 cm below the guide plate; the second water level sensor is connected to the lower part of the first treatment tank, located at a height of at least 10 cm above the water outlet; the water outlet switch is connected to the water outlet; and the controller is respectively connected to the first water level sensor, the second water level sensor and the water outlet switch.

[0026] In the above scheme, specifically, the water level of the first treatment tank is monitored by the first water level sensor and the second water level sensor. When the water level reaches the position of the first water level sensor, the water outlet switch is controlled to open to divert the water to the second treatment tank; when the water level is lower than the position of the second water level sensor, the water outlet switch is controlled to close to give the water a certain amount of time to settle, thereby reducing the impurity content of the water output to the second treatment tank.

[0027] Methods for wastewater treatment and recycling include: Preparation of sewage treatment chemicals; The sewage is introduced into the sewage treatment agent tank and fully mixed with the sewage treatment agent, and filtered out through the filter holes of the sewage treatment agent tank to obtain a first water body; The first water body is diverted onto the guide plate to obtain a second water body; The second water body is further filtered through a filter grid to obtain clean water.

[0028] In the above scheme, specifically, the sewage treatment agent is a water-soluble high molecular polymer. The sewage is sequentially subjected to the reaction and filtration of the sewage treatment agent tank, the interception of the guide plate and the filtration of the filter grid, and the impurity particles in the water body are filtered to obtain clean water.

[0029] Advantages of the present invention: First, the sewage pipe of the sewage treatment and recycling device of the present invention is a hose, so that the sewage pipe swings with the swing of the sewage treatment agent tank; when treating sewage, the sewage is first transported to the sewage treatment agent tank through the first sewage pipe and the second sewage pipe respectively, so that the sewage can be mixed with the sewage treatment agent in the sewage treatment agent tank, so that the impurity particles in the sewage are flocculated, and the particle size of the precipitation particles is larger than the aperture of the water filter hole, so that the precipitation particles with large particle size are left in the sewage treatment agent tank, and the other part of the water body flows out from the water filter hole to the first treatment tank; this part of the water body gradually flows downward under the drainage action of the guide plate and contacts the upper surface of the guide plate, wherein the impurity particles that are not filtered are intercepted by the convex strips on the upper surface of the guide plate, thereby achieving further filtration of the water body. The water body filtered by the first sewage treatment tank is drained to the second treatment tank, and is further filtered by the second treatment tank and discharged from the clean water outlet to obtain the water body that meets the recycling requirements. The sewage treatment and recycling device of the present invention does not require long-term sedimentation treatment, which greatly speeds up the efficiency of sewage treatment.

[0030] Secondly, the sewage treatment and recycling device of the present invention is provided with a first water inlet and a second water inlet on the left and right sides of the upper part of the sewage treatment agent tank. When sewage is input into the sewage treatment agent tank, in actual application, by controlling the flow of the first sewage pipe and the second sewage pipe or controlling the first sewage pipe and the second sewage pipe to alternately transport water, the sewage treatment agent tank is in a state of swinging left and right, so that the sewage treatment agent in the sewage treatment agent tank and the sewage can fully react, thereby accelerating the efficiency of sewage treatment. In order to better achieve the technical effect of the present invention, when the amount of water in the sewage treatment agent tank is higher than 4 / 5 of the capacity of the sewage treatment agent tank, the input of sewage is stopped, and the water body flows out from the water filter hole to the first treatment pool while the sewage treatment agent tank swings by inertia; when the amount of water in the sewage treatment agent tank is lower than 3 / 5 of the capacity of the sewage treatment agent tank, sewage is continued to be input into the sewage treatment agent tank, which is conducive to shaking and sinking large particles of impurities.

[0031] In addition, the sewage treatment and recovery device of the present invention sets the sewage treatment agent tank as a spherical structure, so that it is convenient to keep the sewage treatment agent tank in a left-right swinging state by controlling the flow of the first sewage pipe and the second sewage pipe or controlling the first sewage pipe and the second sewage pipe to alternately supply water, thereby promoting the sewage treatment agent in the sewage treatment agent tank and the sewage to fully react, thereby accelerating the efficiency of sewage treatment.

