JPS59154190A - Treatment of oily waste - Google Patents

Abstract

PURPOSE:To discard oily waste as a solid material which has no fluidity and is convenient to handle by dispersing the oily waste into water then adding a gelling agent thereto to gel the waste, discarding and incinerating the gelled waste. CONSTITUTION:A gelling agent is added to a dispersion adjusted to 8/2-1/9 in the weight ratio of oily waste/water to gel the oily waste. The gelled waste formed in such a way is discarded and incinerated. A gelling agent consisting of a combination of a water soluble salt such as sodium salt, potassium salt or the like of alginicacid, and a polyvalent metallic compd. that can form polyvalent metallic ion or the like is used as the above-described gelling agent. The amt. of the gelling agent to be added to 100 parts mixture composed of the oily waste and water is preferably 0.5-30 parts in the case of using the water soluble alginate. There are waste oils such as mineral oils, vegetable oils and animal oils, org. solvents, etc. that can be mixed with water as the oily waste to be gelled.

Description

[Detailed Description of the Invention] The treatment of oily waste can be used to reduce pollution,
This is an important issue in terms of processing complexity and processing costs.

In recent years, in order to prevent pollution and conserve resources, efforts have been made to reuse oily waste such as single large quantities of waste oil discharged from factories. Generally, the waste is collected in a tank for oily waste and then incinerated in an incinerator equipped with a waste smoke treatment device and adequate odor control measures.

Since there are only a few incinerators equipped with the above-mentioned sufficient equipment, the collected oily waste must be transported over long distances to the incinerator, and in addition to the transportation problems caused by scattering, the waste is After collection and before incineration? However, various problems may occur. For example, if the amount of oily waste discharged is diverse and small, various types of waste oils will be mixed and put into one waste tank, and unexpected reactions will occur between them, causing thickening in the tank. Or, solid matter is formed and cannot be incinerated using normal methods. If there is a possibility of such trouble occurring, put the waste in a wide-mouthed container of an easy-to-handle size, add sawdust, etc. to make it fluid, and then transport it to the incinerator. Complicated processing such as incineration is required. When the oily waste is highly viscous or contains solids, the same complicated treatment as described above is usually necessary. However, there are problems in that sawdust, etc. used to eliminate fluidity during the processing and transportation of these containers, is scattered, and when containers are used in wide-mouthed containers, the contents may spill out when the container is overturned.

The inventors of the present invention have conducted intensive research to improve the above-mentioned drawbacks, and have found that by dispersing oily waste in water, gelling it using a gelling agent, and disposing of it as a gelled product and incinerating it, Troubles that occur during oily waste treatment, such as liquid waste thickening in the oily waste sail tank or solid matter generated that cannot be incinerated using normal methods, high viscosity materials, solid anastomotic cargo, etc. This has the effect of eliminating the fluidity of oily waste, eliminating the troublesome processing required to make it easier to handle, and the contamination of the surrounding area that may occur during processing or transportation.

The gelling agent used in the present invention is one that uses a water-soluble salt such as a sodium salt, potassium salt, or ammonium salt of alginic acid in combination with a polyvalent metal compound that can generate polyvalent metal ions, or one that uses a combination of alginic acid propylene glycol ester and a polyvalent metal compound that can generate polyvalent metal ions. Those that use a polyvalent metal compound that can generate metal ions, those that use pectin and a polyvalent metal compound that generates polyvalent metal ions, and those that use a combination of pectin and a polyvalent metal compound that can generate polyvalent metal ions,
guar gum, hydroxymethylated guar gum, hydroxyethylated guar gum, carboxymethylated guar gum, phosphorylated guar gum, cationized guar gum, Guar gum compounds such as carboxymethyl hydroxyprobylated guar gum alone or in combination with boric acid, zinc borate, calcium borate, sodium borate, methyl borate, ethyl borate, nickel borate, barium borate, and boric acid. Boric acid compounds such as magnesium chloride, silver borate, manganese borate, lithium borate alone or in combination, kappa carrageenan sodium salt and potassium ion such as potassium chloride, rubidium chloride, cesium chloride, ammonium chloride, etc. , rubidium ion, cesium ion,
Compounds that produce ammonium ions and/or
Those using a combination of polyvalent metal compounds that generate polyvalent metal ions, those that use sodium salt and/or potassium salt of iota carrageenan in combination with a polyvalent metal compound that generates polyvalent metal ions, xanthan gum and locust bean Examples include those used in combination with gum, agar, and gelatin.

