Sludge treatment facility

Abstract

To provide a sludge treatment facility capable of treating sludge and producing compost. [Solution] The sludge treatment facility comprises a storage section (202) for storing the raw sludge, a mixing section (310) for mixing microorganisms with the sludge transported from the storage section to produce a microbial mixed raw material, a fermentation section (320) for fermenting the microbial mixed raw material transported from the mixing section (310), a granulation section (340) for forming the fermented microbial mixed raw material into pellets, and a deodorization section for removing odors generated from the storage section (202), the mixing section (310) and the fermentation section (320).

Description

[Technical field]

[0001] The present invention relates to a sludge treatment facility. [Background technology]

[0002] Patent Document 1 describes an organic sludge treatment system and an organic sludge treatment facility. This organic sludge treatment facility has a crushing and mixing section that mixes powder on which microorganisms are attached at a predetermined ratio with the organic sludge brought in and crushes it to a required particle size, a primary storage section that stores and cures the organic sludge after crushing and mixing while turning it over and processing it, and a fermentation treatment section that stores the organic sludge after processing in the primary storage section and ferments the organic sludge while supplying air, and the fermentation treatment section includes a plurality of sealed chamber devices attached to the same, and the sealed chamber device has a sealed chamber where the organic sludge is input and left to stand, and a heated air injection section that injects heated air into the organic sludge input in the sealed chamber. The system is characterized in that the system has a pipe, a suction and discharge section which sucks in and discharges air containing steam generated by microbial fermentation of organic sludge, and a deodorization section which deodorizes the sucked in gas, and within one site, a crushing and mixing section and a primary storage section are arranged in opposing positions with a central transport space in between as pre-treatment sections, and multiple sealed treatment chambers of the fermentation treatment section are arranged adjacent to the crushing and mixing section and the primary storage section, respectively, and are arranged in opposing positions with a central transport space in between, and there are eight or more sealed chambers, each with a volume at least twice the daily amount of organic sludge brought in. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4415273 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a sludge treatment facility capable of treating sludge and producing compost. [Means for solving the problem]

[0005] The invention described in claim 1 is The building is built on the ground and has several holes arranged in a staggered pattern, each filled with binchotan charcoal mixed with water. Storage area for storing sludge as raw material A storage building equipped with and, A building that is located on the opposite side of the road from the storage building, has entrances at both ends, and has an internal passageway extending from one entrance to the other entrance through which a wheel loader can travel; A mixing device for mixing microorganisms with the sludge transported from the storage unit to generate a microbial mixed raw material. At least ten fermentation units are arranged opposite each other across the passage. The microbial mixture material conveyed from the mixing section 7 to 10 days Fermentation Generate compost Fermentation to a sorting section having a trommel into which the compost produced in the fermentation section is input and which sorts the compost into pelletizable compost and other compost; The pelletizing section forms the mixture into pellets. and a deodorizing section for removing odors generated from the storage section, the mixing section, and the fermentation section; A processing building equipped with And equipped with The fermentation section has a floor surface for receiving the microorganism-mixed raw material, side walls surrounding the floor surface, a roof covering the upper part of the floor surface, and a door that opens and closes in the vertical direction, and a part of the side walls, the roof, and the door are each made of reinforced glass, light is taken into the inside of the fermentation section, a peak is formed on the roof, and an exhaust port for discharging the generated odor to the deodorization section is provided on the inside of the peak, and the microorganism-mixed raw material is transported to the fermentation section from the door by the wheel loader. It is a sludge treatment facility.

