Waste disposal equipment

Abstract

To provide a waste treatment device that can separate livestock farm waste into solid and liquid materials and remove harmful substances as much as possible. [Solution] The waste treatment device comprises a case 11, a separation chamber 12 provided at the lower end of the case, an aerobic fermentation chamber 29 provided at the upper end, an anaerobic fermentation chamber 20 provided in the case so as to be located between them, a first rotating shaft 13 extending along the axial direction of the case and provided to penetrate the aerobic fermentation chamber, the anaerobic fermentation chamber and the separation chamber, a first motor 28 provided on the upper surface of the aerobic fermentation chamber to rotate the shaft, a first stirring rod 25 fixed to the first rotating shaft so as to be located in the aerobic fermentation chamber, a supply channel 26 formed in the lid for supplying waste, a crushing mechanism 24 fixed to the case so as to be located in the aerobic fermentation chamber, a gas storage chamber formed in the peripheral wall of the case, a pump provided therein, and a gas supply mechanism that supplies gas from the gas storage chamber to the aerobic fermentation chamber by the pump.

Description

Technical Field

[0001] The present invention relates to a sewage treatment device.

Background Art

[0002] Livestock farming sewage is high-concentration organic sewage containing a large number of pathogens. Therefore, if it is directly discharged without treatment, the quality of groundwater will be polluted.

[0003] As in the prior document CN111420460A, the solid matter and liquid matter in livestock farming sewage cannot be separated, and a single aerobic fermentation or a single anaerobic fermentation cannot fully decompose the harmful substances in the sewage. Therefore, even if the sewage is treated, a large number of microorganisms remain, and there is still a risk of environmental pollution.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a sewage treatment device that can separate solid matter and liquid matter in livestock farming sewage and remove harmful substances in the sewage as much as possible.

Means for Solving the Problems

[0005] According to the present invention, a bottomed cylindrical case; a separation chamber provided at the lower end of the case to separate solid and liquid matter from waste; an aerobic fermentation chamber provided at the upper end of the case; an anaerobic fermentation chamber provided in the case so as to be located between the separation chamber and the aerobic fermentation chamber; a first rotating shaft extending along the axial direction of the case and penetrating the aerobic fermentation chamber, the anaerobic fermentation chamber, and the separation chamber; a first motor provided on the upper surface of the aerobic fermentation chamber to rotate the first rotating shaft around the axial direction; and a first stirring rod fixed to the first rotating shaft so as to be located in the aerobic fermentation chamber. A waste treatment apparatus is provided, comprising: a lid that covers the upper end of the case as an open end; a supply channel formed in the lid so as to penetrate the lid and through which waste is supplied; a first liquid control valve provided in the supply channel so as to be able to open and close the supply channel; a crushing mechanism located in the aerobic fermentation chamber and fixed to the case to crush solid matter in the waste into fine solid matter; a gas storage chamber formed in the peripheral wall of the case; a pump provided in the gas storage chamber; and a gas supply mechanism that supplies the gas stored in the gas storage chamber to the aerobic fermentation chamber by the pump, wherein the anaerobic fermentation chamber is in communication with the aerobic fermentation chamber and the separation chamber. [Effects of the Invention]

[0006] According to this invention, it is possible to separate solid and liquid materials from livestock farm waste and to remove harmful substances from the waste as much as possible. [Brief explanation of the drawing]

[0007] [Figure 1] This is a schematic perspective view showing the waste treatment apparatus according to this embodiment. [Figure 2] This is a cross-sectional view of line AA in Figure 1. [Figure 3] Figure 2 is an enlarged view showing the grinding mechanism. [Figure 4] This is an enlarged view showing the gas supply mechanism in Figure 2. [Figure 5] This is an enlarged view showing the extraction mechanism in Figure 2. [Figure 6] Figure 5 is a cross-sectional view of the BB line. [Figure 7] Figure 5 is a schematic perspective view showing the separator. [Modes for carrying out the invention]

[0008] Hereinafter, embodiments of the present invention (hereinafter referred to as "these embodiments") will be described with reference to the attached drawings. Throughout this specification, the same elements will be denoted by the same reference numerals.

[0009] (Configuration of waste treatment equipment) First, we will explain in detail the configuration of the waste treatment equipment with reference to Figures 1 through 7.

