Combined system of treatment and distribution of sludge-containing materials, and treatment and distribution method

Abstract

To provide a combined system for the treatment and distribution of sludge-containing materials, such as sludge water generated at plant facilities and construction sites, as well as a treatment and distribution method that enables efficient treatment and distribution of sludge-containing materials.SOLUTION: A combined system of treatment and distribution of sludge-containing materials, and a method of treatment and distribution, which consists of a receiving facility for sludge-containing materials collected from at least one plant facility and construction site, an intermediate facility with a storage facility for sludge-containing materials, a classification facility to classify sludge-containing materials according to their properties, and a reaction facility to react sludge-containing materials, and a shipping facility to ship supplies from the receiving facility and intermediate facility for different uses.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a combined system and method for the treatment and distribution of sludge-containing material. [Background technology]

[0002] Sludge water generated in various factories such as ready-mix concrete factories and factories manufacturing various products is generally disposed of at managed disposal sites after necessary treatment, since the sludge contained in it is treated as sludge, which is industrial waste, under the Waste Management and Public Cleansing Act. In addition, at various construction sites that handle concrete, such as building and road construction sites, surplus concrete is generated during construction, but these construction sites are unable to dispose of it. Therefore, it is usually returned to ready-mix concrete factories as residual concrete, where it is disposed of after necessary treatment.

[0003] However, in recent years, problems have arisen such as the difficulty of securing disposal sites and the soaring costs of disposal. Furthermore, interest in environmental protection and the effective use of resources is growing, and studies are being conducted on the reuse of sludge-containing materials in order to reduce waste and convert it into valuable materials (for example, Patent Documents 1 and 2). Patent Document 1 proposes a method of separating and recovering supernatant water from recovered sludge water. Patent Document 2 proposes a method of carbonating the sludge contained in ready-mix concrete sludge, using it as an adsorbent for carbon dioxide gas, and then reusing it as a cement admixture. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2011-072947 A [Patent Document 2] JP 2021-138574 A Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a composite system and a method for the treatment and distribution of sludge-containing material, which are capable of efficiently treating and distributing sludge-containing material, such as sludge water generated in factory facilities and construction sites. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides the following integrated system for treatment and distribution of sludge-containing material. 1. A receiving facility for sludge-containing material recovered from at least one industrial facility and construction site; Storage facilities for sludge-containing materials; A sorting facility for sorting the sludge according to its properties; and an intermediate facility having a reaction facility for carrying out a reaction of the sludge content; a shipping facility that ships the supplies from the receiving facility and the intermediate facility as products according to their intended use; A combined system for the treatment and distribution of sludge-containing material comprising:

[0007] The present invention further provides, as a preferred embodiment, the following integrated system for the treatment and distribution of sludge-containing material: 2. A complex system for processing and distributing sludge-containing material as described in claim 1, wherein the intermediate facility further includes an impurity removal facility for removing impurities contained in the sludge-containing material. 3. A composite system for treatment and distribution of sludge-containing material as described in claim 1, wherein the intermediate facility further comprises a solid-liquid separation device. 4. A complex system for processing and logistics of sludge-containing materials as described above in 1, in which the storage facility is provided with a plurality of storage containers, and the sludge-containing materials received at the receiving facility are classified by the classification facility into a plurality of sludge-containing material groups, each of which is stored in a separate storage container. 5. A complex system for processing and logistics of sludge-containing material as described in 1 above, comprising at least one of a receiving transport means for collecting the sludge-containing material from the at least one factory facility and construction site and transporting it to the receiving facility, and a shipping transport means for transporting the product shipped from the shipping facility to a destination. 6. A complex system for processing and logistics of sludge-containing materials as described in 5 above, in which the receiving transport means and the shipping transport means are operated by a single means, which transports the product shipped from the shipping facility to the supply destination, and transports at least one of the sludge-containing materials and the gas used in the reaction from the at least one factory facility and construction site. 7. A complex system for processing and distributing sludge-containing material as described in 1 above, wherein the product in the shipping facility is used for at least one application selected from the group consisting of raw materials for carbonates, cement, solidification materials, paper, resins and rubber, and materials for concrete, mortar and asphalt. 8. A complex system for the treatment and distribution of sludge-containing material as described in 1 above, wherein the property of the sludge-containing material is at least one property selected from the sludge concentration in the sludge-containing material, the type of impurities, and the calcium content.

[0008] The present invention also provides a method for treating and distributing sludge-containing material, comprising: 9. Receiving sludge-containing material collected from at least one factory facility and construction site at a receiving facility, shipping the product at a shipping facility, and the following (i) to (vi); (i) Storage in a storage facility (ii) Classifying the sludge in a sorting facility according to the nature of its contents. (iii) Carrying out a reaction in a reaction facility (iv) Removing impurities using impurity removal equipment (v) Separating solid and liquid using a solid-liquid separator (vi) supplying such shipping facility; and carrying out at least one of the following treatments and reactions: A method for treating and distributing sludge-containing material, wherein the shipping facility is a facility for shipping products obtained by carrying out the treatment and reaction according to their intended use.

[0009] The present invention further provides, as preferred embodiments, the following methods for treating and transporting sludge-containing material: 10. A method for treating and transporting sludge-containing material as described in claim 9, wherein the sludge-containing material stored by storing as described in (i) is a sludge-containing material classified by classifying the sludge-containing material received at the receiving facility by classifying as described in (ii). 11. A method for treating and distributing sludge-containing material according to the above item 10, in which any one of the following (a) to (c) is selected for the sludge-containing material stored by storing the sludge-containing material according to the above item (i). (a) The stored sludge-containing material is treated as a product and shipped from the shipping facility. (b) The stored sludge-containing material is subjected to solid-liquid separation by the above (v), and at least one of the resulting solid and liquid is made into a product and shipped from the above shipping facility. (c) According to (iii) above, the stored sludge-containing material is reacted with gas to produce a reaction product, which is then shipped from the shipping facility. Effect of the Invention

[0010] According to the present invention, it is possible to provide a composite system and a method for the treatment and distribution of sludge-containing material, which can efficiently treat and distribute sludge-containing material such as sludge water generated in factory facilities and construction sites. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a flow diagram showing a preferred embodiment of a combined system for processing and distributing sludge-containing material according to the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention (hereinafter, sometimes referred to as "the present embodiment") will be described. The present invention is not limited to the following embodiment, and can be modified as desired within the scope that does not impair the effects of the invention.