The above-mentioned alginates, alginate propylene glycol ester, pectin, sodium and/or ammonium salts of OMO, calcium cappanate, calcium borate, calcium tartrate, calcium stearate, calcium carbonate, calcium metasilicate, calcium metaborate, calcium sulfate. , tricalcium phosphate, calcium hydrogen phosphate, calcium dihydrogen phosphate, barium sulfate, aluminum silicate, aluminum stearate, aluminum fluoride, aluminum phosphate, zinc citrate, zinc tartrate, zinc stearate, zinc carbonate, Manganous tartrate, manganous carbonate, manganous fluoride, manganese fluoride, manganese phosphate, manganese phosphate, ferrous citrate, ferrous lactate, ferrous fluoride , ferric fluoride, ferrous phosphate, ferric phosphate,
Nickel stearate, nickel carbonate, basic nickel carbonate, nickel fluoride, nickel phosphate, cuprous benzoate, cupric benzoate, copper citrate, dibasic tartrate
Copper, cupric stearate, cuprous fluoride, cupric fluoride, magnesium citrate, magnesium borate, magnesium stearate, magnesium carbonate, magnesium metaborate, magnesium sulfate, trimagnesium phosphate, hydrogen phosphate Polyvalent metal salts such as magnesium, magnesium fluoride, and magnesium silicate, aluminum oxide,
Polymers such as zinc oxide, manganese oxide, manganese dioxide, ferrous oxide, ferric oxide, triiron tetroxide, nickel oxide, cuprous oxide, cuprous oxide, ferric oxide, magnesium oxide, etc. Polyvalent metal hydroxides such as valent metal oxides, calcium hydroxide, aluminum hydroxide, ferrous hydroxide, ferric hydroxide, ferric hydroxide, nickel hydroxide, magnesium hydroxide, etc. Things can be opened.

100 parts of water-soluble alginate in the present invention (parts by weight,
The same applies below), the amount of the polyvalent metal compound used is 2 to 2.
200 parts, the amount of polyvalent metal compound used per 100 parts of propylene glycol alginate is 2 to 200 parts, and the amount of polyvalent metal compound used is 0.1 to 1 per 100 parts of pectin.
50 parts, the amount of polyvalent metal compound used per 100 parts of sodium salt and/or ammonium salt of aMa is 1
- 200 parts, the amount of boric acid compound used per 100 parts of guar gum compound is 0.01 to 50 parts, a compound that generates potassium ion, rubidium ion, cesium ion, ammonium ion and (or) per 100s of kappa carrageenan sodium salt. The amount of polyvalent metal compound used is 1 to 250 parts, the amount of polyvalent metal compound used is 1 to 250 parts per 100 parts of sodium salt and/or potassium salt of iota carrageenan, and xanthan gum 10
The amount of locust bean gum used for 0 parts is 11-9
It is 00 copies.

Examples of vine oily wastes that can be gelled according to the present invention include engine oil, gear oil, hydraulic oil, compressor oil, cutting oil, quenching oil, rolling oil, brake oil, heat transfer oil, shock absorber oil, and high-temperature operation oil. Oil, waste oil such as mineral oil such as tempura waste oil, vegetable oil, animal oil, or synthetic lubricating oil, oily chemical waste such as higher alcohol, higher fatty acid, benzene, toluene, xylene, carbon tetrachloride, trichloride, ortho Examples include oily wastes that can be mixed with water, such as organic bath agents such as dichlorobenzene, benzene, and thinner.