[0010] The waste treatment device according to this embodiment is a waste treatment device for livestock farming waste. As shown in Figures 1 to 7, the waste treatment device comprises a bottomed cylindrical case 11, a separation chamber 12 provided at the lower end of the case to separate solid and liquid matter from livestock farming waste (hereinafter also simply referred to as waste), an aerobic fermentation chamber 29 provided at the upper end of the case 11, an anaerobic fermentation chamber 20 provided in the case 11 so as to be located between the separation chamber 12 and the aerobic fermentation chamber 29, a first rotating shaft 13 extending along the axial direction of the case 11 and penetrating the aerobic fermentation chamber 29, the anaerobic fermentation chamber 20 and the separation chamber 12, a first motor 28 provided on the upper surface of the aerobic fermentation chamber 29 so as to rotate the first rotating shaft 13 around the axial direction, and located in the aerobic fermentation chamber 29 The apparatus comprises a first stirring rod 25 fixed to the first rotating shaft 13 of the sea urchin, a lid (not shown) that covers the upper end of the case 11 as an open end, a supply channel 26 formed in the lid so as to penetrate the lid and through which waste is supplied, a first liquid control valve 27 provided in the supply channel 26 so as to be able to open and close the supply channel 26, a grinding mechanism 50 located in the aerobic fermentation chamber 29 and fixed to the case 11 to grind solid matter in the waste into fine solid matter (i.e., fine particles), a gas storage chamber 40 formed in the peripheral wall of the case 11, a pump 39 provided in the gas storage chamber 40, and a gas supply mechanism 51 that supplies gas (specifically, high-pressure gas) stored in the gas storage chamber 40 to the aerobic fermentation chamber 29 by the pump 39.

[0011] As described later, the anaerobic fermentation chamber 20 is in communication with the aerobic fermentation chamber 29 and the separation chamber 12. Here, the waste includes both liquid and solid materials. The case 11 may consist of an upper case and a lower case that are connected to each other. The first rotating shaft 13 has its upper end connected to the first motor 28 and its lower end rotatably supported at the bottom of the case 11.

[0012] Furthermore, an external hose (not shown) connected to a supply source (not shown) is connected to the supply channel 26, so that waste flowing from the supply source is supplied to the aerobic fermentation chamber 29 via the external hose and the supply channel 26. In this embodiment, the first stirring rod 25 is located below the crushing mechanism 50. This allows the length of the first stirring rod 25, which extends along the radial direction perpendicular to the axial direction, to be made as large as possible without worrying about interference between the first stirring rod 25 and the crushing mechanism 50 (in this embodiment, when the first rotating shaft 13 is rotated to a predetermined position, the first stirring rod 25 is configured to overlap with the crushing mechanism 50 along the radial direction). As a result, the stirring effect of the waste in the aerobic fermentation chamber 29 can be improved.

[0013] The waste treatment device further includes a first partition plate (not shown) provided between an aerobic fermentation chamber 29 and an anaerobic fermentation chamber 20, a first liquid passage 18 penetrating the first partition plate, a second liquid control valve 49 provided in the first liquid passage 18 so as to be able to open and close the first liquid passage 18, a first gas passage 23 communicating with the outside and the anaerobic fermentation chamber 20 and formed penetrating the peripheral wall of the case 11, a first gas control valve 22 provided in the first gas passage 23 so as to be able to open and close the first gas passage 23, a second stirring rod 19 fixed to the first rotating shaft 13 so as to be located in the anaerobic fermentation chamber 20, and a heater 21 provided in the peripheral wall of the case 11 so as to surround the anaerobic fermentation chamber 20.

[0014] As shown in Figure 2, the crushing mechanism 50 is configured as a pair, flanking the first rotating shaft 13. As shown in Figure 3, the crushing mechanism 50 includes a cylindrical body (not shown) extending along the axial direction, a connecting block 24 provided on the peripheral wall of the case 11 to hold the cylindrical body, a second rotating shaft 31 extending along the axial direction and partially housed in the cylindrical body, an auger 33 fixed to the outer circumference of the second rotating shaft 31 so as to be housed in the cylindrical body, a second motor 35 provided on the lid to rotate the second rotating shaft 31, and a polishing disc 34 fixed to the outer circumference of the second rotating shaft 31 so as to be located above the cylindrical body. A gap (not shown) is formed between the upper end of the cylindrical body and the lower surface of the polishing disc 34. This gap is formed so that fine solid material crushed by the polishing disc 34, etc., can pass through.

