Oil treatment agent

Abstract

The objective is to provide an oil treatment agent that not only has high oil treatment capacity but can also quickly remove spilled oil from any surface, including three-dimensional and uneven surfaces. Another objective is to provide a treatment agent that can be easily removed after oil treatment. [Solution] The oil treatment agent, which is mainly composed of sawdust and blended with magnesium lime, not only has high oil treatment capacity, but the powdered magnesium lime can adsorb and treat oil that has settled into depressions, so it can efficiently adsorb and remove oil even on uneven surfaces. The treatment agent after oil treatment can be collected and incinerated, making it very convenient.

Description

[Technical Field]

[0001] This invention relates to a treatment agent for adsorbing and treating various oils spilled in traffic accidents, construction sites, factory premises, etc. [Background technology]

[0002] Traffic accidents, construction sites, factories, etc., often result in the leakage or spillage of various oils, such as gasoline, diesel fuel, and lubricating oil. When oil leaks or spills on roads or in factories, it is necessary to treat and remove the oil as quickly as possible, as the spilled oil could cause further accidents or fires. In factories, old cloths called rags are usually used to absorb and wipe up oil. While rags are good at wiping up small amounts of oil, their oil absorption capacity is not very high, so if a large amount of oil leaks or spills due to an accident, a large number of rags are required. Also, because they are used for wiping, treating large amounts of oil is inefficient and time-consuming. For this reason, various oil treatment agents have been developed (Patent Documents 1-4).

[0003] Patent Document 1 discloses porous adsorption sheets and mats made from industrial waste such as diatomaceous earth residue and zeolite residue. Patent Document 2 discloses an oil adsorption mat made by filling a bag-shaped structure, which consists of an oil-permeable sheet on one side and an oil-impermeable sheet on the other side, with sawdust. Patent Document 3 discloses the use of porous wood pellets, which are made by granulating wood chips, as a treatment agent for water and oil. Patent Document 4 discloses an oil adsorbent made by mixing charcoal powder, gypsum powder, and paper powder.

[0004] However, the invention described in Patent Document 1 is a molded product made from industrial waste in the form of a thermoplastic resin sheet or mat, and the invention described in Patent Document 2 is a mat made by covering sawdust with an oil-permeable sheet. Therefore, there was a problem in that they could not completely adsorb oil in uneven, three-dimensional places. Furthermore, they could not completely treat oil on surfaces with fine irregularities, such as road surfaces. The invention described in Patent Document 3 is a wood pellet granulated from wood chips. Although it has good adsorption properties, its large size (1-7 mm in diameter and 1-12 mm in length) makes it difficult to adsorb oil that has entered into depressions in surfaces with fine irregularities, such as road surfaces. The invention described in Patent Document 4 contains charcoal powder, and even after removing the treatment agent, it is not possible to remove the charcoal powder that has entered into fine depressions, resulting in the problem that blackening of the treated surface remains indefinitely. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2012-86205 [Patent Document 2] Japanese Patent Application Publication No. 8-117594 [Patent Document 3] Japanese Patent Publication No. 2011-136312 [Patent Document 4] Japanese Patent Publication No. 2006-297358 [Overview of the project] [Problems that the invention aims to solve]

[0006] The present invention aims to provide an oil treatment agent that not only has high oil treatment capacity but can also quickly remove spilled oil from any surface, including three-dimensional and uneven surfaces. Furthermore, it aims to provide a treatment agent that allows for easy removal of used treatment agents after oil treatment. [Means for solving the problem]

[0007] The present invention relates to the following oil treatment agent. (1) An oil treatment agent characterized by containing sawdust and magnesium lime. Sawdust has high oil absorption capacity and can quickly absorb spilled oil. Dolomite lime is in powder form, so even when used on uneven surfaces such as roads, it can get into depressions and absorb and remove oil.

[0008] (2) The oil treatment agent according to (1), further characterized by containing food processing waste. Food processing waste consists of powdery food residue generated during processing. Due to its small particle size, it can penetrate small depressions and absorb oil, similar to magnesium lime.

