JP5649697B1 - Urban waste recycling plant - Google Patents

Abstract

To provide a municipal waste recycling plant capable of drying and deodorizing a relatively large amount of waste with a relatively simple configuration and easily increasing its size. A municipal waste recycling plant includes a pretreatment line, a wood material production line, a mixing line, a fermentation drying line, a sorting line, a polyvinyl chloride removal line, and an RPF production line. 8 is provided. The biotunnel fermentation drying line 5 includes a plurality of fermentation buildings 43, 43,... And a deodorization building 44. While spraying the water of the water storage room 154 to the waste put into the fermentation room 155 of the fermentation building 43, the air of the fermentation room 155 is circulated to the water storage room 154 by the blower 158. The air in the fermentation chamber 155 of the fermentation building 43 is guided to the water storage chamber 165 of the deodorization building 44 by the blower 170 and passed through the three wood chip layers P1, P2, P3 installed in the deodorization chamber 166 of the deodorization building 44 to remove the deodorization. Do. [Selection] Figure 11

Description

  The present invention relates to a municipal waste recycling plant that recycles waste discharged from homes, business establishments, etc. to produce, for example, solid fuel or compost.

  Conventionally, many attempts have been made to recycle solid fuel, fertilizer, and the like using waste discharged from households and business establishments. In the recycling of waste, it is necessary to dry waste with a high water content such as raw garbage and sludge. Conventionally, a drying kiln such as a rotary kiln is often used to dry the waste.

  However, since the drying furnace uses the heat of combustion of fossil fuel, a large amount of fuel is required, and there is a problem of generation of carbon dioxide, nitrogen oxides and the like accompanying the combustion of fossil fuel. Moreover, since the air which dried the waste in the drying furnace contains the dust and odor which arose from the waste, it is necessary to install a dust collector and a deodorizing apparatus, and there exists a problem that apparatus cost increases.

  In order to solve these problems, the applicant has proposed a recycling plant equipped with a reduced pressure drying device that dries waste with a high water content in a reduced pressure environment (see Patent Document 1). The reduced-pressure drying apparatus of this recycling plant puts waste to which fermentation bacteria have been added into a reduced-pressure chamber whose pressure is reduced from atmospheric pressure, and heats the waste with a heating jacket installed around the reduced-pressure chamber, Stir with a stirrer installed in a vacuum chamber. The water vapor generated from the waste is condensed in a condenser installed in the decompression chamber, and this condensate and the air in the decompression chamber are mixed with the refrigerant water in the condenser and guided to the cooling tower. The bacteria bed installed in the cooling tower Odor is reduced by the action of the fermentative bacteria.

  In this recycling plant, waste plastic, waste paper, and wood chips are mixed with the waste dried by the vacuum drying apparatus, and the mixed material is formed into pellets to produce a solid fuel. Steam is generated in a boiler that uses part of the solid fuel and part of the wood chips that are the material of the solid fuel, and the steam is supplied to the heating jacket of the vacuum dryer to dry the waste. Yes.

JP 2011-105816 A

  However, the reduced-pressure drying apparatus of the recycling plant has a problem that the apparatus configuration is complicated and the apparatus cost is high because the apparatus includes a decompression chamber provided with a stirrer, a heating jacket and a condenser, and a cooling tower. Moreover, since the processing capacity of the vacuum drying apparatus is limited by the capacity of the vacuum chamber, it is difficult to process a large amount of waste and it is difficult to increase the size of the recycling plant.

  In addition, the recycling plant uses a solid fuel as a product and a part of wood chips as a material of the solid fuel as boiler fuel in order to dry waste with a high water content with a vacuum dryer. There is a problem of lowering the production efficiency of the product.

  Accordingly, an object of the present invention is to provide a recycling plant that can dry and deodorize a relatively large amount of waste with a relatively simple configuration and can easily be enlarged. Another object of the present invention is to provide a recycling plant that can increase the production efficiency of solid fuels made of waste and wood materials as compared with conventional ones.

In order to solve the above problems, the municipal waste recycling plant of the present invention includes a pretreatment facility that separates waste into combustible and incombustible materials,
Mixing the combustible material separated by the pretreatment facility with a wood material and a return fermented product obtained by returning a part of the material to be treated that has undergone the fermentation and drying process to form a mixed waste Equipment,
A fermentation drying facility having a fermentation unit that heats and drys the mixed waste formed by the mixing facility by aerobic fermentation, and a deodorization unit that deodorizes the air in the fermentation unit by aerobic fermentation. It is characterized by.

  According to the said structure, a waste material is separated into a combustible material and an incombustible material by a pre-processing facility, and a wood material and a return fermented material are mixed with the said combustible material by a mixing facility, and mixed waste material is formed. The return fermented product is a product obtained by returning a part of the processed product that has been subjected to the fermentation drying process in a later step, and aims to add the fermenting bacteria to the combustible material. The aerobic fermentation of the above mixed waste is performed in the fermentation unit by the fermentation drying facility, and the air in the fermentation unit is deodorized by the aerobic fermentation in the deodorizing unit while drying with the heat accompanying the fermentation. Since the fermentation drying equipment has a fermentation unit and a deodorizing unit and can set a high processing capacity, it can process a relatively large amount of waste. Therefore, the municipal waste recycling plant having the above configuration can be easily enlarged. In addition, because the fermentation drying equipment dries the waste with the heat accompanying the fermentation of the waste, it is necessary to obtain the heat for drying the waste by burning the solid fuel produced using the treated waste There is no. Therefore, for example, when producing solid fuel by a municipal waste recycling plant, the production efficiency of the product can be increased. In addition, the mixing equipment mixes the wood material and the back fermented material with the combustible material separated by the pretreatment equipment to form mixed waste, so that the mixed waste can be fermented quickly and effectively in the fermentation drying equipment. Drying can be promoted.

In one embodiment of the municipal waste recycling plant, the deodorization unit of the fermentation drying equipment generates condensed water when deodorizing the air in the fermentation unit,
The said mixing equipment is supplied with the condensed water produced | generated by the deodorizing unit of the said fermentation drying equipment, The said condensed water supplied is added to mixed waste, and it adjusts to a predetermined moisture content.

  According to the said embodiment, when deodorizing the air in a fermentation unit with the deodorizing unit of fermentation drying equipment, condensed water is produced | generated and this condensed water is supplied to mixing equipment. In the mixing facility, the condensed water supplied from the fermentation drying facility is added to the mixed waste, and the mixed waste is adjusted to a predetermined moisture content. Thus, since the mixed waste is adjusted to a predetermined moisture content, the mixed waste can be effectively fermented and dried by the fermentation unit of the fermentation drying equipment.

  In the municipal waste recycling plant according to an embodiment, the mixing facility adjusts the mixed waste to a moisture content of 50 wt% or more and 60 wt% or less.

  According to the above embodiment, the mixed waste is adjusted to a moisture content of 50 wt% or more and 60 wt% or less by the mixing equipment, so that the mixed waste is effectively fermented and dried by the fermentation unit of the fermentation drying equipment. Can do.

