JP2006001270A - Lignin removed wood chips, manufacturing method of lignin removed wood chips, and organic matter decomposition assistant using lignin removed wood chips - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of lignin removed wood chips capable of efficiently removing lignin from wood chips with hardly destroying a honeycomb structure possessed by the wood chips and suitable of manufacturing a large amount of the lignin removed wood chips, and an organic matter decomposition assistant using the lignin removed wood chips as described above. <P>SOLUTION: The manufacturing method of the lignin removed wood chips comprises the steps of immersing wood chips in an alkali solution and treating the wood chips with the alkali solution to obtain alkali treated wood chips, immersing the alkali treated wood chips in a hydrogen peroxide aqueous solution and treating the alkali treated wood chips with hydrogen peroxide to obtain hydrogen peroxide treated wood chips and immersing/washing the hydrogen peroxide treated wood chips in/with water. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lignin-removed wood chip obtained by removing lignin from wood chips obtained by pulverizing wood, a method for producing such a lignin-removed wood chip, and an organic substance decomposition aid using the lignin-removed wood chip.

  In recent years, biological treatment methods have attracted attention as methods for treating garbage. Many of these biological treatment methods try to biodegrade garbage with microorganisms by mixing the wood chips with microorganisms in the garbage and then stirring the wood chips and garbage at an appropriate temperature. It is.

  However, in general, wood chips obtained by pulverizing wood are difficult to attach microorganisms due to lignin contained in the wood, and therefore, the microorganisms attached to the wood chips tend to lose their activity, and the microorganisms Insufficient growth of food waste has caused a problem that biodegradation of garbage does not proceed sufficiently.

So far, methods have been developed to remove lignin from such wood chips to obtain wood chips to which microorganisms are likely to adhere (see, for example, Patent Document 1).
JP 2003-94407 A (Claims)

  However, this conventional lignin removal method is performed by irradiating far-infrared rays to wood chips, and it is difficult to uniformly irradiate far-infrared rays to a large amount of wood chips, so a large amount of lignin-removed wood chips It was unsuitable for getting.

  An object of the present invention is to provide a lignin-removed wood chip suitable for producing a large amount of lignin-removed wood chips, which can suitably remove lignin from the wood chips while suppressing the destruction of the honeycomb structure of the wood chips as much as possible. An object of the present invention is to provide a production method and an organic substance decomposition auxiliary agent using the lignin-removed wood chip.

  The gist of the lignin-removed wood chip of the present invention is that the lignin contained in the wood chip is removed and bleached while the honeycomb structure of the wood chip is maintained.

  With this configuration, the lignin-removed wood chip has a large surface area to which the adherend adheres.

  The gist of the lignin-removed wood chip of the present invention is that it is impregnated with a wood vinegar solution.

  With this configuration, the lignin-removed wood chip is held in an acidic state.

  Further, the gist of the organic matter decomposition aid of the present invention is that it comprises the lignin-removed wood chip and an enzyme.

  With this configuration, the organic matter decomposition aid of the present invention has an aspect in which the organic matter is decomposed by the enzyme when mixed and stirred with organic matter such as garbage, so that it is easy to assimilate the microorganism. Proliferation will be encouraged. In addition, the grown microorganisms are likely to adhere to the lignin-removed wood chip. Moreover, the microorganisms once attached to the lignin-removed wood chip are difficult to drop off from the lignin-removed wood chip, and it is difficult to lose its activity. In addition, microorganisms attached to the lignin-removed wood chip are likely to grow in the lignin-removed wood chip.

  Further, the gist of the organic matter decomposition aid of the present invention is that the enzyme is one or more enzymes selected from the group of lipase, protease, and amylase.

  With this configuration, the organic matter decomposition auxiliary agent of the present invention can quickly change the organic matter such as garbage in a mode in which microorganisms are easily assimilated.

  In addition, the gist of the organic matter decomposition aid of the present invention is that it further comprises activated carbon.

  With such a configuration, in the initial stage of mixing the organic matter decomposition auxiliary agent of the present invention with garbage etc. and biodegrading the garbage, the odor emitted from the garbage etc. is adsorbed by the activated carbon.

  Moreover, the gist of the garbage disposal method of the present invention is to mix and stir the organic matter decomposition aid and garbage.

  Further, the gist of the manure treatment method of the present invention is to mix and stir the organic matter decomposition aid and manure.

  With this configuration, organic matter such as garbage and manure is decomposed into water and carbon dioxide.

  The gist of the method for producing a lignin-removed wood chip of the present invention is to treat a wood chip obtained by pulverizing wood with an alkali solution to obtain an alkali-treated wood chip, and to pass the alkali-treated wood chip. The present invention includes a step of treating with hydrogen oxide water to form a hydrogen peroxide-treated wood chip and a step of washing the hydrogen peroxide-treated wood chip with water to obtain a washed wood chip.