[0006] The invention described in claim 2 is a sludge treatment facility comprising: a storage section for storing sludge as a raw material; a mixing section for mixing microorganisms with the sludge transported from the storage section to produce a microbial mixed raw material; at least 10 fermentation sections arranged opposite each other across an aisle along which a wheel loader can travel, the fermentation section for fermenting the microbial mixed raw material transported from the mixing section by the wheel loader over a period of 7 to 10 days to produce compost; a sorting section having a trommel into which the compost produced in the fermentation section is input and which sorts the compost into pelletizable compost from other compost; a granulation section for forming the compost sorted in the sorting section into pellets; and a deodorization section for removing odors generated from the fermentation section, wherein the fermentation section has a floor that receives the microbial mixed raw material, side walls that surround the floor, a roof that covers the upper part of the floor and has a top, and a door that opens and closes in the vertical direction, and the material of some of the side walls, the roof, and the door are each reinforced glass, and light is introduced into the interior of the fermentation section.

[0007] The invention described in claim 3 is A sludge treatment facility comprising: a storage section for storing sludge as a raw material; a mixing section for mixing microorganisms with the sludge transported from the storage section to produce a microbial mixed raw material; at least 10 fermentation sections arranged opposite each other across an aisle, the fermentation section fermenting the microbial mixed raw material transported from the mixing section for 7 to 10 days to produce compost; a sorting section into which the compost produced in the fermentation section is input and which sorts the compost into compost that can be pelletized from other compost; a granulation section for forming the compost sorted in the sorting section into pellets; and a deodorization section for removing odors generated from the fermentation section, wherein the fermentation section has a floor that receives the microbial mixed raw material, side walls that surround the floor, a roof that covers the upper part of the floor, and a door that opens and closes in the vertical direction, and the material of some of the side walls, the roof, and the door are each reinforced glass, and light is introduced into the interior of the fermentation section.

[0008]

[0009]

[0010] Effect of the Invention

[0011] According to the present invention, a sludge treatment facility capable of treating sludge and producing compost can be provided. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is a layout diagram of each part of a sludge treatment facility according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram showing the fermentation section of the sludge treatment facility, where (A) is an explanatory diagram showing the left side cross section, and (B) is an explanatory diagram showing the cross section as seen from the front (aisle side). [Diagram 3] FIG. 2 is an explanatory diagram showing the sludge treatment process in the sludge treatment facility. [Figure 4]1(A) to (D) are explanatory diagrams showing the fermentation process in the sludge treatment facility. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Next, embodiments of the present invention will be described with reference to the attached drawings to facilitate understanding of the present invention. Note that parts not relevant to the description may be omitted from the drawings.

[0014] As shown in FIG. 1, a sludge treatment facility 10 according to one embodiment of the present invention comprises a storage building 20, a treatment building 30, and a microbial culture building 50, and is capable of producing compost by fermenting sludge, which is organic waste discharged from a sewage treatment plant.

[0015] The storage building 20 is a roofed building, and inside is provided a storage section 202 that serves as a stockyard for storing sludge as a raw material. The storage building 20 is provided with an entrance and exit through which a wheel loader that transports the sludge can pass. A number of holes 203 are arranged in a staggered pattern at intervals on the ground beneath the concrete foundation of the storage building 20. The depth of each hole 203 is, for example, 1.5 to 2.5 m, and binchotan charcoal kneaded with water is buried in these holes 203. The action of the binchotan charcoal suppresses odors generated from the sludge stored in the storage building 20. Adjacent to the storage building 20 is a compost warehouse 204 for storing the produced compost in pellet form.

[0016] The treatment building 30 is a building for fermenting sludge to produce compost, and is located on the opposite side of the storage building 20 across the access road that runs through the site of the sludge treatment facility 10. The processing building 30 is a roofed building that extends in one direction and has entrances 302a, 302b at both ends, as well as a passageway extending from one entrance 302a to the other entrance 302b, so that a wheel loader can travel along the passageway. A partition 306 with an entrance (opening) 304 through which a wheel loader can pass is provided near the entrance 302b, and the interior of the treatment building 30 is broadly divided into a first space S1 where the sludge is actually treated, and a second space S2 which is the other space.

