A magnetic levitation heat pump system for sewage waste heat recovery purification

Abstract

The utility model discloses a kind of for sewage waste heat recovery purification's magnetic suspension heat pump system, it is characterized in that, including magnetic suspension heat pump, anaerobic tank, adjust even pool and sewage station export, the magnetic suspension heat pump includes condenser, compressor and evaporator, the evaporator is connected with compressor, the compressor is connected with condenser, sewage discharged by the sewage station export is contacted heat exchange with evaporator through blowdown pipeline, the adjust even water of adjust even pool is contacted heat exchange with condenser through adjust even pipeline, the evaporator is also connected anaerobic tank through heat delivery pipeline. The utility model absorbs heat in sewage by using magnetic suspension heat pump, and heat in sewage is effectively utilized by magnetic suspension heat pump, adjust water is discharged into anaerobic tank after being heated, maintain the temperature of anaerobic tank, save energy.

Description

Technical Field

[0001] This utility model relates to the field of wastewater waste heat treatment technology, and in particular to a magnetic levitation heat pump system for wastewater waste heat recovery and purification. Background Technology

[0002] With the acceleration of urbanization and the expansion of industrial scale, the energy efficiency and purification capacity of wastewater treatment systems face severe challenges. In traditional wastewater treatment processes, the equalization tank, as a key unit for water quality and quantity regulation, typically sends its effluent directly to the anaerobic tank for biodegradation. However, this process has several drawbacks: First, the effluent temperature from the equalization tank is generally lower than the operating requirements of the anaerobic tank. Direct discharge leads to a sharp drop in temperature within the tank, severely inhibiting the metabolic activity of anaerobic microorganisms such as methanogens. Experimental data shows that when the water temperature drops from 35℃ to 25℃, the organic matter degradation rate decreases by more than 40%, and the risk of volatile fatty acid accumulation increases threefold, easily triggering system acidification and collapse. Second, the low-grade heat energy generated during wastewater treatment is not effectively recovered. For example, the effluent temperature from the primary sedimentation tank and biological treatment tank often reaches 25-30℃ and remains unutilized, being directly lost through the drainage network, resulting in energy waste.

[0003] In the existing technology, the heat gap of the anaerobic pool is compensated by an external heat source, but there are limitations: (1) Electric heating is extremely energy-intensive. For example, for a sewage treatment plant with a treatment capacity of 100,000 tons / day, maintaining the constant temperature of the anaerobic pool requires an additional 2,000 kWh / day of electricity, which increases the annual operating cost by more than one million yuan; (2) Although gas boiler heating is slightly more energy-efficient, it has nitrogen oxide emission pollution and is limited by the coverage of the natural gas pipeline network. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a magnetic levitation heat pump system for wastewater waste heat recovery and purification, which absorbs heat from wastewater by using a magnetic levitation heat pump, effectively utilizes the heat from the wastewater through the magnetic levitation heat pump, and discharges the regulated water into the anaerobic tank after heating it up, thereby maintaining the temperature of the anaerobic tank. This system aims to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a magnetic levitation heat pump system for wastewater waste heat recovery and purification, including a magnetic levitation heat pump, an anaerobic tank, a equalization tank, and a wastewater station outlet. The magnetic levitation heat pump includes a condenser, a compressor, and an evaporator. The evaporator is connected to the compressor, and the compressor is connected to the condenser. The wastewater discharged from the wastewater station outlet exchanges heat with the evaporator through a sewage pipe. The equalization water in the equalization tank exchanges heat with the condenser through an equalization pipe. The evaporator is also connected to the anaerobic tank through a heat supply pipe.

[0006] As a further improvement of this utility model: the anaerobic tank is also provided with a drainage pipe, and the anaerobic tank is connected to the sewage station outlet through the drainage pipe.

[0007] As a further improvement of this utility model: the sewage discharge pipe includes a first sewage discharge pipe and a second sewage discharge pipe, the sewage station outlet is connected to the evaporator through the first sewage discharge pipe, and the sewage station outlet is also connected to the evaporator through the second sewage discharge pipe.

[0008] As a further improvement of this utility model: a water pump is also provided on the first sewage pipe, which is used to pump sewage to the evaporator.