  With this configuration, most of the lignin contained in the wood chip is removed from the wood chip obtained by pulverizing the wood.

  Moreover, the gist of the method for producing a lignin-removed wood chip of the present invention is that the step of obtaining the alkali-treated wood chip is performed by immersing the wood chip in soap-soda ash mixed water at 85 to 95 ° C. There is to be.

  Further, the gist of the method for producing a lignin-removed wood chip of the present invention is that the step of producing the hydrogen peroxide-treated wood chip comprises immersing the alkali-treated wood chip in hydrogen peroxide water at 85 to 95 ° C. Is to be done.

  Moreover, the place made into the summary of the manufacturing method of the lignin removal wood chip | tip of this invention is the process made into the said hydrogen peroxide treatment wood chip | tip immersed the said alkali treatment wood chip | tip in the hydrogen peroxide water under 85-95 degreeC. Thereafter, the heating of the hydrogen peroxide solution is stopped, and it is further immersed in the hydrogen peroxide solution for 5 to 15 hours.

  With this configuration, lignin removal from the wood chip is more effectively performed.

  Further, the gist of the method for producing a lignin-removed wood chip of the present invention includes a step of containing the wood chip in a water-containing container, and the step of obtaining the alkali-treated wood chip, hydrogen peroxide-treated wood chip And / or the step of making water-washed wood chips is performed by immersing the container in which the object to be processed is stored in a liquid.

  With this configuration, the wood chip can be treated with an alkaline solution or a hydrogen peroxide solution by immersing the container itself in the alkali solution or the hydrogen peroxide solution.

  Further, the gist of the lignin-removed wood chip manufacturing apparatus of the present invention includes a tank, a liquid feed pump that can be switched in the forward and reverse directions, a pipe that is erected in the tank and that has an open upper end. A cylindrical lid member connected to the upper end of the pipe and having a through-hole on the side wall, and passing through the bottom of the tank, and connecting the lower end of the pipe and one liquid delivery port of the pump One flow path, another flow path connecting the inside of the tank and the other liquid delivery port of the pump, and a water-permeable partition that vertically divides a space around the pipe in the tank. And a heating means for heating the liquid stored in the tank, and a water-permeable container in which wood chips obtained by pulverizing wood are accommodated in a space partitioned by the partition is used. It is to be done.

  With such a configuration, lignin is suitably removed from the wood chip while suppressing the destruction of the honeycomb structure of the wood chip as much as possible.

  In the lignin-removed wood chip of the present invention, the lignin is removed from the wood chip while the honeycomb structure of the wood chip is held, so that the surface area to which the adherend adheres is large. For this reason, when the lignin-removed wood chip of this invention is mixed with garbage etc. as an organic substance decomposition | disassembly auxiliary agent, more microorganisms which decompose organic substance can be made to adhere. In addition, since the lignin-removed wood chip of the present invention is bleached, when the lignin-removed wood chip of the present invention is used as a contact filter medium for water purification, more suspended matter contained in water is removed. In addition, it is possible to prevent the water in the lignin-removed wood chip from being contained in the filtered water.

  In addition, the lignin-removed wood chip of the present invention is configured to be impregnated with wood vinegar so that the lignin-removed wood chip is kept acidic, so even if the lignin-removed wood chip is stored for a long period of time, It is possible to prevent spoilage bacteria from growing in the lignin-removed wood chip.

  In addition, the organic matter decomposition aid of the present invention increases the biodegradation rate of organic matter because the lignin-removed wood chip can be a culture bed for microorganisms that degrade organic matter and promote the growth of microorganisms that degrade organic matter. be able to. Moreover, the biodegradability of organic matter can be increased.

  In addition, the organic matter decomposition auxiliary agent of the present invention comprises activated carbon, so that when it is mixed and stirred with organic matter such as garbage, microorganisms capable of decomposing such organic matter are organic matter decomposition aid and organic matter. It is possible to prevent the generation of off-flavors before they are sufficiently grown in the mixture.

  Moreover, since the organic substance decomposition | disassembly auxiliary agent of this invention can decompose | disassemble and eliminate organic substances, such as garbage and manure, to water and a carbon dioxide, it can prevent that an unnecessary organic substance accumulate | stores.

  The method for producing lignin-removed wood chips of the present invention can efficiently remove most of the lignin contained in the wood chips obtained by pulverizing wood from the wood chips, so that the surface area on which microorganisms can adhere is large. It can be a wood chip.

  In addition, the method for producing a lignin-removed wood chip of the present invention comprises the steps of treating a wood chip with an alkaline solution or treating with a hydrogen peroxide solution between the wood chips held in the container, with an alkaline solution or a hydrogen peroxide solution. Therefore, the wood chips can be prevented from colliding with each other and the honeycomb structure of the wood chips being destroyed. The lignin-removed wood chip that maintains the honeycomb structure can preferably act as a microorganism culture bed.

