Organic sewage anaerobic reactor

Abstract

The utility model discloses an organic sewage anaerobic reactor belongs to sewage treatment field, including feed pump, fermentation tank, tail gas catalytic combustion furnace, heat energy recovery ware, circulating water jar and circulating water pump, feed pump, fermentation tank, tail gas catalytic combustion furnace and heat energy recovery ware are communicated in proper order, fermentation tank includes baffle, and the inner wall of fermentation tank is linked with baffle to divide fermentation tank into upper chamber and lower chamber, and the upper chamber is equipped with the filler function, and the filler function is set up in the upper surface of baffle and is communicated with lower chamber, feed pump is communicated with lower chamber, and tail gas catalytic combustion furnace is communicated with upper chamber, and the heating coil is equipped in lower chamber, and the import end of heating coil, circulating water jar, circulating water pump and heat energy recovery ware are communicated in proper order, and the export end of heat energy recovery ware is communicated with the import end of heating coil, thereby can improve the efficiency of anaerobic reaction in fermentation tank.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically relating to an anaerobic reactor for organic wastewater. Background Technology

[0002] Organic wastewater refers to wastewater containing a large amount of organic pollutants, primarily derived from biological metabolites or artificially synthesized organic matter. Anaerobic treatment of organic wastewater utilizes the metabolic characteristics of anaerobic microorganisms to reduce the organic matter in the wastewater. Generally, the anaerobic reaction is more efficient at temperatures between 20℃ and 60℃, with higher temperatures resulting in higher anaerobic reaction rates.

[0003] Common wastewater treatment devices currently include fermenters and filters. In operation, organic wastewater is fed into the fermenter for anaerobic fermentation. The resulting liquid and gas are then filtered through the filter, thus achieving anaerobic treatment of the organic wastewater. However, in these wastewater treatment devices, the anaerobic reaction efficiency within the fermenter is low, and the overall automation level of the device is low. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides an anaerobic reactor for organic wastewater. The technical problem to be solved by this utility model is achieved through the following technical solution:

[0005] In the first aspect, this utility model provides an anaerobic reactor for organic wastewater, including a feed pump, a fermenter, a tail gas catalytic combustion furnace, a heat recovery unit, a circulating water tank, and a circulating water pump, wherein the feed pump, fermenter, tail gas catalytic combustion furnace, and heat recovery unit are connected in sequence.

[0006] The fermenter includes a partition plate connected to the inner wall of the fermenter to divide the fermenter into an upper chamber and a lower chamber. A stuffing box is provided in the upper chamber, which is located on the upper surface of the partition plate and communicates with the lower chamber.

[0007] The feed pump is connected to the lower chamber, and the tail gas catalytic combustion furnace is connected to the upper chamber. The lower chamber is equipped with a heating coil. The outlet end of the heating coil, the circulating water tank, the circulating water pump, and the inlet end of the heat recovery unit are connected in sequence. The outlet end of the heat recovery unit is connected to the inlet end of the heating coil.

[0008] In one embodiment of this utility model, the tail gas catalytic combustion furnace includes a furnace body, a heat storage structure is provided inside the furnace body, an electric heating wire is provided at the top of the furnace body, an ash removal door is provided at the bottom of the furnace body, a straight pipe is provided at the upper end of the furnace body, the straight pipe is connected to the fermentation tank, and the bottom of the furnace body is connected to the bottom of the heat recovery unit.

[0009] In one embodiment of this utility model, a liquid seal tank is also included, one end of which is connected to the fermentation tank and the other end is connected to a straight pipe at the top of the furnace body.

[0010] In one embodiment of this utility model, a fan and an exhaust pipe are also included, with one end of the fan connected to a heat recovery unit and the other end connected to the exhaust pipe.

[0011] In one embodiment of the present invention, the heat recovery unit includes an air preheater and a water heat exchanger connected in series in a vertical direction, and a make-up air pipe is provided between the heat recovery unit and the tail gas catalytic combustion furnace.

