Bioreactor heating device and cold region sewage treatment device

Abstract

The bioreactor heating device and the cold region sewage treatment device comprise a frame body, a water inlet pipeline and a water outlet pipeline are communicated with the frame body, and a frame of the frame body comprises a photothermal conversion layer, a middle heat storage layer and an inner aluminum plate. The middle heat storage layer comprises a temperature regulation and control layer and a redundant heat storage layer in which a composite phase change material is placed; the temperature regulation and control layer is composed of a plurality of aluminum pipes which are arranged in a row and are internally provided with composite phase change materials, and sealing covers are arranged at the detachable joints of the aluminum pipes. According to the utility model, proper energy storage can be carried out according to actual requirements, solar heat is used for supplying heat to the biological treatment unit, and the activity of microorganisms is improved.

Description

Technical Field

[0001] The utility model belongs to the field of cold region sewage treatment, and in particular relates to a bioreactor heating device and a cold region sewage treatment device. Background Art

[0002] The battle against pollution must reduce pollution and reduce carbon emissions. Biological methods use the metabolism of microorganisms to convert pollutants in water into stable and harmless substances, which is the mainstream method of sewage purification at present. However, the growth, reproduction and activity of microorganisms are restricted under low temperature stress, and the efficiency of sewage treatment decreases. Taking nitrifying bacteria as an example, their optimal growth temperature is 25-30℃. When the temperature is lower than 10℃, some enter a dormant state, and when the temperature is lower than 4℃, the metabolic capacity is lost. At the same time, the growth, reproduction and metabolism of denitrifying bacteria are also inhibited, and the effluent ammonia nitrogen (NH4-N) and total nitrogen (TN) do not meet the standards. Low temperature has become a key factor restricting sewage treatment in cold regions. Regulating operating parameters such as sludge load, hydraulic retention time, and dissolved oxygen can stabilize the effect of biological low-temperature treatment, but the treatment cost and infrastructure cost will increase accordingly; geothermal, water source / air source heat pumps, gas, etc. can maintain the normal operation of sewage treatment facilities in cold regions in winter through heating and insulation, but the regional and spatial limitations are obvious. Solar energy has the advantages of being green, environmentally friendly, cheap and easily available. Using solar energy to provide heat for sewage treatment facilities is of great significance in breaking the barriers of low efficiency and high cost of sewage operation in the low temperature season and improving quality and efficiency through green and low-carbon energy. Utility Model Content

[0003] In view of the above technical problems, the utility model provides a bioreactor heating device, which improves the efficiency of solar energy utilization, can perform appropriate energy storage according to actual needs, utilizes solar heat to heat the biological treatment unit, and enhances the activity of microorganisms.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A bioreactor heating device comprises a frame, wherein the frame is connected with a water inlet pipe 1 and a water outlet pipe 2, the frame frame comprises a light-heat conversion layer 7, a middle heat storage layer and an inner aluminum plate 8, the middle heat storage layer comprises a temperature control layer 6 and an excess heat storage layer 9 with a composite phase change material placed therein; the temperature control layer 6 is a plurality of aluminum tubes 63 arranged in a row and having a composite phase change material 62 placed therein, and a sealing cover 61 is detachably connected to the aluminum tube 63.

[0006] As a more optimal technical solution of the present invention, an electric heater 64 is arranged around the aluminum tube 63 to directly heat the sewage in the bioreactor.

[0007] As a more optimal technical solution of the present invention, the light-to-heat conversion layer 7 is a glass plate coated with the light-to-heat conversion material 3 .

[0008] As a more optimal technical solution of the present utility model, a water volume controller 4 is installed on both the water inlet pipe 1 and the water outlet pipe 2 .

[0009] As a more optimal technical solution of the present utility model, temperature sensors 5 are installed on both the water inlet pipe 1 and the water outlet pipe 2 .

[0010] As a more optimal technical solution of the present utility model, the photothermal conversion material 3 is a biochar photothermal conversion material.

[0011] As a more optimal technical solution of the present invention, the composite phase change material 62 is a mixture of butyl stearate and biochar.