[0017] Inside the treatment building 30, a mixing section 310, a fermentation section 320, a sorting section 330, a granulation section 340, and a deodorization section are provided. The mixing section 310 has an agitator 312 and can mix the sludge transported from the storage section 202 with a fermentation promoter to produce a microbial mixed raw material. The fermentation promoter herein includes powdered aerobic microorganisms, cow dung, chicken manure and wood chips. The powdered aerobic microorganisms are stored in a microorganism storage section 314 located adjacent to the mixing section 310 . Wood chips are stored in chip reservoir 316 located between microorganism reservoir 314 and fermentation reservoir 320 .

[0018] The fermentation section 320 can ferment the microorganism-mixed raw material transported from the mixing section 310 to produce compost. A plurality of fermentation sections 320 are provided facing each other across an aisle, and the number of the fermentation sections is at least 10. As shown in FIGS. 2(A) and 2(B), the fermentation section 320 has a punching metal 323, a side wall 324a (see FIG. 1), side walls 324b to 324d, a roof 325, and a door 326.

[0019] The punched metal 323 constitutes a floor surface and can receive the microorganism-mixed raw material. The punched metal 323 has a rectangular shape in a plan view. An air supply pipe 328 extends below the punched metal 323, from which hot air at a predetermined temperature generated by a hot air generator 327 (see Figs. 4(A) to 4(D)) is discharged. The hot air is supplied through holes formed in the punched metal 323, thereby promoting fermentation of the microorganism mixed raw material.

[0020] Side wall 324a (see FIG. 1), side wall 324b (see FIG. 2(A)), side wall 324c and side wall 324d (see FIG. 2(B)) respectively constitute the front, rear, left side and right side walls when looking at fermentation section 320 from the aisle side, and are attached to aluminum frame 321 so as to surround punched metal 323. The side walls 324a, 324c, and 324d are made of, for example, tempered glass, and the side wall 324b is made of, for example, aluminum.

[0021] The roof 325 covers the upper part of the punched metal 323, and has a top part Ap in the center when the fermentation section 320 is viewed from the aisle side, as shown in FIG. 2(B). An exhaust port 329 is provided on the inside of the top portion Ap for discharging odors generated in the fermentation section 320 to the deodorization section. The material of the roof 325 is tempered glass.

[0022] The door 326 can close the loading / unloading opening formed in the side wall 324a on the front side, and can be opened and closed in the vertical direction. The material of the door 326 is, for example, tempered glass.

[0023] In this way, the side walls 324a, 324c, 324d, roof 325 and door 326 are each made of a material such as tempered glass, which makes them less susceptible to corrosion and improves their durability. In addition, light from inside the treatment building 30 is able to reach the inside of the fermentation section 320, improving the workability of workers. The side walls 324a, 324c, and 324d are not limited to being made of tempered glass, and some of the side walls may be made of tempered glass.

[0024] Fermentation section 320 has an internal space formed by punching metal 323, side walls 324a to 324d, roof 325, and door 326, and is configured so that odors are discharged from exhaust port 329 to prevent odors from leaking out to the outside.

[0025] The sorting section 330 (see FIG. 1) has a trommel (not shown), into which the compost produced in the fermentation section 320 is input, and compost of a predetermined size is sorted out. The trommel is installed close to the mixing section 310 so as to penetrate the partition 306, and separates the compost fed from the first space S1 side into compost that can be pelletized and the rest. The compost to be pelletized is discharged to the first space S1 side, and the rest is discharged to the second space S2 side.

[0026] The pelletizing section 340 has a pellet machine 342 and can mold the compost sorted by the sorting section 330 into, for example, cylindrical pellets.

[0027] The deodorizing section has a scrubber 352 (see FIGS. 4(A) to 4(D)), and can remove odors generated from the storage section 202, the mixing section 310, and the fermentation section 320, as shown in FIG. The scrubbers 352 are installed in machine rooms S3a, S3b (see FIG. 1) formed on the rear side of each fermentation section 320. The machine rooms S3a, S3b are each located inside the outer wall of the treatment building 30 and formed to extend along the longitudinal direction. The scrubber 352 is a wet scrubber.

