Integrated equipment and manufacturing method for cement-based products

Abstract

To provide a novel integrated facility that includes land-based aquaculture equipment and cement-based product manufacturing equipment. [Solution] The integrated facility 1 comprises a land-based aquaculture facility 10 for cultivating fish, shellfish, and algae on land, and a cement-based product manufacturing facility 20 for manufacturing cement-based products. The cement-based product manufacturing facility 20 includes a material mixing means for mixing cement, and a farming water introduction means for introducing used farming water used in the tanks 11 of the land-based aquaculture facility 10 into the material mixing means.

Description

Technical Field

[0001] The present invention relates to an integrated facility equipped with an onshore aquaculture facility and a cement-based product manufacturing facility, and a method for manufacturing cement-based products.

Background Art

[0002] In recent years, abnormal phenomena such as global warming, rising water temperatures, climate change, and ocean acidification have caused changes in the distribution and ecosystem of fishery resources. In addition, due to the overfishing of fishery resources, it has become difficult to ensure sustainable fishery products. Furthermore, the number of fishermen is decreasing and aging is progressing. For these reasons, sustainable fisheries have been demanded worldwide recently, and aquaculture technology has attracted attention.

[0003] The forms of aquaculture of fishery products can be roughly classified into offshore aquaculture and onshore aquaculture (see, for example, Patent Documents 1 and 2). In particular, onshore aquaculture can provide stable production without being affected by climate change or abnormal weather, can provide an optimal environment for fishery products, has a low risk of parasite occurrence, does not pollute the ocean compared to offshore aquaculture, and is easy to incorporate smart technologies such as IoT and AI. Although it is relatively costly, it is considered a suitable aquaculture form for realizing sustainable fisheries.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in land-based aquaculture, releasing used aquaculture water into the ocean or other bodies of water can lead to environmental pollution. On the other hand, reusing this used aquaculture water requires purification treatment, which increases costs. Therefore, there is a challenge to reduce the amount of water released or treated for purification. On the other hand, the cement industry is a mass-production and mass-consumption industry, and resource conservation and energy saving remain its top priorities.

[0006] The object of the present invention is to provide a novel integrated facility comprising land-based aquaculture equipment and cement-based product manufacturing equipment, and a novel method for manufacturing cement-based products using spent aquaculture water. [Means for solving the problem]

[0007] The inventors of the present invention have discovered that by using spent aquaculture water from land-based aquaculture facilities as the water used in the manufacture of cement-based products, it is possible to reduce the amount of water discharged into the ocean and the amount of purified water used for circulation in land-based aquaculture, and in cement manufacturing, it is possible to reduce the amount of general water used by effectively utilizing this spent aquaculture water. Based on these findings, the inventors have completed the present invention.

[0008] In other words, the present invention is as follows: [1] An integrated facility comprising land-based aquaculture equipment for cultivating fish, shellfish, and algae on land, and cement-based product manufacturing equipment for manufacturing cement-based products, The aforementioned cement-based product manufacturing equipment A material mixing means for mixing materials including cement, The material mixing means includes a means for introducing used aquaculture water used in the tanks of the land-based aquaculture facility, An integrated facility characterized by having the following features.

[0009] [2] The land-based aquaculture facility is a circulating system that returns the used aquaculture water used in the tank back to the tank for reuse, The integrated facility according to [1] above, characterized in that the means for introducing aquaculture water into the cement-based product manufacturing facility is a means for introducing a portion of the used aquaculture water used in the tank. [3] The land-based aquaculture facility is a non-circulating facility in which the used aquaculture water used in the tank is not returned to the tank, The integrated facility according to [1] above, characterized in that the means for introducing aquaculture water into the cement-based product manufacturing facility is a means for introducing part or all of the used aquaculture water used in the tank.

