A septic tank device for monitoring harmful gases based on the internet of things

Abstract

The present application discloses a kind of based on internet of things monitoring harmful gas's septic tank equipment, for the anaerobic fermentation step of fecal water ratio 3:1~5.6:1, comprising: filter pond, by sedimentation, filter upper floating impurities and lower hard impurities, and after filtering, the dilute manure water and thick manure water that reintegration is mixed;Fermentation tank, the fecal water ratio 3:1~5.6:1 fecal water is passed into fermentation tank and adds fermentation bacteria and carries out fermentation;Suction agitator, for stirring and pumping fecal water, suction agitator is mixed dilute manure water and thick manure water in fixed phase operation.The specific anaerobic fermentation equipment, in fermentation tank fixed phase and temperature change phase, suction agitator is operated in view of, to stir dilute manure water and thick manure water in fermentation tank, so that the temperature in fermentation tank is more uniform, and make microorganism diffusion, simultaneously, by stirring, the temperature in fermentation tank is adjusted, so as to maintain temperature in optimum fermentation time, to improve air output, and make fermentation more thorough.

Description

Technical Field

[0001] This invention relates to the field of sewage treatment technology, and more specifically to a septic tank device based on Internet of Things (IoT) monitoring of harmful gases. Background Technology

[0002] Manure wastewater is a type of waste generated from livestock farming and daily life. To utilize manure wastewater, anaerobic treatment is used to purify it.

[0003] According to patent number CN111875171A, published on November 3, 2020, a process for treating duck farm wastewater and a method for resource recovery are disclosed. This method includes the following steps: coagulation and sedimentation treatment to remove fine suspended solids and colloidal substances from the duck farm wastewater; stripping pretreatment to remove and recover ammonia nitrogen, which can prevent the inhibition of anaerobic reactions by high ammonia nitrogen levels later; anaerobic biological treatment using an anaerobic device, where facultative or obligate anaerobic bacteria are used to degrade organic matter in the duck farm wastewater; struvite sedimentation treatment, where struvite sedimentation is used for deep treatment of the anaerobic effluent; and aerobic biological treatment using an aerobic device, where the metabolic activities of aerobic microorganisms are utilized to achieve compliant discharge of the duck farm wastewater. This invention can recover resources such as ammonia, methane, and struvite while treating duck farm wastewater, and simultaneously achieves the stabilization, harmlessness, and resource recovery of the treated duck farm wastewater.

[0004] In the prior art, including the aforementioned patent, the anaerobic treatment of sewage mainly relies on fermentation for decomposition. The fermentation process involves three decomposition stages, followed by dehydration of the fermented liquid. The dehydrated fragments can be recycled. However, in industrialized treatment, fermentation is usually carried out in a centralized large fermentation tank. During fermentation, the sewage inside the tank is unevenly distributed due to its large area, resulting in unfermented portions in the final fragments. This can easily lead to seedling burn during subsequent recycling. Summary of the Invention

[0005] The purpose of this invention is to provide a septic tank device based on the Internet of Things for monitoring harmful gases, thereby solving the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a septic tank device based on the Internet of Things for monitoring harmful gases, used in an anaerobic fermentation step with a sewage-to-water ratio of 3:1 to 5.6:1, comprising:

[0007] The filtration tank filters out floating impurities from the upper layer and hard impurities from the lower layer through sedimentation, and mixes the filtered and re-blended diluted and thick sewage.

[0008] Fermentation tank: Fermentation tank with a manure-to-water ratio of 3:1 to 5.6:1 is introduced and fermentation bacteria are added for fermentation.

[0009] The suction mixer is installed at the bottom of the fermentation tank for mixing and suctioning the sewage. The suction mixer operates in a fixed phase to mix thin and thick sewage, operates in a temperature-changing phase to control the temperature, and stops operating in the methane phase.

[0010] Preferably, the fixation stage includes the period between the hydrolysis stage and the hydrogen-producing and acetic acid-producing stage, and the period before the hydrogen-producing and acetic acid-producing stage and the methane stage.

[0011] Preferably, the temperature change stages include temperatures above 50°C and temperatures below 30°C.