[0012] The water heat exchanger is connected to the bottom of the furnace body, one end of the air preheater is connected to the fan, the other end is connected to the air supply pipe, and the air supply pipe is connected to the straight pipe.

[0013] One end of the water heat exchanger is connected to the circulating water pump, and the other end is connected to the inlet of the heating coil.

[0014] In one embodiment of this utility model, a hot water external supply pipeline is also included, which is connected to a water heat exchanger.

[0015] In one embodiment of this utility model, the feed pump is also connected to the bottom of the upper chamber.

[0016] In one embodiment of this utility model, the stuffing box is a cylindrical structure that runs vertically through the top and bottom. The upper end of the stuffing box is provided with a pressure grate, and the lower end is provided with a support grate. Pall ring packing is provided between the pressure grate and the support grate.

[0017] In one embodiment of this utility model, a reinforcing angle steel is provided between the partition and the inner wall of the fermentation tank, and a support column is provided between the partition and the bottom of the fermentation tank.

[0018] In one embodiment of this utility model, the fermenter is further provided with a liquid outlet pipe, a ladder, an upper cleaning channel and a lower cleaning channel.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] In the above-mentioned scheme of this application, the anaerobic reactor for organic wastewater includes a feed pump, a fermenter, a tail gas catalytic combustion furnace, a heat recovery unit, a circulating water tank, and a circulating water pump. The feed pump, fermenter, tail gas catalytic combustion furnace, and heat recovery unit are connected in sequence. The fermenter includes a partition plate connected to the inner wall of the fermenter to divide the fermenter into an upper chamber and a lower chamber. A stuffing box is provided in the upper chamber, which is located on the upper surface of the partition plate and communicates with the lower chamber. The feed pump is connected to the lower chamber, and the tail gas catalytic combustion furnace is connected to the upper chamber. A heating coil is provided in the lower chamber. The outlet end of the heating coil, the circulating water tank, the circulating water pump, and the inlet end of the heat recovery unit are connected in sequence. The outlet end of the heat recovery unit is connected to the inlet end of the heating coil. With this structure, the feed pump pumps organic wastewater into the lower chamber of the fermenter for fermentation. The heating coil heats the organic wastewater to improve the anaerobic reaction efficiency. The gas and liquid produced after fermentation in the fermenter are filtered through a stuffing box and enter the upper chamber. The liquid can be output for later use, while the gas flows to the tail gas catalytic combustion furnace for deep purification through catalytic combustion. After catalytic combustion in the tail gas catalytic combustion furnace, the gas enters the heat recovery unit. At this point, the heat recovery unit recovers the heat energy of the gas and transfers the heat to the heating coil, enabling the heating coil to maintain the heating temperature for the organic wastewater. The water in the heating coil can be fed into a circulating water tank, and the water in the circulating water tank is pumped back into the heat recovery unit by a circulating water pump, thereby achieving energy self-circulation and improving the automation level of the overall device.

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the anaerobic reactor for organic wastewater provided in an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the fermentation tank in an embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram of the tail gas catalytic combustion furnace and heat recovery device in an embodiment of this utility model.

[0025] Attached reference numerals: 1-Feed pump, 2-Fermentation tank, 3-Liquid seal tank, 4-Tail gas catalytic combustion furnace, 5-Heat recovery unit, 6-Fan, 7-Exhaust pipe, 8-Circulating water tank, 9-Circulating water pump, 21-Baffle plate, 22-Heating coil, 23-Stuffing box, 24-Liquid outlet pipe, 25-Ladder, 26-Upper cleaning channel, 27-Lower cleaning channel, 41-Heating wire, 42-Heat storage structure, 43-Ash cleaning door, 51-Air preheater, 52-Water heat exchanger, 53-Purge port. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0027] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides an anaerobic reactor for organic wastewater, including a feed pump 1, a fermenter 2, a tail gas catalytic combustion furnace 4, a heat recovery unit 5, a circulating water tank 8, and a circulating water pump 9. The feed pump 1, fermenter 2, tail gas catalytic combustion furnace 4, and heat recovery unit 5 are connected in sequence. The fermenter 2 includes a partition 21 connected to the inner wall of the fermenter 2 to divide the fermenter 2 into an upper chamber and a lower chamber. A stuffing box 23 is provided in the upper chamber, which is located on the upper surface of the partition 21 and communicates with the lower chamber. The feed pump 1 is connected to the lower chamber, and the tail gas catalytic combustion furnace 4 is connected to the upper chamber. A heating coil 22 is provided in the lower chamber. The outlet end of the heating coil 22, the circulating water tank 8, the circulating water pump 9, and the inlet end of the heat recovery unit 5 are connected in sequence. The outlet end of the heat recovery unit 5 is connected to the inlet end of the heating coil 22.