In the present invention, gelation of oily waste is carried out by applying the above-mentioned gelling agent to a dispersion of the waste in water. After the gelling agent is dissolved in water, it gelates the water and converts it into a gelled product. At this time, the oily waste dispersed in the water is captured in the gel and becomes a gelled product. For example, when using a water-soluble alginate and a polyvalent metal compound, the water-soluble alginate dissolves in water as alginate ions, and the polyvalent metal ions generated from the polyvalent metal compound react and crosslink, forming a gel. becomes. When using alginate propylene glycol ester and a polyvalent metal compound, when using OM (+ sodium salt and/or ammonium salt and a polyvalent metal compound), when using pectin and a polyvalent metal compound, When using a guar gum compound and a boric acid compound, when using a kappa carrageenan sodium salt and a polyvalent metal compound, or when using a sodium salt and/or potassium salt of iota carrageenan and a polyvalent metal compound When a water-soluble alginate and a polyvalent metal compound are used, gelation occurs in the same manner as in the case where a water-soluble alginate and a polyvalent metal compound are used.When a kappa carrageenan sodium salt and a compound that generates potassium ions, rubidium ions, cesium ions, and ammonium ions are used, After dissolving a sodium salt that is soluble in water, it is converted into an insoluble salt of kappa carrageenan such as potassium salt, rubidium salt, cesium salt, or ammonium salt to form a gel.

On the other hand, when using xanthan gum and locust bean gum, the mixture dissolves in water at high temperatures and turns into a gelatinized product at low temperatures, so these properties are used to gel the mixture. When using agar, when using gelatin, use xanthan gum and locust bean gum.
Gelify in the same manner as T-Ji・Rubaai.

Kappa carrageenan sodium salt and lambda carrageenan or locust bean gum can be used together to form a gel in the same manner as kappa carrageenan sodium salt, and when they are used in combination, the gelled product produced is not brittle and has no solid gel. A monster can be changed. It is also possible to use agar and locust bean gum in combination to form a gel in the same manner as in the case of agar, and when they are used in combination, the gelled product produced is not brittle and can be replaced with a complete gelled product.

For example, when a gel is produced using a water-soluble alginate and a polyvalent metal compound, if the water-soluble alginate reacts with polyvalent metal ions on the surface of the alginate particles and gels before it is sufficiently dissolved, the internal The remaining water-soluble alginate no longer dissolves and cannot be used effectively.

In such a case, it becomes necessary to limit the amount of polyvalent metal ions produced until the water-soluble alginate is sufficiently dissolved. One way to limit the amount of polyvalent metal ions is to react with the generated polyvalent metal ions and capture them. A gelling reaction retarder is used for this purpose.

The gelation reaction retarder used in the gelation reaction using a water-soluble alginate and a polyvalent metal compound is a sodium salt or potassium salt of hydroxy acids such as birophosphoric acid, tripolyphosphoric acid, phosphoric acid, ccurconic acid, and glucoheptonic acid. , aminopolycarboxylic acids such as ethylenediaminetetraacetic acid and nitrilotriacetic acid, and those that capture polyvalent metal ions generated from polyvalent metal compounds such as triethanolamine (or carbonates of alkali metals,
Phosphates and silicic acids react with polyvalent metal ions such as τ, oxalates, and tartrates to form almost insoluble salts, and these can be used alone or in combination. Good too.

alginate propylene glycol ester, pectin,
Regarding gelling agents to be used in combination with polyvalent metal compounds such as OMO sodium salt and/or ammonium salt, kappa carrageenan sodium salt, and iota carrageenan sodium salt and/or potassium salt, the same rules apply as in the case of water-soluble alginates. Use a gelation reaction retarder.