[0012] Preferably, the suction agitator has a suction hood at one end and a top liquid pipe and a discharge pipe at the second end that are above the liquid surface. The suction hood and the top liquid pipe are fixedly connected. The suction hood has a paddle fixedly connected to the output end of the motor. The suction hood also has a suction pipe facing the clear liquid layer. The suction pipe has an outlet hole. The suction pipe draws liquid from the clear liquid layer as the paddle rotates.

[0013] Preferably, the agitator inside the suction hood includes multiple fins, with staggered connecting posts between the fins.

[0014] Preferably, the suction agitator has a cooling tank inside, and the cooling tank encloses the motor.

[0015] Preferably, the agitator is hollow and is fixedly connected to the cooling tank, which is equipped with an inlet pipe and an outlet pipe.

[0016] Preferably, the cooling tank is provided with a pressure cover, which opens as the pressure inside the cooling tank increases.

[0017] Preferably, the top liquid tube is provided with a diffusion mechanism, the diffusion mechanism including a top ball that moves vertically along the top liquid tube, and a sensing head is provided on the top liquid tube, the sensing head facing between the top liquid tube and the top ball.

[0018] Preferably, the top ball is driven to approach and block the top liquid tube.

[0019] In the above technical solution, the septic tank equipment based on Internet of Things monitoring of harmful gases provided by the present invention has the following beneficial effects: the suction stirrer is operated in a targeted manner during the fixed stage and temperature change stage of the fermentation tank to stir the thin and thick fecal water in the fermentation tank, so as to make the temperature in the fermentation tank more uniform and to spread microorganisms. At the same time, the temperature in the fermentation tank is regulated by stirring, thereby maintaining the temperature at the optimal fermentation time, increasing the gas output, and making the fermentation more thorough. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the fermentation tank process provided in an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the fermentation tank and suction agitator provided in an embodiment of the present invention;

[0023] Figure 3 This is a cross-sectional structural diagram of the suction stirrer provided in an embodiment of the present invention;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a cross-sectional structural diagram of a suction stirrer provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Suction stirrer; 10. Discharge pipe; 11. Suction hood; 111. Paddle; 112. Stirring plate; 1121. Cooling channel; 1122. Through pipe; 12. Motor; 13. Cooling tank; 131. Liquid inlet pipe; 132. Liquid outlet pipe; 133. Pressure cover; 14. Suction pipe; 141. Liquid outlet hole; 15. Diffusion arc; 2. Fermentation tank; 21. Sealed cover; 22. Gas outlet; 23. Baffle; 3. Diffusion mechanism; 30. Top liquid pipe; 31. Top ball; 32. Slide plate; 33. Pulling part; 34. Induction head. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0029] like Figure 1-5 As shown, a septic tank device based on the Internet of Things for monitoring harmful gases is used in an anaerobic fermentation step with a sewage-to-water ratio of 3:1 to 5.6:1, comprising:

[0030] The filtration tank filters out floating impurities from the upper layer and hard impurities from the lower layer through sedimentation, and mixes the filtered and re-blended diluted and thick sewage.

[0031] Fermentation tank 2: Fermentation tank 2 is used to introduce manure water with a manure-to-water ratio of 3:1 to 5.6:1 and add fermentation bacteria for fermentation.

[0032] The suction mixer 1 is set at the bottom of the fermentation tank 2 for stirring and suctioning the fecal water. The suction mixer 1 operates in the fixed stage to mix the thin and thick fecal water, operates in the temperature change stage to control the temperature, and stops operating in the methane stage.

[0033] The fixation stages include the period between the hydrolysis stage and the hydrogen-to-acetic acid production stage, and the period before the hydrogen-to-acetic acid production stage and the methane production stage.