[0028] In some embodiments of this application, the organic wastewater anaerobic reactor can be used for livestock farm flushing wastewater, or the organic wastewater anaerobic reactor can be connected in series with a biodegradable organic wastewater downstream for anaerobic purification.

[0029] In some embodiments of this application, the feed pump 1 is used to pump organic wastewater into the fermentation tank 2. The feed pump 1 can be a common centrifugal pump, screw pump, etc.

[0030] In some embodiments of this application, the fermenter 2 is divided into upper and lower chambers by a partition 21, and the two chambers are connected by a stuffing box 23, thereby ensuring that large particles undergo primary fermentation in the lower chamber, and that gas and liquid are filtered by the stuffing box 23 and then enter the upper chamber for secondary fermentation, sedimentation and clarification.

[0031] In some embodiments of this application, valves, pressure gauges, flow meters, and other devices are also provided between the circulating water pump 9 and the heat recovery unit 5.

[0032] In some embodiments of this application, the effluent from the heating coil 22 first enters the circulating water tank 8 for sedimentation, venting, and deoxygenation, and then is pumped into the heat recovery unit 5 by the circulating water pump 9 to absorb high-grade heat energy. Sedimentation and venting are to reduce scaling and oxygen corrosion, and the circulating water used to transfer heat energy should be distilled soft water or demineralized water.

[0033] In some embodiments of this application, the partition 21 is a circular plate, and the stuffing box 23 is disposed at the center of the circular plate.

[0034] In some embodiments of this application, the instrument valve pump assembly on the pipeline can be equipped with a thermal insulation structure to reduce energy waste.

[0035] It should be noted that during the anaerobic fermentation of organic wastewater in fermenter 2, the anaerobic microorganisms in the wastewater can effectively degrade the organic matter in the wastewater. During this process, a large amount of bacterial sludge is formed. After filtration and sedimentation by the packing gland 23, the effluent remains clear. Due to the high concentration of bacteria in the fermentation system, heating the bacteria through the heating coil 22 can significantly improve the biodegradation efficiency of organic matter. A certain amount of gas is produced during anaerobic fermentation, but this gas is not necessarily high-concentration biogas; its calorific value is low and fluctuates greatly, and it may also contain malodorous and toxic components. Catalytic incineration technology can thoroughly purify these gases, and the recovered waste heat can be used to maintain the fermentation temperature, thereby promoting bacterial reproduction. Furthermore, considering that the material of fermenter 2 has a significant impact on the activity of the microbial community, the selected tank material must be non-toxic and harmless, and must also meet the requirements of corrosion resistance and pressure resistance.