[0010] [4] The integrated equipment according to any one of [1] to [3] above, characterized in that the cement-based product manufacturing equipment is a ready-mix concrete manufacturing equipment for manufacturing ready-mix concrete. [5] The integrated equipment according to any one of [1] to [3] above, characterized in that the cement-based product manufacturing equipment is a molded concrete manufacturing equipment for manufacturing concrete molded products. [6] The integrated equipment according to any one of [1] to [3] above, characterized in that the cement-based product manufacturing equipment is a recycled material manufacturing equipment that manufactures cement-based recycled materials. [7] The integrated facility according to [6] above, characterized in that the recycled material manufacturing facility is equipped with a residue introduction means for introducing aquaculture residue generated in the land-based aquaculture facility.

[0011] [8] A method for producing cement-based products, characterized by mixing spent aquaculture water used in tanks of land-based aquaculture facilities for cultivating fish, shellfish, and algae on land with a material containing cement to produce cement-based products.

[0012] [9] The land-based aquaculture facility is a circulating system that returns the used aquaculture water used in the tank back to the tank for reuse, A method for manufacturing a cement-based product according to [8] above, characterized in that a portion of the spent aquaculture water used in the tank is used as spent aquaculture water for manufacturing the cement-based product.

[10] The onshore aquaculture equipment is a non-circulating type of equipment that does not return the used aquaculture water used in the water tank to the water tank, A method for manufacturing a cement-based product according to [8] above, characterized in that a part or all of the used aquaculture water used in the water tank is used as the used aquaculture water used in the manufacture of the cement-based product.

[0013]

[11] A method for manufacturing a cement-based product according to any one of [8] to

[10] above, characterized in that the cement-based product is fresh concrete.

[12] A method for manufacturing a cement-based product according to any one of [8] to

[10] above, characterized in that the cement-based product is a concrete molded product.

[13] A method for manufacturing a cement-based product according to any one of [8] to

[10] above, characterized in that the cement-based product is a cement-based recycled material.

[14] A method for manufacturing a cement-based product according to

[13] above, characterized in that aquaculture residues generated in the onshore aquaculture equipment are used as raw materials for the cement-based recycled material.

Advantages of the Invention

[0014] According to the present invention, it is possible to provide a novel integrated equipment equipped with onshore aquaculture equipment and cement-based product manufacturing equipment, and a novel method for manufacturing a cement-based product using used aquaculture water.

Brief Description of the Drawings

[0015] [Figure 1] It is a schematic explanatory view of the integrated equipment according to the first embodiment of the present invention. [Figure 2] It is a schematic explanatory view of the integrated equipment according to the second embodiment of the present invention. [Figure 3] It is a schematic explanatory view of the integrated equipment according to the third embodiment of the present invention.

Modes for Carrying Out the Invention

[0016] The present invention provides an integrated facility comprising a land-based aquaculture facility for cultivating fish, shellfish, and algae on land, and a cement-based product manufacturing facility for manufacturing cement-based products. The cement-based product manufacturing equipment is characterized by comprising a material mixing means for mixing materials containing cement, and an aquaculture water introduction means for introducing used aquaculture water used in tanks of land-based aquaculture facilities into the material mixing means.

[0017] Furthermore, the present invention provides a method for producing cement-based products, characterized by mixing used aquaculture water from a tank in a land-based aquaculture facility for cultivating fish, shellfish, and algae on land with a cement-containing material to produce cement-based products.

[0018] Here, the fish, shellfish, and algae that can be cultivated in land-based aquaculture facilities are not particularly limited as long as they can be cultivated on land, but examples include fish, shellfish, shrimp, crabs, octopus, squid, sea urchins, sea cucumbers, nori, kelp, and wakame. Examples of cultivation methods include raising them from eggs or juvenile fish / shellfish, raising juvenile fish caught in the wild (livestock farming), and raising adult fish for a certain period of time.

[0019] In this invention, used aquaculture water from tanks in land-based aquaculture facilities can be used in the manufacture of cement-based products. This makes it possible to reduce the amount of water discharged into the ocean and the amount of purified water used for circulation in land-based aquaculture facilities, and in cement manufacturing, it is possible to reduce the amount of general water used by effectively utilizing used aquaculture water. Therefore, environmental pollution is suppressed and resources are used effectively.