When using the above-mentioned gelation reaction retardant, the amount used is 0.1 to 180 parts per 100 parts of water-soluble alginate, 0.1 to 180 parts per 100 parts of alginate propylene glycol ester, and 0.1 to 180 parts per 100 parts of pectin. Te 0.1~
150 parts, 0.1 to 180 parts per 100 parts of OMC sodium salt and/or ammonium salt, 0.1 to 2 parts per 100 parts of kappa carrageenan sodium salt
0.00 parts, preferably 0.1 to 200 parts per 100 parts of the sodium salt and/or potassium salt of iota carrageenan.

When using pectin and a polyvalent metal compound, when using kappa carrageenan sodium salt and a polyvalent metal compound, when using iota carrageenan sodium salt and/or potassium salt and a polyvalent metal compound, or when using kappa carrageenan sodium salt and/or potassium salt and a polyvalent metal compound. When carrageenan sodium salt and a compound that generates potassium ions, rubidium ions, cesium ions, or ammonium ions are used, the resulting gelled product is dissolved by heating to about 50°C or higher, and gelled by cooling. Therefore, if gelation occurs before pectin, kappa-carrageenan sodium salt or ota-carrageenan sodium salt and (or potassium salt) are sufficiently dissolved, it can be used as a gelation reaction retarder. A preferable gelled product can be obtained by heating and dissolving and then cooling and gelling without using pectin, Ka/N11 cara 4ζ-nan sodium salt or iota carrageenan sodium salt, and (or) Zinc acetate, aluminum chloride, aluminum acetate, ammonium sulfate, which are rapidly soluble polyvalent metal compounds used in combination with potassium salts, or compounds that generate potassium ions, rubidium ions, cesium ions, or ammonium ions used in combination with kappa carrageenan sodium salts. Aluminum, aluminum sulfate, aluminum bromide,
Aluminum lactate, aluminum sulfate, calcium chloride, calcium formate, calcium acetate, calcium bromide,
Calcium lactate, ferrous chloride, ferric chloride, ferric nitrate, ferrous sulfate, sulfuric acid f! S2 iron, nickel chloride, nickel acetate, nickel sulfate, manganese chloride, manganese acetate,
manganese sulfate, magnesium chloride, magnesium formate,
Preferable gelled products such as magnesium acetate can also be obtained.

In the case of producing a gelled product using a guar gum compound and a boric acid compound, as well as in the case of producing a gelled product using a water-soluble alginate and a polyvalent metal compound, the guar gum compound Before the particles can be sufficiently polished, the surface of the guar gum compound particles reacts with boric acid ions to form a gel, and the guar gum compound remaining inside becomes insoluble and cannot be used effectively. In that case, by using a gelation reaction retarder, the guar gum compound can be sufficiently dissolved.
Use it effectively.

Glycerin, erythritol,
Low molecular weight polyhydric alcohols such as aravit, ribit, xylit, sorbit, mannit, treit, hexit, idit, and talit are suitable, and the amount used is 0.00 parts per 100 parts of the guar gum compound.
1 to 50 parts is preferred.

Gelled products using guar gum compounds and boric acid compounds also have reversibility, melting when heated to about 50°C or higher and gelling when cooled. Even if this occurs, a preferable gelled product can be obtained by dissolving it by heating and then cooling and gelling it without using a gelling reaction retardant.

For example, when producing a gel using a water-soluble alginate and a polyvalent metal compound, if the rate at which polyvalent metal ions are produced from the polyvalent metal compound is slow and the gelation reaction is slow, then quenching By using weakly acidic substances such as acid, tartaric acid, glucono delta lactone, adipic acid, benzoic acid, salicylic acid, lactic acid, succinic acid, gluconic acid, and boric acid, the production rate of polyvalent metal ions can be increased and the desired The gelation reaction can occur at an unprecedented rate.

Similarly to the case of water-soluble alginates, the gelation reaction rate of other gelling agents using polyvalent metal compounds can also be increased by using the weakly acidic substance.

The weight ratio of the oily waste/water is 872 to 1/9,
If necessary, an emulsifier or the like may be used as appropriate to disperse the oily waste in water.