[0036] In the above-mentioned scheme of this application, the anaerobic reactor for organic wastewater includes a feed pump 1, a fermenter 2, a tail gas catalytic combustion furnace 4, a heat recovery unit 5, a circulating water tank 8, and a circulating water pump 9. The feed pump 1, fermenter 2, tail gas catalytic combustion furnace 4, and heat recovery unit 5 are connected in sequence. The fermenter 2 includes a partition 21, which is connected to the inner wall of the fermenter 2 to divide the fermenter 2 into an upper chamber and a lower chamber. A stuffing box 23 is provided in the upper chamber, which is located on the upper surface of the partition 21 and communicates with the lower chamber. The feed pump 1 is connected to the lower chamber, the tail gas catalytic combustion furnace 4 is connected to the upper chamber, and a heating coil 22 is provided in the lower chamber. The outlet end of the heating coil 22, the circulating water tank 8, the circulating water pump 9, and the inlet end of the heat recovery unit 5 are connected in sequence. The outlet end of the heat recovery unit 5 is connected to the inlet end of the heating coil 22. With this structure, the feed pump 1 pumps organic wastewater into the lower chamber of the fermentation tank 2 for fermentation. The heating coil 22 heats the organic wastewater to improve the anaerobic reaction efficiency. The gas and liquid produced after fermentation in the fermentation tank 2 are filtered through the stuffing box 23 and enter the upper chamber. The liquid can be output for later use, and the gas can flow to the tail gas catalytic combustion furnace 4 for deep purification through catalytic combustion. After catalytic combustion in the tail gas catalytic combustion furnace 4, the gas enters the heat recovery unit 5. At this time, the heat recovery unit 5 can recover the heat energy of the gas and transfer the heat to the heating coil 22, so that the heating coil 22 can maintain the heating temperature of the organic wastewater. The water in the heating coil 22 can be input into the circulating water tank 8. The water in the circulating water tank 8 is pumped back into the heat recovery unit 5 by the circulating water pump 9, thereby realizing the self-circulation of energy and improving the automation level of the overall device.

[0037] In some optional examples, the organic wastewater contains suspended solids and sludge. The organic wastewater enters the lower chamber of the fermenter 2 via feed pump 1. To facilitate the transport of high-viscosity materials, feed pump 1 is a stainless steel explosion-proof screw pump. As the organic wastewater is input, the lower chamber of the fermenter 2 gradually fills, and the microbial community and sludge aggregate and settle, fully forming a relatively stable fermentation zone. With continuous feeding, excess upper liquid and air bubbles pass through the stuffing box 23 in the middle of the baffle 21. The microbial community and suspended solids are intercepted, filtered, degraded, and absorbed in the stuffing box 23, with a small amount settling back to the lower chamber. The liquid overflowing from the stuffing box 23 enters the space above the baffle 21 for further fermentation, sedimentation, and clarification. As the upper liquid gradually fills, under pressure, the liquid level is automatically controlled, and the liquid is discharged normally from the outlet pipe 24 for further purification. If it is wastewater from a livestock farm, this discharged liquid is biogas slurry, which can be safely used for fertilization.

[0038] In some embodiments of this application, the tail gas catalytic combustion furnace 4 includes a furnace body, a heat storage structure 42 inside the furnace body, an electric heating wire 41 at the top of the furnace body, a ash removal door 43 at the bottom of the furnace body, a straight pipe at the upper end of the furnace body that connects to the fermentation tank 2, and a connection between the bottom of the furnace body and the bottom of the heat recovery unit 5. With this structure, the gas can undergo catalytic combustion after passing through the tail gas catalytic combustion furnace 4 to achieve deep purification.

[0039] In some embodiments of this application, the heat storage structure 42 can be a refractory brick masonry.

[0040] In some embodiments of this application, the tail gas catalytic combustion furnace 4 is a once-through top-fired furnace. The electric heating wire 41 at the upper end of the furnace is kept red-hot to preheat the furnace chamber. The refractory bricks in the middle reach a red-hot state, and the gas from the fermentation tank 2 and supplementary air are introduced for catalytic combustion. Even if there is liquid mist in the airflow, it will be absorbed, dried, carbonized, and gasified on the brick surface, resulting in complete incineration and purification. The furnace is maintained at 700℃~900℃, providing sufficient calorific value for the gas in the fermentation tank 2, which can reduce or even shut off the electric heating wire 41, saving energy. With prolonged use, the surface of the refractory bricks will become micro-powdered, which can be deposited at the bottom with the airflow. During annual inspection, it can be removed through the ash removal door 43 and safely disposed of mixed with soil or solid waste.