[0012] As a more optimal technical solution of the present invention, the temperature sensor 5 is installed on the base 53 , and the temperature sensor 5 includes a temperature sensor 51 and a display screen 52 .

[0013] Another object of the utility model is to provide a cold region sewage treatment device, wherein the bioreactor of the sewage treatment device uses a bioreactor heating device.

[0014] The beneficial effects are as follows:

[0015] The utility model can process more sewage at the same time by parallel or series connection, instead of taking up a large space to place some heat storage tanks like other reactors, thus saving precious land resources.

[0016] The bioreactor heating device of the utility model is an integrated component for accelerating the efficient treatment of sewage by solar thermal energy. It has the advantages of simple structure, efficient use of solar energy, high photothermal conversion efficiency, strong heat storage capacity, abundant material sources, low price and strong controllability. It uses green and low-carbon solar energy to provide heat for sewage treatment facilities, breaking the barriers of low operating efficiency and high cost of sewage in low temperature seasons, and improving quality and efficiency with green and low-carbon energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the temperature control layer of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the temperature sensor of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the utility model used in series;

[0021] Figure 5 It is a schematic diagram of the structure of the utility model used in parallel. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 3 As shown, the utility model provides a bioreactor heating device, including a frame, the frame is connected to a water inlet pipe 1 and a water outlet pipe 2, the frame frame includes a photothermal conversion layer 7, a middle heat storage layer and an inner aluminum plate 8, the middle heat storage layer includes a temperature control layer 6 and an excess heat storage layer 9 with a composite phase change material placed thereon, the excess heat storage layer 9 is around the temperature control layer 6, and in the gap between the temperature control layer 6 and the photothermal conversion layer 7 and the inner aluminum plate 8; the temperature control layer 6 is a plurality of aluminum tubes 63 arranged in a row with a composite phase change material 62 placed therein, a sealing cover 61 is detachably connected to the aluminum tube 63, and an electric heater 64 is arranged around the aluminum tube 63 to achieve direct heating of water in the bioreactor.

[0024] In some embodiments, the light-to-heat conversion layer 7 is a glass plate coated with a light-to-heat conversion material 3 .

[0025] In some embodiments, a water volume controller 4 is installed on both the water inlet pipe 1 and the water outlet pipe 2 .

[0026] In some embodiments, temperature sensors 5 are installed on both the water inlet pipe 1 and the water outlet pipe 2 .

[0027] In some embodiments, the photothermal conversion material 3 is a biocarbon photothermal conversion material.

[0028] In some embodiments, the composite phase change material 62 is a mixture of butyl stearate and biochar.

[0029] In some embodiments, the temperature sensor 5 is mounted on a base 53 , and the temperature sensor 5 includes a temperature sensor 51 and a display screen 52 .

[0030] The utility model also provides a cold region sewage treatment device, wherein the bioreactor of the sewage treatment device adopts a bioreactor heating device.

[0031] In the present invention, since the temperature control layer 6, the excess heat storage layer 9 and the light-heat conversion material 3 all need a frame for support and protection, the frame plays the role of storing sewage and supporting, wherein the outer large rectangular parallelepiped is composed of a vacuum glass plate with good light transmittance. The inner small rectangular parallelepiped is an aluminum plate layer as a sewage storage device.

[0032] The heating device provided by the utility model is used for sewage heating to maintain the activity of microorganisms. The inner wall of the vacuum glass plate is a layer of biochar material that plays a role in converting light energy into heat energy. The aluminum tube and the excess heat storage layer both contain a composite phase change material of butyl stearate and biochar. Butyl stearate can store heat through phase change, and biochar can improve thermal conductivity. The composite phase change material not only conducts the heat generated by the photothermal material to the sewage, but also has the function of storing excess heat.

[0033] In the utility model, the temperature sensor is used to monitor the sewage temperature in real time, so as to prevent the water temperature from being too high or too low, which is not conducive to the metabolic activities of microorganisms and affects the quality of the effluent water. The building configuration is mainly circular, and a temperature sensor is added to the circular structure, and a temperature display screen is stored on the surface of the circular structure.

