Sewage treatment device and method based on up-flow anaerobic rotating packed bed reactor

Abstract

The invention discloses a sewage treatment device based on an up-flow anaerobic rotating packed bed reactor, and belongs to the technical field of biological sewage treatment. The device comprises a water inlet and outlet module, a reactor main body, a rotary filler module, an automatic control module and a gas collection module, a specific space structure design and a filler rotation operation mode are adopted, so that higher long-generation cycle microbial activity is ensured, the biofilm formation starting time is shortened, and the sewage treatment efficiency stability and the adaptability to water quantity and water quality impact are enhanced; through a unique anaerobic operation environment, facultative microorganisms can quickly convert organic matters into intermediate products of low-molecular fatty acid (acetic acid), so that favorable conditions are created for quick methanation, and the methane yield is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of biological sewage treatment, in particular to a device and method for treating high-concentration organic sewage based on an upflow anaerobic rotating packed bed reactor. Background Art

[0002] With the acceleration of urbanization, the discharge of high-concentration organic sewage continues to increase. Anaerobic biological treatment is an economical and efficient treatment method commonly used for high-concentration organic sewage. Through the action of anaerobic microorganisms, not only can the COD in sewage be degraded, but it is also possible to effectively realize biogas recovery. The current mainstream anaerobic biological treatment processes include anaerobic activated sludge method, anaerobic biological filter, upflow anaerobic sludge blanket (UASB), anaerobic sequencing batch reactor (ASBR), anaerobic baffle reactor (ABR), anaerobic biological rotary disc, moving bed anaerobic bioreactor, etc. However, these traditional anaerobic treatment processes have the following shortcomings and deficiencies:

[0003] (1) Anaerobic activated sludge process, anaerobic folded plate reactor (ABR): The sludge settling properties are very high, and sludge floating and sludge loss are prone to occur, resulting in poor treatment efficiency; the microbial biomass is small and the gas production efficiency is low;

[0004] (2) Anaerobic biofilter: The filler is easily clogged, causing water short-circuiting and high maintenance costs.

[0005] (3) Anaerobic bioreactor: poor biological attachment, low microbial biomass, and poor adaptability to sewage load fluctuations. Moving bed anaerobic bioreactor: collisions between fillers lead to unnatural biofilm shedding, long biofilm growth time, and unstable treatment efficiency.

[0006] (4) Anaerobic sequencing batch reactor (ASBR) and upflow anaerobic sludge blanket (UASB): They can form granular sludge and have good gas production effects, but they are difficult to design and operate. In addition, the presence of filamentous bacteria may cause the granular sludge to loosen and disintegrate, resulting in poor treatment effect.

[0007] In response to the above problems, the present invention proposes a sewage treatment device and method based on an upflow anaerobic rotating packed bed reactor. Summary of the Invention

[0008] 1. Technical Problems to be Solved by the Present Invention

[0009] The object of the present invention is to provide a sewage treatment device and method based on an upflow anaerobic rotating packed bed reactor to increase biomass, avoid sludge floating and loss, and solve the problems of fixed packing clogging and mobile packing collision. The present invention adopts a unique spatial structure design and a packing rotating operation mode to ensure high long-generation cycle microbial activity, shorten the biofilm start-up time, enhance the sewage treatment efficiency stability and adaptability to water quantity and quality shocks; through its unique anaerobic operating environment, facultative microorganisms can quickly convert organic matter into intermediate products of low-molecular fatty acids (acetic acid), thereby creating favorable conditions for rapid methanogenesis and enhancing methane yield.

[0010] 2. Technical solution

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] A sewage treatment device based on an upflow anaerobic rotating packed bed reactor includes an inlet and outlet water module, a reactor body, a rotating packing module, an automatic control module, and a gas collection module;

[0013] The water inlet and outlet module includes an inlet pool, an inlet pump and an outlet pool. The inlet pool is connected to the reactor body through the inlet pump and a connecting pipe; the outlet pool is directly connected to the reactor body through the connecting pipe.

[0014] The reactor body is provided with a water inlet and a mud outlet at the bottom, and the water inlet is connected to the water inlet pump through a connecting pipe; a water outlet is provided on the upper side of the reactor body, and the water outlet is connected to the water outlet pool through a connecting pipe; a plurality of water outlet sampling ports and filler sampling ports are provided on the side wall of the reactor body at regular intervals along the height direction;

[0015] The rotating filler module includes a biological filler, a reduction motor, and a central rotating shaft. The reduction motor is fixedly mounted on the top of the reactor body. The central rotating shaft passes through the interior of the reactor body and its top is fixedly connected to the output shaft of the reduction motor. Four groups of biological fillers are also connected to the central rotating shaft and are arranged inside the four groups of biological fillers.