  The recycling plant for municipal waste according to one embodiment is made of a light material separated from the material to be fermented and dried by the fermentation drying facility and a light material among the combustible materials separated by the pretreatment facility. And a molding apparatus for producing a solid fuel by mixing and molding these materials.

  According to the above-described embodiment, a relatively large amount of waste is processed in the fermentation drying facility, so that it is separated in the pre-processing facility from the light-weight material that has been separated from the material to be fermented and dried in the fermentation drying facility. A relatively large amount of solid fuel can be produced by a molding apparatus using the light weight of the combustible materials thus produced.

  In one embodiment, the municipal waste recycling plant separates fine particles from the processed material that has been fermented and dried by the fermentation drying equipment, and uses this fine particles to produce compost.

  According to the above-described embodiment, a relatively large amount of waste is processed in the fermentation drying equipment, so that the fine particles separated from the processed material fermented and dried in the fermentation drying equipment can be used relatively. A large amount of compost can be produced.

In one embodiment of the municipal waste recycling plant, the pretreatment facility has a metal removal device for removing metal from waste,
The returned fermented product obtained by returning a part of the processed material subjected to the fermentation drying process to the waste before removing the metal by the metal removing device is mixed.

  According to the above embodiment, the metal is removed from the waste by the metal removing device in the pretreatment facility. When the returned fermented product is mixed with the waste before removing the metal with the metal removing device, the water content of the returned fermented product is lower than that before the fermented and dried treatment by the fermentation drying process. The moisture content of the waste from which the metal is to be removed can be reduced. Therefore, the malfunction of the metal removing apparatus due to the high water content can be prevented, and the metal can be efficiently removed from the waste. Moreover, the waste after the metal is removed can be effectively fermented in the fermentation drying equipment and dried by mixing the fermented product back to the waste.

In one embodiment of the municipal waste recycling plant, the fermentation unit of the fermentation drying equipment is,
A fermentation room for storing and storing the object to be treated on the floor surface having air permeability and water permeability;
A fermentation water storage chamber that is disposed below the fermentation chamber and receives water that has flowed out of the workpiece;
A fermentation room watering means for spraying the water in the fermentation water storage room to the object to be treated in the fermentation room;
A fermentation chamber air circulation means for guiding the air in the fermentation chamber to the fermentation water storage chamber.

  According to the said embodiment, in the fermentation unit of fermentation drying equipment, the to-be-processed object is mounted on the floor surface which has air permeability and water permeability, is accommodated in a fermentation room, and the fermentation arrange | positioned under this fermentation room. The water flowing out from the object to be treated is received in the water storage chamber. Water in the fermentation water storage chamber is sprayed on the object to be processed in the fermentation chamber by the fermentation chamber watering means, and the air in the fermentation chamber is guided to the fermentation water storage chamber by the fermentation chamber air circulation means. In this way, about the to-be-processed object mounted on the floor surface which has air permeability and water permeability of a fermentation room, while circulating water by a fermentation room watering means, and circulating air by a fermentation room air circulation means, to-be-processed The aerobic fermentation of the product can be promoted to effectively promote the fermentation and drying.

In the municipal waste recycling plant of one embodiment, the deodorizing unit of the fermentation drying equipment is
A deodorizing chamber in which a piece of wood is placed on a floor surface having air permeability and water permeability;
A deodorizing water storage chamber which is disposed below the deodorizing chamber and receives water flowing out of the wood pieces;
Fermentation chamber air introduction means for guiding the air in the fermentation chamber of the fermentation unit to the deodorized water storage chamber;
A deodorizing chamber sprinkling means for spraying water of the deodorizing water storage chamber onto the wood pieces of the deodorizing chamber.

  According to the above embodiment, in the deodorization unit of the fermentation drying equipment, the wooden piece is placed on the floor surface having the breathability and water permeability of the deodorization chamber, and in the deodorization water storage chamber disposed below the deodorization chamber, Water that has flowed out of the wood piece is received. The air in the fermentation chamber of the fermentation unit is guided to the deodorized water storage chamber by the fermentation chamber air introduction means. Moreover, the water of the said deodorizing water storage room is sprayed on the wood piece of the said deodorizing room by the fermentation room watering means. When the air which has the odor of the fermentation chamber of the said fermentation unit permeate | transmits the floor surface which has the air permeability of a deodorizing chamber, and passes a wood piece, it is deodorized by the fermentation microbe attached to the wood piece. Since water is circulated in the wood piece by the fermentation room watering means, the fermentation bacteria can be effectively cultured, and the odor of the fermentation room can be effectively deodorized.

It is a block diagram which shows the recycling plant of the municipal waste as embodiment of this invention. It is a schematic diagram which shows a part of pre-processing line. It is a schematic diagram which shows the other part of a pre-processing line. It is a schematic diagram which shows a wood material production line and a mixing line. It is a schematic diagram which shows a fermentation drying line. It is a schematic diagram which shows a selection line. It is a schematic diagram which shows a polyvinyl chloride removal line and a RPF manufacturing line. It is sectional drawing which shows a rocking sorter. It is a longitudinal cross-sectional view which shows a paddle mixer. It is a cross-sectional view showing a paddle mixer. It is a figure which shows the mixing blade | wing of a paddle mixer. It is a cross-sectional view which shows fermentation drying equipment. It is a cross-sectional view showing a specific gravity difference sorter. It is a schematic diagram which shows an optical sorter.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a municipal waste recycling plant of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram showing a municipal waste recycling plant as an embodiment of the present invention. This municipal waste recycling plant produces compost and solid fuel by processing waste discharged from households and offices. As shown in FIG. 1, this recycling plant 1 includes a pretreatment line 2 as a pretreatment facility, a wood material production line 3, a mixing line 4 as a mixing facility, and a fermentation drying line 5 as a fermentation drying facility. , A selection line 6, a polyvinyl chloride removal line 7, and an RPF production line 8.

  The pretreatment line 2 shown in FIGS. 2A and 2B processes municipal waste, which is waste collected by the waste collection business, and separates it into combustible and incombustible materials. The pretreatment line 2 is charged with a mixture of combustible materials and non-combustible materials. Here, combustible materials include garbage, paper waste, waste paper, cloth waste, clothing, wood waste, leather products, and the like. Synthetic resin such as synthetic fiber cloth, plastic containers, confectionery bags, various containers such as tubes, trays, cups, bottles, polystyrene foam cushioning materials, plastic toys, and plastic stationery. Substances to be included are also included in combustible materials. On the other hand, non-combustible materials include, for example, metal materials such as steel furniture, pots, pans, and beverage cans, ceramics, glass, small waste home appliances, and waste dry batteries. The combustible material and the incombustible material that are put into the pretreatment line 2 may be mixed or may be separated from each other. This pretreatment line 2 separates combustibles and incombustibles that have been added, and combustibles are directly used as materials for RPF (Refuse Paper & Plastic Fuel) as solid fuel. The fermentable direct material and the combustible fermented material used for the RPF material or compost material after fermentation and drying. Examples of the combustible direct material include paper waste and waste plastic, and examples of the combustible fermentation material include raw garbage and fiber waste. Moreover, in the pre-processing line 2, in order to adjust the water | moisture content of a combustible fermentation material, the return fermented product returned from the selection line 6 is mixed with a combustible fermentation material.