[0041] In some embodiments of this application, the fermentation tank 2 is a vertical storage tank, the partition 21 is located at the middle horizontal position, the partition 21 can be 0.5 meters lower than the middle horizontal position, the heating coil 22 is located at the bottom of the tank, it can be supported and stabilized by a bracket, or it can be fixed by a U-shaped clip, so that it has space to expand freely.

[0042] In some embodiments of this application, the heating coil 22 can heat the organic wastewater at the bottom of the fermenter 2 to 40°C to 60°C. At this temperature, the organic wastewater can rapidly enhance gas production, allowing the anaerobic degrading bacteria to reach a vigorous working state. Simultaneously, the internal heating and external insulation of the heating coil 22 work together to overcome the internal disturbances caused by seasonal and temperature changes, thereby improving the reactor's processing efficiency.

[0043] In some embodiments of this application, the fermenter 2 is made of stainless steel of grade 304 or higher, with a design pressure of 0.4 MPa, a design temperature of 80°C, and an operating pressure of 0.2 MPa from atmospheric pressure to 60°C from ambient temperature. The pressure, temperature, and liquid level sensors comply with explosion-proof and communication protocols, are connected to PLC for automatic control, the safety valve is set at a pressure of 0.3 MPa, and the overpressure vent pipe is no less than 5 meters long, ensuring safe discharge away from the control area. The fermenter 2 is designed based on sampling and testing of the biochemical degradation efficiency of the material, with the volume calculated according to a hydraulic retention time of 7 to 15 days.

[0044] In some embodiments of this application, the stuffing box 23 is a cylindrical structure that runs vertically through the box. The upper end of the stuffing box 23 is provided with a pressure grate, and the lower end is provided with a support grate. Pall ring packing is provided between the pressure grate and the support grate. This structure improves the filtration efficiency of the stuffing box 23.

[0045] In some embodiments of this application, the stuffing box 23 may be located in the middle area of ​​the partition plate 21. The diameter of the stuffing box 23 is 0.25 to 0.5 times the inner diameter of the fermentation tank 2, and the height is 0.5 meters from the top edge of the side wall of the tank. The root of the stuffing box 23 is firmly welded to the partition plate 21 to form a whole.

[0046] In some embodiments of this application, such as Figure 1 and Figure 2 As shown, during feeding, organic wastewater is first fed into the lower chamber. After the lower chamber is filled with liquid, the liquid overflows into the upper chamber through the stuffing box 23. At this time, the liquid below the baffle 21 will exert pressure on the baffle 21.

[0047] In some embodiments of this application, the partition plate 21 has a central opening, the stuffing box 23 is disposed at the center of the partition plate 21, and the diameter of the central opening of the partition plate 21 is 10 cm smaller than the inner diameter of the cylinder of the stuffing box 23.

[0048] In some embodiments of this application, a reinforcing angle steel is provided between the partition 21 and the inner wall of the fermenter 2, and a support column is provided between the partition 21 and the bottom of the fermenter 2. With this structure, since the liquid overflows into the upper chamber through the stuffing box 23, the liquid in the lower part of the partition 21 will exert pressure on the partition 21. Therefore, by providing the reinforcing angle steel and the support column, the stability of the partition 21 can be improved, and the partition 21 can be prevented from deforming and breaking.

[0049] In some embodiments of this application, such as Figure 2As shown, the fermenter 2 is also equipped with a liquid outlet pipe 24, a ladder 25, an upper cleaning channel 26, and a lower cleaning channel 27. With this structure, the liquid in the upper chamber can flow out through the storage pipe. Workers can clean the upper chamber through the upper cleaning channel 26 and the ladder 25, and can clean the lower chamber through the lower cleaning channel 27.

[0050] In some embodiments of this application, such as Figure 2 As shown, the liquid outlet pipe 24 and the ladder 25 are respectively installed on the inner walls of both sides of the fermenter 2. The top of the fermenter 2 is a conical structure, and the gas outlet pipe is provided at the top corner of the conical structure. The upper cleaning channel 26 is located on the conical structure, and the lower cleaning channel 27 is located on the side wall of the lower chamber.

