Wastewater green treatment device

Abstract

The utility model provides a green wastewater treatment device, which belongs to the technical field of wastewater treatment, and comprises a grating grit chamber, a sand filter ecological pool and a waste heat recovery mechanism, one side of the sand filter ecological pool is fixedly connected with a drain pipe, the end part of the drain pipe is fixedly connected with a water pump, the end part of the water pump is fixedly connected with a connecting pipe, and the connecting pipe is fixedly connected with the sand filter ecological pool. The waste heat recovery mechanism comprises a pipeline, a thermal medium inlet, a thermal medium outlet, a cold medium inlet, a cold medium outlet, a heat exchange pipe and a partition plate, the pipeline is connected with the connecting pipe through the thermal medium inlet in the top, and the thermal medium outlet is formed in the bottom of one end of the pipeline. The waste heat recovery mechanism is arranged to recover heat energy generated in the waste water treatment process, efficient transfer and conversion of the heat energy are achieved through heat exchange of a hot medium and a cold medium in the pipeline, the recovered heat energy can be used for heating, washing and other occasions needing the heat energy, energy consumption is reduced, and resource recycling is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, and in particular relates to a green wastewater treatment device. Background Art

[0002] With the rapid development of industrialization and urbanization, wastewater discharge is increasing. Wastewater treatment is an important measure to protect water resources, improve water environment and promote circular economy. Untreated wastewater discharged directly into the environment will pollute water, soil and air, and have serious impacts on the ecosystem and human health.

[0003] Existing green wastewater treatment devices are unable to effectively utilize the heat in the wastewater, which leads to a huge waste of energy. What is more worrying is that if the heat energy generated during the wastewater treatment process is not properly treated and directly discharged into the environment, it may have an adverse impact on the local climate and ecosystem, such as increasing the temperature of the local area and affecting the ecological balance. Utility Model Content

[0004] The purpose of the utility model is to provide a green wastewater treatment device, aiming to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A green wastewater treatment device comprises a grit chamber, a sand filter ecological tank and a waste heat recovery mechanism, wherein a drain pipe is fixedly connected to one side of the sand filter ecological tank, a water pump is fixedly connected to the end of the drain pipe, a connecting pipe is fixedly connected to the end of the water pump, and the waste heat recovery mechanism comprises a pipeline, a hot medium inlet, a hot medium outlet, a cold medium inlet, a cold medium outlet, a heat exchange pipe and a baffle, the pipeline is connected to the connecting pipe through the hot medium inlet at the top, the hot medium outlet is arranged at the bottom of one end of the pipeline, the cold medium inlet is arranged at the bottom of the other end of the pipeline, the cold medium outlet is arranged at the top of the pipeline, and the heat exchange pipe and the baffle are both arranged in the inner cavity of the pipeline.

[0007] As a preferred solution of the utility model, the pipeline is composed of a left cover, a pipe body and a right cover, and the left cover and the right cover are fixedly connected to the pipe body through flanges.

[0008] As a preferred solution of the utility model, the hot medium inlet and the hot medium outlet are respectively located at the upper and lower sides of the left cover, and the cold medium outlet and the cold medium inlet are respectively located at the upper and lower sides of the tube body.

[0009] As a preferred solution of the utility model, the partition is located inside the left cover and the tube body respectively, and the left cover is divided into an upper cavity and a lower cavity by the partition.

[0010] As a preferred solution of the utility model, the heat exchange tube adopts a U-shaped tube, and the ports are respectively located inside the upper cavity and the lower cavity.

[0011] As a preferred solution of the utility model, a liquid inlet pipe is arranged on the top of the grid grit chamber, and a liquid discharge pipe is arranged on one side of the grid grit chamber.

[0012] As a preferred solution of the utility model, the end of the drainage pipe is connected to a connecting pipe via a flange, and the connecting pipe is fixedly installed on one side of the sand filtration ecological pool.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. This green wastewater treatment device recovers the heat energy generated during the wastewater treatment process by setting up a waste heat recovery mechanism, and realizes efficient transfer and conversion of heat energy through heat exchange between hot medium and cold medium in the pipeline. The recovered heat energy can be used in occasions requiring heat energy such as heating and washing, thereby reducing energy consumption and realizing resource recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is the right view of the overall structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the waste heat recovery mechanism of the utility model;

[0019] Figure 4 This is an exploded diagram of the pipeline structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the pipe body structure of the utility model.