  The wood material production line 3 shown in FIG. 3 is for processing wood waste, and waste wood, thinned wood, pruned wood, and wood waste materials such as wood lumber produced by the demolition of buildings are collected. It is thrown in. This wood material production line 3 crushes wood waste to form a piece of wood as a wood material. The wood pieces produced in the wood material production line 3 are mixed with the combustible material from the pretreatment line 2 in the mixing line 4. The piece of wood formed in the wood material production line 3 has a dimension of 50 mm or more and 300 mm or less.

  The mixing line 4 shown in FIG. 3 mixes the combustible material from the pretreatment line 2, the wood pieces from the wood production line 3, and the return fermented product returned from the sorting line 6 to produce mixed waste. . Moreover, the return fermented water returned from the fermentation drying line 5 is mixed with mixed waste, and the moisture content of the mixed waste is adjusted to a value suitable for promoting fermentation in the fermentation drying line 5. The water content of the mixed waste to be adjusted by mixing the return fermented water is 50 wt% or more and 60 wt% or less, particularly preferably about 55 wt%.

  The fermentation drying line 5 shown by FIG. 4 ferments the mixed waste from the mixing line 4, and dries the mixed waste with the heat accompanying fermentation. The fermentation drying line 5 performs fermentation of mixed waste by a so-called biotunnel method in which fermentation is performed in an elongated rectangular fermentation building as a fermentation unit and deodorization is performed in a deodorization building as a deodorization unit.

  The sorting line 6 shown in FIG. 5 sorts the processed material that has been fermented and dried in the fermentation drying line 5 and sorts the RPF material and compost. In addition, the returned fermented product to be supplied to the pretreatment line 2 and the mixing line 4 is selected. Furthermore, the incombustible material remaining on the object to be processed is selected.

  A polyvinyl chloride removal line 7 shown in FIG. 6 removes vinyl chloride from the RPF material selected by the selection line 6. For the removal of vinyl chloride, for example, an optical vinyl chloride sorting device can be used.

  The RPF production line 8 shown in FIG. 6 molds the material from which vinyl chloride has been removed by the polyvinyl chloride removal line 7 to produce RPF. Molding can be performed using an extruder or a pellet mill.

  Hereinafter, the configuration of each line and the details of processing performed in each line will be described for each line.

  FIG. 2A is a schematic diagram showing a part of the pretreatment line 2 of the recycling plant 1, and FIG. 2B is a schematic diagram showing a part of the pretreatment line 2 of the recycling plant 1. In the pretreatment line 2, the waste collected in the garbage collection business is received by the receiving conveyor 11 and sent to the rough crusher 12. The rough crusher 12 performs rough crushing of waste. When the waste is wrapped in a bag or a container, the crushing machine 12 breaks the bag or the container and breaks the waste into pieces. . The coarse crusher 12 accommodates a rotor that is rotationally driven in a casing having a hopper with an inclined side plate that forms a processing space narrowed downward. The rotor has a plurality of rotary blades arranged in the longitudinal direction, and is supported by a bearing at the upper portion of the central portion of the upper partition plate disposed in the transverse direction between the rotary blades. Below the upper partition plate, a lower partition plate is provided in which a plurality of fixed blade longitudinal members are fixed on an arc surface to form a rough screen. As the rough crusher 12, a known hammer crusher or a rotary screw crusher may be used. The screw crusher may be either a biaxial type or a uniaxial type.

  The waste roughly crushed by the rough crusher 12 is conveyed by a conveyor and supplied to the swing sorter 13. The swing sorter 13 sorts the object to be processed into a lightweight object, a heavy object, and a fine particle object. A lightweight thing is a thing with comparatively small bulk specific gravity, and among combustibles, sheet-like or plate-like paper, cloth, fiber waste, etc. are contained. Moreover, a sheet-like or thin plate-like synthetic resin substance is included. A heavy article has a relatively large bulk specific gravity, and includes a piece of wood, a container and a bottle made of a synthetic resin among combustible substances. In addition, among non-combustible materials, metals, ceramics, glass and the like having relatively large dimensions are included. The fine-grained material has a relatively large true specific gravity and a small diameter, and includes a high water content food basket, which is a main component of garbage, metal grains, ceramic grains, earth and sand, and the like.

  As shown in the longitudinal sectional view of FIG. 7, the swing sorter 13 is supported by the frame 110 and is inclined such that one end in the longitudinal direction is positioned below the other end, and the casing 101 is long in the casing 101. A plurality of strip-shaped sieve plates 106 that are inclined in a direction and swing to feed waste from the bottom to the top, and strips above the plurality of strip-shaped sieve plates 106 in the casing 101. A blower 115 for blowing air is provided along the sieving plate 106 from below to above as indicated by an arrow W1. The casing 101 includes an input port 102 provided at the upper longitudinal center, a heavy material discharge port 103 provided at one end of the lower longitudinal direction, and a fine granule provided at the lower longitudinal center. It has a discharge port 104 and a lightweight material discharge port 105 that is located above the fine particle discharge port 104 and provided on the other end side in the longitudinal direction.

  The strip-shaped sieve plate 106 includes a strip-shaped screen 109 formed of a punching board or a lattice board, and saw-tooth members 107 provided on both side edges in the longitudinal direction of the strip-shaped screen 109. The strip-shaped screen 109 is provided with a plurality of circular or square sieve holes 109a having a diameter of 10 mm to 25 mm. The saw-tooth member 107 has a saw-tooth 108 formed by a gentle upward inclined portion 108a from one end side to the other side and a steeply downward inclined portion 108b from the one end side to the other end side. The strip-shaped sieve plate 106 is swingably supported by eccentric bearing units 120 and 130 attached to the casing 101.

  In the eccentric bearing units 120 and 130, a driving force is input to the eccentric bearing unit 120 that supports one end side of the strip-shaped sieve plate 106, and the eccentric bearing unit 130 that supports the other end side of the strip-shaped sieve plate 106 is a strip-shaped sieve. It is formed so as to follow when the plate 106 swings. The drive-side eccentric bearing unit 120 includes a circular eccentric plate 121 that is rotationally driven by a motor, a short cylindrical eccentric rotating member 122 that surrounds the outer periphery of the eccentric plate 121, and the eccentric plate 121 and the eccentric rotating member 122. And a rolling bearing interposed therebetween. The eccentric plate 121 is fixed to the drive shaft 123, and the eccentric bearing unit 120 of another strip-shaped sieve plate 106 is fixed to the drive shaft 123 in common. The driven-side eccentric bearing unit 130 includes an eccentric plate 131 and an eccentric turning member 132 that are configured in the same manner as the eccentric plate 121 and the eccentric turning member 122 of the driving-side eccentric bearing unit 120. The eccentric plate 131 is fixed to a support shaft 133 that is rotatably supported with respect to the frame 110. In the drive-side eccentric bearing unit 120, when the drive shaft 123 is rotationally driven by a motor, the eccentric plate 121 rotates eccentrically around the drive shaft 123, and accordingly, the eccentric turning member 122 is eccentric about the swing shaft 123. Turn. As a result, the strip-shaped screen 109 connected to the eccentric turning member 122 swings up and down. The plurality of strip-shaped sieve plates 106 are set so as to have a phase difference of 180 degrees with respect to the adjacent screen 109. Therefore, when a certain strip-shaped screen 109 is positioned at the uppermost point, the strip-shaped screen 109 adjacent thereto is positioned at the lowest point.