[0009] As a further improvement of this utility model: the equalization tank includes a first equalization tank and a second equalization tank, the equalization pipeline includes an equalization branch pipe and an equalization main pipe, one end of the equalization main pipe is connected to the condenser, and the first equalization tank and the second equalization tank are respectively connected to the equalization main pipe through the equalization branch pipe.

[0010] As a further improvement of this utility model: a regulating water pump is provided on the regulating branch pipe, and the regulating water pump is used to pump regulating water to the condenser.

[0011] As a further improvement of this utility model: the anaerobic tank includes a first anaerobic tank, a second anaerobic tank and a third anaerobic tank, the heat delivery pipeline includes a main heat delivery pipe and a branch heat delivery pipe, one end of the main heat delivery pipe is connected to the condenser, and the first anaerobic tank, the second anaerobic tank and the third anaerobic tank are respectively connected to the main heat delivery pipe through the branch heat delivery pipe.

[0012] As a further improvement of this utility model: a water pump is provided on the heat delivery branch pipe, and the water pump is used to pump the heat-exchanged equalized water to the first anaerobic tank, the second anaerobic tank and the third anaerobic tank.

[0013] As a further improvement of this utility model: the first anaerobic tank, the second anaerobic tank and the third anaerobic tank are respectively connected to the sewage station outlet through drainage pipes.

[0014] As a further improvement of this utility model, the temperature of the anaerobic tank is set to 32-35℃.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, a condenser, compressor, and evaporator are used in a magnetic levitation heat pump. By contacting sewage with the evaporator, the refrigerant in the evaporator absorbs heat from the sewage and evaporates into a low-temperature, low-pressure refrigerant gas. The compressor compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure refrigerant gas. The high-temperature, high-pressure refrigerant gas exchanges heat with the equalization water in the equalization tank in the condenser. After the equalization water is heated, it is discharged into the anaerobic tank through a heat delivery pipe. By using a magnetic levitation heat pump to absorb heat from the sewage and effectively utilize the heat from the sewage, the equalization water is heated and discharged into the anaerobic tank, maintaining the temperature of the anaerobic tank and saving energy.

[0017] 2. This utility model uses sewage from the sewage station outlet as a low-temperature heat source, which is pumped into the magnetic levitation heat pump unit by the pump of the first sewage pipe. The refrigerant absorbs the heat from the sewage in the evaporator and evaporates into a low-temperature, low-pressure gas, thereby reducing energy consumption and effectively saving energy.

[0018] 3. This utility model uses sewage as a low-temperature heat source to exchange heat with refrigerant in a heat pump evaporator. The refrigerant absorbs heat from the sewage and transforms from a liquid state to a low-temperature, low-pressure gaseous state, thus completing the heat absorption. The compressor consumes some electrical energy. The low-temperature, low-pressure refrigerant gas is compressed into a high-temperature, high-pressure gaseous refrigerant. The high-temperature, high-pressure refrigerant gas enters the condenser and releases heat through the condensation process to heat and regulate the water, thus efficiently completing heat recovery, reducing heating energy consumption, and improving energy efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] The diagram is labeled as follows: 1. Magnetic levitation heat pump; 2. Sewage station outlet; 31. First equalization tank; 32. Second equalization tank; 41. First anaerobic tank; 42. Second anaerobic tank; 43. Third anaerobic tank; 51. First sewage pipe; 52. Second sewage pipe; 61. Main equalization pipe; 62. Branch equalization pipe; 63. Regulating water pump; 71. Main heat supply pipe; 72. Branch heat supply pipe; 73. Water supply pump; 8. Drainage pipe. Detailed Implementation

[0021] In order to clearly and completely understand the technical solution, the present invention will be further described in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0023] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0025] An embodiment of this utility model provides a magnetic levitation heat pump 1 system for wastewater waste heat recovery and purification, including a magnetic levitation heat pump 1, an anaerobic tank, a equalization tank, and a wastewater station outlet 2. The magnetic levitation heat pump 1 includes a condenser, a compressor, and an evaporator. The evaporator is connected to the compressor, and the compressor is connected to the condenser. Wastewater discharged from the wastewater station outlet 2 exchanges heat with the evaporator through a sewage discharge pipe. The equalization water in the equalization tank exchanges heat with the condenser through an equalization pipe. The evaporator is also connected to the anaerobic tank through a heat supply pipe.