[0016] The automatic control module includes a computer, a PLC control unit, a temperature controller, a gas flow meter, and a pH / ORP meter; the temperature controller, the gas flow meter, and the pH / ORP meter are interconnected with the PLC control unit, and the PLC control unit is also connected to the computer;

[0017] The gas collection module comprises a gas collection port, which is arranged at the top of the reactor body, and the gas flow meter is installed at the gas collection port.

[0018] Preferably, the reactor body is designed to be cylindrical with a height-to-diameter ratio of (5-15):1; the interior of the reactor body includes a sewage area, a supporting area, and a filler area, the sewage area is arranged at the lower end of the reactor body, the filler area is arranged above the sewage area, and the biological filler is filled inside the filler area, and the volume ratio of the sewage area to the filler area is (1-2):1.

[0019] Preferably, the biological filler is a light inert biological filler, including any one or more of ball rings, polypropylene multifaceted hollow balls or square polyurethane sponges; the carrier filling rate of the biological filler is 30% to 60%, and the spacing between the fillers is 0.5 to 1 times the filler's own size.

[0020] Preferably, the four groups of biological fillers include an upper filler module, a lower filler module and an intermediate bearing sieve plate; the intermediate bearing sieve plate is arranged between the upper filler module and the lower filler module, and is fixed inside the reactor body, with a bearing fixedly installed at the center, and the central rotating shaft is rotatably connected to the central bearing sieve plate through the bearing; the upper filler module and the lower filler module each include a plurality of filler fixings, and the filler fixings are fixedly connected to the central rotating shaft at intervals; the filler fixings include an upper end fixing and a lower end fixing, and the upper end fixing and the lower end fixing are spirally fixed to each other, and simultaneously realize the fixation of the filler, the fixing and the central rotating shaft, and the biological filler is arranged inside the filler fixing.

[0021] Preferably, the temperature controller is installed outside the reactor body to control the temperature of the reactor body; the pH / ORP meter is installed at the water outlet to detect the pH signal and the redox potential signal.

[0022] Further protection is provided for a sewage treatment method based on an upflow anaerobic rotating packed bed reactor, comprising the following steps:

[0023] S1. Select mixed sludge from the thickening tank sludge and anaerobic tank sludge of the municipal sewage treatment plant as the inoculated sludge of the sewage treatment device;

[0024] S2. The temperature of the reactor body is controlled at 30-35°C by a thermostat. The wastewater to be treated is pumped from the inlet tank into the wastewater area at the bottom of the reactor body through an inlet pump. The water flows from bottom to top and contacts the biological filler in the filler area inside the reactor body.

[0025] S3: Microorganisms attach and grow on the biofiller. The reduction motor drives the central shaft and the biofiller support to rotate, which in turn drives the biofiller to rotate and stir. The organic matter in the sewage and the microorganisms on the biofiller fully contact and react, and are degraded by anaerobic microorganisms to produce methane.

[0026] S4. The generated methane gas is collected through a gas collecting port provided at the top of the reactor body, and the amount of gas generated is monitored in real time using a gas flow meter;

[0027] S5. Monitor the pH and ORP of the treated sewage by a pH / ORP meter installed at the outlet;

[0028] S6. Use computers to collect statistics and analyze the gas generation, pH and OPR data, and then regulate and optimize the overall sewage purification process.

[0029] Preferably, the pH of the sewage to be treated pumped into S2 is 7.2-7.5, the alkalinity is 300-500 mg CaCO3 / L, and the influent COD is 1000-8000 mg / L.

[0030] Preferably, the speed of the reduction motor in S3 is 10-50 r / min.

[0031] 3. Beneficial effects

[0032] (1) High efficiency of sewage treatment: The device of the present invention can significantly improve the COD removal rate to more than 95%, and the COD removal load can reach 5-10 kgCOD / m 3 ·d, and effectively recover methane. The average methane production of the system is 300-600mL / (gVS·d), which solves the problems of low COD removal efficiency and low methane production in traditional anaerobic processes.

[0033] (2) Simple design and flexible operation: The reactor automatically adjusts the rotation speed to optimize the hydraulic conditions and mixing effect, ensuring more complete contact between sewage and anaerobic microorganisms, enhancing mass transfer efficiency, achieving good adaptability to different water qualities and loads, and stable operation.