[0034] Specifically, the suction agitator 1 has a diffusion arc 15 inside, which facilitates the flow of fecal water. For fecal water with a ratio of 3:1 to 5.6:1, fermentation is carried out. This high liquid-to-solid ratio facilitates mixing and circulation of the fecal water by the suction agitator 1, reducing the burden on the motor 12. The added fermentation bacteria include a complex of lactic acid bacteria, yeast, Lactobacillus brucellosis, and Enterococcus faecalis. The fermentation tank 2 is equipped with a sealed cover 21, with a vent 22 for extracting the generated methane gas. After the initial addition of fermentation bacteria, a predetermined sedimentation time (60-90 minutes, after the fermentation bacteria dissolve on the surface) is allowed. Then, the suction agitator 1 is activated to mix the fermentation bacteria, and the process proceeds to the first stage: the hydrolysis stage. The temperature rises slowly, so there is no need to start the suction mixer 1 for stirring. Then, when some of the manure enters the second stage: the hydrogen and acetic acid production stage, the temperature will rise suddenly. At this time, the suction mixer 1 will be started to stir, promoting the hydrogen and acetic acid production in the second stage, so as to increase the yield of the subsequent methane stage. In this stage, the suction mixer 1 will be started or stopped according to the temperature change, so as to maintain the temperature at the optimal fermentation time and increase the gas output. During the methane stage, the temperature gradually decreases. At this time, the suction mixer 1 will be started again for stirring, and stirring will be stopped during the methane stage. After the temperature drops to the room temperature, the suction mixer 1 will be started again to open the discharge pipe 10 to discharge the fermented manure, which will be dried to obtain crushed material. The crushed material after repeated fermentation is less likely to cause seedling burn.

[0035] In the above technical solution, the suction agitator 1 is operated in a targeted manner during the fixed stage and the temperature change stage of the fermentation tank 2 to stir the thin and thick manure water in the fermentation tank 2, so as to make the temperature in the fermentation tank 2 more uniform and to spread the microorganisms. At the same time, the temperature in the fermentation tank 2 is regulated by stirring, thereby maintaining the temperature at the optimal fermentation time, increasing the gas output, and making the fermentation more thorough.

[0036] As one embodiment of the present invention, the temperature change stages include temperatures above 50°C and temperatures below 30°C.

[0037] Specifically, regarding the fermentation temperature of fecal water with a fecal-to-water ratio of 3:1 to 5.6:1, when the temperature is above 50℃, the reproduction of some microorganisms in fermentation tank 2 will be restricted. At this time, cooling down will reduce the negative impact. When the temperature drops after reaching the above temperature and is below 30℃, the reproduction of microorganisms will also be restricted. This restriction is mainly due to the aggregation and reproduction of microorganisms, which is restricted by the liquid surface of the sealing layer. At this time, stirring will help the diffusion of microorganisms.

[0038] As an embodiment of the present invention, the suction agitator 1 is provided with a suction hood 11 at the first end and a top liquid pipe 30 and a discharge pipe 10 at the second end that are higher than the liquid surface. The suction hood 11 and the top liquid pipe 30 are fixedly connected. The suction hood 11 is provided with a paddle 111 fixedly connected to the output end of the motor 12. The suction hood 11 is provided with a suction pipe 14 facing the clear liquid layer. The suction pipe 14 is provided with a liquid outlet hole 141. The suction pipe 14 rotates with the paddle 111 to suck up the liquid in the clear liquid layer.

[0039] Specifically, the first end of the suction stirrer 1 (with Figure 3 For reference, the first end is the left end and the second end is the right end. A suction hood 11 is provided. When the suction mixer 1 is started, the blades 111 rotate to suck up the lower layer of fecal water. The lower layer of fecal water has a high viscosity. As it is sucked up, it will flow along the liquid outlet 141 due to the Venturi effect, which will drive the liquid in the clear liquid layer to be sucked up and mixed, so as to mix the clear liquid layer with low resistance to microbial activity in the upper layer, thereby increasing the mixing efficiency. When fermentation bacteria are initially added, the upper layer of fecal water with more fermentation bacteria can also be sucked up and mixed.

[0040] A baffle 23 is provided on the sealed cover 21 to separate the viscous fecal water sprayed from the top liquid pipe 30, so as to maintain the viscosity of the clear liquid layer in the top liquid pipe 30.

