Sewage treatment system capable of recycling waste heat

Abstract

The utility model relates to a waste heat recycling sewage treatment system which comprises an upstream treatment tank, a biochemical treatment tank, electromechanical equipment, a lifting pump, a heat conduction box, an electromagnetic valve, a first temperature sensor, a second temperature sensor and an intelligent control device, a water inlet of the heat conduction box is connected with the lifting pump through a pipeline, and a water outlet of the heat conduction box is connected with the biochemical treatment pond through a pipeline; the lifting pump is arranged in the upstream treatment tank; the electromagnetic valve is arranged on a pipeline between the lifting pump and the heat conduction box; the intelligent control device is connected with the first temperature sensor, the second temperature sensor and the electromagnetic valve. According to the sewage treatment system, sewage exchanges heat with the heat conduction box and then is conveyed to the biochemical treatment pond, waste heat generated by the electromechanical equipment can be converted into water environment temperature required by microorganisms, the heat dissipation problem of the electromechanical equipment is effectively solved, the microorganisms in the biochemical treatment pond are at proper growth temperature, and the water purification efficiency of the microorganisms is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewage treatment system technical field, especially, relate to a sewage treatment system of waste heat recycling. BACKGROUND

[0002] Various microorganisms adapt to different environmental temperatures, about 5~80, when the temperature exceeds the maximum growth temperature, the protein of microorganisms denatures rapidly and the enzyme system is destroyed and loses activity, and seriously, can make microorganisms die, at low temperature, the metabolic activity of microorganisms is reduced, and then in the growth and reproduction stop state, but can maintain life. The conventional sewage treatment plant mainly uses activated sludge method to treat sewage, and the microorganisms of the activated sludge method mostly belong to mesophilic microorganisms, the optimum growth environment temperature of anaerobic mesophilic microorganisms is 25~40 (usually controlled at 33~38), and the optimum growth temperature of aerobic mesophilic microorganisms is 20~37.

[0003] In the sewage treatment system, water temperature heating is an important link, especially in cold regions or winter, through heating water temperature can guarantee the microorganism water purification efficiency. At present, the common heating mode is mainly to increase the heating pipe or utilize solar energy facilities, utilize the external heat value to heat the water environment of the sewage treatment system, so as to solve the problem of reduced microbial activity caused by low temperature environment, such as 'low temperature environment solar energy self-control backflow heating sedimentation filtration integrated pool and control method' (application / patent number: CN202310597763.8) and 'a device for utilizing solar energy to recycle hot water to strengthen soil microbial remediation' (application / patent number: CN201910231747.0), which all increase the heating pipe or solar energy facilities to increase the heat energy of the sewage treatment system or soil remediation system. At present, this way of heating the water environment of the sewage treatment system by increasing the heating pipe or solar energy facilities and utilizing the external heat value needs additional energy input, increases the operation cost, and is not energy-saving and environment-friendly.

[0004] On the other hand, the electromechanical equipment such as fan, pump group and electric control unit in the sewage treatment system also generates waste heat, and a cooling fan or air conditioner needs to be additionally arranged to cool it, which causes energy waste, and if the waste heat can be recycled and directly used for heating the water environment of the sewage treatment system, the energy consumption will be greatly reduced and the operation cost will be saved. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a sewage treatment system of waste heat recycling, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions:

[0007] The application discloses a waste heat recycling sewage treatment system which comprises an upstream treatment pool, a biochemical treatment pool and electromechanical equipment.

[0008] The waste heat recycling sewage treatment system further comprises a lifting pump, a heat conduction box, an electromagnetic valve, a first temperature sensor, a second temperature sensor and an intelligent control device.

[0009] The heat conduction box is used for absorbing heat of the electromechanical equipment, and the water inlet of the heat conduction box is connected with the lifting pump through a pipeline, and the water outlet of the heat conduction box is connected with the biochemical treatment pool through a pipeline.