[0015] As shown in Figures 2 and 4, the gas supply mechanism 51 includes a partial pressure chamber 37 formed in the first partition plate so as to communicate with the gas storage chamber 40, a plurality of nozzles 38 that connect the lower part of the aerobic fermentation chamber 29 to the partial pressure chamber 37, and an L-shaped second gas flow path 30 that connects the upper part of the aerobic fermentation chamber 29 to the gas storage chamber 40.

[0016] As shown in Figure 2, the nozzle 38 is configured such that its upper end faces the lower end of the cylindrical body where the polishing plate 34 is not provided. This makes it easier to supply high-pressure gas from the partial pressure chamber 37 to the grinding mechanism 50. On the other hand, the second gas flow path 30 consists of a first sub-gas flow path (not shown in numerals) formed to extend axially and have its lower end in communication with the gas storage chamber 40, and a second sub-gas flow path (not shown in numerals) formed to extend radially and have its upper end in communication with the upper part of the aerobic fermentation chamber 29. The end of the second sub-gas flow path that communicates with the upper part of the aerobic fermentation chamber 29 is located above the connecting block 24.

[0017] Furthermore, as shown in Figures 2, 5 to 7, the waste treatment device includes a second partition plate (not shown in numerals) provided between the anaerobic fermentation chamber 20 and the separation chamber 12, a second liquid flow path 16 passing through the second partition plate, a third liquid control valve 17 provided in the second liquid flow path 16 so as to be able to open and close the second liquid flow path 16, a separation plate 48 fixed to the first rotating shaft 13 so as to divide the separation chamber 12 into an upper separation chamber (not shown in numerals) and a lower separation chamber (not shown in numerals), and a structure formed in the separation plate 48 so as to connect the upper separation chamber and the lower separation chamber. The device further includes a plurality of through holes 47, an extraction mechanism 52 provided in the upper separation chamber to squeeze out liquid material from the processed waste located on the upper surface of the separation plate 48, a scraping mechanism 53 provided in the upper separation chamber to scrape off minute solid material from the processed waste located on the upper surface of the separation plate 48, a discharge hole 15 formed through the peripheral wall of the case 11 to communicate with the upper separation chamber, and a third liquid flow path 14 formed through the peripheral wall of the case 11 to communicate with the lower separation chamber.

[0018] As shown in Figure 2, the upper surface of the separation plate 48 is a tapered surface that slopes downward from the inner circumference to the outer circumference along the radial direction. The discharge hole 15 is configured to slope with the same gradient as the upper surface of the separation plate 48. Specifically, the bottom of the discharge hole 15 is configured to be located on the extension of the upper surface of the separation plate 48. With these configurations, fine solid matter scraped off by the scraping mechanism 53 can easily roll down from the upper surface of the separation plate 48 and enter the discharge hole 15. In addition, a passage (not shown) connected to an external collection unit (not shown) is connected to the discharge hole 15. This allows the fine solid matter discharged from the discharge hole 15 to be collected in the external collection unit. Multiple through holes 49 are configured so that fine solid matter cannot enter. Specifically, the diameter of the through holes 49 is configured to be smaller than the particle size of the fine solid matter. This allows only the liquid matter located in the upper separation chamber to flow down to the lower separation chamber through the through holes 49, thereby ensuring the separation of solid and liquid matter from the treated waste. The third liquid channel 14 is configured such that its bottom is aligned with the bottom of the separation chamber 12. This allows the liquid that has been drained into the lower separation chamber to flow out to the outside via the third liquid channel 14.

[0019] As shown in FIGS. 5 to 7, the squeezing mechanism 52 includes a roller 43 supported in the upper separation chamber so that its outer peripheral surface can press the upper surface of the separation plate 48 by rotating, a third rotating shaft 46 provided parallel to the upper surface of the separation plate 48 and supporting the roller 43, a third motor 45 fixed to the peripheral wall of the case 11 so that one end of the third rotating shaft 46 is connected thereto and the third rotating shaft 46 is rotationally driven, and a support block 42 to which the other end of the third rotating shaft 46 is rotatably supported and fixed to the second partition plate. In plan view, the roller 43 is supported so as to extend along the radial direction.

[0020] As shown in FIGS. 5 to 7, the scraping mechanism 53 has a scraping plate 41 fixed to the case 11 (specifically, the peripheral wall of the case 11) so as to be able to press the upper surface of the separation plate 48. In plan view, the scraping plate 41 is provided so as to extend along the radial direction. As shown in FIG. 6, in the present embodiment, in plan view, the roller 43 and the scraping plate 41 are arranged on the same straight line. The second liquid flow path 16 is located in the first region (specifically, the upper half region of FIG. 6) partitioned by the roller 43 and the scraping plate 41, while the discharge hole 15 is located in the second region (specifically, the lower half region of FIG. 6) partitioned by the roller 43 and the scraping plate 41. Thereby, it is possible to suppress the solid matter among the treated dirt from directly entering the discharge port 15 without passing through the squeezing process.