[0034] (3) Easy maintenance and management: The formation of biofilm avoids the expansion and loss of sludge, and the filler will not be blocked or collide with each other. The biofilm grows quickly and stably, undergoing a natural formation, growth, aging and shedding process. Unnatural shedding will not occur, and the sludge output is small.

[0035] (4) Energy saving and automation: No need for reflux, stirring and other power consumption, only a reduction motor is needed, which has high energy efficiency. At the same time, it is easy to install an automatic control system to achieve automatic operation.

[0036] (5) It has high adaptability and stability, strong resistance to shock loads, and can remove difficult-to-biodegrade organic matter and toxic substances, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is an overall structural diagram of a sewage treatment device based on an upflow anaerobic rotating packed bed reactor proposed in the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of the components of the four groups of biological fillers mentioned in Example 1 of the present invention;

[0039] Figure 3 This is a schematic structural diagram of the packing fixing member mentioned in Example 1 of the present invention;

[0040] Figure 4 This is a schematic structural diagram of the rotating shaft connector mentioned in Example 1 of the present invention;

[0041] Figure 5 This is a schematic structural diagram of the center bearing screen plate mentioned in Example 1 of the present invention.

[0042] Description of the numbers in the figure:

[0043] 1. Water inlet tank; 2. Water inlet pump; 3. Water inlet; 4. Biological filler; 5. Central shaft; 6. Water outlet; 7. Mud discharge port; 8. Water outlet sampling port; 9. Filler sampling port; 10. Gas collection port; 11. Reducer motor; 12. PLC control unit; 13. Temperature controller; 14. Reactor body; 15. Gas flow meter; 16. pH / ORP meter; 17. Water outlet tank. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] Example 1:

[0046] See also Figure 1-4 The present invention provides a sewage treatment device based on an upflow anaerobic rotating packed bed reactor, comprising an inlet and outlet water module, a reactor body (14), a rotating packing module, an automatic control module and a gas collection module;

[0047] The water inlet and outlet module includes an inlet pool 1, an inlet pump 2 and an outlet pool 17. The inlet pool 1 is connected to the reactor body through the inlet pump 2 and a connecting pipe; the outlet pool 17 is directly connected to the reactor body 14 through a connecting pipe.

[0048] The reactor body 14 is the foundation of the entire sewage treatment device, and its main function is to carry biological fillers and provide space for biochemical reactions in sewage treatment. A water inlet 3 and a mud outlet 7 are provided at its bottom, and the water inlet 3 is connected to the water inlet pump 2 through a connecting pipe. A water outlet 6 is provided on the upper side of the reactor body 14, and the water outlet 6 is connected to the outlet tank 17 through a connecting pipe. During the treatment process, sewage enters from the water inlet 3 provided at the lower side of the reactor body 14, is stirred and quickly homogenized by the biological fillers, and the microorganisms on the fillers treat the sewage, and the treated water flows out from the water outlet 6 provided on the upper side of the reactor body 14. A number of water sampling ports 8 and filler sampling ports are provided at regular intervals along the height direction on the side wall of the reactor body 14. The sample port 9; the reactor body 14 is designed to be cylindrical with a height-to-diameter ratio of (5-15):1; the interior of the reactor body 14 includes a sewage area, a supporting area, and a filler area, the sewage area is arranged at the lower end of the reactor body 14, the filler area is arranged above the sewage area, and the biological filler 4 is filled in the filler area, and the volume ratio of the sewage area to the filler area is (1-2):1; the biological filler 4 is a light inert biological filler, including any one or more of a Pall ring with a diameter of 20-25 mm, a polypropylene multifaceted hollow sphere, or a square polyurethane sponge, the internal pore diameter of the material is 2-7 mm, and the materials are interconnected; the carrier filling rate of the biological filler 4 is 50%-60%, and the fillers are kept at a spacing of 0.5 to 1 times the filler size;