[0013] [Comprehensive system for the treatment and distribution of sludge-containing materials] The composite system for processing and distributing sludge-containing materials of this embodiment includes: a receiving facility for sludge-containing material recovered from at least one plant facility and construction site; Storage facilities for sludge-containing materials; A sorting facility for sorting the sludge according to its properties; and an intermediate facility having a reaction facility for carrying out a reaction of the sludge content; and a shipping facility that ships the supplies from the receiving facility and the intermediate facility as products according to their intended use.

[0014] Among various factories such as ready-mix concrete factories, cement factories, and product manufacturing factories, there are large-scale factories that can independently carry out the methods described in the above patent documents, and small and medium-sized factories that cannot. In other words, there are factories that cannot independently handle the treatment of sludge-containing materials using the methods described in the above patent documents, and such factories always have problems with the treatment of sludge-containing materials. In addition, various construction sites such as building construction sites and road construction sites are temporary sites, so it is not realistic to independently carry out the methods described in the above patent documents.

[0015] Even if there is a factory or site of a size that can independently carry out the method described in the above patent document, it is difficult to constantly maintain a high operating rate due to the nature that the amount of sludge-containing matter such as sludge water generated is not constant. Furthermore, in contrast to the case where it is difficult to constantly maintain a high operating rate, in the case where the amount of sludge-containing matter such as sludge water generated increases, it is highly likely that the sludge-containing matter cannot be completely treated.

[0016] In this way, according to the techniques described in the above Patent Documents 1 and 2, it is possible to treat sludge-containing materials such as sludge water in various factories, etc. However, in consideration of the properties of the above sludge-containing materials and the conditions of various factories and construction sites, it is necessary to improve not only the treatment of the sludge-containing materials but also the overall system including the logistics of the sludge-containing materials.

[0017] As a result of focusing on the above phenomenon, the inventor of the present invention thought that the problem could be solved by accepting sludge-containing materials discharged from various factories, large and small, in one go, performing various treatments, etc., and distributing the materials. This is because if sludge-containing materials discharged from multiple factories are accepted in one go in this way, it becomes easier to maintain a uniform operation rate to a certain extent. In addition, by configuring the system to include a receiving facility that accepts sludge-containing materials collected from at least one factory facility and a construction site in one go, and a shipping facility that ships the sludge-containing materials accepted at the receiving facility and those that have been subjected to various treatments, etc., as products according to their intended use, the efficiency of distribution of the sludge-containing materials can be improved. By adopting intermediate facilities that have storage facilities, classification facilities, and reaction facilities with predetermined functions, the efficiency of the treatment of the sludge-containing materials can be improved. Since the storage facilities, classification facilities, and reaction facilities of the intermediate facilities can respond to various situations even with just one facility, it is fully possible to improve the efficiency of the treatment of the sludge-containing materials. In the system of this embodiment, by having these three facilities at the same time, it can respond to even more various situations, so the effect of improving the efficiency of the treatment of the sludge-containing materials is exceptional.

[0018] According to the system of this embodiment, by combining these facilities, namely the receiving facility and the shipping facility, and the intermediate facility having the storage facility, the classification facility and the reaction facility, in a complex configuration, it is possible to provide a complex system and a processing and distribution method for sludge-containing material, which can efficiently process and distribute the sludge-containing material.

[0019] Fig. 1 is a flow diagram showing a preferred embodiment of a composite system for treating and distributing sludge-containing material according to the present embodiment. The treatment and distribution system and treatment and distribution method according to the present embodiment will be described below, starting with each facility included in the system according to the present embodiment, with reference to the flow diagram in Fig. 1.

[0020] [Receiving facilities] The receiving facility is a facility that receives sludge-containing material recovered from at least one of a plant facility and a construction site.

[0021] Sludge-containing materials that can be accepted in the composite system for processing and distributing sludge-containing materials of this embodiment are not particularly limited as long as they contain sludge, and include leftover concrete, concrete washing wastewater, sludge (including sludge solids), sludge water, etc. (see JIS A5308:2019 (ready-mixed concrete)). For example, leftover concrete, concrete washing wastewater, sludge, sludge water containing the same, etc. generated in various factories such as ready-mix concrete factories, cement factories, and factories manufacturing various products can be included. In addition, the sludge may be either dry powder or wet powder. In addition, the supernatant water specified in JIS A5308:2019 (ready-mixed concrete) can also be included as a sludge-containing material. For example, residual concrete, concrete washing wastewater, sludge, sludge water, supernatant water, etc. generated in the concrete manufacturing process at these various factories can be accepted as sludge-containing materials as they are, or they can be accepted after being treated, such as by sieving, if necessary.

[0022] Examples include residual concrete, concrete washing wastewater, sludge, and sludge water that contains this, which are generated at various construction sites such as building construction and road construction sites that handle concrete. These residual concrete, concrete washing wastewater, sludge, sludge water, and supernatant water are included in sludge-containing materials, just like the sludge-containing materials generated at the various factories mentioned above.

[0023] More specifically, sludge-containing materials generated at various construction sites include unused remaining concrete, slurries obtained by adding water to the concrete, and materials containing fine powders such as cement obtained by separating coarse powders such as aggregate contained in the slurries, residues containing concrete generated after washing agitator trucks, and materials containing fine powders such as cement obtained by separating coarse particles such as aggregate from the residues, etc. Typical examples of construction sites include construction sites for condominiums and buildings, and dams, while examples of road construction sites include construction sites for general roads, forest roads, and highways.