  When the swing sorter 13 is operated, the strip-shaped sieve plate 106 having the above-described configuration is driven to swing, and a workpiece is input from the input port 102 of the casing 101 as indicated by an arrow F1. The charged workpiece is unwound by a strip-shaped sieve plate 106 that is driven to swing, and fine particles 112 such as earth and sand, nails, leftovers, and brown tea fall contained in the workpiece fall downward from the sieve hole 109a. Then, it is discharged from the fine particle discharge port 104. Among the objects to be processed, lightweight articles 113 such as fiber scraps, paper, trays, wood pieces, plastic sheets, etc. are transported upwardly while sliding on the upward inclined portion 108a of the saw tooth 108 and being inherited by the downward inclined portion 108b of the saw tooth 108. Then, it falls from the other end of the strip-shaped sieve plate 106 and is discharged from the lightweight object discharge port 105. Among objects to be processed, heavy objects 111 such as pottery pieces, metal pieces, hardware, empty cans, PET bottles, blocks, stones, and shoes move downward while rolling or sliding on an inclined strip-shaped screen 109 to form strips. It falls from one end of the sieve plate 106 and is discharged from the heavy material discharge port 103. As described above, the lightweight object 113 conveyed on the strip-shaped sieve plate 106 upward is mainly non-repulsive such as fiber waste, paper, plastic film, or the like. On the other hand, the heavy object 111 that moves the strip-shaped sieve plate 106 downwardly is mainly repulsive, such as metal, stone, or hard plastic.

  The blower 115 loosens an object to be processed which is input from the input port 102 of the casing 101 as indicated by an arrow F1 by an air flow, and a light object 113 such as a tape or a sheet is connected to the other end of the strip-shaped sieve plate 106 on the other end. Blow away to the side to promote sorting.

  In this way, the swing sorter 13 separates the waste that is the object to be processed into the heavy object 111, the fine particle 112, and the light object 113.

  The lightweight object 113 sorted by the swing sorter 13 is further classified into a lightweight article and a heavy article by the wind sorter 14. Lightweight materials sorted by the wind power sorter 14 are waste plastics, paper scraps, and the like, and are collected in the plastics yard 15 as RPF materials used in the RPF production line 8. The heavy items selected by the wind power sorter 14 are fiber scraps, clothes, etc., and the fine particles 112 selected by the rocking sorter 13 merge with the water-adjusted ones and are collected in the fermented product yard 22. And used as a fermented dried product in the fermentation drying line 5.

  The fine particles 112 selected by the swing sorter 13 are received by the receiving hopper 18 and are put into the paddle mixer 19 by a cutting device provided in the receiving hopper 18. The paddle mixer 19 is fed with fermented and dried material obtained by subjecting waste to fermented and dried from another receiving hopper 17. The other receiving hoppers 17 are fed with the fermented dried product selected by the sorting line 6 and collected in the fermented dried product yard 36. The fine particles 112 selected by the rocking sorter 13 are mainly raw garbage and have a high moisture content of 80 wt% to 95 wt%. Therefore, the paddle mixer 19 adjusts the moisture content to about 30 wt% as a whole by mixing the fine granules 112 with the fermented dried product having a moisture content of about 5 wt% to 20 wt%.

  As shown in the longitudinal sectional view of FIG. 8, the paddle mixer 19 includes a first input port 142 into which fine particles from the receiving hopper 18 are input and a second input port into which fermented dried material from the receiving hopper 17 is input. 143 and the casing 141 which has the discharge port 144 which discharges | emits the adjustment fine granule formed by mixing a fine granule and a fermentation dried material, and a mixing chamber is formed in the inside. In the casing 141, two rotary shafts 145 and 145 are arranged in parallel between the first and second input ports 142 and 143 and the discharge port 144, and a plurality of mixing blades are provided on each of the rotary shafts 145 and 145. 147, 147,... Are fixed in a spiral shape. The two rotating shafts 145 and 145 are respectively provided with gears 146 that are located outside the casing 141 and mesh with each other. A motor (not shown) is provided outside the casing 141, and a chain is wound around a sprocket of an output shaft of the motor and a sprocket fixed to one rotating shaft 145. One rotating shaft 145 is rotationally driven by the motor via a chain, and the other rotating shaft 145 is rotationally driven by a gear 146 in a direction opposite to the one rotating shaft 145. As a result, the mixing blades 147 and 147 fixed to the two rotating shafts 145 and 145 are rotationally driven to perform the feeding operation and mixing operation of the organic waste and the dry waste. The number of rotations of the motor is controlled by the controller, and the operation of the paddle mixer 19 is controlled.

  FIG. 9 is a cross-sectional view of the paddle mixer 19 at the position where the first inlet 142 is disposed. As shown in FIG. 9, the plurality of mixing blades 147, 147,... Are arranged at an angular interval of 90 ° from each other when viewed in the direction of the rotation shaft 145. As shown in FIG. 9, the mixing blades 147 and 147 are disposed so as to overlap between the rotation shafts 145 and 145 when viewed in the direction of the rotation shaft 145. The plurality of mixing blades 147, 147,... Do not need to overlap between the rotation shafts 145, 145 when viewed in the direction of the rotation shaft 145. The mixing blades 147, 147,... Of each rotation shaft 145 are attached to the rotation shaft 145 by the attachment shaft 149, and the pitch angle around the attachment shaft 149 is inclined with respect to the right angle plane of the rotation shaft 145. Has been adjusted. The mixing blades 147, 147,... Arranged from the first insertion port 142 to half the distance between the insertion port 142 and the discharge port 144 in the direction of the rotation axis 145 have pitch angles. It is set in the same direction. Thereby, as the rotating shaft 145 rotates, the object to be processed is sent from the input ports 142 and 143 toward the discharge port 144. On the other hand, the mixing blades 147, 147,... Arranged from the half of the distance between the input port 142 and the discharge port 144 in the direction of the rotation shaft 145 to the discharge port 144 are adjacent to the adjacent mixing blade 147. The pitch angles are set to be opposite to each other. That is, among the four mixing blades 147a, 147b, 147c, and 147d arranged at an angle of 90 ° around the rotation shaft 145, as shown in the cross section perpendicular to the axis in FIG. The pitch angles of the mixing blades 147a and 147c located on the same diameter in the direction are set in the same direction r1. On the other hand, the pitch angle of the mixing blades 147b and 147d located on the same diameter in the horizontal direction in FIG. 10 is set in the direction r2 opposite to the pitch angle of the mixing blades 147a and 147c. As a result, as the rotating shaft 145 rotates, the force from the mixing blades 147, 147,... To the object to be processed, the input port 142, 143 to the discharge port 144, and the discharge port 144 to the input ports 142, 143. When moving toward, both the force and force are applied to effectively mix the workpieces. In addition, the mixing blades 147, 147,... Arranged from the half of the distance between the input port 142 and the discharge port 144 in the direction of the rotation shaft 145 to the discharge port 144 are pitch angles of the mixing blade 147. May be set in the opposite direction every predetermined number, for example, may be set in the opposite direction at a rate of one of the four sheets. In addition, the range in which the mixing blades 147 having the opposite pitch angles are installed may be any part between the second inlet 143 and the outlet 144.