[0010] The lifting pump is arranged in the upstream treatment pool and used for conveying sewage treated by the upstream treatment pool to the heat conduction box, and the sewage is conveyed to the biochemical treatment pool after heat exchange in the heat conduction box.

[0011] The electromagnetic valve is arranged on the pipeline between the lifting pump and the heat conduction box and used for controlling flow of the sewage.

[0012] The first temperature sensor is used for monitoring the temperature of the electromechanical equipment in real time.

[0013] The second temperature sensor is used for monitoring the temperature of the sewage in the biochemical treatment pool in real time.

[0014] The intelligent control device is connected with the first temperature sensor, the second temperature sensor and the electromagnetic valve respectively, and is used for controlling opening and closing of the electromagnetic valve according to the temperature monitored by the first temperature sensor and the second temperature sensor.

[0015] Preferably, the heat conduction box is composed of heat conduction plates, the water inlet and the water outlet of the heat conduction box are provided with flow guide pipes, the flow guide pipes are provided with loose joints, and a plurality of flow guide plates are arranged in the cavity of the heat conduction box in a staggered mode, and internal flow channels are formed through the plurality of flow guide plates.

[0016] Preferably, the flow guide plates have slopes.

[0017] Preferably, the bottom of the heat conduction box is provided with a plurality of rollers, and the side surface of the heat conduction box is provided with a handle.

[0018] Preferably, a check valve is further arranged on the pipeline between the lifting pump and the heat conduction box.

[0019] Preferably, a gate valve is further arranged on the pipeline between the lifting pump and the heat conduction box.

[0020] The waste heat recycling sewage treatment system has the following beneficial effects.

[0021] 1、The sewage treatment system exchanges heat between sewage and the heat conduction box, and then transports the sewage to the biochemical treatment tank, so that the waste heat generated by the mechanical and electrical equipment is converted into the water environment temperature required by microorganisms, which effectively solves the heat dissipation problem of the mechanical and electrical equipment, and makes the microorganisms in the biochemical treatment tank be at a suitable growth temperature, ensures the water purification efficiency of the microorganisms, and fully utilizes the heat inside the system, so that additional heating system and heat dissipation system are not needed, energy consumption is reduced, and operation cost is saved.

[0022] 2、The sewage treatment system is also provided with an electromagnetic valve, a first temperature sensor, a second temperature sensor and an intelligent control device, the first temperature sensor monitors the temperature of the mechanical and electrical equipment in real time, and transmits the temperature signal to the intelligent control device, the second temperature sensor monitors the temperature of the sewage in the biochemical treatment tank in real time, and transmits the temperature signal to the intelligent control device, and the intelligent control device controls the opening and closing of the electromagnetic valve according to the temperature monitored by the first temperature sensor and the second temperature sensor, so as to control the circulation of the sewage and realize automatic management and control. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of the sewage treatment system of the utility model;

[0024] Figure 2 It is a structural schematic view of the heat conduction box of the utility model;

[0025] Figure 3 It is a structural schematic view of the embodiment 1 of the utility model.

[0026] In the drawing: 1, upstream treatment tank; 2, biochemical treatment tank; 3, mechanical and electrical equipment; 4, booster pump; 5, heat conduction box; 51, heat conduction plate; 52, cavity; 53, flow guide pipe; 54, loose joint; 55, flow guide plate; 56, handle; 57, roller; 6, electromagnetic valve; 7, first temperature sensor; 8, second temperature sensor; 9, intelligent control device; 10, check valve; 11, gate valve; 100, water inlet adjusting tank; 200, sewage treatment equipment; 300, fan; 400, valve well; 500, fan cover. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely below in combination with the drawings of the utility model.

[0028] The technical scheme of the utility model will be described clearly and completely below in combination with embodiments, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0029] In the description of the utility model, it needs to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are the orientation or positional relation based on the orientation or positional relation shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model indicated or implied by the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0030] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited. In addition, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] Reference Figures 1-2 A waste heat recycling sewage treatment system, comprising an upstream treatment tank 1, a biochemical treatment tank 2 and a mechanical and electrical equipment 3, sewage is transported to the biochemical treatment tank 2 for biochemical treatment after being treated by the upstream treatment tank 1, and the mechanical and electrical equipment 3 is used for providing power required for operation of the sewage treatment system.