[0021] As shown in FIG. 2, the dirt treatment apparatus further includes an L-shaped third gas flow path 36 formed in the case 11 so as to communicate the gas storage chamber 40 and the separation chamber 12 (specifically, the upper separation chamber). The third gas flow path 36 includes a third sub-gas flow path (reference numeral omitted) formed so that its upper end communicates with the gas storage chamber 40 and extends along the axial direction, and a fourth sub-gas flow path (reference numeral omitted) formed so that the lower end of the third sub-gas flow path communicates with the upper separation chamber and extends along the radial direction. And the heater 21 is provided adjacent to the third gas flow path 36 (specifically, the third sub-gas flow path).

[0022] As shown in FIG. 5, the sewage treatment device further includes an ultraviolet lamp 44 fixed to the second partition plate so as to face the separation chamber 12 (specifically, the upper separation chamber).

[0023] (Operation of the Sewage Treatment Device) Next, the operation of the sewage treatment device will be described.

[0024] First, in step S1, by controlling the opening and closing of the first liquid control valve 27, a predetermined amount of sewage supplied from the supply source is allowed to enter the aerobic fermentation chamber 29, which is a treatment chamber located on the most upstream side of the treatment process by the sewage treatment device. Then, the first motor 28 can rotate the first stirring rod 25, the second stirring rod 19, and the separation disk 48 simultaneously by rotating the first rotating shaft 13. At the same time, the second motor 35 can rotate the auger 33 and the polishing disk 34 simultaneously by rotating the second rotating shaft 51, sucking the sewage in the aerobic fermentation chamber 29 from the lower end of the cylinder and discharging it from the gap between the upper end of the cylinder and the polishing disk 34. At this time, the solid matter in the sewage is crushed into fine solid matter by the polishing disk 34 or the like. At the same time, in order to ensure sufficient contact between the sewage and the gas (including oxygen), by starting the pump 39, the air outside the case 11 can be taken into the gas storage chamber 40 as high-pressure gas. And a part of the high-pressure gas is sequentially supplied to the lower part of the aerobic fermentation chamber 29 through the pressure dividing chamber 37 and the nozzle 38, so that the oxygen content of the sewage stirred by the first stirring rod 25 can be improved. On the other hand, another part of the high-pressure gas is supplied to the upper part of the aerobic fermentation chamber 29 through the second gas flow path 30, so that the oxygen content of the sewage (specifically, including liquid matter and fine solid matter) discharged by the pulverizing mechanism 50 can be further improved.

[0025] Next, in step S2, the opening and closing of the second liquid control valve 49 is controlled to allow the waste treated in the aerobic fermentation chamber 29 to enter the anaerobic fermentation chamber 20. The heater 21 then raises the temperature of the waste in the anaerobic fermentation chamber 20 to a temperature suitable for anaerobic bacterial growth. Simultaneously, the efficiency of anaerobic fermentation can be improved by rotating the second stirring rod 19. At the same time, by opening the first gas control valve 22, the biogas generated in the anaerobic fermentation chamber 20 can be recovered to the outside of the case 11. After anaerobic fermentation is complete, the heater 21 can further increase the temperature of the waste in the anaerobic fermentation chamber 20 to sterilize the microorganisms in the waste at high temperatures.