[0032] In addition, the sewage treatment and recovery device of the present invention limits the angle between the first water inlet and the second water inlet and the perpendicular bisector of the sewage treatment agent tank, thereby limiting the relative positions of the first water inlet and the second water inlet in the sewage treatment agent tank, thereby limiting the swing amplitude of the sewage treatment agent tank, and preventing the sewage treatment agent tank from swinging too much, causing the sewage treatment agent tank to invert and causing the precipitated particles to block the water filter holes and affect the efficiency of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure of the sewage treatment and recovery device of the present invention; Figure 2 It is a structural schematic diagram of a sewage treatment agent tank in a sewage treatment and recycling device of the present invention; Figure 3 This is another schematic diagram of the structure of the sewage treatment and recovery device of the present invention.

[0034] In the figure, the first treatment tank 1, the water outlet 11, the sewage treatment agent tank 2, the water filter hole 21, the sewage pipe, the guide plate 3, the convex strip 31, the second treatment tank 4, the third water inlet 41, the water purification outlet 42, the filter grille 43, the first sewage pipe 5, the second sewage pipe 6, the third sewage pipe 7, the first water level sensor 8, the second water level sensor 9, and the angle a between the connecting line from the first water inlet to the center of the sewage treatment agent tank and the perpendicular bisector of the sewage treatment agent tank. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0036] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0037] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense. For example, they can be fixedly connected or set, or detachably connected or set, or connected or set in one piece. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The orientations or positional relationships indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] Figure 1 An embodiment of the sewage treatment and recycling device of the present invention is shown, comprising: a first treatment tank 1, a sewage treatment agent tank 2, a sewage pipe, a guide plate 3 and a second treatment tank 4.

[0040] The first treatment tank 1 is a tank structure with an upper opening; a water outlet 11 is provided at the lower part of the first treatment tank 1 .

[0041] A sewage treatment agent tank 2 has a space inside for accommodating sewage treatment agents and sewage; the sewage treatment agent tank 2 is rotatably connected to the upper part of the first treatment tank 1 through a connecting arm; a first water inlet and a second water inlet are opened on the upper part of the sewage treatment agent tank 2, and the first water inlet and the second water inlet are symmetrically connected to the left and right sides of the sewage treatment agent tank 2; a plurality of water filter holes 21 are arranged between the first water inlet and the second water inlet.

[0042] The sewage pipe comprises a first sewage pipe 5 and a second sewage pipe 6, wherein the first sewage pipe 5 and the second sewage pipe 6 are connected to the first water inlet and the second water inlet respectively.

[0043] The guide plate 3 comprises a first guide plate and a second guide plate, wherein the angle between the guide plate 3 and the horizontal line is 15-20°; the first guide plate is connected directly below the sewage treatment agent tank 2, and a first guide port is provided at the lowest end of the first guide plate; the second guide plate is connected below the first guide plate, and the inclination direction of the second guide plate is opposite to that of the first guide plate, and a second guide port is provided at the lowest end of the second guide plate; a plurality of irregular convex strips 31 are provided on the upper surface of the guide plate.

[0044] The second treatment tank 4 comprises a third water inlet 41, a water purification port 42 and a filter grille 43; the third water inlet 41 is located in the lower middle part of the second treatment tank 4, and the third water inlet 41 is connected to the water outlet through a third sewage pipe 7; the water purification port 42 is arranged in the upper part of the second treatment tank 4; the filter grille 43 is connected between the third water inlet 41 and the water purification port 42, and the filter grille 43 divides the second treatment tank 4 into relatively independent upper and lower spaces.