[0034] In the utility model, the middle heat storage layer is placed in the gap between the inner layer and the outer layer of the frame, and is composed of two parts: a temperature control layer 6 and an excess heat storage layer 9 in which a composite phase change material is placed. The temperature control layer 6 adopts the method of adding a composite phase change material to an aluminum tube. The use of the aluminum tube greatly improves the thermal conductivity of the entire reactor. When the sewage water temperature is too high, the energy provided to the bioreactor can be regulated by the excess heat storage layer 9. When the solar heat energy is insufficient or the inlet water temperature is too low, such as at night, the electric heater 64 can be started to continue to heat the sewage to maintain the high activity of microorganisms in the water.

[0035] In the present invention, the number of the aluminum tubes 63 is determined according to the length of the frame, and the aluminum tubes 63 are arranged in a row and placed in the middle heat storage layer to form a temperature control layer 6 .

[0036] In the utility model, water of the entire bioreactor enters from the water inlet pipe 1 and is discharged from the water outlet pipe 2. A water volume controller 4 and a temperature sensor 5 are respectively arranged on the water inlet pipe 1 and the water outlet pipe 2 to monitor the water temperature and water volume of the inlet water so as to monitor and control the temperature.

[0037] Under sunlight, the photothermal conversion layer 7 absorbs sunlight and converts light energy into heat, and then transmits the heat to the bioreactor through the middle storage layer, while storing the excess heat by utilizing the phase change of butyl stearate.

[0038] The utility model can simultaneously treat more sewage by parallel or series connection. The series connection mode is that the water inlet pipe 1 of one of two adjacent reactors is connected to the water outlet pipe 2 of the other reactor, such as Figure 4 As shown, if there are multiple reactors, they are connected in sequence in the above manner. The parallel connection method is that the water inlet pipe 1 of two adjacent reactors is connected, and the water outlet pipe 2 is connected, such as Figure 5 shown.

[0039] The real-time change of water temperature requires the temperature control layer 6 to control it in real time. The device consists of two parts. The main component of the first part is an aluminum tube 63 containing a composite phase change material 62. A detachable sealing cover 61 made of PVC material is arranged above the aluminum tube 63. By controlling the amount of composite phase change material 62 added, the purpose of responding to temperature changes in real time is achieved. The stored heat can be released at low temperatures to regulate the water temperature of the bioreactor. The other part is an electric heater 64. When the solar heat energy is insufficient at night, on rainy days, etc., or the inlet water temperature is too low, the electric heater 64 can be started to convert electrical energy into thermal energy to continue to supply heat to the sewage treatment unit to maintain the high activity of microorganisms in the water.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A bioreactor heating device, characterized in that: It comprises a frame, which is connected with a water inlet pipe and a water outlet pipe, the frame frame comprises a light-to-heat conversion layer, a middle heat storage layer and an inner aluminum plate, the middle heat storage layer comprises a temperature control layer and an excess heat storage layer with a composite phase change material placed therein; the temperature control layer is a plurality of aluminum tubes arranged in a row with a composite phase change material placed therein, and a sealing cover is detachably connected to the aluminum tube.

2. The bioreactor heating device according to claim 1, characterized in that: An electric heater is arranged around the aluminum tube.

3. The bioreactor heating device according to claim 1, characterized in that: The light-to-heat conversion layer is a glass plate coated with a light-to-heat conversion material.

4. The bioreactor heating device according to claim 1, characterized in that: Water volume controllers are installed on the water inlet pipeline and the water outlet pipeline.

5. The bioreactor heating device according to claim 1, characterized in that: Temperature sensors are installed on the water inlet pipe and the water outlet pipe.

6. The bioreactor heating device according to claim 3, characterized in that: The light-to-heat conversion material coated on the glass plate is a biocarbon light-to-heat conversion material.

7. The bioreactor heating device according to claim 1, characterized in that: The composite phase change material placed in the excess heat storage layer is a mixture of butyl stearate and biochar.

8. The bioreactor heating device according to claim 1, characterized in that: The temperature sensor is installed on the base, and the temperature sensor includes a temperature sensor and a display screen.

9. A cold region sewage treatment device, characterized in that: The bioreactor of the sewage treatment device uses the bioreactor heating device according to claim 1.

Images