  Further, by processing the wood chips using the lignin-removed wood chip manufacturing apparatus of the present invention, it is possible to effectively remove lignin contained in the wood while maintaining the honeycomb structure of the wood. Therefore, a lignin-removed wood chip that is more suitable for an organic matter decomposition aid can be obtained.

  The lignin-removed wood chip and the method for producing such lignin-removed wood chip according to the present invention will be described in detail below.

  The lignin-removed wood chip obtained by removing the lignin contained in the wood chip and being bleached while retaining the honeycomb structure of the wood chip according to the present invention includes alcohol, dioxane, acetone, chloroform, pyridine. After immersing wood chips in a solvent capable of dissolving lignin, removing lignin from the wood chips, and soaking the treated wood chips in a solution in which an oxidizing bleaching agent or a reducing bleaching agent is dissolved. However, it is particularly preferable to obtain the lignin-removed wood chip as described below.

  That is, the method for producing a lignin-removed wood chip of the present invention comprises a step of treating a wood chip with an alkali solution by immersing the wood chip in an alkaline solution to obtain an alkali-treated wood chip, and an alkali-treated wood chip. A step of treating with hydrogen peroxide by dipping in hydrogen oxide water to form a hydrogen peroxide-treated wood chip, and a step of immersing the hydrogen peroxide-treated wood chip in water and washing with water to obtain a water-washed wood chip And a process.

  In the present invention, the method for immersing the wood chips in the alkali solution or hydrogen peroxide solution is not particularly limited, and the wood chips themselves may be poured into the alkali solution or hydrogen peroxide solution. The method for producing a lignin-removed wood chip according to the invention comprises a step of enclosing the wood chip in a container comprising a bag having a mesh that does not allow the wood chip to pass through. It is preferable to immerse in an alkaline solution or hydrogen peroxide solution. With this configuration, it is prevented that wood chips collide with each other in an alkaline solution or hydrogen peroxide water, and the honeycomb structure of the wood chips is prevented from being destroyed, so that the surface area to which microorganisms can adhere is increased. Lignin-removed wood chips can be obtained.

  The wood chip used in the present invention may be obtained from any wood as long as it has a sufficient honeycomb structure. Specifically, it is a wood generally used as wood, such as cedar, cypress and pine. Although it may exist, it is preferable to be comprised from a cedar. With this configuration, it is possible to save time and effort for removing spear and the like from the wood, and to reduce manufacturing costs. In recent years, Japanese cedar that has been neglected without being thinned in Japan can be effectively used.

  The outer diameter of the wood chip used in the present invention is not particularly limited as long as lignin can be efficiently removed from the wood chip, but is preferably 1 to 20 mm, and preferably 5 to 10 mm. Is more preferable. Such a configuration not only facilitates removal of lignin from the wood chips, but also facilitates handling of the wood chips and lignin-removed wood chips. When the outer diameter is smaller than 1 mm, the lignin-removed wood chip itself is quickly degraded by microorganisms and disappears, so that the function of the microorganism as a culture bed may not be sufficiently achieved. In addition, when the outer diameter is larger than 20 mm, not only is it difficult to remove lignin from the wood chips, but the lignin-removed wood chips cannot be sufficiently mixed and stirred with organic matter such as garbage. In addition, the decomposition rate of organic substances may be slowed.

  The alkali solution used in the step of obtaining the alkali-treated wood chip of the present invention is not particularly limited. Specifically, a caustic soda solution, a mixed solution of sodium sulfite and bicarbonate, a soap solution, soda ash Although a solution etc. can be mentioned, it is preferable that it is mixed water of soap and soda ash, and it is more preferable that it is mixed water of alkali soap and soda ash.

  The step of making the alkali-treated wood chip of the present invention may be performed in any manner as long as the wood chip can be treated with an alkaline solution while preventing the wood chip from becoming fibrous. It is preferable to immerse the container itself in which the wood chips are contained in 1 to 5 hours in an alkaline soap-soda ash mixed water of 85 to 95 ° C and a concentration of 0.05 to 5%, 90 to 95 ° C, It is more preferable to carry out by immersing the container in which the wood chips are encapsulated in an alkali soap-soda ash mixed water having a concentration of 0.1-1% for 1 to 3 hours. With this configuration, the wood chips are prevented from becoming fibrous, and the wood chip is more efficiently subjected to alkali treatment while maintaining the honeycomb structure of the wood chips.

  If the concentration of the alkaline soap-soda ash mixed water is less than 0.05%, the wood chips cannot be sufficiently treated. In addition, when the concentration is higher than 5%, the wood chip may be fibrous. In addition, it is preferable that the mixing ratio of alkali soap and soda ash is 1: 1 to 1: 2 (weight ratio). When the temperature of the alkaline soap-soda ash mixed water is lower than 85 ° C., it takes a lot of time for the alkali treatment of the wood chips, and thus the production cost increases. Even if the temperature is higher than 95 ° C., the effect on the left cannot be obtained as compared with the case where the temperature is lower than 95 ° C.