[0026] In this invention, a condenser, compressor, and evaporator are used in a magnetic levitation heat pump 1. By contacting the wastewater with the evaporator, the refrigerant in the evaporator absorbs heat from the wastewater and evaporates into a low-temperature, low-pressure refrigerant gas. The compressor compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure refrigerant gas. The high-temperature, high-pressure refrigerant gas exchanges heat with the equalization water in the equalization tank in the condenser. After the equalization water is heated, it is discharged into the anaerobic tank through a heat delivery pipe. By using the magnetic levitation heat pump 1 to absorb heat from the wastewater and effectively utilize the heat from the wastewater, the equalization water is heated and discharged into the anaerobic tank, maintaining the temperature of the anaerobic tank and saving energy.

[0027] In one embodiment of this invention, the sewage discharge pipe includes a first sewage pipe 51 and a second sewage pipe 52. The sewage station outlet 2 is connected to the evaporator via the first sewage pipe 51, and the sewage station outlet 2 is also connected to the evaporator via the second sewage pipe 52. Further, a water pump is installed on the first sewage pipe 51 to pump sewage to the evaporator. This invention uses the sewage from the sewage station outlet as a low-temperature heat source, which is pumped into the magnetic levitation heat pump unit by the water pump on the first sewage pipe 51. The refrigerant absorbs heat from the sewage in the evaporator and evaporates into a low-temperature, low-pressure gas, reducing energy consumption and effectively saving energy. The sewage after heat exchange is discharged back to the sewage station outlet via the second sewage pipe 52.

[0028] In one embodiment of the present invention, the equalization tank includes a first equalization tank 31 and a second equalization tank 32, and the equalization pipeline includes an equalization branch pipe 62 and an equalization main pipe 61. One end of the equalization main pipe 61 is connected to a condenser, and the first equalization tank 31 and the second equalization tank 32 are respectively connected to the equalization main pipe 61 through the equalization branch pipe 62.

[0029] Furthermore, a regulating water pump 63 is provided on the regulating branch pipe 62, which is used to pump regulating water to the condenser.

[0030] In this embodiment, the equalization tank acts as a buffer unit, balancing the fluctuations in the effluent from the wastewater purification module with the dynamic demands of the condenser. This prevents a decrease in heat transfer efficiency due to insufficient instantaneous flow or overload, while ensuring that the regulating water supplied to the condenser is clean and has stable physical properties, avoiding scaling or corrosion on the heat exchange surfaces, and maintaining the condenser's high-efficiency heat transfer performance. The regulating water pump 63 precisely pumps equalization water according to the condenser's heat load requirements, allocating the equalization water from the first equalization tank 31 and the second equalization tank 32 according to demand.

[0031] In one embodiment of the present invention, the anaerobic tank includes a first anaerobic tank 41, a second anaerobic tank 42 and a third anaerobic tank 43, and the heat supply pipeline includes a main heat supply pipe 71 and a branch heat supply pipe 72. One end of the main heat supply pipe 71 is connected to a condenser, and the first anaerobic tank 41, the second anaerobic tank 42 and the third anaerobic tank 43 are respectively connected to the main heat supply pipe 71 through the branch heat supply pipe 72.

[0032] Furthermore, a water pump 73 is installed on the heat supply branch pipe 72, and the water pump 73 is used to pump the heat-exchanged equalized water to the first anaerobic tank 41, the second anaerobic tank 42 and the third anaerobic tank 43.

[0033] In this embodiment, after the equalization water absorbs industrial waste heat in the condenser, it is distributed to the anaerobic tanks through the main heat supply pipe 71. The first anaerobic tank 41, the second anaerobic tank 42, and the third anaerobic tank 43 receive the equalization water through independent heat supply branch pipes 72. The water pump 73 adjusts the equalization water flow rate in real time according to the feedback from the anaerobic tank temperature sensor, avoiding the temperature unevenness problem caused by traditional single-pipe heating, and maintaining the temperature of the first anaerobic tank 41, the second anaerobic tank 42, and the third anaerobic tank 43 at 32-35℃, thereby improving the degradation rate of organic matter in wastewater by anaerobic microorganisms.

[0034] In one embodiment of this utility model, the anaerobic tank is further provided with a drainage pipe 8, and the anaerobic tank is connected to the sewage station outlet through the drainage pipe 8. Further, the first anaerobic tank 41, the second anaerobic tank 42, and the third anaerobic tank 43 are respectively connected to the sewage station outlet through the drainage pipe 8.