[0032] Wherein, the upstream treatment tank 1 is a sewage treatment tank before the biochemical treatment tank 2, including a water inlet adjusting tank, a sedimentation tank, a flotation tank and the like, the upstream treatment tank 1 can be one or more of them, the biochemical treatment tank 2 is a sewage treatment tank for removing organic matter and nutrient salt in sewage by using metabolic activity of microorganisms, including anaerobic tank, anoxic tank, aerobic tank and the like, the biochemical treatment tank 2 can be one or more of them, the mechanical and electrical equipment 3 is a fan, a pump group, an electric control unit and the like, which provides power for operation of the sewage treatment system and generates waste heat.

[0033] The sewage treatment system of the utility model further comprises a booster pump 4, a heat conduction box 5, a solenoid valve 6, a first temperature sensor 7, a second temperature sensor 8 and an intelligent control device 9.

[0034] The heat conduction box 5 is used for absorbing heat of the electromechanical equipment 3, the water inlet of the heat conduction box 5 is connected with the lifting pump 4 through a pipeline, and the water outlet of the heat conduction box 5 is connected with the biochemical treatment tank 2 through a pipeline; wherein, the heat conduction box 5 can select different heat collection modes according to the structure of the electromechanical equipment 3, for the case that the electromechanical equipment 3 has high integration degree and mainly radiates from one side, a group of heat conduction boxes 5 can be installed close to the heat radiation surface of the electromechanical equipment 3, for the case that the electromechanical equipment 3 uniformly radiates, multiple groups of heat conduction boxes 5 can be installed close to the electromechanical equipment 3 or a cover type structure is selected to collect heat of the whole heat source and then transfer the heat to the heat conduction box 5.

[0035] The lifting pump 4 is arranged in the upstream treatment tank 1 and used for conveying sewage treated by the upstream treatment tank 1 to the heat conduction box 5, and the sewage is conveyed to the biochemical treatment tank 2 after heat exchange in the heat conduction box 5.

[0036] The electromagnetic valve 6 is arranged on a pipeline between the lifting pump 4 and the heat conduction box 5 and used for controlling flow of the sewage.

[0037] The first temperature sensor 7 is used for monitoring temperature of the electromechanical equipment 3 in real time, the first temperature sensor 7 can be directly connected with the electromechanical equipment 3 or arranged in an environment where the electromechanical equipment 3 is located, and the selection of the heat collection mode is based on the first temperature sensor 7.

[0038] The second temperature sensor 8 is used for monitoring temperature of the sewage in the biochemical treatment tank 2 in real time, and the second temperature sensor 8 is arranged in the biochemical treatment tank 2.

[0039] The intelligent control device 9 is connected with the first temperature sensor 7, the second temperature sensor 8 and the electromagnetic valve 6 respectively, and used for controlling opening and closing of the electromagnetic valve 6 according to the temperature monitored by the first temperature sensor 7 and the second temperature sensor 8.

[0040] When the sewage treatment system is running, the heat conduction box 5 absorbs waste heat generated by the electromechanical equipment 3, the lifting pump 4 conveys sewage treated by the upstream treatment tank 1 to the heat conduction box 5, the sewage exchanges heat with the heat conduction box 5 when flowing through the heat conduction box 5, the temperature of the sewage is increased after heat exchange, and finally the sewage is conveyed to the biochemical treatment tank 2 for biochemical treatment.

[0041] The sewage treatment system conveys the sewage to the biochemical treatment tank 2 after heat exchange with the heat conduction box 5, can convert waste heat generated by the electromechanical equipment 3 into water environment temperature required by microorganisms, effectively solves the problem of heat dissipation of the electromechanical equipment 3, makes the microorganisms in the biochemical treatment tank 2 at a suitable growth temperature, ensures water purification efficiency of the microorganisms, fully utilizes heat inside the system, does not need to additionally add a heating system and a heat dissipation system, reduces energy consumption and saves operation cost.