  The step of making the hydrogen peroxide-treated wood chips of the present invention may be carried out in any manner as long as the alkali-treated wood chips can be bleached, but in a hydrogen peroxide solution having a concentration of 1 to 10% at 85 to 95 ° C. It is preferable that the container itself containing the alkali-treated wood chips is immersed for 3 to 7 hours, and the alkali-treated wood chips are contained in hydrogen peroxide water having a concentration of 1 to 5% at 90 to 95 ° C. More preferably, the container is immersed for 3 to 5 hours. With this configuration, bleaching of the alkali-treated wood chips is performed more efficiently while maintaining the honeycomb structure of the (alkali-treated) wood chips.

  When the concentration of the hydrogen peroxide solution is less than 1%, the alkali-treated wood chip cannot be sufficiently treated. Further, even if the concentration is higher than 10%, the effect on the left cannot be obtained as compared with the case where the concentration is 10%. When the temperature of the hydrogen peroxide solution is lower than 85 ° C., it takes a lot of time for the hydrogen peroxide treatment of the alkali-treated wood chip, which increases the manufacturing cost. Even if the temperature is higher than 95 ° C., the effect on the left cannot be obtained as compared with the case where the temperature is lower than 95 ° C.

  In addition, it is preferable that sodium silicate having a concentration of 0.5 to 5% is dissolved in the hydrogen peroxide solution as a hydrogen peroxide stabilizer.

  The step of making the hydrogen peroxide-treated wood chip of the present invention involves immersing the container containing the alkali-treated wood chip in a hydrogen peroxide solution having a concentration of 1 to 10% at 85 to 95 ° C. for 3 to 7 hours. After performing, it is preferable to include a step of stopping the heating of the hydrogen peroxide solution and immersing the container containing the alkali-treated wood chips in the hydrogen peroxide solution for another 5 to 15 hours. . With this configuration, the alkali-treated wood chip can be more fully treated with hydrogen peroxide.

  Specifically, the step of making the water-washed wood chip of the present invention may be performed by immersing a bag containing the alkali-treated wood chip in water at room temperature.

  In the present invention, the step of treating wood chips with an alkali solution, the step of treating with hydrogen peroxide, or the step of washing with water is carried out by using wood chips, alkali-treated wood chips or hydrogen peroxide in an alkaline solution, hydrogen peroxide solution or water. After immersing and fixing the container in which the treated wood chips are enclosed, the alkali solution, hydrogen peroxide solution, and water are agitated, and an alkali solution is placed between the wood chips, the alkali treated wood chips, and the hydrogen peroxide treated wood chips. It is preferable that the solution, hydrogen peroxide solution or water be circulated. According to this aspect, not only lignin is efficiently removed from the wood chips, but also wood chips, alkali-treated wood chips, and hydrogen peroxide-treated wood during the alkali treatment step, the hydrogen peroxide treatment step, or the water washing step. It is possible to suppress as much as possible that the chips collide and the honeycomb structure of the wood chip is destroyed.

  In addition, the manufacturing method of the said lignin removal wood chip can be more preferably performed using the apparatus 10 as shown in FIG. That is, the apparatus 10 includes a tank 12, a liquid feed pump 18 capable of switching the liquid feed through the liquid feed ports 14 and 16 in the forward and reverse directions, a pipe 20 installed in the tank 12, and a pipe. 20, a cylindrical lid member 22 connected to the upper end of the tank 20, a passage 24 that penetrates the bottom of the tank 12, connects the lower end of the pipe 20 and the one liquid delivery port 14, Another flow path 26 that connects the other liquid delivery port 16 of the pump 18, a water-permeable partition plate 28 that divides the space around the pipe 20 up and down in the tank 12, and the tank 12 A steam supply pipe 30 for sending steam to the liquid and a lid that can be opened and closed are configured.

  In the apparatus 10 of the present invention, the pipe 20 is configured by connecting pipe units 32 having flanges 34 at both ends. The cylindrical lid member 22 is configured such that one end is closed, a plurality of through holes 36 are provided on the side wall, and a flange 35 is provided on the other end, and is connected to the upper end of the pipe 20 via the flange 35. The water-permeable partition plate 28 is held in the tank 12 in the following manner. That is, in the water-permeable partition plate 28, the joint portion where the partition plate 28 and the side wall of the pipe 20 are joined has the flange 34 at the lower end of the upper pipe unit 32 and the lower stage in the pipe unit 32 adjacent vertically. The pipe unit 32 is sandwiched between the upper end flange 34 or the uppermost pipe unit 32 and the flange 35 of the lid member 22. Further, the joint portion where the partition plate 28 and the inner wall of the tank 12 are joined is locked by a locking portion 38 provided on the inner wall of the tank 12.