[0009] (3) 1 m of sawdust 3 An oil treatment agent according to (1) or (2), characterized by containing 20 kg or more and 80 kg or less of magnesium lime per unit. The inventors of this invention have conducted diligent studies and found that the amount of magnesium lime is equivalent to 1 m³ of sawdust. 3 When the amount was less than 20 kg, oil residue sometimes remained on uneven surfaces. Also, 1 m of sawdust 3 When more than 80 kg of magnesium lime was added per cubic meter of sawdust, lime residue remained on the road surface, causing it to whiten. Therefore, the amount of magnesium lime needed was... 3 It is preferable that the amount per person be between 20 kg and 80 kg.

[0010] (4) 1 m of sawdust 3 (2) An oil treatment agent containing food processing waste of 20 kg or less per unit. Food processing waste is sawdust 1m 3 Adding more than 20 kg per cubic meter does not improve oil absorption capacity. Therefore, 1 m³ of sawdust 3 There is no need to add more than 20 kg per serving.

[0011] The present invention is an oil treatment agent primarily composed of sawdust. As disclosed in Patent Documents 2 and 3, oil treatment agents using sawdust have been developed conventionally. The inventors have utilized the advantages of sawdust while developing an oil treatment agent with higher processing capacity and ease of use, thereby completing the present invention.

[0012] The sawdust used is a by-product of processing thinned timber. It is sufficient to use sawdust of approximately 0.5mm to 3mm in size, which is typically produced during processing. Finer powdered sawdust is prone to scattering by wind when used outdoors, such as on roads, so the above size range is preferable. Sawdust has an irregular shape, resulting in a large surface area and high absorption capacity. Furthermore, because it is not molded into mats or pellets, the treatment agent can be sprayed and used to absorb oil even on uneven or depressiond road surfaces.

[0013] Furthermore, efforts toward the SDGs have been attracting attention in recent years. One of the SDGs is the protection of terrestrial ecosystems, and the use of thinned timber is essential for sustainable forest management and contributes to the protection of terrestrial ecosystems. Therefore, the effective use of sawdust generated during the processing of thinned timber and other materials can be said to be a meaningful initiative from the perspective of the SDGs.

[0014] This oil treatment agent is primarily composed of sawdust and contains powdered magnesium lime. The powdered magnesium lime is finer than sawdust, allowing it to adsorb oil from depressions in surfaces with fine irregularities, such as roads, where sawdust cannot reach. As a result, it can adsorb and treat spilled oil even on surfaces with fine irregularities that could not be treated with sawdust alone or conventional oil absorbents. Furthermore, because magnesium lime has a higher specific gravity than sawdust, even when used outdoors in powder form, it is less likely to be scattered by the wind, making post-adsorption treatment easier. By using magnesium lime, it is possible to adsorb oil that has seeped into small irregularities in asphalt that sawdust cannot absorb.

[0015] Hydrated lime, which has components similar to magnesia lime, has been conventionally used as an oil treatment agent. However, since hydrated lime remains on the road surface and the whitening of the road surface becomes prominent, after treatment with hydrated lime, it is treated again with sawdust. Similar to magnesia lime, hydrated lime also has a small particle size, so it adsorbs oil in small irregularities on the road surface. However, the treatment using hydrated lime and sawdust is suitable for oil treatment of the road surface, but hydrated lime shows a strong alkalinity of pH 12 to 14 and may generate ammonia when mixed with food processing waste. Therefore, it was not possible to produce the mixed oil treatment agent. The inventors considered using magnesia lime with weak alkalinity to suppress the generation of harmful ammonia and developed an oil treatment agent with high treatment ability. They conceived of blending magnesia lime with sawdust and studied the blending amount.

[0016] Compared with hydrated lime, which has a large amount of alkaline components, magnesia lime has less alkaline components and the neutralization reaction is mild. Therefore, even when mixed as an oil treatment agent, the generated ammonia is extremely微量, and no problems occur during storage. Since magnesia lime is usually used as a fertilizer, similar to sawdust, no health problems occur even when it comes into contact with the skin or the like. Therefore, we decided to study the optimal blending ratio of sawdust and magnesia lime.