[0024] The receiving facility is not particularly limited in type, so long as it can receive the sludge-containing material recovered from the above-mentioned factory facilities and construction sites, etc., and preferably can store it at least temporarily. For example, the type may be determined according to the properties of the sludge-containing material to be received (e.g., whether it is powdery or liquid) and the means of transporting the sludge-containing material (e.g., vehicles such as dump trucks and tanker trucks, railways, or ships such as bulk carriers).

[0025] A representative example of the equipment included in the receiving facility is a receiving container (e.g., a receiving pit) for receiving sludge-containing materials from various factory facilities and construction sites in one go. The system of this embodiment may have one receiving container as shown in Fig. 1, or may have multiple receiving containers for different types of sludge-containing materials or different means for transporting the sludge-containing materials.

[0026] As for the location of the receiving facility, for example, in case of handling vehicles such as dump trucks and tanker trucks, and land transport means such as railways, the receiving facility should be installed on land, and in case of handling sea transport means such as bulk ships, the receiving facility should be installed on the coast, in which case it is preferable to have a dedicated wharf.

[0027] [Intermediate facilities] The system of this embodiment has a storage facility, a classification facility, and a reaction facility as intermediate facilities. The intermediate facilities are facilities for treating and reacting sludge-containing materials, and are facilities for treating the sludge-containing materials received at the receiving facility so that they can be shipped as products. The storage facility will be described below.

[0028] (Storage facilities) The storage facility is a facility for storing sludge-containing material. The storage facility does not only simply store sludge-containing materials, but also allows adjustments such as temporary or long-term storage and preservation when the amount of sludge generated is large, and release of the sludge stored in the storage facility when the amount of sludge generated is small. In addition, adjustments can be made such as storage and preservation to select the necessary treatment according to the demand for each use, which changes from time to time. With such adjustments, it becomes possible to respond to changes in the amount of sludge-containing materials generated, such as sludge water generated at various factory facilities and construction sites, even though the amount of sludge-containing materials generated is not constant.

[0029] In the storage facility, the method for storing the sludge-containing material is not particularly limited as long as it is possible to store the sludge-containing material, and may be, for example, by using a storage container (which may be of any type, such as a pit type, a tank type, or a vessel type).

[0030] Examples of objects to be stored in the storage facility include, for example, sludge-containing material received at the receiving facility (hereinafter also referred to as "supply from the receiving facility") as shown in Fig. 1, sludge-containing material classified at the classification facility described below (hereinafter also referred to as "supply from the classification facility"), and sludge-containing material from which impurities have been removed at the impurity removal facility (hereinafter also referred to as "supply from the impurity removal facility"), as well as supplies from intermediate facilities. In the system of this embodiment, it is preferable to store the sludge-containing material classified at the classification facility (supply from the classification facility). As shown in Figure 1, the sludge-containing material (storage material) stored in the storage facility can be shipped as a product from the shipping facility, the reactants reacted in the reaction facility can be shipped as products from the shipping facility, and, if necessary, the material can be separated in the solid-liquid separation facility and shipped as a product from the shipping facility.

[0031] When the storage facility has the above-mentioned storage container, the storage container may be single or multiple, and multiple storage containers are preferable from the viewpoint of more efficient processing and distribution of the sludge-containing material. Furthermore, in the system of this embodiment, it is preferable that the storage facility has multiple storage containers, and the multiple sludge-containing material groups, which are obtained by classifying the sludge-containing material received at the receiving facility using the classification facility, are stored in one storage container for each sludge-containing material group. This makes it possible to manage the sludge-containing material to be subjected to reaction in the reaction facility, making it easier to carry out the reaction, and also makes it possible to make a decision such as immediately shipping if the material can be shipped without reaction, thereby enabling more efficient processing and distribution of the sludge-containing material.

[0032] Representative examples of storage containers in the storage facility include, as shown in Figure 1, storage container A for storing sludge-containing material (supply from the receiving facility) that is received at the receiving facility and can be shipped immediately, and sludge-containing material (supply from the classification facility) that has been classified at the classification facility and can be shipped, storage container B for storing sludge-containing material from which impurities have been removed in the impurity removal facility (supply from the impurity removal facility), and storage container C for storing sludge-containing material that does not require impurities to be removed in the impurity removal facility and is to be used for reaction in the reaction facility.

[0033] (Classification equipment) The classification equipment is equipment that classifies sludge-containing materials according to their properties. By having the classification equipment, it is possible to manage the sludge-containing materials to be reacted in the reaction equipment, and it is possible to make decisions such as shipping materials when they are easy to react and when they can be shipped immediately without reacting, which enables more efficient processing and distribution of sludge-containing materials.

[0034] The objects to be classified by the classification equipment include sludge-containing materials received at the receiving equipment, and sludge-containing materials received at the receiving equipment after impurities have been removed at the impurity removal equipment, as shown in Figure 1. In either case, the objects to be classified by the classification equipment are sludge-containing materials received at the receiving equipment. The sludge-containing material (supplied from the classification facility), which is the classified product in the classification facility, is shipped from the shipping facility as is, or is shipped from the shipping facility as a stored product stored in a storage facility, or as a reactant obtained by reacting in a reaction facility, as shown in Figure 1. In addition, it may be treated in an impurity removal facility and a solid-liquid separation facility as necessary, and then supplied to the storage facility or reaction facility, or shipped from the shipping facility.

[0035] The properties of the sludge-containing material that are the criteria for classification in the classification equipment are preferably the sludge concentration, the type of impurities, and the calcium content in the sludge-containing material. In the system of this embodiment, it is preferable to classify the sludge-containing material according to at least one of these properties. As described above, the sludge-containing material received by the system of this embodiment is discharged from the above-mentioned various factories and various construction sites, and therefore may contain a wide variety of impurities that do not contain calcium, such as suspended solids, dust, other calcium-free components, etc. If the impurities contained in the sludge-containing material to be received are known, more efficient processing and distribution of the sludge-containing material will be possible if the sludge-containing material containing the same type of impurities can be processed together in advance.