  The liquid feed pump 18 provided in the apparatus 10 of the present invention sometimes sucks the liquid stored in the tank 12 from one liquid feed port 14 and discharges it from the other liquid feed port 16, and sometimes other liquids. Since it can be inhaled from the feed port 16 and discharged from the one liquid feed port 14, the liquid in the tank 12 can be convected even if the insoluble material to be treated is fixed in the tank 12 and immersed in the liquid. Can do. As a result, even when the container 44 containing the wood chips is stored in the tank 12, the liquid passes between the wood chips in the container 44. Therefore, by performing the lignin-removed wood chip manufacturing method of the present invention with the apparatus 10, the lignin-removed wood in which the destruction of the honeycomb structure of the wood chip is suppressed as much as possible while the lignin contained in the wood chip is removed. A chip can be obtained.

  By providing a cylindrical lid member 22 on the pipe 20 provided in the apparatus 10 of the present invention, the liquid heated in the pipe 20 by the steam sent out from the steam supply pipe 30 is caused to pass through the through hole 36 by the action of the pump 18. Therefore, the liquid is uniformly supplied to the tank 12 and the liquid in the tank 12 can be circulated and heated efficiently.

  In the apparatus 10 of the present invention, the method of heating the liquid in the tank 12 is preferably performed by supplying steam into the liquid through the steam supply pipe 30 while adjusting with the valve 40 from the viewpoint of cost. If it can heat, it will not specifically limit. Therefore, the heating means provided in the apparatus 10 of the present invention is not limited to an embodiment in which steam is supplied through the steam supply pipe 20, and may be configured by a conventionally known heating apparatus such as an electric heater. Good.

  In the wood chip lignin removal method for producing wood chips using the apparatus 10 of the present invention, the container 44 composed of a mesh bag containing lignin is housed in a space partitioned by the partition plates 28. It is preferable to do so. According to this aspect, since the container 44 is fixed between the partition plates 28, the container 44 floats in the liquid due to the convection of the liquid in the tank 12, and the containers 44 collide with each other to be accommodated. The destruction of the honeycomb structure of the wood chip in the body 44 can be prevented as much as possible. Note that it is preferable to store the container 44 in a space partitioned by the lowermost partition plate 28 and the bottom of the tank 12 because the container 44 may prevent the opening of the other flow path 26. Absent. Further, when the container 44 is placed on the uppermost partition plate 28, the container 44 floats in the liquid, and the honeycomb structure of the wood chip may be collapsed.

  When the liquid is circulated in the tank 12, the partition plate 28 included in the apparatus 10 of the present invention is blown up by the liquid discharged from the other liquid feed ports 16, and the partition plate 28 is damaged. In order to prevent this, it is preferable that the pipe 20 is held in the tank 12 in the above-described manner. However, the pipe 20 is composed of a single cylinder having fixing means for fixing the partition plate 28 to the side wall, and the fixing means is used. The partition plate 28 may be held in the tank 12.

  In the apparatus 10 of the present invention, when the container 44 is not placed on the uppermost partition plate 28, when the liquid is discharged from the other liquid feed port 16 in the tank 12, the uppermost partition is formed. The board 28 may be blown up. For this reason, in the apparatus 10 of the present invention, the uppermost partition plate 28 is preferably pressed using a lid 42 via a pressing member (not shown).

  As mentioned above, although the embodiment of the manufacturing method of the lignin removal wood chip of this invention was explained in full detail, this invention is not limited to the above-mentioned embodiment, It can implement also in another aspect.

  In the present invention, the container for storing the wood chips can prevent the wood chips from easily passing outside the container after the wood chips are stored, while the alkaline solution and the hydrogen peroxide solution are not used. Any configuration may be used as long as it can easily pass through the container. Therefore, this container is not limited to the aspect comprised from a mesh-shaped bag, The rigid container comprised provided with the grid | lattice-like outer surface may be sufficient.

  The step of making the hydrogen peroxide-treated wood chip of the present invention includes an aspect in which the alkali-treated wood chip is taken out from the alkaline solution and immersed in hydrogen peroxide water after the step of making the alkali-treated wood chip, or the alkali treatment After the step of making wood chips, the alkali solution is discharged, and then hydrogen peroxide water is poured into it, so that the alkali-treated wood chips are immersed in hydrogen peroxide water, as well as alkali-treated wood chips. After the step, a mode in which a desired amount of hydrogen peroxide is further added and dissolved in this alkaline solution may be used. With this configuration, it is possible to reduce the amount of water required for manufacturing the lignin-removed wood chip, so that the manufacturing cost of the lignin-removed wood chip can be kept low.

  In the step of obtaining the hydrogen peroxide-treated wood chip of the present invention, the container containing the alkali-treated wood chip is immersed in hydrogen peroxide water having a concentration of 1 to 10% at 85 to 95 ° C. for 3 to 7 hours. After the heating, the heating of the hydrogen peroxide solution is stopped, and the step of immersing the container containing the alkali-treated wood chips in the hydrogen peroxide solution for another 5 to 15 hours is performed by heating the hydrogen peroxide solution. It is preferable to circulate hydrogen peroxide water for 1 to 4 hours after stopping. With this configuration, the alkali-treated wood chip can be more fully treated with hydrogen peroxide.