[0041] After the initial addition of fermentation bacteria, the suction agitator 1 is activated after a predetermined settling time to mix the fermentation bacteria. Due to the Venturi effect, the liquid flows along the outlet hole 141, mixing the clear liquid layer and ensuring low resistance to microbial activity. The process then enters the first stage: hydrolysis. During hydrolysis, the temperature rises slowly, so the suction agitator 1 is not required. When some of the manure enters the second stage: hydrogen and acetic acid production, the temperature rises sharply. At this point, the suction agitator 1 is activated to promote hydrogen and acetic acid production, thus increasing the yield in the subsequent methane stage. During this stage, the suction agitator 1 is activated or deactivated based on temperature changes to maintain the temperature at the optimal fermentation time and increase gas output. During the methane stage, the temperature gradually decreases, at which point the suction agitator 1 is activated again for stirring. Stirring is stopped during the methane stage, and once the temperature drops to room temperature, the suction agitator 1 is activated again to open the discharge pipe 10, discharging the fermented manure. This discharged manure is then dried to obtain crushed material. Crushed material from repeated fermentation is less likely to cause seedling burn.

[0042] As one embodiment of the present invention, the suction hood 11 contains an agitator 112, which includes multiple fins and staggered connecting posts between the multiple fins.

[0043] Specifically, cooling channels 1121 are provided on the fins, and the cooling channels 1121 and the cooling tank 13 are fixedly connected. A through pipe 1122 is provided on the connecting column to allow cooling water to flow. The manure water that is sucked in and flows through the stirring plate 112 and spreads and flows along the connecting column between the fins to separate and mix, so as to break up the viscous part of the manure water, so as to uniform the viscosity of the manure water and uniformly ferment the process, and further avoid the situation of burning the seedlings due to the debris after drying.

[0044] After the initial addition of fermentation bacteria, the suction agitator 1 is activated after a predetermined settling time to mix the fermentation bacteria. During suction, the liquid flows along the outlet 141 due to the Venturi effect, mixing the clear liquid layer and ensuring low resistance to microbial activity. Simultaneously, the flowing fecal water diffuses through the stirring plate 112 and flows along the connecting columns between the fins to separate and mix, breaking down the viscous components. Then, the process enters the first stage: the hydrolysis stage. The temperature rise during the hydrolysis stage is slow, so the suction agitator 1 is not required. Later, when some of the fecal water enters the second stage: the hydrogen and acetic acid production stage, the temperature... The temperature will suddenly increase. At this time, the suction stirrer 1 will be started to stir, promoting the production of hydrogen and acetic acid in the second stage, so as to increase the output of the subsequent methane stage. In this stage, the suction stirrer 1 will be started or stopped according to the temperature change, so as to maintain the temperature at the optimal fermentation time and increase the gas output. During the methane stage, the temperature gradually decreases. At this time, the suction stirrer 1 will be started again to stir, and stirring will be stopped in the methane stage. After the temperature drops to the room temperature, the suction stirrer 1 will be started again to open the discharge pipe 10 to discharge the fermented manure water, which will be dried to obtain crushed material. The crushed material after repeated fermentation is less likely to cause seedling burn.

[0045] As an embodiment of the present invention, a cooling tank 13 is provided inside the suction stirrer 1, and the cooling tank 13 encloses the motor 12;

[0046] The stirring plate 112 is hollow and is fixedly connected to the cooling tank 13. The cooling tank 13 is provided with an inlet pipe 131 and an outlet pipe 132.

[0047] Specifically, the cooling tank 13 is connected to the water tank through the inlet pipe 131 and the outlet pipe 132 to cool the motor 12. When the temperature in the fermentation tank 2 is too low, the water pump at the inlet pipe 131 is stopped to stop the circulation of liquid in the cooling tank 13, so as to accumulate the temperature of the motor 12, help to raise the temperature of the manure water, and enhance the activity of microorganisms. When the temperature in the fermentation tank 2 is too high, the water pump is started to circulate, cooling the motor 12 while the cooling water also cools the stirring plate 112 with the flow, thereby increasing the cooling speed of the manure water.