[0042] In addition, the sewage treatment system is also provided with an electromagnetic valve 6, a first temperature sensor 7, a second temperature sensor 8 and an intelligent control device 9. The first temperature sensor 7 monitors the temperature of the electromechanical equipment 3 in real time and transmits the temperature signal to the intelligent control device 9. The second temperature sensor 8 monitors the temperature of the sewage in the biochemical treatment tank 2 in real time and transmits the temperature signal to the intelligent control device 9. The intelligent control device 9 controls the opening and closing of the electromagnetic valve 6 according to the temperature monitored by the first temperature sensor 7 and the second temperature sensor 8, so as to control the circulation of the sewage and realize automatic management and control.

[0043] In a specific embodiment, the heat conduction box 5 is composed of a heat conduction plate 51. The water inlet and the water outlet of the heat conduction box 5 are provided with flow guide pipes 53. The flow guide pipes 53 are provided with union joints 54, which facilitate pipeline connection. The cavity 52 of the heat conduction box 5 is provided with a plurality of flow guide plates 55 arranged alternately. The plurality of flow guide plates 55 form internal flow channels, which increase the time of sewage flowing through the heat conduction box 5 and fully perform heat exchange.

[0044] In a specific embodiment, the flow guide plate 55 has a slope, and the plate surface slope is 1%. This avoids the accumulation and blockage of sludge in the flow channel.

[0045] In a specific embodiment, the bottom of the heat conduction box 5 is provided with a roller 57, and the side surface of the heat conduction box 5 is provided with a handle 56, which facilitates the installation and disassembly of the heat conduction box 5.

[0046] In a specific embodiment, a check valve 10 is further arranged on the pipeline between the lifting pump 4 and the heat conduction box 5, which prevents backflow of the sewage.

[0047] In a specific embodiment, a gate valve 11 is further arranged on the pipeline between the lifting pump 4 and the heat conduction box 5, which further controls the circulation of the sewage.

[0048] The sewage treatment system is not limited by the construction form and the process main body, and can be widely applied to aboveground, semi-underground and aboveground structures, existing mature, emerging or improved processes, and new construction and reconstruction projects. It does not need to be greatly demolished and constructed. The following will be further described with specific examples.

[0049] Example 1

[0050] Reference Figure 3 The treatment scale is ≤500m 3The distributed small sewage treatment underground equipment of / d is taken as an example for modification. The distributed small sewage treatment underground equipment itself comprises a water inlet adjusting pool 100 (i.e. an upstream treatment pool 1), a sewage treatment equipment 200 (i.e. a biochemical treatment pool 2), a fan 300 (i.e. a mechanical and electrical equipment 3) and a valve well 400. The sewage treatment equipment 200 is an integrated equipment of an anaerobic pool, an anoxic pool and an aerobic pool. The outdoor temperature in winter is -5-10, and the water environment temperature of microorganisms is 4-10. The outdoor temperature in summer is 30-40, and the water environment temperature of microorganisms is 17-23. The normal working temperature range of the fan 300 is 30-90.

[0051] On the basis of the above structure, a lifting pump 4 is added in the water inlet adjusting pool 100, the fan 300 is covered by a fan cover 500, a heat conduction box 5 is arranged in the fan cover 500, the water inlet of the heat conduction box 5 is connected with the lifting pump 4 through a pipeline, the water outlet is connected with the sewage treatment equipment 200 through a pipeline, an electromagnetic valve 6, a gate valve 11 and a check valve 10 are arranged on the pipeline between the lifting pump 4 and the heat conduction box 5, the electromagnetic valve 6, the gate valve 11 and the check valve 10 are arranged in the valve well 400, a first temperature sensor 7, a second temperature sensor 8 and a smart control device 9 are further arranged, and the smart control device 9 is connected with the first temperature sensor 7, the second temperature sensor 8 and the electromagnetic valve 6. It is worth mentioning that the original sewage conveying path from the water inlet adjusting pool 100 to the sewage treatment equipment 200 can be retained after the modification.