[0026] Next, in step S3, by controlling the opening and closing of the third liquid control valve 17, the waste treated in the anaerobic fermentation chamber 20 is allowed to enter the separation chamber 12 (specifically, the upper separation chamber / i.e., the upper surface of the separation plate 48), which is the downstream processing chamber of the waste treatment device. At the same time, the ultraviolet lamp 44 irradiates the upper separation chamber with ultraviolet light, disinfecting and sterilizing the waste treated in the anaerobic fermentation chamber 20, ensuring that harmful pathogenic bacteria in the waste are eliminated. Simultaneously, the third motor 45 rotates the third rotating shaft 46, thereby rotating the roller 43. This presses down on the minute solid matter adhering to the upper surface of the rotating (counterclockwise in this embodiment, as shown in Figure 6) separation plate 48, allowing the water (liquid matter) contained in the minute solid matter to be squeezed out. Simultaneously, the high-pressure gas stored in the gas storage chamber 40 is heated by the heater 21 and supplied to the separation chamber 12 via the third gas flow path 36. This allows the fine solid matter adhering to the upper surface of the separation plate 48 to be dried. As the separation plate 48 rotates further, the moisture is squeezed out, and the dried fine solid matter (i.e., the fine solid matter separated from the waste) can be scraped off by the scraping plate 41. The scraped-off fine solid matter then rolls down along the upper surface of the separation plate 48 and is discharged through the discharge hole 15. At the same time, the treated liquid matter separated from the waste flows down into the lower separation chamber through the multiple through-holes 47 and is discharged through the third liquid flow path 14. As a result, the fine solid matter and liquid matter from the treated waste can be reliably separated.

[0027] Then, after the aerobic fermentation chamber 29, the anaerobic fermentation chamber 20, and the separation chamber 12 are filled with waste, steps S1 to S3 can be carried out simultaneously.

[0028] (Effects of this embodiment) The waste treatment apparatus according to this embodiment comprises a bottomed cylindrical case 11, a separation chamber 12 provided at the lower end of the case to separate solid and liquid matter from livestock farm waste (hereinafter also simply referred to as waste), an aerobic fermentation chamber 29 provided at the upper end of the case 11, an anaerobic fermentation chamber 20 provided in the case 11 so as to be located between the separation chamber 12 and the aerobic fermentation chamber 29, a first rotating shaft 13 extending along the axial direction of the case 11 and penetrating the aerobic fermentation chamber 29, the anaerobic fermentation chamber 20 and the separation chamber 12, a first motor 28 provided on the upper surface of the aerobic fermentation chamber 29 so as to rotate the first rotating shaft 13 around its axial direction, and a first stirring mechanism fixed to the first rotating shaft 13 so as to be located in the aerobic fermentation chamber 29. The anaerobic fermentation chamber 20 is connected to the aerobic fermentation chamber 29 and the separation chamber 12. The anaerobic fermentation chamber 20 is connected to the aerobic fermentation chamber 29 and the separation chamber 12. The anaerobic fermentation chamber 20 is connected to the aerobic fermentation chamber 29 and the separation chamber 12. The anaerobic fermentation chamber 20 is connected to the aerobic fermentation chamber 29 and the separation chamber 12. The anaerobic fermentation chamber 20 is connected to the aerobic fermentation chamber 29 and the separation chamber 12. The anaerobic fermentation chamber 20 is connected to the aerobic fermentation chamber 29 and the separation chamber 12.

[0029] This configuration allows for the integration of an aerobic fermentation chamber 29, an anaerobic fermentation chamber 20, and a separation chamber 12 into a waste treatment device, thereby providing a waste treatment device that can separate solid and liquid matter from waste and remove harmful substances from the waste as much as possible.

[0030] Furthermore, the waste treatment device also includes a gas storage chamber 40 formed in the peripheral wall of the case 11, a pump 39 provided in the gas storage chamber 40, and a gas supply mechanism 51 that supplies the gas (specifically, high-pressure gas) stored in the gas storage chamber 40 to the aerobic fermentation chamber 29 by the pump. As a result, the gas (specifically, high-pressure gas) generated by the pump 39 and stored in the gas storage chamber 40 can be supplied to the aerobic fermentation chamber 29 by the gas supply mechanism 51.

[0031] Furthermore, in addition to the gas supply mechanism 51, the waste treatment device is also equipped with a crushing mechanism 50 located in the aerobic fermentation chamber 29 and fixed to the case 11, which crushes the solid matter in the waste into fine solid matter (i.e., fine particles), thereby enabling sufficient aerobic fermentation of the waste in the aerobic fermentation chamber 29.

[0032] Furthermore, by installing the crushing mechanism 50 in the aerobic fermentation chamber 29 (i.e., the treatment chamber located at the upstream end of the treatment process by the waste treatment device) rather than in the anaerobic fermentation chamber 20, aerobic fermentation of the waste (especially the solid matter in the waste) can be sufficiently carried out in the aerobic fermentation chamber 29 compared to a configuration in which the crushing mechanism 50 is installed in the anaerobic fermentation chamber 20.