[0048] After the initial addition of fermentation bacteria, the agitator 1 is activated after a predetermined settling time to mix the fermentation bacteria. Due to the Venturi effect, the liquid flows along the outlet 141, mixing the clear liquid layer and thus mixing the upper layer with low resistance to microbial activity. Simultaneously, the flowing manure diffuses through the agitator 112 and flows along the connecting columns between the fins to separate and mix, breaking down the viscous components in the manure. Then, it enters the first stage: the hydrolysis stage. The temperature rises slowly during the hydrolysis stage, so the agitator 1 is not required. Later, when some of the manure enters the second stage: the hydrogen and acetic acid production stage, the temperature rises sharply. At this point, the agitator 1 is activated to promote hydrogen and acetic acid production in the second stage, thereby increasing the yield in the subsequent methane stage. When the temperature is too high, the suction agitator 1 is started, and the water pump starts circulating. While cooling the motor 12, the cooling water also flows to cool the stirring plate 112, thereby increasing the cooling speed of the manure water. When the temperature is too low, the water pump at the inlet pipe 131 is stopped to stop the circulation of liquid in the cooling tank 13, so as to accumulate the temperature of the motor 12 and help raise the temperature of the manure water to maintain the temperature at the optimal fermentation time and increase the gas output. During the methane stage, the temperature gradually decreases. At this time, the suction agitator 1 is started again to stir, and stirring is stopped during the methane stage. After the temperature drops to the normal temperature stage, the suction agitator 1 is started again to open the discharge pipe 10 to discharge the fermented manure water, which is then dried to obtain crushed material. The crushed material after repeated fermentation is less likely to cause seedling burn.

[0049] As an embodiment of the present invention, a pressure cover 133 is provided on the cooling tank 13, and the pressure cover 133 opens as the pressure inside the cooling tank 13 increases.

[0050] Specifically, the pressure cover 133 is an elastic element that seals the cooling tank 13 in the default state. During fermentation, the growth of microorganisms produces mucus, which increases the viscosity. At this time, increasing the power of the water pump increases the pressure in the cooling tank 13, opening the pressure cover 133 to dilute the viscosity in the suction agitator 1, reduce the pressure of the motor 12, and promote the dissolution of the solidified feces during fermentation, thereby accelerating the fermentation process.

[0051] After the initial addition of fermentation bacteria, the agitator 1 is activated after a predetermined settling time to mix the fermentation bacteria. Due to the Venturi effect, the liquid flows along the outlet 141, mixing the clear liquid layer and ensuring minimal resistance to microbial activity. Simultaneously, the flowing manure diffuses through the agitator 112 and flows along the connecting columns between the fins to break down the viscous components. The process then enters the first stage: hydrolysis. The temperature rises slowly during hydrolysis, so the agitator 1 is not required. Later, when some of the manure enters the second stage: hydrogen and acetic acid production, the temperature rises sharply. At this point, the agitator 1 is activated to promote hydrogen and acetic acid production in the second stage, increasing the yield of the subsequent methane stage. If the temperature becomes too high during this stage, the agitator 1 is activated, and the water pump starts circulating the liquid. While the machine 12 is cooling, the cooling water also flows to cool the stirring plate 112, thereby increasing the cooling speed of the manure water. When the temperature is too low, the water pump at the inlet pipe 131 is stopped to stop the circulation of liquid in the cooling tank 13, so as to accumulate the temperature of the motor 12 and help raise the temperature of the manure water to maintain the temperature at the optimal fermentation time. At the same time, the power of the water pump is increased to increase the pressure in the cooling tank 13 and open the pressure cover 133 to dilute the viscosity in the suction agitator 1, reduce the pressure of the motor 12, and increase the gas output. During the methane stage, the temperature gradually decreases. At this time, the suction agitator 1 is restarted to stir, and stirring is stopped during the methane stage. After the temperature drops to the room temperature stage, the suction agitator 1 is restarted to open the discharge pipe 10 to discharge the fermented manure water, which is then dried to obtain crushed material. The crushed material after repeated fermentation is less likely to cause seedling burn.