  The method for producing a lignin-removed wood chip of the present invention may further comprise a step of dehydrating the washed wood chip after the step of making the washed wood chip. With this configuration, handling of the resulting lignin-removed wood chip will be excellent.

  Next, the organic substance decomposition adjuvant according to the present invention will be described in detail below.

  The organic matter decomposition auxiliary agent of the present invention comprises the lignin-removed wood chip manufactured in the above embodiment and an enzyme.

  The enzyme according to the present invention is preferably configured to include a proteolytic enzyme, a lipolytic enzyme, and an amylolytic enzyme, and is more preferably one or a plurality of enzymes selected from the group of lipase, protease, and amylase. Preferably, it is further comprised from the enzyme group of lipase: protease: amylase = 1: 1: 1. With this configuration, the organic matter decomposition auxiliary agent of the present invention can quickly decompose organic matter when mixed with organic matter such as garbage, and change the organic matter into a mode in which microorganisms are easily assimilated. As a result, the organic matter decomposition aid of the present invention can increase the biodegradation rate of organic matter.

  The enzyme of the present invention is preferably blended in an amount of 0.05 to 5% by weight, more preferably 0.05 to 1% by weight, based on the lignin-removed wood chip. When the blending ratio is less than 0.05% by weight, it takes a long time to decompose the organic substance to an aspect in which microorganisms are easily assimilated. On the other hand, if it is higher than 5% by weight, the production cost of the organic matter decomposition aid of the present invention will increase.

  The organic matter decomposition auxiliary agent of the present invention may further be constituted by impregnating a lignin-removed wood chip with a wood vinegar solution. With this configuration, the organic matter decomposition aid is kept acidic, and therefore, it is difficult for bacteria to grow in the lignin-removed wood chip even if the organic matter decomposition aid is stored for a long time. For this reason, even if the organic substance decomposition | disassembly adjuvant of this invention is mixed and stirred with organic substances, such as a garbage, after long-term storage, it can start biodegradation of organic substances rapidly.

  The wood vinegar of the present invention is preferably blended in an amount of 0.05 to 5% by weight, more preferably 0.05 to 1% by weight, based on the lignin-removed wood chips. If the blending ratio is less than 0.05% by weight, it is not possible to sufficiently suppress the growth of various bacteria on the organic substance decomposition aid. On the other hand, when the content is higher than 5% by weight, when such an organic matter decomposition auxiliary agent is mixed with an organic matter, it suppresses the growth of microorganisms that decompose the organic matter, which may hinder the biodegradation of the organic matter. is there.

  The organic matter decomposition aid of the present invention may further comprise activated carbon. With this configuration, the organic matter decomposition auxiliary agent of the present invention is mixed with raw garbage and the like before the microorganisms that decompose the organic matter decomposition agent in the mixture of the organic matter decomposition auxiliary agent and raw garbage sufficiently grow. The odor emitted from garbage etc. will be adsorbed by the activated carbon. For this reason, the organic matter decomposition auxiliary agent of the present invention can prevent the generation of off-flavors even in the initial stage of biodegrading garbage and the like.

  The activated carbon used in the organic matter decomposition auxiliary agent of the present invention may be any embodiment as long as it can adsorb the off-flavor emitted from garbage and the like, and specific examples include charcoal and bamboo charcoal. These are all preferably in the form of powder. With this configuration, the organic matter decomposition auxiliary agent of the present invention can be easily mixed and stirred with garbage or the like. Moreover, since the surface area of activated carbon becomes large, it will be excellent in the deodorizing effect.

  The activated carbon of the present invention is preferably blended in an amount of 0.005 to 0.1% by weight, and preferably 0.01 to 0.02% by weight, based on the lignin-removed wood chip. When the amount is less than 0.005% by weight, a sufficient deodorizing effect cannot be expected for the organic matter decomposition aid of the present invention. In addition, when the amount is more than 0.1% by weight, when the organic matter decomposition aid of the present invention and garbage are mixed, the powdered activated carbon absorbs moisture in the garbage, and the organic matter The enzyme activity in the decomposition aid may be inhibited.

  As mentioned above, although the embodiment of the organic substance decomposition auxiliary agent of the present invention has been described in detail, the present invention is not limited to the above-described embodiment, and can be implemented in other modes.

  The organic matter decomposition aid of the present invention is not limited to an embodiment configured to contain a wood vinegar solution, as long as the pH can be kept acidic, and is configured to contain bamboo vinegar solution or acetic acid. Also good.

  The organic matter decomposition aid of the present invention may further comprise a microorganism capable of decomposing organic matter such as garbage. With this configuration, decomposition of organic matter such as garbage can be started more quickly.