[0033] Furthermore, in this embodiment, the waste treatment device further comprises a first partition plate (not shown) provided between an aerobic fermentation chamber 29 and an anaerobic fermentation chamber 20, a first liquid flow path 18 penetrating the first partition plate, a second liquid control valve 49 provided in the first liquid flow path 18 so as to be able to open and close the first liquid flow path 18, a first gas flow path 23 communicating with the outside and the anaerobic fermentation chamber 20 and formed penetrating the peripheral wall of the case 11, a first gas control valve 22 provided in the first gas flow path 23 so as to be able to open and close the first gas flow path 23, a second stirring rod 19 fixed to the first rotating shaft 13 so as to be located in the anaerobic fermentation chamber 20, and a heater 21 provided in the peripheral wall of the case 11 so as to surround the anaerobic fermentation chamber 20.

[0034] With this configuration, by simply fixing the second stirring rod 19 to the first rotating shaft 13 to which the first stirring rod 25 is fixed and rotating the first rotating shaft 13, the aerial fermentation chamber 29's waste can be stirred simultaneously by the first stirring rod 25 and the anaerobic fermentation chamber 20's waste can be stirred by the second stirring rod 19. This simplifies the drive mechanism (first motor 28) for driving both stirring rods.

[0035] Furthermore, the waste treatment device is further equipped with a heater 21 installed on the peripheral wall of the case 11 so as to surround the anaerobic fermentation chamber 20, thereby raising the temperature inside the anaerobic fermentation chamber 20 to a temperature suitable for the proliferation of anaerobic bacteria. As a result, the efficiency of anaerobic fermentation of waste in the anaerobic fermentation chamber 20 can be improved.

[0036] Furthermore, the waste treatment device is equipped with a first gas flow path 23 that communicates with the outside and the anaerobic fermentation chamber 20 and penetrates the peripheral wall of the case 11, and a first gas control valve 22 provided in the first gas flow path 23 so as to be able to open and close the first gas flow path 23. By opening the first gas control valve 22, the biogas generated in the anaerobic fermentation chamber 20 can be recovered to the outside of the case 11.

[0037] Furthermore, in this embodiment, the gas supply mechanism 51 includes a partial pressure chamber 37 formed in the first partition plate so as to communicate with the gas storage chamber 40, a plurality of nozzles 38 that connect the lower part of the aerobic fermentation chamber 29 to the partial pressure chamber 37, and a second gas flow path 30 that connects the upper part of the aerobic fermentation chamber 29 to the gas storage chamber 40.

[0038] With this configuration, a portion of the high-pressure gas stored in the gas storage chamber 40 is supplied to the lower part of the aerobic fermentation chamber 29 via the partial pressure chamber 37 and nozzle 38, thereby improving the oxygen content of the waste stirred by the first stirring rod 25. Meanwhile, another portion of the high-pressure gas is supplied to the upper part of the aerobic fermentation chamber 29 through the second gas flow path 30, further improving the oxygen content of the waste (specifically, including liquids and fine solids) discharged by the crushing mechanism 50. As a result, the efficiency of aerobic fermentation of the waste in the aerobic fermentation chamber 29 can be improved.

[0039] Furthermore, in this embodiment, the waste treatment device includes a second partition plate (not shown in reference numerals) provided between the anaerobic fermentation chamber 20 and the separation chamber 12, a second liquid flow path 16 passing through the second partition plate, a third liquid control valve 17 provided in the second liquid flow path 16 so as to be able to open and close the second liquid flow path 16, a separation plate 48 fixed to the first rotating shaft 13 so as to divide the separation chamber 12 into an upper separation chamber (not shown in reference numerals) and a lower separation chamber (not shown in reference numerals), and a plurality of separators formed on the separation plate 48 so as to connect the upper separation chamber and the lower separation chamber. The device further includes a through hole 47, an extraction mechanism 52 provided in the upper separation chamber to squeeze out liquid material from the processed waste located on the upper surface of the separation plate 48, a scraping mechanism 53 provided in the upper separation chamber to scrape off minute solid material from the processed waste located on the upper surface of the separation plate 48, a discharge hole 15 formed through the peripheral wall of the case 11 to communicate with the upper separation chamber, and a third liquid flow path 14 formed through the peripheral wall of the case 11 to communicate with the lower separation chamber.

[0040] Furthermore, in this embodiment, the extraction mechanism 52 has a roller 43 supported in the upper separation chamber so that its outer circumferential surface can press against the upper surface of the separation plate 48 when it rotates.

[0041] Furthermore, in this embodiment, the scraping mechanism 53 has a scraping plate 41 fixed to the case 11 so as to be able to press against the upper surface of the separation plate 48.