[0049] The rotating filler module includes a biological filler 4, a reduction motor 11 and a central shaft 5. The reduction motor 11 is fixedly installed at the top of the reactor body 14. The central shaft 5 passes through the interior of the reactor body 14 and its top is fixedly connected to the output shaft of the reduction motor 11. A shaft connector (such as Figure 4 4 groups of biological fillers are also connected to the central shaft 5, and the biological fillers 4 are arranged inside the biological fillers 4 groups; please refer to Figure 2 , the biological filler 4 groups include the upper filler module, the lower filler module and the middle bearing screen plate (such as Figure 5 As shown); the intermediate bearing sieve plate is arranged between the upper packing module and the lower packing module, which is fixed inside the reactor body 14, and a bearing is fixedly installed at the center, and the central shaft 5 is rotatably connected to the central bearing sieve plate through the bearing; the upper packing module and the lower packing module each include a plurality of packing fixing members, which are fixedly connected to the central shaft 5 at intervals; as shown Figure 3 As shown, the filler fixing member includes an upper end fixing member (nut rod tube) and a lower end fixing member (three-lobed threaded rod tube), the upper end fixing member (nut rod tube) and the lower end fixing member (three-lobed threaded rod tube) are screw-fixed with each other, and the biological filler 4 is arranged inside the filler fixing member;

[0050] The automatic control module includes a computer, a PLC control unit 12, a temperature controller 13, a gas flow meter 15 and a pH / ORP meter 16; the temperature controller 13, the gas flow meter 15 and the pH / ORP meter 16 are interconnected and communicated with the PLC control unit 12, and the PLC control unit 12 is also linked to the computer; the temperature controller 13 is installed outside the reactor body 14 and is used to control the temperature of the reactor body 14; the pH / ORP meter 16 is installed at the water outlet 6 and is used to detect the pH signal and the redox potential signal.

[0051] The gas collection module includes a gas collection port 10 , which is disposed at the top of the reactor body 14 , and a gas flow meter 15 is installed at the gas collection port 10 .

[0052] Example 2:

[0053] Based on Example 1, but different in that, the present invention further proposes a sewage treatment method based on an upflow anaerobic rotating packed bed reactor based on the above sewage treatment device, including the following contents:

[0054] Step 1:

[0055] Establish a reaction system, which mainly includes: water inlet pool 1, water inlet pump 2, water inlet 3, biological filler 4, central shaft 5, water outlet 6, mud outlet 7, water outlet sampling port 8, filler sampling port 9, gas collection port 10, reduction motor 11, PLC control unit 12, temperature controller 13, reactor body 14, gas flow meter 15, pH / ORP meter 16, water outlet pool 17;

[0056] The reactor body 14 includes: a sewage area, a supporting area, a filler area, a central rotating shaft 5, a reduction motor 11 and a gas collecting device; wherein the volume ratio of the sewage area to the filler area is about 1:1 to 2:1;

[0057] Wastewater enters through the water inlet 3 located at the lower side of the reactor body 14. It is agitated and rapidly homogenized by the biological filler 4. Microorganisms on the filler process the wastewater, and the treated water flows out through the water outlet 6 located at the upper side of the reactor body 14. Gases generated during the biological treatment process are collected through a gas collection port 10 (equipped with a gas flowmeter 15) located at the top of the reactor body 14, allowing for separation of the treated gases. The reactor body 14 has a mud discharge port 7 at its bottom and a temperature controller 13 on its exterior. Water sampling ports 8 and filler sampling ports 9 are located at regular intervals along its height.

[0058] The rotating biological filler 4 is a light inert polymer biological filler (such as: ball ring, polypropylene multi-faceted hollow ball, square polyurethane sponge, etc.), the carrier filling rate is 30% to 60%; the fillers are kept at a distance of 1 / 2 to 1 times the size of the fillers themselves;

[0059] Step 2:

[0060] For microbial cultivation, the sludge bed directly uses a mixture of sludge from the thickening tank of the municipal sewage treatment plant and sludge from the aerobic aeration tank as the inoculated sludge, with a mixing mass ratio of 2:1. The inoculation volume accounts for 40% of the main reaction zone, and the mixed sludge is poured into the reactor body 14 from the top down. The sludge biofilm method is used for inoculation on the biological filler 4 through sequencing batch operation; simulated wastewater is used in the inoculation stage, the biological filler 4 does not rotate, the C:N:P ratio of the influent is 200:5:1, anhydrous glucose is selected as the carbon source, ammonium chloride, ammonium sulfate or urea is selected as the nitrogen source, potassium dihydrogen phosphate or potassium hydrogen phosphate is selected as the phosphorus source, and 1 mL of trace element stock solution is also added to the influent. After 15 days of intermittent operation (the biological filler 4 rotates at 0 r / min, 0.5h of intermittent water inlet + 1.5h of micro-aerobic exposure + 4h Rotating operation + 0.5h intermittent water discharge = 6h / cycle, 4 operation cycles in 1 day) and 30 days of continuous operation (6d a stage, gradually increasing the organic wastewater concentration and filler rotation speed in 5 stages, the COD concentration of organic wastewater in each stage is 500, 800, 1500, 2000, 3000 mg / L, the rotation speed of biological filler 4 in each stage is controlled at 20-60r / min, the MLSS of the reactor after cultivation is 12~15g / L, and the cultivation time is 45 days.