  The lignin-removed wood chip of the present invention is constituted by removing most of the lignin contained in the wood chip while retaining the honeycomb structure of the wood chip, so that the microorganisms attached to the surface are less likely to fall off, Loss of microbial activity can be prevented. Therefore, the lignin-removed wood chip of the present invention preferably acts as a culture bed for microorganisms. For this reason, the organic matter decomposition aid of the present invention is used by mixing and / or stirring with organic matter such as garbage and manure, so that the mixture of organic matter decomposition aid and organic matter is mixed with garbage and manure. Microorganisms to be decomposed grow in large quantities through the lignin-removed wood chip, and it becomes possible to completely decompose garbage and manure to water and carbon dioxide. As a result, there is no accumulation of decomposition products after biodegradation of garbage and the like.

  In addition, the present invention can be carried out in a mode in which various improvements, modifications, and variations are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

The present invention will be described below based on examples, but the present invention is not limited to these examples.
Example 1

(Manufacture of lignin-removed wood chips)
The dried cedar material was pulverized to obtain a cedar wood chip having an outer diameter of 3 to 10 mm, and the cedar wood chip was sealed in a resin bag having a mesh-like outer surface and a volume of 30 l. Next, 50 such bags were housed in two middle layers in a tank with a capacity of 1500 l, the interior of which was partitioned into four layers on the upper and lower sides by a water-permeable partition plate (snowboard). Next, 2 kg of alkaline soap (manufactured by Kyoeisha Chemical Co., Ltd.) and 3 kg of soda ash (manufactured by Central Chemical Co., Ltd.) are dissolved in the soap-soda ash mixed water and poured into the tank. -Filled with soda ash mixed water. Next, the cedar wood chips were treated with the soap-soda ash mixed water while stirring the soap-soda ash mixed water in the tank at 90-95 ° C. for 2-3 hours.

  Next, after discharging soap-soda ash mixed water from the tank, 40 kg of hydrogen peroxide (Mitsubishi Chemical Corporation) and 20 kg of sodium silicate (Toso Sangyo Co., Ltd.) are dissolved. The hydrogen peroxide solution prepared in this manner was poured into the tank, and the tank was filled with the hydrogen peroxide solution. Next, the soap-treated cedar wood chips were treated with the hydrogen peroxide solution while stirring the hydrogen peroxide solution in the tank at 90 to 95 ° C. for 3 to 4 hours. Thereafter, the heating of the hydrogen peroxide solution was stopped, and the hydrogen peroxide solution was immersed for another 2 to 4 hours while stirring. Thereafter, the stirring was also stopped and left as it was overnight (5 to 15 hours).

  Next, after discharging the hydrogen peroxide solution from the tank, water was poured into the tank, and the tank was filled with water. Next, the hydrogen peroxide-treated cedar chip was washed while stirring water in the tank at room temperature. Thereafter, water was discharged from the tank to obtain water-washed cedar chips.

Next, the washed cedar chip was dehydrated to obtain a lignin-removed cedar chip according to the present invention.
(Example 2)

In Example 1, after treating the cedar wood chips with the soap-soda ash mixed water, 40 kg of hydrogen peroxide and 40 kg of hydrogen peroxide were added to the soap-soda ash mixed water without discharging the soap-soda ash mixed water from the tank. A lignin-removed cedar chip according to the present invention was obtained in the same manner as in Example 1 except that 20 kg of sodium silicate was added and dissolved, and the soap-treated cedar chip was treated with hydrogen peroxide.
Example 3

(Manufacture of organic substance decomposition aids)
100: 0.1: 0.1: The lignin-removed cedar chip obtained in Example 1, the lipase: protease: amylase = 1: 1: 1 total enzyme, pyroligneous acid, and powdered charcoal. It mixed by 0.01 (weight ratio) and the organic substance decomposition | disassembly adjuvant concerning this invention was obtained.
Example 4

The organic substance decomposition | disassembly adjuvant concerning this invention was obtained like Example 3 except having used the lignin removal cedar agent chip | tip obtained in Example 2. FIG.
(Example 5)

（実施例６） Into a garbage disposal machine (BM-A140, Fujiwa Sangyo Co., Ltd.), 30 l of the organic matter decomposition auxiliary agent obtained in Example 3 and 200 g of garbage (one piece of raw horse mackerel) are charged, and then the garbage is disposed. The mixture was stirred for 20 hours at 36 ° C. in the processor, and the state of biodegradation treatment of the garbage was observed. The results are shown in Table 1.

(Example 6)

The garbage was biodegraded in the same manner as in Example 5 except that the organic substance decomposition auxiliary agent obtained in Example 4 was used, and the state was observed. The results are shown in Table 1.
(Comparative Example 1)

  100 cedar wood chips having an outer diameter of 3 to 10 mm, lipase: protease: amylase = 1: 1: 1 total enzyme, wood vinegar, and powdered charcoal obtained by pulverizing dried cedar wood : 0.1: 0.1: 0.01 (weight ratio) to obtain an organic matter decomposition aid.