[0042] With these configurations, by simply fixing the separation disc 48 to the first rotating shaft 13 to which the first stirring rod 25 and the second stirring rod 19 are fixed and rotating the first rotating shaft 13, the agitation of the waste in the aerobic fermentation chamber 29 by the first stirring rod 25, the agitation of the waste in the anaerobic fermentation chamber 20 by the second stirring rod 19, and the rotation of the separation disc 48 can be performed simultaneously. This simplifies the drive mechanism for driving both stirring rods and the separation disc 48.

[0043] Furthermore, the waste treatment device is equipped with an extraction mechanism 52 located in the upper separation chamber to extract liquid matter from the treated waste located on the upper surface of the separation disc 48, and a scraping mechanism 53 located in the upper separation chamber to scrape off minute solid matter from the treated waste located on the upper surface of the separation disc 48. As a result, by pressing the minute solid matter adhering to the upper surface of the rotating separation disc 48 with the extraction mechanism 52 (specifically, the extraction mechanism 52), the water (liquid matter) contained in the minute solid matter can be extracted. Additionally, as the separation disc 48 rotates further, the minute solid matter from which the water has been extracted and dried (i.e., minute solid matter separated from the waste) can be scraped off by the scraping mechanism 53 (specifically, the scraping plate 41).

[0044] Furthermore, the waste treatment device is further equipped with multiple through-holes 47 formed in the separation plate 48 so as to connect the upper separation chamber and the lower separation chamber, allowing moisture (liquid matter) squeezed out from the minute solid matter to flow down into the lower separation chamber through the multiple through-holes 47. As a result, minute solid matter and liquid matter can be reliably separated from the treated waste.

[0045] Furthermore, in this embodiment, the waste treatment device is further equipped with an L-shaped third gas flow path 36 formed in the case 11 so as to connect the gas storage chamber 40 and the separation chamber 12 (specifically, the upper separation chamber), and the heater 21 is provided adjacent to the third gas flow path 36.

[0046] In this configuration, the high-pressure gas stored in the gas storage chamber 40 is heated by the heater 21 (specifically, the residual heat of the heater 21) and supplied to the separation chamber 12 via the third gas flow path 36. This allows for the drying of fine solid matter adhering to the upper surface of the separation plate 48.

[0047] Furthermore, in this embodiment, the waste treatment device further includes an ultraviolet lamp 44 fixed to the second partition plate so as to face the separation chamber 12.

[0048] With this configuration, the ultraviolet lamp 44 irradiates the upper separation chamber with ultraviolet light, thereby disinfecting and sterilizing the waste treated in the anaerobic fermentation chamber 20, and ensuring that harmful pathogenic bacteria in the waste are eliminated.

[0049] Furthermore, in this embodiment, the crushing mechanism 50 includes a cylindrical body (not shown in reference numerals) extending along the axial direction, a connecting block 24 provided on the peripheral wall of the case 11 to hold the cylindrical body, a second rotating shaft 31 partially housed in the cylindrical body so as to extend along the axial direction, an auger 33 fixed to the outer circumference of the second rotating shaft 31 so as to be housed in the cylindrical body, a second motor 35 provided on the lid to rotate the second rotating shaft 31, and a polishing disc 34 fixed to the outer circumference of the second rotating shaft 31 so as to be located above the cylindrical body. A gap is formed between the upper end of the cylindrical body and the lower surface of the polishing disc 34.

[0050] With this configuration, the second motor 35 rotates the second rotating shaft 51, thereby simultaneously rotating the auger 33 and the polishing plate 34, allowing waste from the aerobic fermentation chamber 29 to be sucked in from the lower end of the cylindrical body and discharged from the gap between the upper end of the cylindrical body and the polishing plate 34. At this time, solid matter in the waste can be crushed into fine solid particles by the polishing plate 34, etc.