  The two rotating shafts 145 and 145 of the paddle mixer 19 are arranged such that the helical mounting positions of the mixing blades 147, 147,... And the pitch angles of the mixing blades 147, 147,. Is arranged. Further, as can be seen from FIG. 9, the two rotary shafts 145 and 145 are arranged so that the trajectories of the mixing blades 147, 147,. Thereby, as the rotating shafts 145 and 145 rotate in opposite directions, the feeding operation and the mixing operation are effectively performed in the same direction in the axial direction.

  The processed material in which the fine granules and the dried fermentation product are mixed by the paddle mixer 19 and the water content becomes about 30 wt% is guided to the drum magnetic separator 20, and the mixed magnetic material is removed. The magnetic substance to be removed is an iron piece or a waste dry battery. By obtaining an object to be processed having a water content of about 30 wt% by the paddle mixer 19, the malfunction of the drum magnetic separator 20 due to the moisture of the object to be processed is prevented, and the drum magnetic separator 20 can effectively It can be removed. The magnetic material selected by the drum magnetic separator 20 is stored in a container 21 and sent to a processing facility such as a reuse. The processed material from which the magnetic material has been removed by the drum magnetic separator 20 is collected in the fermented product yard 22.

  The heavy article 111 sorted by the swing sorter 13 is sent to the manual sorting step shown in FIG. 2B. In the manual sorting step, the object to be processed of the heavy object 111 is placed on the work conveyor, and first, the magnetic material is removed by the magnetic separator 23 arranged in the vicinity of the starting end of the work conveyor. The magnetic material removed by the magnetic separator 23 is collected in the magnetic material yard 24. The to-be-processed object from which the magnetic material has been removed is sorted and removed by the sorter while the non-combustible material other than the magnetic material is sorted by the sorter. The incombustibles removed by the sorter are collected in a ceramic yard 25, an aluminum can yard 26, a plastic bottle yard 27, and a bottle yard 28 according to their types. The object to be processed from which the incombustible material has been removed as it flows through the work conveyor is put into a crusher 29 disposed at the end of the work conveyor and crushed. The processed material crushed by the crusher 29 is collected in the fermented product yard 30 and used as the fermented dried product of the fermentation drying line 5.

  The workpiece to be processed in the pretreatment line 2 is sent to the mixing line 4 and mixed with the wood pieces produced in the wood material production line 3 and the return fermentation product returned from the sorting line 6. FIG. 3 is a schematic diagram showing the wood material production line 3 and the mixing line 4.

  In the wood material production line 3, wood waste such as waste wood, thinned material, pruned material, and lumber edge material, which are wood pieces, is input to the crusher 31. The wooden waste is crushed by the crusher 31 to produce a piece of wood having a diameter of 50 mm or more and 300 mm or less, and this piece of wood is conveyed to a piece of wood yard 32 by a conveyor. The wood pieces of the wood piece yard 32 and the fermented product of the fermentation dried product yard 33 of the sorting line 6 are put into the belt feeder 34 of the mixing line 4. The fermented product in the fermented dried product yard 33 is mainly composed of wood pieces separated from the processed material that has been fermented and dried in the fermented drying line 5, and is returned to the mixing line 4 to return the inoculum for fermentation. It is thrown in. In the mixing line 4, the combustible material collected in the fermented material yard 22 in the pretreatment line 2 and the combustible material collected in the fermented material yard 30 are put into the belt feeder 35. Further, the fermented product in the fermented dried product yard 59 of the sorting line 6 is put into a receiving hopper 37 with a cutting device. Wood fragments and fermentation products supplied from the belt feeder 34, combustible materials supplied from the belt feeder 35, and fermentation products cut out from the cutting device of the receiving hopper 37 are put into a mixer 38 and mixed. The The mixed waste mixed by the mixer 38 is collected in the mixture yard 39. In the mixture yard 39, the fermented water introduced from the fermentation drying line 5 by the pump 41 is sprayed on the mixed waste by the watering nozzle 40 in order to make the mixed waste have a moisture content suitable for fermentation. By mixing fermented water, the mixed waste is adjusted to a moisture content of 50 wt% or more and 60 wt% or less. The mixed waste in the mixture yard 39 whose water content has been adjusted is put into the fermentation drying line 5 shown in FIG.

  As shown in FIG. 4, the fermentation drying line 5 has a plurality of fermentation buildings 43, 43,... As fermentation units and a deodorization building 44 as deodorization units. The mixed waste in the mixture yard 39 of the mixing line 4 is put into each of the plurality of fermentation buildings 43, 43,..., Fermented by aerobic fermentation, and dried by the heat generated by the fermentation. The mixed waste that has been subjected to fermentation and drying is guided to the belt feeder 51 from each of the plurality of fermentation buildings 43, 43,. The water in the water storage chamber 165 of the deodorizing building 44 is sent to the mixture yard 39 of the mixing line 4 by the pump 41 as fermentation water.

  FIG. 11 is a cross-sectional view showing the fermentation building 43 and the deodorizing building 44 of the fermentation drying line 5. The fermentation building 43 includes a concrete frame 150 constituting walls and a floor, a roof 151 installed on the concrete frame 150, a floor support structure 152 provided in a lower portion inside the concrete frame 150, and a floor support structure 152. Supported by the floor body 153 having air permeability and water permeability, a water storage chamber 154 as a fermentation water storage chamber formed below the floor main body 153, a fermentation chamber 155 formed above the floor main body 153, and a roof A watering nozzle 156 serving as a fermentation room watering means installed inside 151, a pump 157 for guiding the water in the water storage room 154 to the watering nozzle 156, the air in the fermentation room 155 is guided to the water storage room 154, and the outside air is stored in the water A blower 158 led to the chamber 154 and a sensor 159 for measuring the temperature, humidity and oxygen concentration in the fermentation chamber 155 are provided. The blower 158 has an intake port connected to an intake pipe 177 whose tip is opened to the outside air and forms an intake port. In the middle of the intake pipe 177, an indoor communication pipe 176 communicating with the fermentation chamber 155 is connected by a three-way valve 175 provided in the intake pipe 177. The three-way valve 175 is controlled by the control device 172 based on the signal S1 from the sensor 159, and the intake port of the blower 158 is switched to either the intake port of the intake pipe 177 or the indoor communication pipe 176 so as to communicate with each other. It is configured. The discharge port of the blower 158 communicates with the water storage chamber 154. The operation of the blower 158 is controlled by the control device 172 based on the signal S1 from the sensor 159. The fermentation building 43 is substantially sealed by a concrete casing 150 and a roof 151, and the internal air is exhausted by the blower 170 through the fermentation chamber exhaust pipe 171.