[0051] In some embodiments of this application, the organic wastewater anaerobic reactor further includes a liquid-sealed tank 3, one end of which is connected to the fermentation tank 2, and the other end is connected to a straight pipe at the upper end of the furnace body. This structure improves the safety of the organic wastewater anaerobic reactor.

[0052] In some embodiments of this application, the gas at the top of the fermenter 2 enters the liquid seal tank 3 under pressure and flow control. The liquid seal tank 3 is protected against explosion and backfire by water, and then enters the tail gas catalytic combustion furnace 4 for deep purification.

[0053] In some embodiments of this application, the organic wastewater anaerobic reactor further includes a blower 6 and an exhaust pipe 7. One end of the blower 6 is connected to the heat recovery unit 5, and the other end is connected to the exhaust pipe 7. With this structure, the heat recovery unit 5 can be safely discharged through the blower 6 and the exhaust pipe 7.

[0054] In some embodiments of this application, such as Figure 1 and Figure 3 As shown, the heat recovery unit 5 includes an air preheater 51 and a water heat exchanger 52 connected in series vertically. A make-up air pipe is also provided between the heat recovery unit 5 and the tail gas catalytic combustion furnace 4. The water heat exchanger 52 is connected to the bottom of the furnace body. One end of the air preheater 51 is connected to the fan 6, and the other end is connected to the make-up air pipe, which is connected to a straight pipe. One end of the water heat exchanger 52 is connected to the circulating water pump 9, and the other end is connected to the inlet end of the heating coil 22. With this structure, heat exchange can be achieved as the gas passes through the water heat exchanger 52 and the air preheater 51 in sequence, enabling the heat recovery unit 5 to recover the heat energy from the gas.

[0055] In some embodiments of this application, the air preheater 51 includes an upper tube and a finned heater located within the upper tube, and the water heat exchanger 52 includes a lower tube and a spiral pipe located around the periphery of the lower tube. One side opening of the upper tube is connected to the fan 6, the lower end opening of the upper tube is connected to the lower tube, and the other side opening of the upper tube is connected to the make-up air pipe. Thus, firstly, the gas in the tail gas catalytic combustion furnace 4 can be transported from bottom to top through the lower and upper tubes to the fan 6, achieving safe exhaust. Secondly, when it is necessary to make up air in the tail gas catalytic combustion furnace 4 to ensure complete oxygen-enriched combustion, external gas can enter the tail gas catalytic combustion furnace 4 sequentially through the exhaust pipe 7, the fan 6, the air preheater 51, and the make-up air pipe, and the added air can be fully preheated in the air preheater 51. Furthermore, one end of the spiral pipe is connected to the heating coil 22, and the other end is connected to the circulating water pump 9, allowing the water flow after heat exchange to circulate.

[0056] In some embodiments of this application, the air preheater 51 and the water heat exchanger 52 are both finned tube structures with a purge port 53 at the bottom. They are made of 310S stainless steel and are covered with an anti-scalding and heat-insulating layer.

[0057] In some embodiments of this application, the feed pump 1 is also connected to the bottom of the upper chamber. With this structure, the liquid in the upper chamber can flow into the feed pump 1 and be pumped back into the lower chamber by the feed pump 1, thereby achieving secondary fermentation, sedimentation and clarification of organic wastewater and improving the purification effect of organic wastewater.

[0058] In some embodiments of this application, the organic wastewater anaerobic reactor also includes a hot water supply pipeline connected to the water heat exchanger 52. This structure allows for the external supply of a branch of surplus hot water, enabling full utilization of the surplus hot water.

[0059] In some embodiments of this application, when the reactor is shut down or under maintenance, the combustion furnace can be shut down first, followed by the heat recovery cycle. Then, the fermenter 2 is emptied from top to bottom, rinsed with clean water, and dried with nitrogen. If a manhole is required, it is opened naturally for air replacement, followed by water washing. After oxygen and toxic gas testing, entry is permitted only if safety management regulations are met. A small amount of hardened material may accumulate at the bottom of the fermenter 2 during annual inspections; this is removed by impacting and crushing it with a high-pressure water gun.