[0051] Although this embodiment has been described above, the above-described embodiment only illustrates a part of the application of the present invention, and is not intended to limit the technical scope of the present invention to the specific configurations of the above-described embodiment. [Explanation of Symbols]

[0052] 11 cases 12 Separation room 13. First axis of rotation 20 Anaerobic Fermentation Chamber 24 Grinding mechanism 25 1st stirring bar 26 Supply channel 28 First Motor 29 Aerobic Fermentation Chamber 39 pumps 40 Gas Storage Room 51 Gas supply mechanism

Claims

1. A cylindrical case with a bottom, A separation chamber is provided at the lower end of the case to separate solid and liquid materials from the waste, An aerobic fermentation chamber provided on the upper end side of the aforementioned case, An anaerobic fermentation chamber is provided in the case so as to be located between the separation chamber and the aerobic fermentation chamber, A first rotating shaft is provided that extends along the axial direction of the case and penetrates the aerobic fermentation chamber, the anaerobic fermentation chamber, and the separation chamber, A first motor is provided on the upper surface of the aerobic fermentation chamber so as to rotate the first rotating shaft around the axial direction, A first stirring rod fixed to the first rotating shaft so as to be located in the aerobic fermentation chamber, A lid that covers the upper end of the case as an open end, A supply channel is formed in the lid so as to penetrate the lid, through which waste is supplied, A first liquid control valve is provided in the supply channel so as to be able to open and close the supply channel, A crushing mechanism is located in the aerobic fermentation chamber and is fixed to the case to crush solid matter in the waste into fine solid matter, A gas storage chamber formed in the peripheral wall of the aforementioned case, A pump installed in the aforementioned gas storage chamber, The system includes a gas supply mechanism that supplies the gas stored in the gas storage chamber to the aerobic fermentation chamber using the pump, The anaerobic fermentation chamber is in communication with the aerobic fermentation chamber and the separation chamber. Waste disposal device.

2. A first partition plate is provided between the aerobic fermentation chamber and the anaerobic fermentation chamber, A first liquid channel that penetrates the first partition, A second liquid control valve is provided in the first liquid flow path so as to be able to open and close the first liquid flow path, A first gas flow path is formed that connects the outside to the anaerobic fermentation chamber and penetrates the peripheral wall of the case, A first gas control valve provided in the first gas flow path, A second stirring rod is fixed to the first rotating shaft so as to be located in the anaerobic fermentation chamber, The apparatus further comprises a heater provided on the peripheral wall of the case so as to surround the anaerobic fermentation chamber, The waste treatment apparatus according to claim 1.

3. The aforementioned gas supply mechanism is, A partial pressure chamber formed in the first partition plate so as to communicate with the gas storage chamber, Multiple nozzles connecting the lower part of the aerobic fermentation chamber and the partial pressure chamber, It has a second gas flow path connecting the upper part of the aerobic fermentation chamber and the gas storage chamber, The waste treatment apparatus according to claim 2.

4. A second partition plate is provided between the anaerobic fermentation chamber and the separation chamber, A second liquid channel that penetrates the second partition, A third liquid control valve is provided in the second liquid passage so as to be able to open and close the second liquid passage, A separation plate fixed to the first rotating shaft divides the separation chamber into an upper separation chamber and a lower separation chamber, Multiple through holes are formed in the separation plate so as to connect the upper separation chamber and the lower separation chamber, The extraction mechanism provided in the upper separation chamber is for squeezing out liquid material from the processed waste located on the upper surface of the separation plate, A scraping mechanism is provided in the upper separation chamber to scrape off minute solid particles from the processed waste located on the upper surface of the separation plate, A discharge hole formed through the peripheral wall of the case so as to communicate with the upper separation chamber, The system further comprises a third liquid channel formed through the peripheral wall of the case so as to communicate with the lower separation chamber, The waste treatment apparatus according to claim 2.

5. The extraction mechanism has a roller supported in the upper separation chamber so that its outer surface can press against the upper surface of the separation plate when it rotates. The waste treatment apparatus according to claim 4.

6. The scraping mechanism has a scraping plate fixed to the case so as to be able to press against the upper surface of the separation plate. The waste treatment apparatus according to claim 4.

7. The case further comprises a third gas flow path formed in the case to connect the gas storage chamber and the separation chamber, The heater is provided adjacent to the third gas flow path. The waste treatment apparatus according to claim 4.

8. The system further includes an ultraviolet lamp fixed to the second partition so as to face the separation chamber. The waste treatment apparatus according to claim 7.

9. The aforementioned grinding mechanism is A cylindrical body extending along the axial direction, A second rotating shaft, partly housed in the cylindrical body so as to extend along the axial direction, An auger fixed to the outer circumference of the second rotating shaft so as to be housed in the cylindrical body, A second motor is provided on the lid to rotate the second rotating shaft, The system includes a polishing plate fixed to the outer circumference of the second rotating shaft so as to be located above the cylindrical body, A gap is formed between the upper end of the cylindrical body and the lower surface of the polishing plate. The waste treatment apparatus according to claim 1.

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