[0028] The microbial culture building 50 is a building in which a microbial culture device (see FIG. 3) is installed for producing powdered aerobic microorganisms necessary for the fermentation treatment of sludge. The aerobic microorganisms are prepared by, for example, spraying a liquid in which primary bacterial cells obtained by culturing bacteria have been attached onto heat-sterilized zeolite, vermiculite, sawdust, or the like. The cultured aerobic microorganisms are transferred to the microorganism storage section 314 .

[0029] An office 60 is provided adjacent to the microorganism culture building 50. In the office 60, the temperature, humidity and odor intensity of the microorganism mixed material being fermented in the fermentation section 320 are monitored.

[0030] Next, the treatment process in the sludge treatment facility 10 will be described with reference to FIG. The treatment process includes the following steps P1 to P5.

[0031] (Process P1) Sludge discharged from a sewage treatment plant is loaded onto a truck and brought in. The truck enters from the entrance / exit road and stops at a truck scale 102 (see FIG. 1) installed on the entrance / exit road. The sludge to be treated is weighed by the truck scale 102 installed on the entrance / exit road. The sludge is then transported by a wheel loader from the truck to storage section 202 of storage building 20, where it is temporarily stored together with livestock manure such as chicken manure and cow manure.

[0032] (Process P2) Sludge is transported by a wheel loader from the storage section 202, and a fermentation promoter is transported from the microorganism storage section 314 to the mixing section 310 of the treatment building 30. In the mixing section 310, the fermentation promoter is added to the sludge, and then the mixture is stirred by a mixer 312 to produce a microorganism mixed raw material.

[0033] (Process P3) A door 326 (see FIG. 2(A)) of the fermentation section 320 is opened upward, and the produced microorganism-mixed raw material is transported by a wheel loader through the open door 326 to the fermentation section 320. Fermentation of the microorganism-mixed raw material stored in the fermentation section 320 is promoted by the action of hot air of, for example, 40° C. generated from a hot air generator 327. In the fermentation process, gas containing methane gas etc. generated from the microorganism mixed raw material is treated in the scrubber 352 of the deodorizing section together with the odorous gas generated from the storage section 202 and the mixing section 310, and is released into the atmosphere after the odor is removed. Note that the moisture that has taken in the gas components inside the scrubber 352 is discharged into a septic tank (not shown) as water with a concentration of 20 ppm.

[0034] (Process P4) The fermented microorganism-mixed raw material is transported by a wheel loader to the pelletizing section 340. The transported microorganism-mixed raw material is formed into pellets as compost.

[0035] (Process P5) The compost pellets are then bagged and shipped.

[0036] Next, the fermentation process in the fermentation section 320 will be described with reference to Figs. 4(A) to 4(D). First, as the treatment on the first day, as shown in FIG. 4(A), the microorganism-mixed raw material is carried into the fermentation section 320, and hot air generated by the hot air generator 327 is supplied inside.

[0037] Next, as the treatment on the second to sixth days, as shown in Fig. 4(B) and Fig. 4(C), the microorganism-mixed raw material is left in a state where hot air is supplied to the raw material inside the fermentation section 320. As a result, the fermentation of the microbial mixed raw material proceeds and its volume gradually decreases. Gases produced during the fermentation process are treated in a scrubber 352 .

[0038] Finally, as the treatment on the 7th to 10th days, as shown in FIG. 4(D), the microorganism mixed raw material is left standing with hot air being further supplied thereto. The fermented microbial mixed material eventually reduces in volume to 1 / 3 to 1 / 5 of its original size and becomes compost.

[0039] In this way, it takes 7 to 10 days for the fermentation process in the fermentation unit 320. As described above, by providing at least 10 fermentation units 320, the sludge can be treated efficiently in sequence.

[0040] As described above, the sludge treatment facility 10 can treat sludge as a raw material to produce compost.