  The deodorization building 44 includes a concrete frame 160 constituting walls and floors, a roof 161 installed on the concrete frame 160, a ventilation window 162 provided between the concrete frame 160 and the roof 161, and a concrete frame 160. A floor support structure 163 provided at an inner lower part, a floor main body 164 supported by the floor support structure 163 and having air permeability and water permeability, and a water storage chamber 165 as a deodorization water storage chamber formed below the floor main body 164. A deodorizing chamber 166 formed above the floor main body 164, a watering nozzle 167 as a deodorizing chamber watering means installed on the indoor side of the roof 161, and a pump 168 for guiding the water in the water storage chamber 165 to the watering nozzle 167 And a blower 170 for guiding the air containing water vapor in the fermentation chamber 155 of the fermentation building 43 to the water storage chamber 165 of the deodorizing building 44. The intake port of the blower 170 is connected to the fermentation chamber exhaust pipe 171 that communicates with the fermentation chamber 155 of the deodorizing building 44, and the discharge port of the blower 170 communicates with the water storage chamber 165 of the deodorizing building 44. The operation of the blower 170 is controlled by the control device 172 based on the signal S1 from the sensor 159. On the floor body 164, three wood chip layers of a rough chip layer P1, a medium chip layer P2, and a fine chip layer P3 are installed in this order from the floor main body 164 side. The rough chip layer P1 is formed of a cylindrical wooden chip having a diameter of 20 mm to 60 mm and an axial length of 100 mm to 150 mm. The middle chip layer P2 is formed of a rectangular parallelepiped wooden chip having a side of 20 mm or more and 60 mm or less, and preferably formed of a flat wooden chip of 40 mm square and 10 mm in thickness. The fine chip layer P3 is formed of a rough chip having a diameter of 2 mm to 8 mm, preferably 3 mm to 5 mm.

  In the fermentation drying line 5, the mixed waste in the mixture yard 39 is carried from a carry-in port provided at the longitudinal end of the fermentation building 43 and accumulated on the floor main body 153 in the fermentation chamber 155. A double door is provided at the carry-in entrance, and the airtightness in the fermentation chamber 155 is maintained. The mixed waste D accumulated in the fermentation chamber 155 is fermented by the fermentation bacteria of the fermentation product previously mixed in the mixing line 4 and the fermentation bacteria contained in the water of the water storage chamber 154 sprayed by the watering nozzle 156. It is accelerated and generates heat. The mixed waste D is dried by the heat generated by this fermentation. The air in the fermentation chamber 155 is guided to the water storage chamber 154 through the indoor communication pipe 176 and the intake pipe 177 by the blower 158, whereby an air flow is formed in the mixed waste D, and thereby the aerobic property of the mixed waste D Fermentation is promoted. Moreover, the air containing the water vapor in the fermentation chamber 155 of the fermentation building 43 is guided to the water storage chamber 165 of the deodorizing building 44 by the blower 170, so that the fermentation chamber 155 is kept at a negative pressure, and the odor in the fermentation chamber 155. Is prevented from diffusing outside the fermentation building 43.

  In the deodorizing building 44, the odor generated in the fermentation building 43 is decomposed. Water vapor and air in the fermentation chamber 155 containing the odor generated in the fermentation building 43 are guided to the water storage chamber 165 of the deodorization building 44 through the fermentation chamber exhaust pipe 171 by the blower 170. The water vapor and air guided to the water storage chamber 165 pass through the floor body 164 and sequentially pass through the three wood chip layers of the coarse chip layer P1, the medium chip layer P2, and the fine chip layer P3. When passing through these wood chip layers P1, P2, P3, the odor contained in water vapor and air is decomposed and deodorized by the action of the fermenting bacteria attached to the wood chips of each layer. Part of the water vapor adheres to the wood chip and condenses, passes through the floor body 164 and flows down to the water storage chamber 165. The deodorized air is released to the atmosphere through the ventilation window 162. Water in the water storage chamber 165 is sprayed by the watering nozzle 167 and an air flow is formed from the water storage chamber 165 to the ventilation window 162, thereby promoting aerobic fermentation by the fermenting bacteria attached to the wood chip layers P1, P2, and P3. The odor is effectively decomposed.

  The environment of the fermentation room 155 of the fermentation building 43 is controlled by the control device 172. Specifically, based on the temperature, humidity, and oxygen concentration in the fermentation chamber 155 measured by the sensor 159, the operations of the pump 157, the blower 158, and the three-way valve 175 are controlled by the control device 172. When the temperature in the fermentation chamber 155 measured by the sensor 159 exceeds the upper limit reference value, the flow rate of the pump 157 is increased, and the three-way valve 175 communicates the indoor communication pipe 176 with the intake pipe 177. Increase 158 flow rate. When the temperature in the fermentation chamber 155 measured by the sensor 159 falls below the lower limit reference value, the flow rate of the pump 157 is reduced, and the intake port of the blower 158 is communicated with the indoor communication pipe 176 with the three-way valve 175. The flow rate of the blower 158 is decreased. Further, the mixed fermented product D is heated by operating a heater built in the concrete casing 150. When the humidity in the fermentation chamber 155 measured by the sensor 159 exceeds the upper limit reference value, the flow rate of the pump 157 is reduced, and the intake port of the blower 158 is connected to the intake port of the intake pipe 177 with the three-way valve 175. The outside air is guided to the water storage chamber 154. When the humidity in the fermentation chamber 155 measured by the sensor 159 falls below the lower limit reference value, the flow rate of the pump 157 is increased and the three-way valve 175 connects the indoor communication pipe 176 to the intake pipe 177 to store air. Circulate between chamber 154 and fermentation chamber 155. When the oxygen concentration in the fermentation chamber 155 measured by the sensor 159 falls below the lower limit reference value, the intake port of the blower 158 is communicated with the intake port of the intake pipe 177 by the three-way valve 175, and the outside air is guided to the water storage chamber 154. .

  Thus, by controlling the environment of the fermentation chamber 155 of the fermentation building 43 with the control device 172, the fermentation of the mixed waste D in the fermentation chamber 155 proceeds, and the following temperature change occurs. First, until about 3 days have passed since the introduction of the mixed waste D, the temperature of the mixed waste D in the fermentation chamber 155 is 60 ° C. or less, and then the temperature of the mixed waste D rises due to the fermentation. To around 15 days, a temperature of 60 ° C. or higher and 80 ° C. or lower is maintained. Thereafter, when about 15 days have passed since the addition, the fermentation is completed and the temperature of the mixed waste D starts to decrease. And it falls to 30 degreeC or more and 50 degrees C or less in about 20 days from throwing in, and drying of the mixed waste D is completed, and it becomes a fermented dried material whose water content is about 5 wt% or more and 20 wt% or less.