[0035] In this embodiment, when the anaerobic tank experiences a sudden change in influent load or requires maintenance, the drain pipe can quickly discharge the water in the tank to prevent overflow or excessive pressure in the tank, ensuring the stability of the microbial community. Furthermore, the water level in the anaerobic tank can be controlled through the drain pipe 8 to ensure that anaerobic microorganisms effectively degrade organic matter and improve treatment efficiency.

[0036] In one embodiment of this invention, the temperature of the anaerobic tank is set to 32-35℃. In this embodiment, the temperature range of 32-35℃ is the optimal growth temperature for anaerobic microorganisms, which can maximize the degradation rate of organic matter in wastewater by anaerobic microorganisms and achieve wastewater purification.

[0037] In summary, any other corresponding modifications made by those skilled in the art after reading this utility model document, based on the technical solution and concept of this utility model without creative mental effort, shall all fall within the scope of protection of this utility model.

Claims

1. A magnetic levitation heat pump system for wastewater waste heat recovery and purification, characterized in that, The system includes a magnetic levitation heat pump, an anaerobic tank, a equalization tank, and a wastewater discharge outlet. The magnetic levitation heat pump includes a condenser, a compressor, and an evaporator. The evaporator is connected to the compressor, and the compressor is connected to the condenser. Wastewater discharged from the wastewater discharge outlet exchanges heat with the evaporator through a sewage pipe. The equalization water in the equalization tank exchanges heat with the condenser through an equalization pipe. The evaporator is also connected to the anaerobic tank through a heat supply pipe.

2. The magnetic levitation heat pump system for wastewater waste heat recovery and purification according to claim 1, characterized in that, The anaerobic tank is also equipped with a drainage pipe, which connects the anaerobic tank to the sewage treatment plant's outlet.

3. A magnetic levitation heat pump system for wastewater waste heat recovery and purification according to claim 1, characterized in that, The sewage discharge pipeline includes a first sewage discharge pipe and a second sewage discharge pipe. The sewage station outlet is connected to the evaporator through the first sewage discharge pipe, and the sewage station outlet is also connected to the evaporator through the second sewage discharge pipe.

4. A magnetic levitation heat pump system for wastewater waste heat recovery and purification according to claim 3, characterized in that, A water pump is also installed on the first sewage pipe, which is used to pump sewage to the evaporator.

5. A magnetic levitation heat pump system for wastewater waste heat recovery and purification according to claim 1, characterized in that, The equalization tank includes a first equalization tank and a second equalization tank, and the equalization pipeline includes an equalization branch pipe and an equalization main pipe. One end of the equalization main pipe is connected to the condenser, and the first equalization tank and the second equalization tank are respectively connected to the equalization main pipe through the equalization branch pipe.

6. A magnetic levitation heat pump system for wastewater waste heat recovery and purification according to claim 5, characterized in that, A regulating water pump is installed on the regulating branch pipe, and the regulating water pump is used to pump regulating water to the condenser.

7. A magnetic levitation heat pump system for wastewater waste heat recovery and purification according to claim 1, characterized in that, The anaerobic tank includes a first anaerobic tank, a second anaerobic tank, and a third anaerobic tank. The heat supply pipeline includes a main heat supply pipe and a branch heat supply pipe. One end of the main heat supply pipe is connected to the condenser. The first anaerobic tank, the second anaerobic tank, and the third anaerobic tank are respectively connected to the main heat supply pipe through the branch heat supply pipes.

8. A magnetic levitation heat pump system for wastewater waste heat recovery and purification according to claim 7, characterized in that, A water pump is installed on the heat delivery branch pipe, which is used to pump the heat-exchanged equalized water to the first anaerobic tank, the second anaerobic tank and the third anaerobic tank.

9. A magnetic levitation heat pump system for wastewater waste heat recovery and purification according to claim 8, characterized in that, The first anaerobic tank, the second anaerobic tank, and the third anaerobic tank are each connected to the sewage station's outlet via drainage pipes.

10. A magnetic levitation heat pump system for wastewater waste heat recovery and purification according to claim 1, characterized in that, The temperature of the anaerobic tank is set at 32-35℃.

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