[0061] Step 3:

[0062] During continuous operation, high-concentration organic wastewater (COD 2000 mg / L) flows into the inlet pool 1, and the wastewater in the inlet pool 1 enters the upflow anaerobic rotating packed bed reactor body 14. The pH value of the inlet water is controlled at 7.0-7.3, and the alkalinity is 500-1000 mg / L (calculated as calcium carbonate).

[0063] Step 4:

[0064] The aerated sewage in the inlet tank is pumped into the bottom of the reaction zone of the reactor body 14 by the inlet pump, flows through the sewage area, the support area, and the filler area in sequence, and finally overflows and is discharged through the outlet 6; the rotation speed of the biological filler 4 in the reactor body 14 is controlled at 20-60r / min, the oxidation-reduction potential (ORP) is controlled at -300 to -350mv, and the system water temperature is maintained at 35±2°C by a heating temperature controller; a temperature, pH, and ORP multi-parameter online monitor is set inside the reactor body 14 for real-time parameter monitoring.

[0065] Step 5:

[0066] The hydraulic retention time (HRT) was gradually shortened and set at 3 days, 2.5 days and 2 days respectively. Each HRT was operated for 15 days (after 45 days, the average methane production of the system was 800-1000 mL / d). The rotation speed of the bio-packing 4 was controlled at 45-65 r / min.

[0067] In summary, the above-mentioned upflow anaerobic rotating packed bed reactor was used to treat starch wastewater with an influent COD of 3000-5000 mg / L. After 30 days of operation, a dark gray dense biofilm grew on the biofiller 4 of the reactor, and the sludge concentration MLSS reached 16-20 g / L. At this time, the COD removal rate was 95%-97%, and the organic load was 2.5-3.0 kgCOD / m 3 ·d, with an average methane production of 1000-1200 mL / d.

[0068] Example 3:

[0069] The wastewater treatment device proposed in Example 1 was used to treat slaughterhouse wastewater with an influent COD of 800-1200 mg / L. After 35 days of operation, a dark gray dense biofilm grew on the biofiller 4 of the reactor, and the sludge concentration MLSS reached 10-12 g / L. At this time, the COD removal rate was 92%-95%, and the organic load was 1.0-1.5 kgCOD / m 3 ·d, with an average methane production of 500-600 mL / d.

[0070] Example 4:

[0071] The wastewater treatment device proposed in Example 1 was used to treat coking wastewater with an influent COD of 1800-2000 mg / L. After 60 days of operation, a dark gray dense biofilm grew on the biofiller 4 of the reactor, and the sludge concentration MLSS reached 12-15 g / L. At this time, the COD removal rate was 90%-95%, and the organic load was 1.5-2.0 kgCOD / m 3 ·d, with an average methane production of 400-600 mL / d.

[0072] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, and these changes should be covered by the scope of protection of the present invention.

Claims

1. A sewage treatment device based on an upflow anaerobic rotating packed bed reactor, characterized in that: It includes a water inlet and outlet module, a reactor body (14), a rotating filler module, an automatic control module and a gas collection module; The water inlet and outlet module comprises an inlet pool (1), an inlet pump (2) and an outlet pool (17); the inlet pool (1) is connected to the reactor body via the inlet pump (2) and a connecting pipe; the outlet pool (17) is directly connected to the reactor body (14) via a connecting pipe; The reactor body (14) is provided with a water inlet (3) and a mud outlet (7) at the bottom, and the water inlet (3) is connected to the water inlet pump (2) through a connecting pipe; a water outlet (6) is provided on the upper side of the reactor body (14), and the water outlet (6) is connected to the water outlet pool (17) through a connecting pipe; a plurality of water outlet sampling ports (8) and filler sampling ports (9) are provided on the side wall of the reactor body (14) at regular intervals along the height direction; The rotating filler module comprises a biological filler (4), a reduction motor (11) and a central rotating shaft (5). The reduction motor (11) is fixedly mounted on the top of the reactor body (14). The central rotating shaft (5) passes through the interior of the reactor body (14), and the top of the central rotating shaft is fixedly connected to the output shaft of the reduction motor (11). Four groups of biological fillers are also connected to the central rotating shaft (5), and the biological fillers (4) are arranged inside the four groups of biological fillers. The automatic control module comprises a computer, a PLC control unit (12), a temperature controller (13), a gas flow meter (15) and a pH / ORP meter (16); the temperature controller (13), the gas flow meter (15) and the pH / ORP meter (16) are interconnected and communicated with the PLC control unit (12), and the PLC control unit (12) is also linked to the computer; The gas collection module comprises a gas collection port (10), the gas collection port (10) is arranged at the top of the reactor body (14), and the gas flow meter (15) is installed at the gas collection port (10).