  The fermented and dried product obtained by fermenting and drying the mixed waste in the fermenting and drying line 5 is input to the belt feeder 51 of the sorting line 6. FIG. 5 is a schematic diagram showing the configuration of the sorting line 6. In the sorting line 6, the fermented material put into the belt feeder 51 is guided to the swinging sorter 52 to be separated into a heavy material, a fine particle material, and a lightweight material. The swing sorter 52 has the same structure as the swing sorter 13 in the pretreatment line 2. The heavy objects sorted by the swing sorter 52 include combustible materials such as wooden pieces and synthetic resin containers, and non-combustible materials such as relatively large metals, ceramics, and glass. The magnetic material is removed from the heavy material by the magnetic separator 53, and the heavy material from which the magnetic material has been removed is collected in the fermented product yard 33. The heavy material collected in the fermented product yard 33 is returned to the mixing line 4 as a return fermented product. Fine granules sorted by the swing sorter 52 are fermented and dried food waste, small-diameter metal, ceramics, and earth and sand, and are sorted by the sorting conveyor 58. One of the fine granules distributed by the distribution conveyor 58 is collected in the return fermentation yard 59 and is input to the sorting line 6 as a return fermentation product. The other fine particles sorted by the sorting conveyor 58 are further classified into heavy, fine and lightweight by the specific gravity difference sorter 61. The heavy objects sorted by the specific gravity difference sorter 61 are mainly metals, ceramics, and earth and sand, and are collected in the incombustible material yard 62 for final disposal. The fine granules sorted by the specific gravity difference sorter 61 are mainly fermented and dried food wastes, collected in the compost yard 63, and used as compost. The light weight product sorted by the specific gravity difference sorter 61 is a fermented and dried product of food waste having a relatively small bulk specific gravity and is collected in the fermented and dried product yard 36. The lightweight material in the fermented dried product yard 36 is put into the pretreatment line 2 in order to adjust the fine particles 112 of the pretreatment line 2 having a moisture content of 80 wt% to 95 wt% to about 30 wt%. Moreover, the lightweight thing of the said fermented dried material yard 36 is thrown into the RPF production line 8 as RPF material. The dust generated in the specific gravity difference sorter 61 is collected by the cyclone separator 65 and collected in the fermented dried product yard 36. Lightweight materials sorted by the swing sorter 52 are sheet-like or plate-like paper and cloth, fiber scraps, and synthetic resin substances, and are collected in the RPF material yard 57 as materials of the RPF production line 8.

  FIG. 12 is a schematic cross-sectional view showing a specific gravity difference sorter 61 used in the sorting line 6. The specific gravity difference sorter 61 has an input port 182 and an exhaust port 184 for the object to be processed at the upper part, and a lightweight material discharge port 185, a fine particle discharge port 186, a heavy material discharge port 187 and an air supply port 183 at the lower part. A casing 181, a swinging net unit 190 that is disposed in the casing 181 and is driven to tilt so that one end is positioned below the other end, and an air supply port 183 in the casing 181. And a blower 188 for sending wind. The oscillating mesh unit 190 has a mesh having a size of 1 mm or more and 10 mm or less, and in the longitudinal section, a long side with a gentle inclination angle on one end side and a short side with a steep inclination angle on the other end side are alternately arranged. And a guide wall 192 erected on both sides of the corrugated net 191 to guide the object to be processed in the extending direction of the corrugated net 191. The swinging net unit 190 is connected to the lower part of the other end of the wave-like net 191 and driven around the arrow R with a rocking shaft 193 provided at the lower part of one end of the wave-like net 191 as a fulcrum. Thus, as shown by the arrow L, it is driven to swing. The wind sent from the blower 188 to the air supply port 183 passes through the wave network 191 of the swing network unit 190 and flows upward, and is discharged from the exhaust port 184 to the outside of the casing 181. The exhaust port 184 is connected to a bag filter, dust of the object to be processed is removed by the bag filter, and the wind from which the dust has been removed is discharged to the atmosphere. When the specific gravity difference sorter 61 operates, the swing net unit 190 is driven to swing and the blower 188 blows air into the casing 181 so that the workpiece is input to the input port 182. The thrown object to be processed falls on the wave network 191 of the rocking net unit 190, and the rocking movement of the rocking net unit 190 causes the lightweight object to move on the wave net 191 downward in the inclination. Then, as shown by an arrow 196, it is discharged from the lightweight object outlet 185. Fine particles of the object to be processed pass through the wave network 191 of the swinging net unit 190 and are discharged from the fine particle discharge port 186 as indicated by an arrow 197. The heavy object among the objects to be processed moves upward on the wave network 191 by the swinging motion of the wave network 191, and is discharged from the heavy material discharge port 187 as indicated by an arrow 198. The

  FIG. 6 is a schematic diagram showing a vinyl chloride removal line 7 for removing vinyl chloride from an RPF material and an RPF production line 8 for producing an RPF by molding an RPF material from which vinyl chloride has been removed. In the PVC removal line 7, the RPF material collected in the plastics yard 15 in the pretreatment line 2, the RPF material collected in the RPF material yard 57 in the sorting line 6, and collected in the fermentation dried product yard 36 in the sorting line 6. The fermented dried product is put into the belt feeder 71 as an RPF material. The RPF material thrown into the belt feeder 71 is evenly dispersed on the conveyance belt of the conveyance conveyor 73 connected to the optical sorting device 74 by the vibration feeder 72. The RPF material sprayed on the transport conveyor 73 is guided to the optical sorting device 74 to separate and remove vinyl chloride. The separated and removed vinyl chloride is subjected to final disposal such as landfill.

  FIG. 13 is a schematic diagram showing the optical sorting device 74. The optical sorting device 74 is disposed in the vicinity of the end portion of the transport conveyor 73, irradiates the object to be processed with near infrared rays as electromagnetic waves, receives the reflected wave, and injects compressed air to the object to be processed. An air gun 203 serving as an injection unit, and an optical unit 202 and a control unit 204 connected to the air gun 203. The air gun 203 is connected to a compressor unit 205 that supplies compressed air. The optical unit 202 includes an irradiation unit 206 as an electromagnetic wave irradiation unit that irradiates a lightweight object on the transport conveyor 73 with a near infrared ray, and a near infrared camera as a reflected wave detection unit that receives a reflected wave of the near infrared ray reflected by the lightweight object. 207. The irradiation unit 206 is formed by arranging a plurality of lamps that irradiate near-infrared rays from the front and rear of the belt of the transport conveyor 73 in the width direction of the belt of the transport conveyor 73. A lens of the near-infrared camera 207 is arranged between each pair of lamps of the irradiating unit 206 so as to receive near-infrared light from directly below.

  When the RPF material that is the object to be processed is transported by the transport conveyor 73 and reaches below the optical unit 202, the irradiation unit 206 of the optical unit 202 irradiates the object to be processed with near infrared rays, and the irradiated near infrared rays are processed. The lens of the near-infrared camera 207 receives the reflected wave reflected by the object. The near-infrared camera 207 receives the reflected near-infrared wave and outputs information indicating the wavelength and intensity of the reflected near-infrared wave to the control unit 204. The control unit 204 analyzes the wavelength and intensity of the reflected wave from each object to be processed based on the information input from the near infrared camera 207, and discriminates the material of the object to be processed based on the spectrum distribution pattern. If the identified material is vinyl chloride as a chlorine-containing resin, the control unit 204 removes the vinyl chloride processing object from the transport conveyor 73. That is, at the timing when the object to be processed made of vinyl chloride reaches the end of the conveyor 73, the control unit 204 outputs the operation signal S2 to the air gun 203 to operate the air gun 203, and the compressed air is processed to the object to be processed made of vinyl chloride. Inject toward The object to be processed made of vinyl chloride is blown off by receiving compressed air, and is collected in a collection chamber 208 provided on the side far from the end of the transfer conveyor 73. The object to be processed other than the waste plastic made of vinyl chloride falls downward from the end of the transport conveyor 73 and is recovered in a recovery chamber 209 provided on the side close to the end of the transport conveyor 73.

