Directional fermentation device for kitchen waste slurry and kitchen waste treatment system

Abstract

The utility model provides a kitchen waste slurry directional fermentation device and a kitchen waste treatment system. The kitchen waste treatment system comprises the kitchen waste slurry directional fermentation device. The directional fermentation device for the kitchen waste slurry comprises a tank body, an expansion piece and a stirring structure, the tank body is provided with a feed port for adding kitchen waste centrifugate, a discharge port for discharging acidizing fluid and a reserved port which is formed in the center of the top of the tank body and is used for mounting a water seal; the expansion piece covers the reserved opening, a mounting opening is formed in the center of the expansion piece, and the stirring structure is mounted at the mounting opening and extends into the tank body through the reserved opening from the mounting opening; the expansion piece is provided with a water seal structure, and an odor connector used for being connected with an odor tank is reserved in the expansion piece. According to the directional fermentation device for the kitchen waste slurry, the expansion part and the stirring structure are added on the basis of the tank body without changing the original tank body and the internal structure thereof, so that the stirring function can be expanded, the improvement cost of the directional fermentation device for the kitchen waste slurry is reduced, and meanwhile, kitchen waste centrifugate can fully react to form acidizing fluid.

Description

Technical Field

[0001] This application belongs to the field of kitchen waste treatment technology, and more specifically, relates to a kitchen waste slurry directional fermentation device and a kitchen waste treatment system. Background Technology

[0002] Food waste includes leftover food and food processing scraps generated in daily life. It is characterized by high water content, high organic matter content, high oil content, and easy biodegradability. If not properly disposed of, food waste not only causes significant harm to the urban environment but also results in serious resource waste.

[0003] Currently, the general methods for treating kitchen waste include the following steps: first, sorting the kitchen waste to remove non-degradable or toxic substances; then, chopping or pulverizing the kitchen waste to reduce particle size, increase surface area, and promote contact with microorganisms; next, using a three-phase centrifuge to separate solids and liquids to obtain kitchen waste centrifuged liquid; finally, acidifying the kitchen waste centrifuged liquid using a kitchen waste slurry fermentation device to form an acidified liquid. However, the acidification reaction in current kitchen waste slurry fermentation devices is not sufficient, resulting in poor acidification effects and wasted resources. Utility Model Content

[0004] The purpose of this application is to provide a directional fermentation device for kitchen waste slurry and a kitchen waste treatment system to solve the technical problem of insufficient acidification reaction in existing kitchen waste slurry fermentation devices.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a directional fermentation device for kitchen waste slurry is provided, comprising a tank, an extension component, and a stirring structure; the tank has an inlet for adding kitchen waste centrifuged liquid, an outlet for discharging acidified liquid, and a reserved opening formed at the top center of the tank for installing a water seal; the extension component covers the outside of the reserved opening, and has an installation port at its center; the stirring structure is installed at the installation port and extends into the tank from the installation port through the reserved opening; the extension component is equipped with a water seal structure, and the extension component has a reserved odor interface for connecting an odor canister.

[0006] In some embodiments, the top center of the tank includes a protrusion, and the reserved opening is formed at the center of the protrusion; the bottom of the extension has an opening, and the bottom periphery of the extension abuts against the protrusion and surrounds the reserved opening, and the protrusion and the extension together form a gas-liquid separation chamber.

[0007] In some embodiments, both the extension and the protrusion are cylindrical, and the outer peripheral surface of the extension is flush with the outer peripheral surface of the protrusion.

[0008] In some embodiments, the stirring structure includes a variable frequency motor mounted outside the extension, a stirring shaft connected to the output shaft of the variable frequency motor, and a set of stirring paddles distributed axially along the stirring shaft; wherein the stirring shaft extends to the bottom of the tank; and the set of stirring paddles includes at least two stirring paddles that are spaced apart circumferentially along the stirring shaft.

[0009] In some embodiments, the bottom of the tank has a guide surface that slopes downward from the periphery of the tank towards the bottom center. The tank has a sand discharge port and a sand discharge inner tube that extends from the sand discharge port to the bottom center of the tank.