[0036] For example, when receiving sludge-containing materials with high and low sludge concentrations, it is possible to receive them together and store them in the same storage container, but in consideration of the type and properties of the product at the time of shipping, for example, there are cases where the sludge-containing materials with high or low sludge concentrations can be more efficiently processed and distributed. In this case, rather than storing the sludge-containing materials with high and low sludge concentrations together in the same storage container, storing them separately and proceeding with the processing of the sludge-containing material with the desired sludge concentration can make the processing and distribution of the sludge-containing material more efficient. The same applies to calcium content.

[0037] In addition to the above, for example, when the sludge-containing material contains coarse particles such as aggregates, the properties of the coarse particles, such as the presence or absence of coarse particles and the particle size of the coarse particles, may be used as the classification criteria. When multiple sludge-containing materials containing coarse particles of similar particle size are received, the removal of impurities in the removal equipment and the processing in the solid-liquid separation equipment described below are facilitated by combining the multiple sludge-containing materials, so that the sludge-containing materials can be processed and distributed more efficiently. In addition, both coarse aggregate and fine aggregate may be included as the aggregate that constitutes the coarse particles. When the sludge-containing material containing coarse aggregate and fine aggregate is received at the receiving equipment and passed through the impurity removal equipment, the coarse aggregate is mainly removed, so the properties of the fine aggregate are used as the classification criteria. In addition, when the sludge-containing material is classified directly in the classification equipment without passing through the impurity removal equipment, since both coarse aggregate and fine aggregate are present, the properties of either one of them may be used as the classification criteria.

[0038] If the properties of the sludge-containing material are known at the time of receipt, then these should be followed. If they are unknown, then a portion of the sludge-containing material should be sampled at the time of receipt at the receiving facility, for example when it is received into a receiving container, and any of the above properties should be analyzed.

[0039] (Reaction equipment) The reaction facility is a facility in which the reaction of the sludge contents takes place. Examples of sludge-containing materials that can be used for the reaction in the reaction facility include sludge-containing materials received at the receiving facility (supply from the receiving facility), as well as sludge-containing materials supplied from intermediate facilities, i.e., treated materials that have been treated in at least one facility selected from storage facilities, classification facilities, and solid-liquid separation facilities and impurity removal facilities described below.

[0040] Reactions in the reaction equipment include reactions between the sludge-containing material, which is supplied from each of the above-mentioned facilities, and gas. Examples of such reactions include reactions between carbon dioxide and the sludge content (solid content) contained in the sludge-containing material, such as calcium-containing components, more specifically, cement hydrates (e.g., calcium silicate hydrate, calcium hydroxide, etc.) and calcium components such as unhydrated forms thereof, and reactions between carbon dioxide and calcium-containing components such as calcium hydroxide dissolved in sludge water, and calcium carbonate is obtained as a reactant by the reactions.

[0041] Calcium carbonate, the details of which will be described later, can be suitably used for applications such as cement raw material, solidification raw material, building material, resin raw material, rubber raw material, etc. When used for these applications, by obtaining mass balance certification for calcium carbonate, it becomes possible to contribute to carbon neutrality according to the amount of calcium carbonate obtained by the system of the present embodiment used. In this way, the system of the present embodiment can not only facilitate the smooth processing and distribution of sludge-containing materials, but also enable the fixation of carbon dioxide while producing valuable materials such as calcium carbonate.

[0042] There are no particular limitations on the method for reacting the sludge-containing material with carbon dioxide in the reaction equipment, so long as the reaction proceeds. Representative examples include a method in which a gas containing carbon dioxide is supplied to the sludge-containing material by bubbling, or a method in which the sludge-containing material is sprayed into the gas stream while the gas containing carbon dioxide is circulated.

[0043] In addition, when sludge water is used as the sludge-containing material, since calcium components such as calcium hydroxide are dissolved in the sludge water as described above, the sludge water may be concentrated to precipitate calcium components such as calcium hydroxide before reacting. In other words, the reaction facility may have a concentration device in addition to the reaction device for performing the above reaction.

[0044] The sludge-containing material to be supplied to the reaction facility preferably has a small amount of impurities and a high sludge concentration and calcium concentration, because this facilitates the reaction between the sludge-containing material and carbon dioxide in the reaction facility.

[0045] As a method for supplying the sludge-containing material to the reaction equipment, for example, as shown in Fig. 1, in a classification equipment, the sludge-containing material having properties such as a small amount of impurities and a high sludge concentration and calcium concentration can be classified into a storage container C for storing the sludge-containing material to be supplied to the reaction equipment, and then supplied to the reaction equipment. Also, before supplying from the storage container C to the reaction equipment, solid-liquid separation can be performed in a solid-liquid separation equipment, and the solid content can be supplied to the reaction equipment. In addition, when it is desired to supply sludge containing a large amount of impurities to a reaction equipment, the sludge containing a large amount of impurities can be supplied to an impurity removal equipment, and then supplied to the reaction equipment via storage vessel B, which stores the sludge containing material from which the impurities have been removed in the impurity removal equipment; alternatively, solid-liquid separation can be performed from storage vessel B in a solid separation equipment, and the solid content can be supplied to the reaction equipment.

[0046] Furthermore, as shown in FIG. 1, when the system of this embodiment has a carbon dioxide production facility within it, the carbon dioxide to be supplied to the reaction facility may be produced in the carbon dioxide production facility and supplied by a carbon dioxide supply facility, or carbon dioxide supplied from outside the system of this embodiment may be supplied by a carbon dioxide supply facility.

[0047] (Impurity removal equipment) The intermediate facility may further include an impurity removal facility for removing impurities contained in the sludge-containing material. As described above, the sludge-containing material received by the system of this embodiment is a miscellaneous material, and may contain impurities that do not contain calcium and cannot be shipped from the shipping facility described below, such as suspended solids, dust, and other calcium-free components. In the system of this embodiment, by having a removal facility for removing such impurities in advance, the impurities contained in the sludge-containing material are removed in advance to obtain an impurity-removed material, which allows the reaction in the reaction facility to be carried out more efficiently, and enables more efficient processing and distribution of the sludge-containing material.