[0020] The following describes the various components of the integrated equipment of the present invention. [Land-based aquaculture facilities] Land-based aquaculture facilities are those that allow for the cultivation and breeding of fish, shellfish, and algae in tanks installed on land. Examples of such land-based aquaculture facilities include circulating systems that return used aquaculture water to the tanks for reuse, and non-circulating systems that do not return used aquaculture water to the tanks (all of it is discharged outside the tanks).

[0021] In a recirculating system, depending on the recirculation rate and the scale of the land-based aquaculture facility and the cement-based product manufacturing facility, all of the aquaculture water other than the recirculated water may be supplied to the cement-based product manufacturing facility, or only a portion of it may be supplied. Similarly, in a non-recirculating system, depending on the scale of the land-based aquaculture facility and the cement-based product manufacturing facility, all of the water discharged from the tanks may be supplied to the cement-based product manufacturing facility, or only a portion of it may be supplied.

[0022] (Circulation equipment) A recirculating system is a system that reuses used aquaculture water by returning it to the tank. Specifically, it is a system in which aquaculture water (unused aquaculture water) is supplied to the tank, a portion of the used aquaculture water discharged from the tank is subjected to a predetermined purification treatment, and then returned to the tank again as aquaculture water (recirculated reused aquaculture water). Examples of purification treatments include foam separation treatment to remove fine particles (e.g., less than 30 μm) from used aquaculture water, filtration treatment to remove coarse particles (e.g., 30 μm or larger) from used aquaculture water, nitrification treatment to oxidize ammonia in used aquaculture water to nitrate, denitrification treatment to neutralize the generated nitrate to nitrogen, and sterilization treatment to sterilize used aquaculture water. In the present invention, a portion or all of the aquaculture water used in the tank that is not recirculated is supplied to the cement-based product manufacturing facility, but from the viewpoint of environmental protection, it is preferable to supply all of it to the cement-based product manufacturing facility.

[0023] (Non-circulation equipment) A non-recirculating system is a system that does not return used aquaculture water from a tank back into the tank. Specifically, it is a system that supplies aquaculture water (unused aquaculture water) to the tank and discharges all of the used aquaculture water from the tank to the outside of the tank. In this invention, some or all of the used aquaculture water discharged from the tank is supplied to a cement-based product manufacturing facility, but from the viewpoint of environmental protection, it is preferable to supply all of it to the cement-based product manufacturing facility.

[0024] [Cement-based product manufacturing equipment] Cement-based product manufacturing equipment refers to equipment used to manufacture cement-based products. Examples of such equipment include ready-mix concrete manufacturing equipment, molded concrete manufacturing equipment, and recycled material manufacturing equipment.

[0025] (Ready-mix concrete manufacturing equipment) Ready-mix concrete manufacturing equipment is equipment used to produce ready-mix concrete (see Figure 1). In ready-mix concrete manufacturing equipment, for example, various materials such as cement, aggregate, water, and admixtures are weighed and transported to a batching plant, where they are mixed and kneaded using the material mixing means of the batching plant to produce ready-mix concrete.

[0026] (Formed concrete manufacturing equipment) Molded concrete manufacturing equipment is equipment used to manufacture molded concrete products (see Figure 2). In molded concrete manufacturing equipment, for example, various materials such as cement, aggregate, water, and admixtures are weighed, mixed and kneaded using the material mixing means of the secondary product plant, poured into pre-made molds, cured, and hardened concrete molded bodies are removed from the molds to produce molded concrete.

[0027] (Recycled material manufacturing equipment) A recycled materials manufacturing facility is a facility that manufactures cement-based recycled materials (recycled materials using cement) (see Figure 3). Examples of cement-based recycled materials include recycled aggregate added to concrete, as well as roadbed materials and paving materials.