[0010] In some embodiments, the sand discharge port is externally connected to a sand discharge pipe, the sand discharge pipe is equipped with a thermometer for detecting the internal temperature of the tank, and a heating element is installed in the tank.

[0011] In some embodiments, the sand discharge pipe is equipped with a pressure level gauge for detecting the liquid level in the tank, the tank has an overflow port near the top, and an overflow valve is installed at the overflow port; the overflow port is connected to an external buffer tank, and the tank also has a return port, which is connected to the buffer tank.

[0012] In some embodiments, the outer sand discharge pipe is equipped with a pH meter for detecting the pH value inside the tank.

[0013] In some embodiments, the tank body also has a dosing interface for connecting an iron salt dosing device.

[0014] On the other hand, this application also provides a kitchen waste treatment system, including the above-mentioned kitchen waste slurry directional fermentation device.

[0015] The beneficial effects of the directional fermentation device for kitchen waste slurry and the kitchen waste treatment system provided in this application are as follows: By installing an extension on the tank body, covering the outside of the reserved opening originally used for installing the water seal, and installing a stirring structure, a water seal structure, and an odor inlet on the extension, the stirring structure extends into the tank body from the installation opening through the reserved opening to uniformly stir the kitchen waste centrifuged liquid in the tank, so that the kitchen waste centrifuged liquid can fully contact and react with the yeast, and be directionally converted into small molecule acids such as acetic acid and propionic acid, which can then be used to promote subsequent resource utilization. For example, in the anaerobic fermentation process, the small molecule acids can serve as substrates and be further decomposed by microorganisms into biogas to form a usable resource. In addition, in this application, without changing the original tank body and its internal structure, the stirring function can be expanded by adding an extension and a stirring structure to the tank body, thereby reducing the improvement cost of the directional fermentation device for kitchen waste slurry. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the directional fermentation device for kitchen waste slurry provided in the embodiments of this application;

[0018] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0019] The following are the labeling elements in the figure:

[0020] 100. Tank body; 110. Inlet; 120. Outlet; 130. Reserved opening; 140. Protrusion; 141. Second top wall; 142. Second side wall; 150. Guide surface; 160. Sand discharge port; 170. Overflow port; 180. Return port; 190. Dosing interface; 200. Extension component; 210. Mounting port; 220. Odor interface; 230. Gas-liquid separation chamber; 240. First top wall; 250, first side wall; 300, stirring structure; 310, variable frequency motor; 320, stirring shaft; 330, stirring paddle assembly; 331, stirring paddle; 400, water seal structure; 500, sand discharge inner pipe; 600, sand discharge outer pipe; 700, thermometer; 800, pressure level gauge; 900, pH meter; 1000, overflow valve; 1, iron salt dosing device; 2, buffer tank. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] Please see Figure 1 and Figure 2 The directional fermentation device for kitchen waste slurry provided in this application will now be described. This directional fermentation device for kitchen waste slurry is used to directionally convert centrifuged kitchen waste liquid into small molecule acids such as acetic acid and propionic acid to promote subsequent resource utilization. For example, in the anaerobic fermentation process, the small molecule acids can serve as substrates and be further decomposed by microorganisms into biogas to form a usable resource.

[0026] The directional fermentation device for kitchen waste slurry includes a tank 100, an extension 200, and a stirring structure 300. The tank 100 has an inlet 110 for adding kitchen waste centrifuged liquid, an outlet 120 for discharging acidified liquid, and a reserved opening 130 formed at the top center of the tank 100 for installing a water seal. The extension 200 covers the outside of the reserved opening 130, and the center of the extension 200 has an installation opening 210. The stirring structure 300 is installed at the installation opening 210 and extends into the tank 100 from the installation opening 210 through the reserved opening 130. The extension 200 is equipped with a water seal structure 400, and the extension 200 has a reserved odor interface 220 for connecting an odor tank.