  The vinyl chloride separated by the optical sorting device 74 is accommodated in the container 75 and finally disposed. The RPF material from which vinyl chloride has been separated and removed is put into a rotary press crusher 78 as a crusher, and is crushed to a particle size of 50 mm to 150 mm. The RPF material crushed by the rotary press crusher 78 is guided to the drum magnetic separator 79, and the magnetic substance mixed in the RPF material is removed. The magnetic material separated by the drum magnetic separator 79 is accommodated in the magnetic material container 80 and finally disposed. The RPF material from which the magnetic material has been separated and removed by the drum magnetic separator 79 is charged and accumulated in a fixed amount feeder 81 having a cutting screw. A predetermined amount of the RPF material accumulated in the quantitative supply machine 81 is cut out by a cutting screw, and is put into a biaxial screw type molding machine 82 as an RPF molding machine, and is molded into an RPF. This screw type molding machine 82 performs kneading, compression and molding while preventing the back flow of the material with a biaxial screw, and performs high temperature compression molding using frictional heat generated by the compression of the material. Do. An exhaust pipe is connected to the compression chamber and the extrusion chamber of the screw-type molding machine 82 and the cutting screw of the fixed-quantity feeder 81. By this exhaust pipe, the odor generated in the molding process by the screw type molding machine 82 and the odor generated in the cutting process by the cutting screw are guided to the deodorizing device 84 and deodorized, and the deodorized air is released to the atmosphere. The RPF formed by the screw-type molding machine 82 is cooled while being transported by the water-cooled cooling conveyor 85 and collected in the RPF yard 86.

  The RPF molding machine of the RPF production line 8 performs mixing, kneading, heating and extrusion processes of materials, and solidifies combustible paper, fiber and wood components using the molten plastic melting component as a binder to produce RPF. Other molding machines may be used as long as they do. As the RPF molding machine, a ring die molding machine can be used in addition to the screw molding machine.

  As described above, according to the municipal waste recycling plant 1 of the present embodiment, the so-called biotunnel-type fermentation drying line 5 having the fermentation building 43 and the deodorization building 44 can be fermented and dried with high throughput. Can handle a relatively large amount of waste. For example, when the dimensions of the fermentation chamber 155 of the fermentation building 43 are set to a width of 5 m, a height of 5 m, and a length of 30 m, 1600 to 1800 tons of flammable waste can be treated annually. Therefore, the municipal waste recycling plant 1 can be easily enlarged. Moreover, since the fermentation drying line 5 of the recycling plant 1 of this embodiment dries waste with the heat accompanying fermentation of a waste, it is not necessary to obtain the heat for drying a waste by burning RPF. . Therefore, the production efficiency of RPF that is a product of the recycling plant 1 can be increased.

  Moreover, since the mixing line 4 of the recycling plant 1 of this embodiment mixes a piece of wood and a return fermented material with the combustible material sorted by the pre-processing line 2, it forms mixed waste. The mixed waste can be fermented quickly and effectively, and drying can be promoted.

DESCRIPTION OF SYMBOLS 1 Municipal waste recycling plant 2 Pretreatment line 3 Wood material production line 4 Mixing line 5 Fermentation drying line 6 Sorting line 7 Vinyl chloride removal line 8 RPF production line 43 Fermentation building 44 Deodorization building 13, 52 Swing sorter 19 Paddle mixer 20, 79 Drum Magnetic Separator 61 Specific Gravity Difference Sorter 82 Screw Forming Machine 150, 160 Concrete Body 151, 161 Roof 153, 164 Floor Main Body 154, 165 Water Storage Room 155 Fermentation Room 156, 167 Sprinkling Nozzle 158, 170 Blower 166 Deodorization Room

Claims (7)

Pretreatment equipment for separating waste into combustible and incombustible materials;
Mixing the combustible material separated by the pre-treatment facility with a wood material and a re-fermented product obtained by returning a part of the material to be treated that has been fermented and dried to form mixed waste Equipment,
Fermentation drying equipment having a fermentation unit that generates heat by aerobic fermentation to dry the mixed waste formed in the mixing equipment, and a deodorization unit that deodorizes the air in the fermentation unit by aerobic fermentation ,
The deodorizing unit of the fermentation drying facility generates condensed water when deodorizing the air in the fermentation unit,
The above-mentioned mixing facility is supplied with the condensed water generated by the deodorizing unit of the above-mentioned fermentation drying facility, and the supplied condensed water is added to the mixed waste to adjust to a predetermined moisture content. Recycling plant. In the municipal waste recycling plant according to claim 1 ,
The above-mentioned mixing facility adjusts the above-mentioned mixed waste to a moisture content of not less than 50 wt% and not more than 60 wt%. In the municipal waste recycling plant according to claim 1 or 2 ,
A lightweight material separated from the material fermented and dried in the fermentation drying facility and a lightweight material among the combustible materials separated in the pretreatment facility, and these materials are mixed and molded. A municipal waste recycling plant comprising a molding device for producing solid fuel. In the municipal waste recycling plant according to claim 1 or 2 ,
A municipal waste recycling plant characterized in that fine particles are separated from an object that has been fermented and dried by the above-described fermentation drying equipment, and compost is produced using the fine particles. In the municipal waste recycling plant according to any one of claims 1 to 4 ,
The pretreatment facility has a metal removal device for removing metal from waste,
A municipal waste recycling plant characterized by mixing a waste fermented product obtained by returning a part of a processed material that has been subjected to a fermentation drying process to a waste before removing the metal by the metal removing device. . In the municipal waste recycling plant according to claim 1,
The fermentation unit of the fermentation drying equipment is
A fermentation chamber for storing and storing the object to be treated on the floor surface having air permeability and water permeability;
A fermentation water storage chamber disposed below the fermentation chamber and receiving leachate leached from the object to be treated;
Fermentation room watering means for spraying the water in the fermentation water storage room to the object to be treated in the fermentation room;
A municipal waste recycling plant comprising a fermentation room air circulation means for guiding the air of the fermentation room to the fermentation water storage room. In the municipal waste recycling plant according to claim 1,
The deodorizing unit of the fermentation drying equipment
A deodorizing chamber in which a piece of wood is placed on a floor surface having air permeability and water permeability;
A deodorizing water storage chamber which is disposed below the deodorizing chamber and receives leachate exuded from the wood pieces;
Fermentation chamber air introduction means for guiding the fermentation chamber air of the fermentation unit to the deodorized water storage chamber;
A city trash recycling plant comprising: a deodorizing chamber sprinkling means for spraying water of the deodorizing water storage chamber onto the wood pieces of the deodorizing chamber.

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