[0048] Impurities contained in sludge-containing materials include, for example, the moisture contained in sludge water. By removing the moisture, the amount of material flowing through the system can be reduced, making the system more compact and enabling more efficient processing and distribution. On the other hand, if the sludge water is left as it is and is easier to handle or distribute, there is no need to remove the moisture.

[0049] The impurity removal equipment may be installed before the sludge is received in the receiving vessel of the receiving equipment, or may be installed after the sludge is received in the receiving vessel, as shown in Fig. 1. When the impurity removal equipment is installed after the sludge is received in the receiving vessel, the objects to be removed by the impurity removal equipment include the material supplied from the receiving equipment, the material supplied from the classification equipment, and the material supplied from the storage equipment, as shown in Fig. 1. Furthermore, as shown in Fig. 1, by supplying the sludge-containing material (impurity-removed material) from which impurities have been removed by the impurity removal equipment to the reaction equipment, it is possible to carry out the reaction in the reaction equipment more efficiently.

[0050] In the system of this embodiment, impurity removal equipment may be installed as necessary to remove impurities contained in the sludge-containing material as necessary, and the device for removing the impurities may be appropriately selected depending on the impurities to be removed. For example, various types of sieves such as a trommel (rotary sieve), a vibrating sieve, and an inclined sieve may be used.

[0051] (Solid-liquid separation equipment) The intermediate equipment may further include a solid-liquid separation equipment for separating the solid and liquid components contained in the sludge-containing material. This can be used when only the solid components or only the liquid components contained in the sludge-containing material are shipped, or when only either the solid components or the liquid components are supplied to the reaction device.

[0052] As shown in Fig. 1, the objects to be separated into solid and liquid in the solid-liquid separation equipment include supplies from a receiving facility, as well as supplies from intermediate facilities such as a classification facility, a storage facility, and a reaction facility. In addition, although not shown in Fig. 1, supplies from an impurity removal facility are also included. For example, as shown in Figure 1, the sludge-containing material received at the receiving facility can be shipped as is, or the sludge-containing material stored in storage container B after passing through the classification facility can be shipped as is by the shipping facility, or if only the solids or only the liquids are desired, solid-liquid separation can be performed by the solid-liquid separation facility to produce solid and liquid separated products, which can then be shipped separately by the shipping facility.

[0053] As for the sludge-containing material to be supplied to the reaction equipment, as shown in FIG. 1, the sludge-containing material that has been classified in a classification equipment and stored in storage container B or C for supply to the reaction equipment may be supplied to the reaction equipment as is, or the sludge-containing material stored in these storage containers may be subjected to solid-liquid separation in a solid-liquid separation equipment, and then only the solids or only the liquids may be supplied to the reaction equipment.

[0054] The reaction product obtained in the reaction facility can be shipped directly from the shipping facility. In addition, when the reaction product has a solid content and a liquid content, it may be shipped directly from the shipping facility, or, as shown in Fig. 1, it may be separated into solid and liquid in a solid-liquid separation facility, the solid content may be stored in one of the product storage containers A and B, and the liquid content may be stored in the other product storage container, and the solid content and the liquid content may be shipped separately from the shipping facility.

[0055] In the system of the present embodiment, a solid-liquid separation facility may be provided as necessary to separate the solid and liquid components as necessary, and the device for performing the solid-liquid separation may be appropriately selected depending on the solid and liquid components to be separated. For example, a dehydrator such as a filter press, a filtration device, etc. may be used.

[0056] [Shipping Equipment] The shipping facility is a facility that ships the materials supplied from the receiving facility and the intermediate facility as products according to their intended use. The system of the present embodiment is provided with the receiving facility and the shipping facility, thereby enabling efficient distribution of the sludge-containing material.

[0057] Products shipped from the shipping facility include supplies from the receiving facility and supplies from the intermediate facility. The material fed from the receiving facility is the sludge-containing material received at the receiving facility itself. Materials fed from the intermediate facility include materials fed from the storage facility (storage material), materials fed from the classification facility (classification material), and materials fed from the reaction facility (reactant). Materials fed from the impurity removal facility (impurity removal material) and materials fed from the solid-liquid separation facility (solid-liquid separation material, which is a solid and / or liquid fraction) are also included.

[0058] As shown in Figure 1, the sludge-containing material shipped from the shipping facility includes the material supplied from the receiving facility and the material supplied from the intermediate facility, such as the material supplied from the storage facility (storage material), the material supplied from the classification facility (classified material), the material supplied from the impurity removal facility (impurity removed material), and the material supplied from the solid-liquid separation facility (solid-liquid separated material, solid and / or liquid). This is because these materials do not contain any components other than those contained in the sludge-containing material received at the receiving facility.

[0059] When the sludge-containing material shipped from the shipping facility is a supply from a solid-liquid separation facility, at least one of the solid fraction and the liquid fraction obtained by solid-liquid separation can be shipped. When the sludge-containing material is sludge water containing coarse particles such as aggregate, the coarse particles such as aggregate correspond to the solid content, and the sludge water from which the coarse particles have been removed (the supernatant water in which calcium content such as calcium hydroxide has been dissolved) corresponds to the liquid content. The solid content may also contain impurities such as suspended solids, but if the received sludge-containing material contains a large amount of impurities, these may be removed in an impurity removal facility as necessary.

[0060] In addition, when the sludge-containing material received at the receiving facility is sludge water (which may contain coarse particles such as aggregate), the sludge-containing material shipped from the shipping facility may include calcium components such as calcium hydroxide obtained by concentrating sludge water (which is the supernatant water in which calcium components such as calcium hydroxide are dissolved) obtained by removing coarse particles such as aggregate.

[0061] The uses of the sludge-containing material shipped from the shipping facility include, for example, carbonate raw material, cement raw material, solidification material raw material, papermaking raw material, resin raw material, and rubber raw material, as well as materials (auxiliary materials, etc.) for concrete, mortar, and asphalt materials.