[0027] It should be noted that the reserved port 130 refers to the fact that, without the extension 200 and stirring structure 300, the water seal structure 400 can be installed at the reserved port 130 to seal the tank 100 and prevent odor leakage. However, considering that the contact between the centrifuged liquid of kitchen waste and yeast (or other specific bacteria) in the existing directional fermentation device for kitchen waste slurry is insufficient, the centrifuged liquid of kitchen waste cannot be fully converted into small molecule acids such as acetic acid and propionic acid. Therefore, a stirring structure 300 is needed to stir the centrifuged liquid of kitchen waste so that it can fully contact and react with the yeast. However, due to the large structure of the directional fermentation device for kitchen waste slurry, the design and manufacturing process is very large, and redesigning the directional fermentation device for kitchen waste slurry would result in excessive waste of costs. Therefore, the researchers of this application hope to improve the existing directional fermentation device for kitchen waste slurry to reduce costs. Specifically, an extension component 200 is added to the existing directional fermentation device for kitchen waste slurry. The stirring structure 300, the water seal structure 400, and the odor interface 220 are all installed on the extension component 200, thereby achieving the purpose of adding a stirring function to the existing directional fermentation device for kitchen waste slurry.

[0028] The directional fermentation device for kitchen waste slurry in this embodiment of the application includes an extension 200 on the tank 100, which covers the exterior of the reserved opening 130 originally used for installing the water seal. A stirring structure 300, a water seal structure 400, and an odor inlet 220 are installed on the extension 200. The stirring structure 300 extends into the tank 100 from the installation opening 210 through the reserved opening 130 to uniformly stir the kitchen waste centrifuged liquid in the tank 100. This ensures sufficient contact and reaction between the kitchen waste centrifuged liquid and yeast, and directs its conversion into small molecule acids such as acetic acid and propionic acid. These acids can then be used to promote subsequent resource utilization. For example, in anaerobic fermentation, the small molecule acids can serve as substrates and be further decomposed into biogas by microorganisms, forming a usable resource. Furthermore, this application expands the stirring function and reduces the improvement cost of the directional fermentation device for kitchen waste slurry by adding the extension 200 and the stirring structure 300 to the tank 100 without changing its original structure.

[0029] In some embodiments, please refer to Figure 1 The feed inlet 110 is located near the top of the tank 100 so that the food waste centrifuged liquid can be injected from the top of the tank 100 downwards into the tank 100, so that the food waste centrifuged liquid can fill all parts of the tank 100, so that the food waste centrifuged liquid can fully contact and mix with the yeast in the tank 100, and fully react, and so that the food waste centrifuged liquid can be fully stirred by the stirring structure 300.

[0030] Specifically, the feed inlet 110 is located at a height of 10.65m above the tank body 100.

[0031] In some embodiments, please refer to Figure 1 The discharge port 120 is located near the bottom of the tank 100 so that the acidified liquid after the acidification reaction can be discharged under its own gravity.

[0032] Specifically, the discharge port 120 is located at a height of 1.2 mm above the tank body 100.

[0033] In some embodiments, the tank body 100 and the extension 200 are formed by concrete casting.

[0034] In some embodiments, please refer to Figure 1 and Figure 2 The top center of the tank 100 includes a protrusion 140, with a pre-reserved opening 130 formed at the center of the protrusion 140. The bottom of the extension 200 has an opening, and the bottom periphery of the extension 200 abuts against the protrusion 140 and surrounds the pre-reserved opening 130. The protrusion 140 and the extension 200 together form a gas-liquid separation chamber 230. Due to the difference in density between gas and liquid, the liquid in the tank 100 will sink under the action of gravity, while the gas generated in the tank 100 will rise to the gas-liquid separation chamber 230 and be stored. Finally, it flows to the odor tank through the odor inlet 220.

[0035] In some embodiments, both the extension 200 and the protrusion 140 are cylindrical, and the outer peripheral surface of the extension 200 is flush with the outer peripheral surface of the protrusion 140. This arrangement ensures that the overall appearance of the directional fermentation device for kitchen waste slurry is neat, as the extension 200 only increases the height of the protrusion 140 without significantly altering the surface of the device.