[0052] As an embodiment of the present invention, a diffusion mechanism 3 is provided on the top liquid pipe 30. The diffusion mechanism 3 includes a top ball 31 that moves vertically along the top liquid pipe 30. A sensing head 34 is provided on the top liquid pipe 30, and the sensing head 34 faces between the top liquid pipe 30 and the top ball 31.

[0053] The top ball 31 is driven to approach the top liquid tube 30 and is blocked.

[0054] Specifically, a sliding plate 32 is provided on the top ball 31, which is slidably connected to the top liquid pipe 30. Both are provided with a pulling part 33 (the pulling part 33 is made of elastic rubber). The sensing head 34 is used to sense the pH value of the fermented manure. When the pH value deviates, acidic or alkaline liquid is added to the water tank to maintain the pH value. When the viscosity of the manure in the top liquid pipe 30 is too high, the top ball 31 is pushed by resistance and pulls open the pulling part 33. At this time, the distance between the top ball 31 and the top liquid pipe 30 increases, which facilitates the flow out of the viscous manure. When the viscosity of the manure in the top liquid pipe 30 is within the normal range, the top ball 31 is pushed by resistance, and there is a gap between it and the top liquid pipe 30 so as to spray manure in the part above the liquid surface, so as to promote the mixing of manure with the upper liquid surface.

[0055] After the initial addition of fermentation bacteria, the suction agitator 1 is activated after a predetermined settling time to mix the fermentation bacteria. During suction, the liquid flows along the outlet hole 141 due to the Venturi effect, mixing the clear liquid layer. This mixes the upper clear liquid layer with low resistance to microbial activity. Simultaneously, the flowing fecal water diffuses through the stirring plate 112 and flows along the connecting column between the fins to separate and mix, breaking down the viscous components in the fecal water. Then, the process enters the first stage: the hydrolysis stage. The temperature rise rate in the hydrolysis stage is slow, so the suction agitator 1 does not need to be activated. The mixture is stirred, and when some of the wastewater enters the second stage—the hydrogen and acetic acid production stage—the temperature will rise sharply. At this time, the suction agitator 1 is activated to promote the hydrogen and acetic acid production in the second stage, thereby increasing the yield of the subsequent methane stage. During this stage, if the temperature is too high, the suction agitator 1 is activated, and the water pump starts circulating. While cooling the motor 12, the cooling water also flows to cool the agitator plate 112, thereby increasing the cooling rate of the wastewater. If the temperature is too low, the water pump at the inlet pipe 131 is stopped to stop cooling. The circulation of liquid in tank 13 accumulates the temperature of motor 12, helping to raise the temperature of the manure water and maintain it at the optimal fermentation time. Simultaneously, increasing the water pump power increases the pressure within cooling tank 13, opening pressure cap 133 to dilute the viscosity in suction agitator 1, reducing the pressure on motor 12 and increasing the gas output. During the methane stage, the temperature gradually decreases; at this point, suction agitator 1 is restarted for stirring, and stirring is stopped during the methane stage. Once the temperature drops to room temperature, suction agitator 1 is restarted and the discharge pipe is opened. 10. After the fermentation of the manure water is discharged, it is dried to obtain crushed material. The crushed material after repeated fermentation is less likely to cause seedling burn. When the viscosity of the manure water in the top liquid pipe 30 is too high, the top ball 31 is pushed by the resistance to pull open the pulling part 33. At this time, the distance between the top ball 31 and the top liquid pipe 30 increases, which facilitates the flow out of the viscous manure water. When the viscosity of the manure water in the top liquid pipe 30 is within the normal range, the top ball 31 is pushed by the resistance, and there is a gap between it and the top liquid pipe 30, so as to spray manure water in the part above the liquid surface, which promotes the mixing of manure water with the upper liquid surface.