  Into a garbage disposal machine (BM-A140, Fujiwa Sangyo Co., Ltd.), 30 l of the organic matter decomposition auxiliary agent obtained in Comparative Example 1 and 200 g of garbage (one green horse mackerel) are charged, and the garbage is treated. The mixture was stirred for 20 hours at 36 ° C. in the machine, and the state of biodegradation treatment of the garbage was observed. The results are shown in Table 1.

  From a comparison between Example 1 and Example 2, it was found that the degree of bleaching of the resulting lignin-removed cedar chip was more advanced in Example 1. Therefore, it was found that when the lignin-removed wood chip according to the present invention is used for purification of drinking water or the like, it is preferable to produce the lignin-removed wood chip in the manner of Example 1.

  From comparison with Examples 3 and 4, it was found that the lignin-removed wood chip according to the present invention was not different from the left in the biodegradation rate and biodegradability of garbage.

  From comparison between Examples 3 and 4 and Comparative Example 1, it was found that the organic substance decomposition auxiliary agent according to the present invention can promote biodegradation of garbage more effectively. It was also found that the garbage can be almost completely extinguished.

The one aspect | mode of the manufacturing apparatus of the lignin removal wood chip used for the lignin removal manufacturing method of this invention is shown.

Explanation of symbols

10: Device 12: Tank 14: One liquid feed port 16: Other liquid feed port 18: Liquid feed pump 20: Pipe 22: Lid member 24: Channel 26: Other channel 28: Partition plate 30: Steam supply Pipe 32: Pipe unit 34, 35: Flange 36: Through hole 38: Locking portion 40: Valve 42: Lid 44: Container

Claims (13)

A lignin-removed wood chip, in which the lignin contained in the wood chip is removed and bleached while retaining the honeycomb structure of the wood chip. The lignin-removed wood chip according to claim 1, impregnated with wood vinegar. The organic substance decomposition | disassembly auxiliary agent comprised including the lignin removal wood chip of Claim 1 or 2, and an enzyme. The organic substance decomposition adjuvant according to claim 3, wherein the enzyme is one or more enzymes selected from the group consisting of lipase, protease, and amylase. Furthermore, the organic substance decomposition | disassembly adjuvant of Claim 3 or 4 comprised including activated carbon. A method for treating garbage, comprising mixing and stirring the organic matter decomposition aid according to any one of claims 3 to 5 and garbage. An excrement processing method which mixes and stirs the organic matter decomposition auxiliary agent according to any one of claims 3 to 5 and excrement. Processing wood chips obtained by crushing wood with an alkali solution to obtain alkali-treated wood chips;
Treating the alkali-treated wood chips with hydrogen peroxide water to form hydrogen peroxide-treated wood chips;
A method for producing a lignin-removed wood chip, comprising a step of washing the hydrogen peroxide-treated wood chip with water to form a water-washed wood chip. The method for producing a lignin-removed wood chip according to claim 8, wherein the step of obtaining the alkali-treated wood chip is performed by immersing the wood chip in soap-soda ash mixed water at 85 to 95 ° C. The method for producing a lignin-removed wood chip according to claim 8 or 9, wherein the step of obtaining the hydrogen peroxide-treated wood chip is performed by immersing the alkali-treated wood chip in a hydrogen peroxide solution at 85 to 95 ° C. In the step of obtaining the hydrogen peroxide treated wood chips, the alkali treated wood chips are immersed in hydrogen peroxide water at 85 to 95 ° C., and then the heating of the hydrogen peroxide water is stopped, and further for 5 to 15 hours. The method for producing a lignin-removed wood chip according to claim 8 or 9, wherein the method is performed by immersing in hydrogen oxide water. The step of containing the wood chip in a water-containing container, the step of obtaining the alkali-treated wood chip, the step of obtaining the hydrogen peroxide-treated wood chip, and / or the step of obtaining the water-washed wood chip, The method for producing a lignin-removed wood chip according to any one of claims 8 to 11, wherein the contained body is immersed in a liquid. A tank,
A liquid feed pump capable of switching between forward and reverse directions;
A pipe erected in the tank and having an open upper end;
A cylindrical lid member connected to the upper end of the pipe and provided with a through hole in the side wall;
One flow path that penetrates the bottom of the tank and connects the lower end of the pipe and one liquid delivery port of the pump;
Another flow path connecting the inside of the tank and the other liquid delivery port of the pump;
A water-permeable partition that vertically partitions the space around the pipe in the tank;
Heating means for heating the liquid stored in the tank, and the space partitioned by the partition is used by storing a water-permeable container in which wood chips obtained by pulverizing wood are stored. , Lignin removal wood chip manufacturing equipment.

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