[0017] When the blending ratio of sawdust and magnesia lime was studied, when it was less than 20 kg per 1 m of sawdust, oil might remain on the uneven road surface or the like. Therefore, it is preferable to mix 20 kg or more of magnesia lime per 1 m of sawdust. Also, since sawdust has a large surface area and high absorption ability, when more than 80 kg of magnesia lime was blended per 1 m of sawdust, lime components remained on the road surface and whitened the road surface. Therefore, the blending amount of magnesia lime is preferably 80 kg or less per 1 m of sawdust. 3 When less than 20 kg of magnesia lime was mixed per 1 m of sawdust, oil might remain on the uneven road surface or the like. Therefore, it is preferable to mix 20 kg or more of magnesia lime per 1 m of sawdust. 3 Since sawdust has a large surface area and high absorption ability, when more than 80 kg of magnesia lime was blended per 1 m of sawdust, lime components remained on the road surface and whitened the road surface. Therefore, the blending amount of magnesia lime is preferably 80 kg or less per 1 m of sawdust. 3 When more than 80 kg of magnesia lime was blended per 1 m of sawdust, lime components remained on the road surface and whitened the road surface. Therefore, the blending amount of magnesia lime is preferably 80 kg or less per 1 m of sawdust. 3 The blending amount of magnesia lime is preferably 80 kg or less per 1 m of sawdust.

[0018] Furthermore, in addition to sawdust and magnesia lime, the oil treatment agent can contain food processing waste. Here, food processing waste refers to fine residues generated during food processing such as washing and cutting materials in food processing factories that manufacture frozen foods and processed foods, and those collected by dust collectors. Therefore, since it is already in a fine powder form and dry at the time of collection, it can be directly blended into the oil treatment agent. Also, because it is sufficiently dry, there will be no problem with storage stability when blended.

[0019] Since the food processing waste collected by the dust collector is in a very fine powder form, similar to magnesia lime, it can also adsorb and treat the oil that has entered small depressions on the uneven surface. Therefore, a part of the magnesia lime can be replaced with food processing waste for blending.

[0020] If the food processing waste is 20 kg or less per 1 m 3 of sawdust, it can be blended in place of magnesia lime. Since the lime component may react with the nitrogen component of the food processing waste to generate ammonia gas, it is not desirable to blend more than 20 kg. There are various types of food processing waste. For example, those that contain little oil, such as tea and vegetables, have the same treatment ability as magnesia lime. Even those that contain some oil, such as cheese, will not impair the oil treatment ability of magnesia lime if it is 20 kg or less.

[0021] Reducing food loss is also one of the initiatives listed in the SDGs. Although the food processing waste generated in the food processing process cannot be eaten, it is very meaningful that it can be reused in another form.

[0022] As mentioned above, this oil treatment agent has high oil absorption capacity and is highly effective even on uneven surfaces and in three-dimensional locations. Furthermore, because it is mainly composed of sawdust and blended with magnesium lime, it does not pose a health risk to workers. In addition, even if the oil treatment agent is sprayed on the road surface in the event of a vehicle accident, there is no risk of vehicles slipping, and the flammability of the oil-containing treatment agent after treatment is low due to the addition of lime. The oil treatment agent after treatment can be collected by sweeping it up with a broom and then incinerated, making disposal very simple. Moreover, because it is made using thinned wood and food processing waste, it does not harm the natural environment even if it is washed away or scattered by rainwater or wind, thus aligning with the SDGs.

Claims

1. An oil treatment agent characterized by containing sawdust and magnesium lime.

2. Furthermore, the oil treatment agent according to claim 1, characterized in that it includes food processing waste.

3. 1 meter of sawdust ３ The oil treatment agent according to claim 1 or 2, characterized in that it contains 20 kg or more and 80 kg or less of magnesium lime per unit.

4. 1 meter of sawdust ３ The oil treatment agent according to claim 2, which includes food processing waste of 20 kg or less per unit.