[0045] In the scheme of this embodiment, specifically, the sewage pipe is a hose to meet the requirement that the sewage pipe swings with the swing of the sewage treatment agent tank 2. When sewage treatment is carried out, by controlling the flow of the first sewage pipe 5 and the second sewage pipe 6 or controlling the first sewage pipe 5 and the second sewage pipe 6 to alternately convey water, the sewage treatment agent tank 2 is in a state of swinging left and right, so that the sewage treatment agent in the sewage treatment agent tank 2 and the sewage can fully react, thereby accelerating the efficiency of sewage treatment. The impurity particles in the sewage are flocculated, and the particle size of the precipitated particles is larger than the aperture of the water filter hole, so that the precipitated particles with large particle size are retained in the sewage treatment agent tank 2, while the other part of the water body flows out from the water filter hole 21 to the first treatment tank 1; this part of the water body contacts the upper surface of the guide plate 3 during the process of gradually flowing downward under the drainage action of the guide plate 3, and the impurity particles that are not filtered are intercepted by the convex strips on the upper surface of the guide plate 3, thereby achieving further filtration of the water body. The water filtered by the first sewage treatment pool 1 is drained into the second treatment pool 4, and is further filtered by the second treatment pool 4 and discharged from the water purification port 42 to obtain water that meets the recycling requirements. The sewage treatment and recycling device of the present invention does not require long-term sedimentation treatment, which greatly speeds up the efficiency of sewage treatment.

[0046] Secondly, since the first guide port and the second guide port are respectively located at the lowest ends of the first guide plate and the second guide plate, that is, the first guide port and the second guide port are close to the inner wall of the first treatment tank, the water passing through the first guide port and the second guide port continues to flow along the inner wall of the first treatment tank to the bottom of the first treatment tank, thereby reducing the interference with the water in the first treatment tank.

[0047] Furthermore, in another embodiment, the sewage treatment agent tank 2 is a spherical structure.

[0048] In the solution of this embodiment, the sewage treatment agent tank 2 is set to a spherical structure, so that it is convenient to keep the sewage treatment agent tank 2 in a left-right swinging state by controlling the flow of the first sewage pipe 5 and the second sewage pipe 6 or controlling the first sewage pipe 5 and the second sewage pipe 6 to alternately supply water, thereby promoting the sewage treatment agent in the sewage treatment agent tank 2 to fully react with the sewage, thereby accelerating the efficiency of sewage treatment.

[0049] Furthermore, in another embodiment, two connecting arms are provided, and the two connecting arms are respectively connected to the front center point of the sewage treatment agent tank 2 and the rear center point of the sewage treatment agent tank 2 from the left and right sides of the first treatment pool 1.

[0050] Further, in another embodiment, Figure 2 As shown, the angle a between the center connecting line from the first water inlet to the sewage treatment agent tank 2 and the perpendicular bisector of the sewage treatment agent tank 2 is 45-55°.

[0051] The scheme of this embodiment limits the angle between the first water inlet and the second water inlet and the perpendicular bisector of the sewage treatment agent tank 2, thereby limiting the relative positions of the first water inlet and the second water inlet in the sewage treatment agent tank 2, and further limiting the swing amplitude of the sewage treatment agent tank 2, thereby preventing the sewage treatment agent tank 2 from swinging too much and causing the sewage treatment agent tank 2 to invert, causing the precipitated particles to block the water filter holes and affect the efficiency of sewage treatment.

[0052] Furthermore, in another embodiment, a frosted layer is connected to the surface of the guide plate 3 .

[0053] In the solution of this embodiment, a frosted layer is provided on the surface of the guide plate 3, thereby increasing the contact friction between the water body and the surface of the guide plate 3, making it easier to intercept foreign particles.

[0054] Further, in another embodiment, Figure 3 As shown, the sewage treatment and recovery device also includes a first water level sensor 8, a second water level sensor 9, a water outlet switch and a controller; the first water level sensor 8 is connected to the lower middle part of the first treatment tank 1, located at a height of at least 15 cm below the guide plate 3; the second water level sensor 9 is connected to the lower part of the first treatment tank 1, located at a height of at least 10 cm above the water outlet 11; the water outlet switch is connected to the water outlet 11; the controller is respectively connected to the first water level sensor 8, the second water level sensor 9 and the water outlet switch.

[0055] The solution of this embodiment is specifically to monitor the water level of the first treatment tank 1 through the first water level sensor 8 and the second water level sensor 9. When the water level reaches the position of the first water level sensor 8, the water outlet switch is controlled to open to drain the water into the second treatment tank 4; when the water level is lower than the position of the second water level sensor 9, the water outlet switch is controlled to close to give the water a certain amount of time to settle, thereby reducing the impurity content of the water output to the second treatment tank 4.