2. The sewage treatment device based on the upflow anaerobic rotating packed bed reactor according to claim 1, characterized in that: The reactor body (14) is designed to be cylindrical with a height-to-diameter ratio of (5-15):1; the interior of the reactor body (14) includes a sewage area, a supporting area, and a filler area, wherein the sewage area is arranged at the lower end of the reactor body (14), the filler area is arranged above the sewage area, and the biological filler (4) is filled in the filler area, and the volume ratio of the sewage area to the filler area is (1-2):

1.

3. The sewage treatment device based on the upflow anaerobic rotating packed bed reactor according to claim 1, characterized in that: The biological filler (4) is a light inert biological filler, including any one or more of ball rings, polypropylene multifaceted hollow balls or square polyurethane sponges; the carrier filling rate of the biological filler (4) is 30% to 60%, and the spacing between the fillers is 0.5 to 1 times the size of the filler itself.

4. The sewage treatment device based on the upflow anaerobic rotating packed bed reactor according to claim 1, characterized in that: The four groups of biological fillers include an upper filler module, a lower filler module, and an intermediate bearing sieve plate; the intermediate bearing sieve plate is arranged between the upper filler module and the lower filler module, and is fixed inside the reactor body (14), with a bearing fixedly installed at the center, and the central rotating shaft (5) is rotatably connected to the central bearing sieve plate through the bearing; the upper filler module and the lower filler module each include a plurality of filler fixing members, and the filler fixing members are fixedly connected to the central rotating shaft (5) in an interval manner; the filler fixing members include an upper end fixing member and a lower end fixing member, and the upper end fixing member and the lower end fixing member are screw-fixed with each other, and simultaneously realize the fixation of the filler, the fixing member and the central rotating shaft, and the biological filler (4) is arranged inside the filler fixing member.

5. The sewage treatment device based on the upflow anaerobic rotating packed bed reactor according to claim 1, characterized in that: The temperature controller (13) is installed outside the reactor body (14) and is used to control the temperature of the reactor body (14); the pH / ORP meter (16) is installed at the water outlet (6) and is used to detect the pH signal and the redox potential signal.

6. A sewage treatment method implemented by the device according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Select mixed sludge from the thickening tank sludge and anaerobic tank sludge of the municipal sewage treatment plant as the inoculated sludge of the sewage treatment device; S2, controlling the temperature of the reactor body (14) at 30-35°C by means of a temperature controller (13), pumping the sewage to be treated from the water inlet tank (1) into the sewage area at the bottom of the reactor body (14) through the water inlet pump (2), with the water flowing from bottom to top and contacting the biological filler (4) in the filler area inside the reactor body (14); S3, microorganisms attach and grow on the biological filler (4), and the central rotating shaft (5) and the biological filler support are driven to rotate by the reduction motor (11), thereby driving the biological filler (4) to rotate and stir, so that the organic matter in the sewage and the microorganisms on the biological filler (4) fully contact and react, and are degraded by anaerobic microorganisms and produce methane; S4. The generated methane gas is collected through a gas collecting port provided at the top of the reactor body (14), and the amount of gas generated is monitored in real time using a gas flow meter (15); S5, monitoring the pH and oxidation-reduction potential (OPR) of the treated sewage by a pH / ORP meter (16) installed at the outlet (6); S6. Use computers to collect statistics and analyze the gas generation, pH and OPR data, and then regulate and optimize the overall sewage purification process.

7. The sewage treatment device based on the upflow anaerobic rotating packed bed reactor according to claim 6, characterized in that: The pH of the sewage to be treated pumped into S2 is 7.2-7.5, the alkalinity is 300-500 mg CaCO3 / L, and the influent COD is 1000-8000 mg / L.

8. The sewage treatment device based on the upflow anaerobic rotating packed bed reactor according to claim 6, characterized in that: The speed of the reduction motor (11) in S3 is 10-50 r / min.

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