[0036] For details, please refer to Figure 2 The extension 200 includes a first top wall 240 and a first side wall 250, which are integrally connected. The first top wall 240 is circular, and the first side wall 250 is cylindrical. The first side wall 250 is formed on the bottom periphery of the first top wall 240. The mounting port 210 is located at the center of the first top wall 240, and the water seal structure 400 and the odor inlet 220 are located on different sides of the mounting port 210.

[0037] The protrusion 140 includes a second top wall 141 and a second side wall 142. The second side wall 142 is formed on the bottom periphery of the second top wall 141. The second top wall 141 is circular, and the second side wall 142 is cylindrical. The second side wall 142 is integrally connected to the other parts of the tank body 100. A pre-reserved opening 130 is formed at the center of the second top wall 141. The first top wall 240 is parallel to and spaced apart from the second top wall 141. The periphery of the first side wall 250 abuts against the top periphery of the second top wall 141, and the outer peripheral surface of the first side wall 250 is flush with the outer peripheral surface of the second side wall 142.

[0038] In some embodiments, please refer to Figure 1 and Figure 2 The stirring structure 300 includes a variable frequency motor 310 installed outside the extension 200, a stirring shaft 320 connected to the output shaft of the variable frequency motor 310, and a stirring paddle assembly 330 distributed along the axial direction of the stirring shaft 320; wherein the stirring shaft 320 extends to the bottom of the tank 100.

[0039] Specifically, the variable frequency motor 310 is mounted on the outside of the extension member 200, and the stirring shaft 320 extends from the mounting port 210 of the extension member 200 and extends to the bottom of the tank body 100 via the reserved port 130. That is, the two opposite ends of the stirring shaft 320 are respectively rotatably mounted on the bottom of the tank body 100 and the extension member 200, ensuring the rotational stability of the stirring shaft 320. In addition, bearings can be provided at the opposite ends of the stirring shaft 320 to further improve the rotational stability of the stirring shaft 320.

[0040] Each stirring paddle assembly 330 is distributed sequentially at intervals along the axial direction of the stirring shaft 320, which ensures that the food waste centrifuged liquid in the tank 100 is uniformly stirred along the axial direction, and ensures that the food waste centrifuged liquid reacts uniformly along the axial direction of the tank 100.

[0041] The number of agitator assemblies 330 is at least two, with at least one agitator assembly 330 located near the bottom of the tank 100 and at least one agitator assembly 330 located near the top of the tank 100. Specifically, the number of agitator assemblies 330 can be set according to the actual height of the tank 100.

[0042] In some embodiments, please refer to Figure 1 The mixing paddle assembly 330 includes at least two mixing paddles 331 that are sequentially spaced apart along the circumference of the mixing shaft 320. By arranging multiple mixing paddles 331 along the circumference, each mixing paddle 331 can mix the food waste centrifuged liquid at different circumferential positions during the rotation of the mixing shaft 320, thereby ensuring the uniformity of mixing.

[0043] In some embodiments, please refer to Figure 1The tank body 100 has a guide surface 150 at its bottom, which slopes downwards from the perimeter of the tank body 100 towards the bottom center. The tank body 100 has a sand discharge port 160 and a sand discharge inner pipe 500, which extends from the sand discharge port 160 to the bottom center of the tank body 100. Specifically, solid impurities generated during the reaction of kitchen waste centrifuged liquid with yeast may include incompletely decomposed particulate matter, sand, or other non-organic substances. These impurities may not be effectively utilized during fermentation and may hinder microbial activity, affecting biogas generation and organic matter conversion. In this embodiment, by providing a guide surface 150 at the bottom of the tank body 100, the sediment can be guided along the guide surface 150 to the bottom center of the tank body 100, and then discharged outwards through the sand discharge inner pipe 500.

[0044] Optionally, the guide surface 150 can be a conical surface, a concave arc surface, or a convex arc surface.