[0021] In the figure: 1. Screen sand settling tank; 2. Sand filter ecological pool; 3. Waste heat recovery mechanism; 301. Pipeline; 3011. Left cover; 3012. Pipe body; 3013. Right cover; 302. Hot medium inlet; 303. Hot medium outlet; 304. Cold medium inlet; 305. Cold medium outlet; 306. Heat exchange tube; 307. Partition; 4. Drain pipe; 5. Water pump; 6. Connecting pipe; 7. Liquid inlet pipe; 8. Liquid discharge pipe; 9. Connecting pipe. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example 1

[0026] Please refer to the figure Figure 1-5 , which is the first embodiment of the utility model, and this embodiment provides a green wastewater treatment device, including a grid sand settling tank 1, a sand filter ecological pool 2 and a waste heat recovery mechanism 3. A drain pipe 4 is fixedly connected to one side of the sand filter ecological pool 2, a water pump 5 is fixedly connected to the end of the drain pipe 4, and a connecting pipe 6 is fixedly connected to the end of the water pump 5. The waste heat recovery mechanism 3 includes a pipeline 301, a hot medium inlet 302, a hot medium outlet 303, a cold medium inlet 304, a cold medium outlet 305, a heat exchange pipe 306 and a partition 307. The pipeline 301 is connected to the connecting pipe 6 through the hot medium inlet 302 at the top, the hot medium outlet 303 is arranged at the bottom of one end of the pipeline 301, the cold medium inlet 304 is arranged at the bottom of the other end of the pipeline 301, the cold medium outlet 305 is arranged at the top of the pipeline 301, and the heat exchange pipe 306 and the partition 307 are both arranged in the inner cavity of the pipeline 301.

[0027] Specifically, the pipeline 301 is composed of a left cover 3011, a pipe body 3012 and a right cover 3013. The left cover 3011 and the right cover 3013 are fixedly connected to the pipe body 3012 through flanges.

[0028] Further: the screen grit tank 1 is located at the starting part of the device, and is used for the preliminary removal of large suspended solids and sand in the wastewater. After the wastewater enters the screen grit tank 1 through the liquid inlet pipe 7, due to the inertia of the water flow and the gravity of the particles, the large suspended solids and sand are settled to the bottom of the tank and are removed. The sand filter ecological pool 2 is used to receive the wastewater discharged from the screen grit tank 1, and further purify the water quality through natural ecological filtration. The waste heat recovery mechanism 3 can effectively recover the heat energy generated in the wastewater treatment process. A drain pipe 4 is provided on one side of the sand filter ecological pool 2, which is connected to a water pump 5 for transporting the treated water to the waste heat recovery mechanism 3. The water pump 5 provides power. The wastewater in the sand filter ecological pool 2 is lifted to the connecting pipe 6, and then enters the waste heat recovery mechanism 3 for heat recovery. The wastewater enters the heat exchange tube 306 inside the pipeline 301 from the heat medium inlet 302 as a heat medium, and exchanges heat with the cold medium in the pipeline 301. The heat exchange tube 306 is designed in a U shape to ensure that the hot medium and the cold medium are fully in contact and exchange heat in their respective areas. The partition 307 separates the pipeline 301 into an upper cavity and a lower cavity to ensure efficient heat exchange. After heat exchange, the temperature of the hot medium decreases and is discharged from the hot medium outlet 303; the temperature of the cold medium increases and is discharged from the cold medium outlet 305 for use in other occasions requiring heating.

[0029] Specifically, the hot medium inlet 302 and the hot medium outlet 303 are respectively located at the upper and lower sides of the left cover 3011 , and the cold medium outlet 305 and the cold medium inlet 304 are respectively located at the upper and lower sides of the tube body 3012 .

[0030] Furthermore: wastewater enters the pipe 301 of the waste heat recovery mechanism 3 through this inlet. Since the hot medium inlet 302 is located on the upper side, it is conducive to the natural flow of wastewater under the action of gravity and enters the interior of the heat exchange tube 306. After heat exchange, the wastewater is discharged through this outlet and can be further processed or directly discharged. The cold medium inlet 304 introduces the medium that needs to be heated, enters the pipe 301 through this inlet, and exchanges heat with the wastewater. After heat exchange, the heated medium is discharged through this outlet and can be used in heating, washing and other occasions that require thermal energy.

[0031] Specifically, the partition 307 is located inside the left cover 3011 and the tube body 3012 respectively, and the left cover 3011 is divided into an upper cavity and a lower cavity by the partition 307.

[0032] Furthermore: through the setting of the partition 307, the interior of the left cover 3011 is effectively divided into two different areas: one is the area where the heat medium enters and has not yet undergone heat exchange, and the other is the area where the heat medium has completed heat exchange and is ready to be discharged. The partition 307 ensures the physical isolation between the two areas, thereby avoiding the mixing of the unexchanged heat medium and the exchanged heat medium, and ensuring the efficiency and accuracy of the heat exchange process.

[0033] Specifically, the heat exchange tube 306 is a U-shaped tube, and the ports are respectively located inside the upper cavity and the lower cavity.

[0034] Furthermore: through the design of the U-tube, the heat exchange area is increased and the heat exchange efficiency is improved.

[0035] Specifically, a liquid inlet pipe 7 is provided on the top of the grid grit chamber 1 , and a liquid discharge pipe 8 is provided on one side of the grid grit chamber 1 .

[0036] Furthermore: a liquid inlet pipe 7 is provided on the top of the screen grit chamber 1 for receiving the wastewater to be treated, and a liquid discharge pipe 8 is provided on one side for discharging the wastewater after preliminary treatment to the next treatment stage.