[0060] In some embodiments of this application, the anaerobic reactor for organic wastewater utilizes layered fermentation filtration, sedimentation sludge recirculation, and waste gas heat recovery for self-heating to create a stable and superior environment for microorganisms unaffected by changes in the natural environment. This self-controlled balance reduces the impact of changes in material composition, achieving near-ideal anaerobic degradation. The generated gas is thoroughly purified by catalytic incineration, resulting in a colorless and odorless product. The technology and economy are relatively reasonable, and operation and management are simple and reliable.

[0061] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An anaerobic reactor for organic wastewater, characterized in that, It includes a feed pump, a fermenter, a tail gas catalytic combustion furnace, a heat recovery unit, a circulating water tank, and a circulating water pump, wherein the feed pump, fermenter, tail gas catalytic combustion furnace, and heat recovery unit are connected in sequence; The fermenter includes a partition connected to the inner wall of the fermenter to divide the fermenter into an upper chamber and a lower chamber. The upper chamber is provided with a stuffing box, which is disposed on the upper surface of the partition and communicates with the lower chamber. The feed pump is connected to the lower chamber, the tail gas catalytic combustion furnace is connected to the upper chamber, the lower chamber is provided with a heating coil, the outlet end of the heating coil, the circulating water tank, the circulating water pump and the inlet end of the heat recovery unit are connected in sequence, and the outlet end of the heat recovery unit is connected to the inlet end of the heating coil.

2. The anaerobic reactor for organic wastewater according to claim 1, characterized in that, The tail gas catalytic combustion furnace includes a furnace body, a heat storage structure inside the furnace body, an electric heating wire at the top of the furnace body, an ash removal door at the bottom of the furnace body, a straight pipe at the upper end of the furnace body, the straight pipe being connected to the fermentation tank, and the bottom of the furnace body being connected to the bottom of the heat recovery unit.

3. The anaerobic reactor for organic wastewater according to claim 2, characterized in that, It also includes a liquid seal tank, one end of which is connected to the fermentation tank and the other end of which is connected to a straight pipe at the top of the furnace body.

4. The anaerobic reactor for organic wastewater according to claim 2, characterized in that, It also includes a fan and an exhaust pipe, with one end of the fan connected to the heat recovery unit and the other end connected to the exhaust pipe.

5. The anaerobic reactor for organic wastewater according to claim 4, characterized in that, The heat recovery unit includes an air preheater and a water heat exchanger connected in series in a vertical direction, and a make-up air pipe is also provided between the heat recovery unit and the tail gas catalytic combustion furnace. The water heat exchanger is connected to the bottom of the furnace body, one end of the air preheater is connected to the fan, and the other end is connected to the air supply pipe, which is connected to the straight pipe. One end of the water heat exchanger is connected to the circulating water pump, and the other end is connected to the inlet end of the heating coil.

6. The anaerobic reactor for organic wastewater according to claim 5, characterized in that, It also includes a hot water external supply pipeline, which is connected to the water heat exchanger.

7. The anaerobic reactor for organic wastewater according to claim 1, characterized in that, The feed pump is also connected to the bottom of the upper chamber.

8. The anaerobic reactor for organic wastewater according to claim 1, characterized in that, The stuffing box is a cylindrical structure that runs vertically through the top and bottom. The upper end of the stuffing box is provided with a pressure grate, and the lower end is provided with a support grate. Pall ring packing is provided between the pressure grate and the support grate.

9. The anaerobic reactor for organic wastewater according to claim 8, characterized in that, A reinforcing angle steel is provided between the partition and the inner wall of the fermentation tank, and a support column is provided between the partition and the bottom of the fermentation tank.

10. The anaerobic reactor for organic wastewater according to claim 8, characterized in that, The fermenter is also equipped with a liquid outlet pipe, a ladder, an upper cleaning channel, and a lower cleaning channel.

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