[0028] In the recycled material manufacturing facility, various materials such as cement, waste (including by-products), and water are mixed and kneaded using the material mixing means of the recycled material manufacturing plant, then cured and hardened or molded, and subsequently crushed as necessary to produce cement-based recycled materials. Examples of waste materials include coal ash (fly ash), incineration ash, construction waste soil and sludge, and aquaculture residues generated in land-based aquaculture facilities. It is particularly preferable to use aquaculture residues generated in land-based aquaculture facilities. Examples of aquaculture residues include fish feces, leftover feed, and metabolic products. This helps to suppress environmental pollution in land-based aquaculture and to make effective use of resources.

[0029] The cement-based product manufacturing equipment of the present invention comprises a material mixing means for mixing materials containing cement, and an aquaculture water introduction means for introducing spent aquaculture water used in tanks of land-based aquaculture facilities into the material mixing means.

[0030] (Material mixing means) A material mixing means is a means for mixing materials for manufacturing cement-based products, i.e., materials containing cement and water, etc. Examples include container rotation type and agitation type. A container rotation type material mixing means is a type of mixing means that mixes the materials placed inside the container by rotating the container itself, while an agitation type material mixing means is a type of mixing means that mixes the materials placed inside the container by rotating agitation blades inside the container.

[0031] (Means for introducing water for aquaculture) The means of introducing aquaculture water is a method of introducing used aquaculture water, which has been used in tanks of land-based aquaculture facilities, into the material mixing means. Specifically, the aquaculture water introduction means preferably comprises a pipe connected to the land-based aquaculture facility that guides used aquaculture water used in the tank, a used aquaculture water tank connected to the downstream end of this pipe that receives and stores the used aquaculture water, and a pipe (aquaculture water introduction pipe) connecting the used aquaculture water tank and the material mixing means. The receipt of used aquaculture water from the land-based aquaculture facility into the used aquaculture water tank can be done using a liquid transfer pump and a valve (not shown). The spent aquaculture water received in this spent aquaculture water tank can be used as part or all of the water used in the manufacture of cement-based products.

[0032] The following describes specific embodiments of the integrated equipment and cement-based product manufacturing method of the present invention with reference to the drawings, but the present invention is not limited to these embodiments. In the following embodiments, the case in which a circulating system is used as the land-based aquaculture equipment of the integrated equipment will be described, but the same concept applies to non-circulating systems as well.

[0033] The integrated facility 1 according to the first embodiment of the present invention, shown in Figure 1, is a facility that includes a circulating facility 10 which is a land-based aquaculture facility and a ready-mix concrete manufacturing facility 20 which is a cement-based product manufacturing facility.

[0034] The circulating system 10 is equipped with a tank 11 for cultivating fish, shellfish, and algae, and includes a supply pipe 12 that guides unused aquaculture water from the water source W to the tank 11, a discharge pipe 13 that discharges the aquaculture water from the tank 11, and a circulation pipe 14 that resupplies the purified aquaculture water (a portion of the discharged aquaculture water) back to the tank 11.

[0035] Furthermore, the ready-mix concrete manufacturing facility 20 includes a batching plant 21 equipped with a material mixing means, a cement silo 22 for storing cement, an aggregate yard 23 for storing aggregate, an admixture tank 24 for storing admixtures, a tank 25 for storing water from the water source W, a tank (used aquaculture water tank) 26 for storing used aquaculture water discharged from the water tank 11, a pipe 27 connecting the discharge pipe 13 of the circulating equipment 10 and the tank 26, and a pipe (aquaculture water introduction pipe) 28 for introducing the used aquaculture water stored in the tank 26 to the material mixing means. In this embodiment, the tank 26, pipe 27 and pipe 28 constitute the aquaculture water introduction means.

[0036] In the circulating system 10, a portion of the used aquaculture water discharged from the tank 11 through the discharge pipe 13 undergoes a predetermined purification treatment and is returned to the tank 11 as aquaculture water through the circulation pipe 14 for use. At the same time, the remaining used aquaculture water is supplied to the tank 26 via the pipe 27, and an amount of aquaculture water roughly equal to the amount supplied to the tank 26 is newly supplied to the tank 11 from the water source W via the supply pipe 12.