[0056] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A method for operating a septic tank device based on Internet of Things (IoT) for monitoring harmful gases, used in an anaerobic fermentation step with a sewage-to-water ratio of 3:1 to 5.6:1, characterized in that... The septic tank equipment includes: The filtration tank filters out floating impurities from the upper layer and hard impurities from the lower layer through sedimentation, and mixes the filtered and re-blended diluted and thick sewage. Fermentation tank (2): Fermentation tank (2) with a manure-to-water ratio of 3:1 to 5.6:1 is introduced into the fermentation tank (2) and fermentation bacteria are added for fermentation; The suction mixer (1) is set at the bottom of the fermentation tank (2) for mixing and suctioning the fecal water. The suction mixer (1) operates in the fixed stage to mix the thin and thick fecal water, operates in the temperature change stage to control the temperature, and stops operating in the methane stage. The fixed phases include the period between the hydrolysis phase and the hydrogen-producing and acetic acid-producing phase, and the period between the hydrogen-producing and acetic acid-producing phase and the methane phase. The temperature change stages include times when the temperature is above 50°C and times when the temperature is below 30°C. The suction agitator (1) is provided with a suction hood (11) at the first end and a top liquid pipe (30) and a discharge pipe (10) at the second end that are higher than the liquid surface. The suction hood (11) and the top liquid pipe (30) are fixedly connected. The suction hood (11) is provided with a blade (111) fixedly connected to the output end of the motor (12). The suction hood (11) is provided with a suction pipe (14) facing the clear liquid layer. The suction pipe (14) is provided with a liquid outlet hole (141). The suction pipe (14) rotates with the blade (111) to suck up the liquid in the clear liquid layer. The process also includes the following steps: After the initial addition of fermentation bacteria, the suction stirrer (1) is started after a predetermined sedimentation time to mix the fermentation bacteria. During the suction process, the liquid in the clear liquid layer will be mixed due to the Venturi effect flowing along the liquid outlet (141), so as to mix the clear liquid layer with low resistance to microbial activity. Then, the process enters the first stage: the hydrolysis stage. The temperature rise rate in the hydrolysis stage is slow, so it is not necessary to start the suction stirrer (1) for stirring. Then, when some of the fecal water enters the second stage: the hydrogen production and acetic acid production stage, the temperature will rise sharply. At this time, the suction is started. The stirrer (1) stirs to promote the production of hydrogen and acetic acid in the second stage, so as to increase the output of the subsequent methane stage. In this stage, the suction stirrer (1) starts or stops according to the temperature change, so as to maintain the temperature at the optimal fermentation time and increase the gas output. When the methane stage is carried out, the temperature gradually decreases. At this time, the suction stirrer (1) is started again to stir, and the stirring is stopped in the methane stage. After the temperature drops to the normal temperature stage, the suction stirrer (1) is started again to open the discharge pipe (10) to discharge the fermented manure water, and then it is dried to obtain crushed material.

2. The operation method of a septic tank device for monitoring harmful gases based on the Internet of Things according to claim 1, characterized in that, The agitator (112) inside the suction hood (11) includes multiple fins, and staggered connecting columns are provided between the multiple fins.

3. The operation method of a septic tank device for monitoring harmful gases based on the Internet of Things according to claim 2, characterized in that, The suction agitator (1) has a cooling tank (13) inside, and the cooling tank (13) encloses the motor (12).

4. The operation method of a septic tank device for monitoring harmful gases based on the Internet of Things according to claim 3, characterized in that, The stirring plate (112) is hollow and is fixedly connected to the cooling tank (13). The cooling tank (13) is provided with an inlet pipe (131) and an outlet pipe (132).

5. The operation method of a septic tank device for monitoring harmful gases based on the Internet of Things according to claim 4, characterized in that, A pressure cover (133) is provided on the cooling tank (13), and the pressure cover (133) opens as the pressure inside the cooling tank (13) increases.

6. The operation method of a septic tank device for monitoring harmful gases based on the Internet of Things according to claim 5, characterized in that, A diffusion mechanism (3) is provided on the top liquid tube (30). The diffusion mechanism (3) includes a top ball (31) that moves vertically along the top liquid tube (30). A sensing head (34) is provided on the top liquid tube (30). The sensing head (34) faces between the top liquid tube (30) and the top ball (31).

7. The operation method of a septic tank device for monitoring harmful gases based on the Internet of Things according to claim 6, characterized in that, The top ball (31) is driven to approach the top liquid tube (30) and block it.

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