[0056] Methods for wastewater treatment and recycling include: Preparation of sewage treatment chemicals; The sewage is introduced into the sewage treatment agent tank 2 and fully mixed with the sewage treatment agent, and filtered out through the filter holes of the sewage treatment agent tank to obtain the first water body; The first water body is diverted onto the guide plate to obtain a second water body; The second water body is further filtered through a filter grid to obtain clean water.

[0057] In the scheme of this embodiment, specifically, the sewage treatment agent is a water-soluble high molecular polymer. The sewage is sequentially subjected to the reaction and filtration of the sewage treatment agent tank, the interception of the guide plate and the filtration of the filter grid, and the impurity particles in the water body are filtered to obtain clean water.

[0058] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. They can be applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized.

Claims

1. A sewage treatment and recycling device, characterized in that: include: A first treatment tank, which is a tank structure with an upper opening; a water outlet is provided at the lower part of the first treatment tank; A sewage treatment agent tank, which has a space for accommodating sewage treatment agents and sewage; the sewage treatment agent tank is rotatably connected to the upper part of the first treatment tank through a connecting arm; the upper part of the sewage treatment agent tank is provided with a first water inlet and a second water inlet, and the first water inlet and the second water inlet are symmetrically connected to the left and right sides of the sewage treatment agent tank; a plurality of water filter holes are provided between the first water inlet and the second water inlet; A sewage pipe, comprising a first sewage pipe and a second sewage pipe, wherein the first sewage pipe and the second sewage pipe are connected to the first water inlet and the second water inlet respectively; A guide plate, comprising a first guide plate and a second guide plate, wherein the angle between the guide plate and the horizontal line is 15-20°; the first guide plate is connected directly below the sewage treatment agent tank, and a first guide port is provided at the lowest end of the first guide plate; the second guide plate is connected below the first guide plate, and the inclination direction of the second guide plate is opposite to that of the first guide plate, and a second guide port is provided at the lowest end of the second guide plate; a plurality of irregular convex strips are provided on the upper surface of the guide plate; The second treatment tank comprises a third water inlet, a water purification port, and a filter grille; the third water inlet is located in the lower middle part of the second treatment tank, and the third water inlet is connected to the water outlet through a third sewage pipe; the water purification port is arranged in the upper part of the second treatment tank; the filter grille is connected between the third water inlet and the water purification port, and the filter grille divides the second treatment tank into relatively independent upper and lower spaces.

2. The sewage treatment and recycling device according to claim 1, characterized in that: The sewage treatment agent tank is a spherical structure.

3. The sewage treatment and recycling device according to claim 1, characterized in that: The connecting arms are provided with two, and the two connecting arms are respectively connected to the front center point of the sewage treatment agent tank and the rear center point of the sewage treatment agent tank from the left and right sides of the first treatment tank.

4. The sewage treatment and recycling device according to claim 1, characterized in that: The angle between the center connecting line from the first water inlet to the sewage treatment agent tank and the median perpendicular line of the sewage treatment agent tank is 45-55°.

5. The sewage treatment and recycling device according to claim 1, characterized in that: The surface of the guide plate is connected with a frosted layer.

6. The sewage treatment and recycling device according to claim 1, characterized in that: The sewage treatment and recovery device also includes a first water level sensor, a second water level sensor, a water outlet switch and a controller; the first water level sensor is connected to the lower middle part of the first treatment tank, located at a height of at least 15 cm below the guide plate; the second water level sensor is connected to the lower part of the first treatment tank, located at a height of at least 10 cm above the water outlet; the water outlet switch is connected to the water outlet; the controller is respectively connected to the first water level sensor, the second water level sensor and the water outlet switch.

7. A method for treating and recycling sewage using the sewage treatment and recycling device as claimed in claim 1, characterized in that: include: Preparation of sewage treatment chemicals; The sewage is introduced into the sewage treatment agent tank and fully mixed with the sewage treatment agent, and filtered out through the filter holes of the sewage treatment agent tank to obtain a first water body; The first water body is diverted onto the guide plate to obtain a second water body; The second water body is further filtered through a filter grid to obtain clean water.

Images