[0037] Meanwhile, in the ready-mix concrete manufacturing facility 20, various materials such as cement, aggregate, admixtures, and water stored in the cement silo 22, aggregate yard 23, admixture tank 24, and tanks 25 and 26 are transported to the batching plant 21, where they are mixed and kneaded using the material mixing means of the batching plant 21 to produce ready-mix concrete.

[0038] The integrated facility 2 according to the second embodiment of the present invention, shown in Figure 2, is a facility that includes a circulating facility 10 which is a land-based aquaculture facility and a molded concrete manufacturing facility 30 which is a cement-based product manufacturing facility.

[0039] The molded concrete manufacturing equipment 30 includes a secondary product plant 31 equipped with a material mixing means, a cement silo 32 for storing cement, an aggregate yard 33 for storing aggregate, an admixture tank 34 for storing admixtures, a tank 35 for storing water from a water source W, a tank (used aquaculture water tank) 36 for storing used aquaculture water discharged from the water tank 11, a pipe 37 connecting the discharge pipe 13 of the circulating equipment 10 and the tank 36, and a pipe (aquaculture water introduction pipe) 38 for introducing the used aquaculture water stored in the tank 36 to the material mixing means. In this embodiment, the tank 36, pipe 37 and pipe 38 constitute the aquaculture water introduction means.

[0040] In the molded concrete manufacturing facility 30, various materials such as cement, aggregate, admixtures, and water stored in the cement silo 32, aggregate yard 33, admixture tank 34, and tanks 35 and 36 are mixed and kneaded using the material mixing means of the secondary product plant 31, poured into pre-fabricated molds, cured, and hardened concrete molded bodies are removed from the molds to produce molded concrete.

[0041] The integrated facility 3 according to the third embodiment of the present invention, shown in Figure 3, is a facility that includes a circulating facility 10 which is a land-based aquaculture facility and a recycled material manufacturing facility 40 which is a cement-based product manufacturing facility.

[0042] The recycled material manufacturing facility 40 includes a recycled material manufacturing plant 41 equipped with a material mixing means, a cement silo 42 for storing cement, a waste silo 43 for storing waste such as fly ash, a waste yard 44 for storing waste such as construction excavated soil, a residue introduction means (not shown) for introducing aquaculture residue generated in the circulating facility 10 into the material mixing means, a harmful component immobilizer tank 45 for storing harmful component immobilizers such as heavy metal immobilizers, a tank 46 for storing water from the water source W, a tank (used aquaculture water tank) 47 for storing used aquaculture water discharged from the tank 11, a pipe 48 connecting the discharge pipe 13 and the tank 47, and a pipe (aquaculture water introduction pipe) 49 for introducing the used aquaculture water stored in the tank 47 into the material mixing means. In this embodiment, the tank 47, pipe 48 and pipe 49 constitute the aquaculture water introduction means.

[0043] In the recycled material manufacturing facility 40, various materials such as cement, waste (fly ash, construction soil, aquaculture residue, etc.), hazardous component immobilizers, and water, which are stored in cement silos 42, waste silos 43, waste yards 44, hazardous component immobilizer tanks 45, and tanks 46 and 47, are mixed and kneaded using the material mixing means of the recycled material manufacturing plant 41, then cured and hardened or molded, and subsequently crushed as necessary to produce cement-based recycled materials. [Industrial applicability]

[0044] The integrated equipment and method for manufacturing cement-based products of the present invention are industrially useful because they can help reduce environmental pollution and equipment costs in land-based aquaculture, as well as contribute to resource and energy conservation in the cement industry. [Explanation of symbols]