[0062] The sludge-containing matter such as the sludge water can be shipped as calcium hydroxide or the like to ready-mix concrete plants and cement plants as cement raw materials, solidification raw materials, building materials, etc., or can be shipped to paper factories, resin manufacturing plants, and rubber manufacturing plants as auxiliary materials (for example, usable as a chemical agent when recovering caustic soda from sodium carbonate discharged during pulp production), resin raw materials (for example, usable as a flame retardant, antibacterial agent, deodorizer, toxic gas capture agent, etc.), and rubber raw materials (for example, usable as an acid acceptor for fluororubber, etc.). In addition, when the sludge water is of high quality with a low content of impurities, it is particularly useful as a raw material or auxiliary material in paper factories, resin manufacturing plants, rubber manufacturing plants, etc., among the above. Depending on the needs of these factories, the wastewater may be shipped as sludge water or as a powder of calcium content such as calcium hydroxide.

[0063] When the product shipped from the shipping facility is a supply from a reaction facility among the intermediate facilities, the product may contain components other than those contained in the sludge-containing material received at the receiving facility. The feed (reactant) from the reaction facility includes calcium carbonate, which is a reactant obtained in the reaction facility. The uses of the reactants such as calcium carbonate shipped from the shipping facility include carbonate raw materials, cement raw materials, solidification material raw materials, papermaking raw materials, resin raw materials, rubber raw materials, auxiliary materials, etc. For example, calcium carbonate can be shipped as a carbonate raw material, a cement raw material (e.g., cement composition), a solidifying material raw material, a building material, or shipped to paper factories, resin manufacturing plants, and rubber manufacturing plants as a papermaking raw material (e.g., usable as a filler, flocculation aid, retention agent, etc.), a resin raw material (usable as an additive for improving various properties such as impact resistance, dimensional stability, and surface smoothness), and a rubber raw material (usable as a rubber filler for improving heat resistance, strength, and processability). Calcium carbonate can also be shipped as various materials (secondary materials) such as fillers used in mortar, concrete, asphalt, etc. (also called mortar materials, concrete materials, and asphalt materials, respectively).

[0064] Products shipped from the shipping facility include aggregates such as coarse aggregate and fine aggregate. As described above, aggregates are supplies that can be supplied from the impurity removal device and solid-liquid separation device. For example, in the impurity removal device, aggregate is obtained by removing aggregate as an impurity from a sludge-containing material that contains aggregate. Also, in the solid-liquid separation device, aggregate is obtained by separating aggregate as a solid content from a sludge-containing material that contains aggregate. Here, when the sludge-containing material contains, in addition to aggregate, for example, a mortar content, aggregate and mortar content are obtained as solid content by solid-liquid separation. The aggregate obtained from these facilities can be used as various materials (secondary materials) such as mortar materials, concrete materials, asphalt materials, etc., similar to the above calcium carbonate. In addition, when a mortar component is obtained, the mortar component can be used as a mortar raw material or a concrete raw material.

[0065] The shipping facility may include a product storage facility for temporary or long-term storage of the product before shipping, making it easier to respond to changes in the amount of sludge content generated and even fluctuations in the shipping volume.

[0066] There are no particular limitations on the type of product storage facility as long as it is capable of storing products temporarily or long-term before shipment. For example, it is advisable to use a product storage container (which may be of any type, such as a pit type, tank type, vessel type, or silo type).

[0067] Furthermore, when the product storage facility has the above-mentioned product storage container, the product storage container may be a single container or multiple containers, and multiple containers are preferable from the viewpoint of more efficient processing and distribution of the sludge-containing material. When multiple containers are used, the product storage containers can be provided according to the properties of the product, for example, multiple product storage containers can be provided according to the differences in properties such as whether the product is liquid or solid, or the purity of the product. More efficient shipping is possible, and therefore more efficient processing and distribution of the sludge-containing material is possible.

[0068] For example, as shown in Fig. 1, the feed (reactant) from the reaction facility can be subjected to solid-liquid separation in a solid-liquid separation facility as necessary, and the solid portion can be stored in either product storage container A or B, and the liquid portion can be stored in the other product storage container. In this way, the solid portion and the liquid portion can be stored separately, or, as described above, they can be stored according to the purity of the product.

[0069] The shipping facility is not particularly limited in type, etc., so long as it can ship the supplies from each of the facilities described above as products according to their intended use, and may be of a type appropriate for the means of transporting the sludge-containing material and reactants for shipment (for example, vehicles such as dump trucks and tanker trucks, railways, or ships such as bulk carriers). For example, when handling vehicles such as dump trucks and tanker trucks, or land transport means such as railways, the receiving facilities should be located on land. When handling sea transport means such as bulk ships, the receiving facilities should be located on the coast, and in this case, a dedicated wharf should be provided.

[0070] (Means of transportation) The system of this embodiment preferably includes a transport means for transporting the sludge-containing material received at the receiving facility and the product shipped at the shipping facility. That is, the system of this embodiment preferably includes at least one of a receiving transport means for collecting the sludge-containing material from at least one factory facility and construction site and bringing it to the receiving facility, and a shipping transport means for transporting the product shipped from the shipping facility (which is a supply from each of the facilities and includes the sludge-containing material and reactants) to the destination. This allows the system of this embodiment to centrally manage all of the processing and logistics of the sludge-containing material, enabling more efficient processing and logistics of the sludge-containing material.

[0071] As described above, examples of the transportation means include vehicles such as dump trucks and tank trucks, land transportation means such as railways, and sea transportation means such as bulk ships. In the system of this embodiment, it is preferable that at least one of the receiving transportation means and the shipping transportation means is at least one land transportation means selected from the above railways and vehicles, or the above sea transportation means. Therefore, for example, the receiving transportation means and the shipping transportation means may both be at least one land transportation means selected from the above railways and vehicles, or both may be sea transportation means, or one of the receiving transportation means and the shipping transportation means may be a land transportation means and the other may be a sea transportation means.