[0037] Specifically, the end of the drainage pipe 8 is connected to the connecting pipe 9 through a flange, and the connecting pipe 9 is fixedly installed on one side of the sand filtration ecological pool 2.

[0038] Furthermore: the connecting pipe 9 is connected to the drainage pipe 8 to ensure that the wastewater can smoothly enter the sand filtration ecological pool 2.

[0039] Working principle:

[0040] When in use, wastewater enters the screen sand settling tank 1 through the liquid inlet pipe 7. By utilizing the inertia of water flow and the gravity of particles, large suspended matter and sand are precipitated to the bottom of the tank and are thus removed. The preliminarily treated wastewater flows into the sand filter ecological tank 2 through the discharge pipe 8 and the connecting pipe 9. The wastewater undergoes natural ecological filtration in the sand filter ecological tank 2 to further purify the water quality. The sand filter ecological tank 2 utilizes the material circulation and biodegradation principles in the ecosystem to remove fine suspended matter and organic matter in the wastewater. The wastewater treated in the sand filter ecological tank 2 enters the water pump 5 through the drainage pipe 4. The water pump 5 provides power to lift the wastewater to the connecting pipe 6 and then enters the pipeline of the waste heat recovery mechanism 3. 301, wastewater as a heat medium enters the heat exchange tube 306 from the heat medium inlet 302, and the cold medium enters the interior of the tube body 3012 from the cold medium inlet 304, and heat exchange is performed in the pipe 301. The partition 307 separates the left cover 3011 into an upper cavity and a lower cavity to avoid mixing of the unexchanged heat medium with the exchanged heat medium, thereby ensuring the efficiency and accuracy of the heat exchange process. After the heat exchange, the temperature of the heat medium decreases and is discharged from the heat medium outlet 303, which can be further processed or directly discharged. At the same time, the temperature of the cold medium increases and is discharged from the cold medium outlet 305 for use in other occasions requiring heating, thereby realizing the recovery and utilization of heat energy in the wastewater.

[0041] In summary: the heat energy generated during the wastewater treatment process is recovered through the setting of the waste heat recovery mechanism 3, and the efficient transfer and conversion of heat energy is achieved through the heat exchange between the hot medium and the cold medium in the pipeline 301. The recovered heat energy can be used in occasions requiring heat energy such as heating and washing, thereby reducing energy consumption and realizing resource recycling.

[0042] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0043] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0044] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, without undue experimentation, the development effort will be a routine task of design, fabrication, and production.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A green wastewater treatment device, characterized in that: The invention comprises a screen sand settling tank (1), a sand filter ecological tank (2) and a waste heat recovery mechanism (3), wherein one side of the sand filter ecological tank (2) is fixedly connected to a drainage pipe (4), the end of the drainage pipe (4) is fixedly connected to a water pump (5), the end of the water pump (5) is fixedly connected to a connecting pipe (6), and the waste heat recovery mechanism (3) comprises a pipeline (301), a heat medium inlet (302), a heat medium outlet (303), a cold medium inlet (304), a cold medium outlet (305), a heat exchanger (306), and a heat exchanger (307). The heat pipe (306) and the partition (307) are provided, the pipe (301) is connected to the connecting pipe (6) through the hot medium inlet (302) at the top, the hot medium outlet (303) is arranged at the bottom of one end of the pipe (301), the cold medium inlet (304) is arranged at the bottom of the other end of the pipe (301), the cold medium outlet (305) is arranged at the top of the pipe (301), and the heat exchange pipe (306) and the partition (307) are both arranged in the inner cavity of the pipe (301).

2. A green wastewater treatment device according to claim 1, characterized in that: The pipeline (301) is composed of a left cover (3011), a pipe body (3012) and a right cover (3013), and the left cover (3011) and the right cover (3013) are both fixedly connected to the pipe body (3012) via flanges.

3. A green wastewater treatment device according to claim 1, characterized in that: The hot medium inlet (302) and the hot medium outlet (303) are respectively located at the upper and lower sides of the left cover (3011), and the cold medium outlet (305) and the cold medium inlet (304) are respectively located at the upper and lower sides of the tube body (3012).

4. A green wastewater treatment device according to claim 1, characterized in that: The partition (307) is located inside the left cover (3011) and the tube body (3012) respectively, and the left cover (3011) is divided into an upper cavity and a lower cavity by the partition (307).

5. A green wastewater treatment device according to claim 1, characterized in that: The heat exchange tube (306) is a U-shaped tube, and the ports are respectively located inside the upper cavity and the lower cavity.

6. A green wastewater treatment device according to claim 1, characterized in that: A liquid inlet pipe (7) is arranged on the top of the grid grit chamber (1), and a liquid discharge pipe (8) is arranged on one side of the grid grit chamber (1).

7. A green wastewater treatment device according to claim 6, characterized in that: The end of the drainage pipe (8) is connected to a connecting pipe (9) via a flange, and the connecting pipe (9) is fixedly installed on one side of the sand filtration ecological pool (2).

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