[0045] 1. Integrated facilities 2. Integrated facilities 3. Integrated Equipment 10 Circulating equipment (land aquaculture equipment) 11 Aquariums 12 Supply piping 13 Discharge piping 14 Circulation piping 20. Ready-mix concrete manufacturing facilities (cement-based product manufacturing facilities) 21 Batcher Plant 22 Cement silos 23 Aggregate Yard 24 Admixture Tank 25 tanks 26 tanks (used aquaculture water tanks) 27 Piping 28 Piping (aquaculture water introduction piping) 30. Molded concrete manufacturing equipment (cement-based product manufacturing equipment) 31 Secondary Products Plant 32 Cement silos 33 Aggregate Yard 34 Admixture Tank 35 tanks 36 tanks (used aquaculture water tanks) 37 Piping 38 Piping (aquaculture water introduction piping) 40. Recycled material manufacturing equipment (cement-based product manufacturing equipment) 41. Recycled Material Manufacturing Plant 42 Cement silos 43 Waste silos 44 Waste Yard 45. Tank containing a hazardous substance immobilizer. 46 tanks 47 Tanks (Used aquaculture water tanks) 48 Piping 49 Piping (aquaculture water introduction piping)

Claims

1. An integrated facility comprising land-based aquaculture equipment for cultivating fish, shellfish, and algae on land, and cement-based product manufacturing equipment for manufacturing cement-based products, The aforementioned cement-based product manufacturing equipment A material mixing means for mixing materials including cement, The material mixing means includes a means for introducing used aquaculture water used in the tanks of the land-based aquaculture facility, An integrated facility characterized by having the following features.

2. The aforementioned land-based aquaculture facility is a circulating system that returns the used aquaculture water used in the tank back to the tank for reuse, The integrated equipment according to claim 1, characterized in that the means for introducing aquaculture water into the cement-based product manufacturing equipment is a means for introducing a portion of the used aquaculture water used in the tank.

3. The aforementioned land-based aquaculture facility is a non-circulating system that does not return the used aquaculture water used in the tank back to the tank, The integrated equipment according to claim 1, characterized in that the means for introducing aquaculture water into the cement-based product manufacturing equipment is a means for introducing part or all of the used aquaculture water used in the tank.

4. The integrated equipment according to any one of claims 1 to 3, characterized in that the cement-based product manufacturing equipment is a ready-mix concrete manufacturing equipment for manufacturing ready-mix concrete.

5. The integrated equipment according to any one of claims 1 to 3, characterized in that the cement-based product manufacturing equipment is a molded concrete manufacturing equipment for manufacturing concrete molded products.

6. The integrated equipment according to any one of claims 1 to 3, characterized in that the cement-based product manufacturing equipment is a recycled material manufacturing equipment that manufactures cement-based recycled materials.

7. The integrated equipment according to claim 6, characterized in that the recycled material manufacturing equipment is equipped with a residue introduction means for introducing aquaculture residue generated in the land-based aquaculture equipment.

8. A method for manufacturing cement-based products, characterized by mixing used aquaculture water from tanks in land-based aquaculture facilities for cultivating fish, shellfish, and algae on land with a material containing cement to produce cement-based products.

9. The aforementioned land-based aquaculture facility is a circulating system that returns the used aquaculture water used in the tank back to the tank for reuse, The method for manufacturing a cement-based product according to claim 8, characterized in that a portion of the spent aquaculture water used in the tank is used as spent aquaculture water for manufacturing the cement-based product.

10. The aforementioned land-based aquaculture facility is a non-circulating system that does not return the used aquaculture water used in the tank back to the tank, The method for manufacturing a cement-based product according to claim 8, characterized in that a portion or all of the spent aquaculture water used in the tank is used as spent aquaculture water for manufacturing the cement-based product.

11. A method for manufacturing a cement-based product according to any one of 8 to 10, characterized in that the cement-based product is ready-mixed concrete.

12. A method for manufacturing a cement-based product according to any one of 8 to 10, characterized in that the cement-based product is a concrete molded product.

13. A method for manufacturing a cement-based product according to any one of 8 to 10, characterized in that the cement-based product is a recycled cement-based material.

14. A method for producing a cement-based product according to claim 13, characterized in that aquaculture residue generated in the land-based aquaculture facility is used as a raw material for the cement-based recycled material.

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