[0072] In the system of this embodiment, the receiving transport means and the shipping transport means are preferably a single means, which transports the products shipped from the shipping facility to the supply destination (the shipping destination depending on the use of the above-mentioned products), and transports at least one of the sludge-containing material and the gas used in the above-mentioned reaction from the at least one factory facility and the construction site. In this way, by using a single means for receiving and shipping, the product to be shipped is transported to the destination, and on the way back, at least one of the sludge-containing material and the gas used in the reaction is transported, which enables more efficient processing and distribution of the sludge-containing material. In addition, when the destination of the product is the same as the factory facility or construction site that receives the sludge-containing material, more efficient processing and distribution of the sludge-containing material is possible.

[0073] The sludge-containing material transported by the receiving transport means is the sludge-containing material described above as being capable of being received at the receiving facility, and may be transported in a form appropriate to its shape. The gas can also be transported in a package such as a gas tank or cylinder from a factory where carbon dioxide is generated, such as a cement factory.

[0074] [Method of processing and distribution of sludge-containing materials] The method for treating and distributing sludge-containing material of this embodiment includes the following steps: The present invention relates to at least one factory facility comprising: receiving sludge-containing material collected from a construction site at a receiving facility; shipping a product at a shipping facility; and the following (i) to (vi); (i) Storage in a storage facility (ii) Classifying the sludge in a sorting facility according to the nature of its contents. (iii) Carrying out a reaction in a reaction facility (iv) Removing impurities using impurity removal equipment (v) Separating solid and liquid using a solid-liquid separator (vi) supplying such shipping facility; and carrying out at least one of the following treatments and reactions: The shipping facility is a facility for shipping products obtained by carrying out the treatment and reaction according to their intended use. That is it.

[0075] The treatment and distribution method of this embodiment can be easily carried out by adopting the system of this embodiment. The receiving equipment, shipping equipment, and intermediate equipment such as storage equipment, classification equipment, and reaction equipment in the treatment and distribution method of this embodiment are the same as those described in the treatment and distribution system of the sludge-containing material of this embodiment.

[0076] In the treatment and distribution method of this embodiment, the sludge-containing material stored in the storage facility is preferably a sludge-containing material that is received in the receiving facility and classified in the classification facility. In this way, the sludge-containing material to be reacted in the reaction facility can be managed, so that it is easy to react, and if it can be shipped immediately without reacting, it can be judged to ship, etc., so that more efficient treatment and distribution of the sludge-containing material is possible.

[0077] The treatment and distribution method of this embodiment may also include treatment in intermediate facilities of an impurity removal facility and a solid-liquid separation device. The impurity removal facility and the solid-liquid separation device are the same as those described in the treatment and distribution system of the sludge-containing material of this embodiment.

[0078] In the processing and distribution method of this embodiment, the processing and reactions (i) to (vi) may be performed by carrying out only one of these processing or reactions (i) to (vi), or two or more of these processing and / or reactions (i) to (vi) may be performed. In the treatment and distribution method of this embodiment, from the viewpoint of enabling more efficient treatment and distribution of the sludge-containing material, it is preferable to carry out two or more of the treatments and / or reactions (i) to (vi), and it is more preferable to carry out three or more of the treatments and / or reactions. From the same viewpoint, among the treatments (i), (ii), and (iv) to (vi), it is sufficient to have at least the treatment (vi), it is preferable to have (i) and (vi), and it is more preferable to have the treatments (i), (ii), and (vi).

[0079] Considering that not only the sludge-containing material but also the reaction product obtained by the reaction is supplied as a product, and from the viewpoint of enabling more efficient processing and distribution of the sludge-containing material, it is preferable to carry out the above reaction (iii) and only one of the above treatments (i), (ii) and (iv) to (vi), it is more preferable to carry out the above reaction (iii) and two or more of the above treatments (i), (ii) and (iv) to (vi), and it is even more preferable to carry out the above reaction (iii) and three or more of the above treatments (i), (ii) and (iv) to (vi).

[0080] The simplest form of the treatment and logistics method of this embodiment is the route from receiving facility to shipping facility (corresponding to the treatment (vi) above), but by shipping the sludge-containing material received at the receiving facility as a product from the shipping facility, it is possible to receive sludge-containing material discharged from various factories, large and small, in one go, process it by supplying it to the shipping facility, and then ship it from the shipping facility, thereby enabling efficient treatment and logistics of the sludge-containing material. In addition, with regard to supplying it to the shipping facility in (vi) above, the target material may be not only sludge-containing material received at the receiving facility, but also material that has been subjected to the treatments and reactions (i) to (v) above.

[0081] In the treatment and distribution method of this embodiment, by adopting at least one treatment and reaction selected from the above (i) to (vi), it becomes possible to more efficiently perform treatment and distribution according to the desired properties of the product, etc. As a combination of the above (i) to (vi), for example, the forms (a) to (c) described below are representatively preferred.

[0082] In the treatment and distribution method of this embodiment, the sludge-containing material stored by storing the material as described above in (i) can be operated and shipped by selecting, for example, any one of the following (a) to (c). (a) The stored sludge-containing material is treated as a product and shipped from the shipping facility. (b) The stored sludge-containing material is subjected to solid-liquid separation by the above (v), and at least one of the resulting solid and liquid is made into a product and shipped from the above shipping facility. (c) According to (iii) above, the stored sludge-containing material is reacted with gas to produce a reaction product, which is then shipped from the shipping facility.

[0083] The above (a) corresponds to the route of receiving facility (receiving container) → storage container A → shipping facility (the above (i) and (vi) processing) shown in Figure 1. Note that the route of receiving facility (receiving container) → shipping facility shown in Figure 1 is a route that does not involve storage in a storage facility, and corresponds to the above (vi) route that performs processing by supplying to the shipping facility. In the processing and distribution method of this embodiment, the sludge-containing material collected from various places is received in a lump at the receiving facility, and the sludge-containing material is shipped as a product according to its use at the shipping facility, so that the processing and distribution of the sludge-containing material can be made more efficient. Furthermore, as in (a) above, and also in (b) and (c) above, the processing and reaction are carried out in at least one of the storage facility, classification facility, and reaction facility of the intermediate facility, so that the processing and distribution of the sludge-containing material can be made more efficient.