[0052] When the distributed small sewage treatment underground equipment is running, the heat conduction box 5 absorbs the waste heat generated by the fan 300, the lifting pump 4 conveys the sewage treated by the water inlet adjusting pool 100 to the heat conduction box 5, the sewage exchanges heat with the heat conduction box 5 when flowing through the heat conduction box 5, the temperature of the sewage is increased, and finally the sewage is conveyed to the sewage treatment equipment 200 for biochemical treatment. The distributed small sewage treatment underground equipment can convert the waste heat generated by the fan 300 into the water environment temperature required by microorganisms, effectively solves the heat dissipation problem of the fan 300, and makes the microorganisms in the sewage treatment equipment 200 at a suitable growth temperature, thereby ensuring the water purification efficiency of the microorganisms.

[0053] The first temperature sensor 7 monitors the temperature of the fan 300 in real time and transmits the temperature signal to the smart control device 9. The second temperature sensor 8 monitors the temperature of the sewage in the sewage treatment equipment 200 in real time and transmits the temperature signal to the smart control device 9. The smart control device 9 controls the opening and closing of the electromagnetic valve 6 according to the temperatures monitored by the first temperature sensor 7 and the second temperature sensor 8, thereby controlling the flow of the sewage and realizing automatic management and control.

[0054] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A waste heat recycling sewage treatment system, comprising an upstream treatment tank, a biochemical treatment tank and electromechanical equipment, sewage is treated in the upstream treatment tank and then delivered to the biochemical treatment tank for biochemical treatment, and the electromechanical equipment is used to provide power required for operation of the sewage treatment system, characterized in that: a booster pump, a heat conduction box, an electromagnetic valve, a first temperature sensor, a second temperature sensor and a smart control device are further included; the heat conduction box is used to absorb heat of the electromechanical equipment, an inlet thereof is connected with the booster pump through a pipeline, and an outlet thereof is connected with the biochemical treatment tank through a pipeline; the booster pump is arranged in the upstream treatment tank and used to deliver sewage treated in the upstream treatment tank to the heat conduction box, and the sewage is delivered to the biochemical treatment tank after heat exchange in the heat conduction box; the electromagnetic valve is arranged on a pipeline between the booster pump and the heat conduction box and used to control flow of the sewage; the first temperature sensor is used to monitor temperature of the electromechanical equipment in real time; the second temperature sensor is used to monitor temperature of the sewage in the biochemical treatment tank in real time; and the smart control device is connected with the first temperature sensor, the second temperature sensor and the electromagnetic valve respectively and used to control opening and closing of the electromagnetic valve according to the temperatures monitored by the first temperature sensor and the second temperature sensor. The heat conduction box is composed of heat conduction plates, the inlet and the outlet of the heat conduction box are each provided with a flow guide pipe, the flow guide pipe is provided with a loose joint, a plurality of flow guide plates are arranged in the cavity of the heat conduction box in a staggered manner, and internal flow channels are formed through the plurality of flow guide plates. The flow guide plates have slopes. The bottom of the heat conduction box is provided with a roller, and the side surface of the heat conduction box is provided with a handle. A check valve is further arranged on the pipeline between the booster pump and the heat conduction box. A gate valve is further arranged on the pipeline between the booster pump and the heat conduction box. ​ ​ 2. The waste heat recovery and reuse sewage treatment system according to claim 1, characterized in that: ​ 3. The waste heat recovery and reuse sewage treatment system according to claim 2, characterized in that: ​ 4. The waste heat recovery and reuse sewage treatment system according to claim 1, characterized in that: ​ 5. The waste heat recovery and reuse sewage treatment system of claim 1, wherein: ​ 6. The waste heat recovery and reuse sewage treatment system of claim 1, wherein: ​

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