[0045] Specifically, the sand discharge port 160 is set at a height of 1.2mm. The sand discharge port is connected to the sand discharge tank through the sand discharge outer pipe 600, and can be used for other purposes or poured out later.

[0046] In some embodiments, please refer to Figure 1 The external sand discharge port 160 is connected to a sand discharge pipe 600, which is equipped with a thermometer 700 for detecting the temperature inside the tank 100. A heating element (not shown) is installed inside the tank 100. To enable the food waste centrifuged liquid to react with yeast and be directionally converted into small molecule acids such as acetic acid and propionic acid, the temperature and pH value inside the tank 100 must meet certain requirements. In this embodiment, the thermometer 700 can detect the temperature inside the tank 100 in real time and feed it back to the main controller. When the temperature inside the tank 100 is low, the heating element can heat the tank 100 to maintain the temperature within a certain range, allowing the food waste centrifuged liquid to react with yeast and be directionally converted into small molecule acids such as acetic acid and propionic acid.

[0047] Alternatively, the heating element can be a heating rod, a heating tube, or other heating structures.

[0048] In some embodiments, please refer to Figure 1The outer sand discharge pipe 600 is equipped with a pressure level gauge 800 for detecting the liquid level inside the tank 100. Near the top of the tank 100, there is an overflow port 170, and an overflow valve 1000 is installed at the overflow port 170. The pressure level gauge 800 is used to detect the liquid level inside the tank 100 in real time. If gas generation during the feeding process causes the liquid level to exceed the preset height, the overflow valve 1000 can be opened, allowing the food waste centrifuged liquid inside the tank 100 to flow out from the overflow port 170 to the buffer tank 2 for buffering. When the liquid level subsequently decreases, the food waste centrifuged liquid in the buffer tank 2 is injected back into the tank 100 for re-reaction. This setup prevents the liquid inside the tank 100 from becoming too high and entering the gas-liquid separation chamber 230, and also prevents liquid from being directly discharged from the odor inlet 220.

[0049] In some embodiments, please refer to Figure 1 The overflow port 170 is connected to the external buffer tank 2, and the tank body 100 also has a return port 180, which is connected to the buffer tank 2. Specifically, the liquid flowing out of the overflow port 170 flows into the buffer tank 2 for buffering. When the liquid level in the tank body 100 drops, the liquid in the external buffer tank 2 can be returned to the tank body 100 through the return port 180, and the acidification reaction can continue in the tank body 100.

[0050] The pressure level gauge 800 is a device that measures liquid level by utilizing the pressure applied by the liquid to a sensor; any commercially available pressure level gauge can be used. The overflow valve 1000 is a controllable on / off valve; the controller operates the overflow valve 1000 based on feedback from the pressure level gauge 800.

[0051] In some embodiments, please refer to Figure 1 A pH meter 900 is installed on the outer sand discharge pipe 600 to detect the pH value inside the tank 100. To enable the food waste centrifuged liquid to react with yeast and be directionally converted into small molecule acids such as acetic acid and propionic acid, the pH value inside the tank 100 needs to meet certain requirements. In this embodiment, by setting the pH meter 900, the pH value inside the tank 100 can be detected in real time. When the pH value is too high, excess acidified material can be discharged through the discharge port 120. When the pH value is too low, fresh material can be added to the tank 100 through the inlet port 110 to adjust the pH value inside the tank 100, ensuring that the pH value inside the tank 100 is always within the preset range, thereby ensuring that the food waste centrifuged liquid can react with yeast and be directionally converted into small molecule acids such as acetic acid and propionic acid.

[0052] In some embodiments, please refer to Figure 1The tank 100 also has a dosing interface 190 for connecting the iron salt dosing device 1. Through the dosing interface 190, the iron salt dosing device 1 can precisely add the iron salt solution into the tank 100 via a pipeline, adjusting the dosage as needed to achieve the best treatment effect. This ensures that during the acidification process, the iron ions in the water react with other substances to achieve the desired treatment purpose, such as improving water clarity, reducing scaling, or improving the efficiency of subsequent treatment steps.