[0084] The above (b) corresponds to the route shown in Figure 1, which is the route of receiving equipment (receiving container) → storage container A → solid-liquid separation equipment → shipping equipment (treatments of (i), (v), and (vi) above), the route via storage container A of the route of receiving equipment (receiving container) → classification equipment → storage container A → solid-liquid separation equipment → shipping equipment (treatments of (i), (ii), (v), and (vi) above); the route via storage container B of the route of receiving equipment (receiving container) → classification equipment → impurity removal equipment → storage container B → solid-liquid separation equipment → shipping equipment (treatments of (i), (ii), (iv), (v), and (vi) above); and the route via storage container C of the route of receiving equipment (receiving container) → classification equipment → storage container C → solid-liquid separation equipment → shipping equipment (treatments of (i), (ii), (v), and (vi) above).

[0085] Examples of the above (c) include the route shown in Figure 1 of receiving equipment (receiving container) → classification equipment → storage container B or C → reaction equipment → shipping equipment (the route from the classification equipment to the reaction equipment via storage containers B and C can be selected as appropriate) (treatments of (i), (ii), (iii), (iv) and (vi) above), and the route of receiving equipment (receiving container) → classification equipment → storage container B or C → reaction equipment → solid-liquid separation equipment → product storage container A and / or B → shipping equipment (the route from the classification equipment to the reaction equipment via storage containers B and C can be selected as appropriate) (treatments of (i), (ii), (iii), (iv), (v) and (vi) above). Furthermore, in the above steps (a) to (c), it goes without saying that impurities may be removed in an impurity removal facility depending on the properties required of the product.

[0086] The treatment and logistics method of this embodiment preferably comprises at least one of recovering the sludge-containing material from at least one factory facility and construction site, recovering the sludge-containing material using a receiving transport means for carrying it to a receiving facility, and transporting the product to the supply destination using a shipping transport means for transporting the product shipped from the shipping facility to the supply destination. This allows all of the treatment and logistics of the sludge-containing material to be managed in a centralized manner, enabling more efficient treatment and logistics of the sludge-containing material. Here, the receiving transport means and the shipping transport means are the same as those described in the treatment and logistics system of the sludge-containing material of this embodiment.

Claims

1. a receiving facility for sludge-containing material recovered from at least one plant facility and construction site; Storage facilities for sludge-containing materials; A sorting facility for sorting the sludge according to its properties; and an intermediate facility having a reaction facility for carrying out a reaction of the sludge content; a shipping facility that ships the supplies from the receiving facility and the intermediate facility as products according to their intended use; A combined system for the treatment and distribution of sludge-containing material comprising:

2. 2. The composite system for processing and distributing sludge-containing material according to claim 1, wherein the intermediate facility further comprises an impurity removal facility for removing impurities contained in the sludge-containing material.

3. The integrated system for processing and distributing sludge-containing material according to claim 1 , wherein the intermediate facility further comprises a solid-liquid separation device.

4. A complex system for processing and logistics of sludge-containing materials as described in claim 1, wherein the storage facility has a plurality of storage containers, and the sludge-containing materials received at the receiving facility are classified by the classification facility into a plurality of sludge-containing material groups, each of which is stored in a single storage container.

5. The complex system for processing and logistics of sludge-containing material as described in claim 1, further comprising at least one of a receiving transport means for collecting the sludge-containing material from the at least one factory facility and construction site and transporting it to the receiving facility, and a shipping transport means for transporting the product shipped from the shipping facility to a destination.

6. A complex system for processing and logistics of sludge-containing materials as described in claim 5, wherein the receiving transportation means and the shipping transportation means are carried out by a single means, which transports the product shipped from the shipping facility to the supply destination, and transports at least one of the sludge-containing materials and the gas used in the reaction from the at least one factory facility and construction site.

7. A complex system for processing and logistics of sludge-containing materials as described in claim 1, wherein the use of the product in the shipping facility is at least one use selected from the group consisting of raw materials for carbonates, cement, solidification materials, papermaking, resins and rubber, and materials for concrete, mortar and asphalt.

8. 2. The composite system for treating and distributing sludge-containing material according to claim 1, wherein the property of the sludge-containing material is at least one property selected from the group consisting of sludge concentration, types of impurities, and calcium content in the sludge-containing material.

9. Receiving sludge-containing material collected from at least one factory facility and construction site at a receiving facility, shipping the product at a shipping facility, and the following (i) to (vi); (i) Storage in a storage facility (ii) Classifying the sludge in a sorting facility according to the nature of the sludge contents. (iii) Carrying out a reaction in a reaction facility (iv) Removing impurities using impurity removal equipment (v) Separating the solid and liquid with a solid-liquid separator. (vi) supplying said shipping facility; and carrying out at least one of the following treatments and reactions: A method for treating and distributing sludge-containing material, wherein the shipping facility is a facility for shipping products obtained by carrying out the treatment and reaction according to their intended use.

10. The method for treating and transporting sludge-containing material described in claim 9, wherein the sludge-containing material stored by storing (i) is a sludge-containing material classified by classifying the sludge-containing material received at the receiving facility by (ii).

11. The method for treating and distributing sludge-containing material according to claim 10, wherein any one of the following (a) to (c) is selected for the sludge-containing material stored by storing (i) above. (a) The stored sludge-containing material is directly treated as a product and shipped from the shipping facility. (b) The stored sludge-containing material is subjected to solid-liquid separation by the process (v), and at least one of the resulting solid and liquid is made into a product and shipped from the shipping facility. (c) The stored sludge-containing material is reacted with gas according to (iii) above, and the resulting reaction product is converted into a product and shipped from the shipping facility.

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