[0041] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and all changes in conditions that do not depart from the gist of the present invention are within the scope of application of the present invention. [Explanation of symbols]

[0042] 10 Sludge treatment facility 20 Storage Building 30 Processing Building 50 Microbial culture building 60 Office 102 Truck scale 202 Storage 203 holes 204 Compost warehouse 302a, 302b entrance / exit 304 Entrance / Exit 310 Mixing section 312 Mixer 314 Microbial Storage Unit 316 Chip storage unit 320 Fermentation Department 321 Frames 323 Punching Metal 324a~324d side wall 325 Roof 326 Door 327 Hot Air Generator 328 Air supply pipe 329 Exhaust port 330 Sorting Department 340 Granulation Section 342 Pellet Machine 352 Scrubber S1 First Space S2 The Second Space S3a, S3b Machine room

Claims

1. A building constructed on the ground with a number of holes arranged in a staggered pattern, each filled with binchotan charcoal kneaded with water, the building having a storage section for storing the raw sludge, a mixing section for mixing sludge transported from the storage section with microorganisms to produce a microbial-mixed raw material; at least ten fermentation sections arranged opposite each other across the passageway for fermenting the microbial-mixed raw material transported from the mixing section for 7 to 10 days to produce compost; a sorting section having a trommel into which the compost produced in the fermentation section is input and which separates the compost produced in the fermentation section into compost that can be pelletized and other compost; a granulation section for forming the compost sorted in the sorting section into pellets; and a treatment building provided with a deodorizing section for removing odors generated from the storage section, the mixing section, and the fermentation section, The fermentation section has a floor surface for receiving the microbial mixture raw material; A side wall surrounding the floor surface; A roof covering the upper part of the floor surface; A door that opens and closes in the vertical direction, The material of a part of the side walls, the roof and the door is reinforced glass, so that light is taken into the inside of the fermentation section, The roof has a peak, and an exhaust port is provided on the inside of the peak for discharging the generated odor to the deodorizing section, A sludge treatment facility in which the microorganism mixed raw material is transported to the fermentation section through the door by the wheel loader.

2. A storage section for storing sludge as a raw material; A mixing section for mixing microorganisms with the sludge transported from the storage section to generate a microbial mixed raw material; At least 10 fermentation units are arranged to face each other across a passageway through which a wheel loader can travel, and the fermentation units ferment the microbial mixed raw material transported from the mixing unit by the wheel loader for 7 to 10 days to produce compost; A sorting section having a trommel into which the compost produced in the fermentation section is input and which sorts the compost into pelletizable compost and other compost; A pelletizing unit that forms the compost sorted by the sorting unit into pellets; A sludge treatment facility comprising: a deodorizing section for removing odors generated from the fermentation section; The fermentation section has a floor surface for receiving the microbial mixture raw material; A side wall surrounding the floor surface; a roof covering the floor surface and having a top; A door that opens and closes in the vertical direction, A sludge treatment facility in which a portion of the side walls, the roof, and the door are made of reinforced glass, allowing light to be introduced into the fermentation section.

3. A storage section for storing sludge as a raw material; A mixing section for mixing microorganisms with the sludge transported from the storage section to generate a microbial mixed raw material; At least 10 fermentation units arranged to face each other across an aisle, the fermentation units fermenting the microbial mixed raw material transported from the mixing unit for 7 to 10 days to produce compost; A sorting section into which the compost produced in the fermentation section is input and which sorts the compost into pelletizable compost and other compost; A pelletizing unit that forms the compost sorted by the sorting unit into pellets; A sludge treatment facility comprising: a deodorizing section for removing odors generated from the fermentation section; The fermentation section has a floor surface for receiving the microbial mixture raw material; A side wall surrounding the floor surface; A roof covering the upper part of the floor surface; A door that opens and closes in the vertical direction, A sludge treatment facility in which a portion of the side walls, the roof, and the door are made of reinforced glass, allowing light to be introduced into the fermentation section.

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