[0053] On the other hand, this application also provides a food waste treatment system, including the aforementioned directional fermentation device for food waste slurry. Through the installation of the aforementioned directional fermentation device, this food waste treatment system can fully utilize food waste to obtain more useful resources, resulting in higher utilization efficiency.

[0054] Specifically, the food waste treatment system may also include a sorting device, a shredding device, a three-phase centrifuge, and an ozone fermentation device. The sorting device is used to sort the food waste, removing non-degradable or toxic substances; the shredding device is used to chop or pulverize the food waste to reduce particle size, increase surface area, and promote contact with microorganisms; the three-phase centrifuge is used to perform solid-liquid separation to obtain food waste centrifugal liquid; the food waste slurry fermentation device is used to acidify the food waste centrifugal liquid to form an acidified liquid; and the ozone fermentation device is used to further decompose the acidified liquid to form biogas for application.

[0055] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A directional fermentation device for kitchen waste slurry, characterized in that, It includes a tank body, an extension component, and a stirring structure; the tank body has an inlet for adding food waste centrifuged liquid, an outlet for discharging acidified liquid, and a reserved opening formed at the top center of the tank body for installing a water seal; The extension is fitted over the outside of the reserved opening, and the extension has a mounting port at its center. The stirring structure is installed at the mounting port and extends into the tank from the mounting port through the reserved opening. The extension component is equipped with a water seal structure, and the extension component has a reserved odor interface for connecting the odor canister.

2. The directional fermentation device for kitchen waste slurry as described in claim 1, characterized in that, The top center of the tank includes a protrusion, and the reserved opening is formed at the center of the protrusion; the bottom of the extension has an opening, and the bottom periphery of the extension abuts against the protrusion and surrounds the reserved opening. The protrusion and the extension together form a gas-liquid separation chamber.

3. The directional fermentation device for kitchen waste slurry as described in claim 2, characterized in that, Both the extension and the protrusion are cylindrical, and the outer peripheral surface of the extension is flush with the outer peripheral surface of the protrusion.

4. The directional fermentation device for kitchen waste slurry as described in any one of claims 1 to 3, characterized in that, The stirring structure includes a variable frequency motor installed outside the extension, a stirring shaft connected to the output shaft of the variable frequency motor, and a set of stirring blades distributed along the axial direction of the stirring shaft; wherein the stirring shaft extends to the bottom of the tank; the set of stirring blades includes at least two stirring blades that are spaced apart in sequence along the circumference of the stirring shaft.

5. The directional fermentation device for kitchen waste slurry as described in any one of claims 1 to 3, characterized in that, The bottom of the tank has a guide surface that slopes downward from the perimeter of the tank towards the bottom center. The tank has a sand discharge port and a sand discharge inner tube that extends from the sand discharge port to the bottom center of the tank.

6. The directional fermentation device for kitchen waste slurry as described in claim 5, characterized in that, The external connection of the sand discharge port is a sand discharge pipe, and the sand discharge pipe is equipped with a thermometer for detecting the internal temperature of the tank. A heating element is installed in the tank.

7. The directional fermentation device for kitchen waste slurry as described in claim 6, characterized in that, The outer sand discharge pipe is equipped with a pressure level gauge for detecting the liquid level inside the tank. The tank has an overflow port near the top, and an overflow valve is installed at the overflow port. The overflow port is connected to an external buffer tank. The tank also has a return port, which is connected to the buffer tank.

8. The directional fermentation device for kitchen waste slurry as described in claim 6, characterized in that, The outer sand discharge pipe is equipped with a pH meter for detecting the pH value inside the tank.

9. The directional fermentation device for kitchen waste slurry as described in any one of claims 1 to 3, characterized in that, The tank also has a dosing interface for connecting an iron salt dosing device.

10. A kitchen waste treatment system, characterized in that, Includes the directional fermentation device for kitchen waste slurry as described in any one of claims 1 to 9.

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