As the emulsifier used in the present invention, polyoxyethylene alkyl ethers having alkyl groups such as octyl, nonyl, and dodecyl, which are nonionic surfactants, and alkyl groups such as octyl, lauryl, cetyl, stearyl, and oleyl are used. polyoxyethylene alkyl ethers, polyethylene glycol fatty acid esters such as oleic acid monoester of polyethylene glycol, stearic acid monoester, stearic acid diester, lauric acid monoester, lauryl, stearyl,
Polyoxyethylene alkylamines having an alkyl group such as oleyl, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan tristearate, poly Polyoxyethylene sorbitan fatty acid esters such as oxyethylene sorbitan monooleate and polyoxyethylene sorbitan trioleate, polypropylene glycol polyethylene glycol ethers, fatty acid jetanolamides such as lauric acid jetanolamide, sucrose fatty acid ester fatty acid monoglycerides such as lauric acid monoglyceride, stearic acid monoglyceride, oleic acid monoglyceride, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate,
Sorbitan fatty acid esters such as sorbitan distearate, sorbitan tristearate, sorbitan monooleate, sorbitan trioleate, polyoxyethylene lauric acid amide, polyoxyethylene stearic acid amide, polyoxyethylene oleic acid amide, etc. polyoxyethylene fatty acid amides, anionic surfactants such as sodium oleate, potassium oleate, coconut oil fatty acid), IJum, potassium coconut oil fatty acid, semi-hard 4L-fatty acid sodium, semi-hardened beef tallow fatty acid potassium , higher fatty acid alkali metal salts such as castor oil fatty acid sodium and castor oil fatty acid potassium, alkyl sulfate ester alkali metal salts having an alkyl group such as lauryl and oleyl, ammonium salts of alkyl sulfate esters having an alkyl group such as lauryl and oleyl, lauryl Alkyl sulfate ester triethanolamine salts having alkyl groups such as, alkali metal salts of alkylbenzenesulfonic acids having alkyl groups such as dodecyl, alkali metal salts of alkylnaphthalenesulfonates having alkyl groups such as butyl and octyl, alkyl groups such as octyl, etc. dialkyl sulfosuccinic acid alkali metal salts having
Polyoxyethylene alkyl ether sulfate sulfate alkali metal salts having an alkyl group such as lauryl, polyoxyethylene alkyl ether sulfate triethanolamine salts, polyoxyethylene alkyl phenol ether sulfate alkali metal salts having an alkyl group such as nonyl, lauric acid Examples include fatty acid amide sulfonates such as amide sulfonate and oleic acid amide sulfonate, sulfated oils such as castor oil and whale oil, alkali metal salts of polyoxyethylene oleyl phosphate, and alkali metal salts of lauryl phosphate.

When an emulsifier is used in the present invention, the amount of emulsifier used is 0.5 to 600 parts when a water-soluble alginate is used, and the amount of the emulsifier used is 0.5 to 600 parts when a water-soluble alginate is used, and when an alginate propylene glycol ester is used, the amount of the emulsifier used is 0.5 to 600 parts based on 100 parts of the gelling agent. Since it has emulsifying power itself, it can be used without using an emulsifier, but if necessary, the amount is 200 parts or less, if pectin is used, it is 0.5 to 300 parts, and if guar gum compounds are used, it is 0.5 parts. ~300 parts, 0.5~ when using kappa carrageenan sodium salt
300 parts of sodium salt of iota carrageenan and (
or] 0.5 to 300 when using potassium salt
parts, 0.5 to 600 parts when using the sodium salt and/or ammonium salt of OMO, and 20 parts when using xanthan gum and locust bean gum.
It is preferably 0 parts or less, 0.5 to 300 parts when agar is used, and 0.5 to 300 parts when gelatin is used.

In the present invention, the amount of gelling agent added to 100 parts of the mixture of oily waste and water is 0.5 to 20 parts when using a water-soluble alginate, and 0.5 to 20 parts when using alginic acid propylene glycol ester. 0.5 to 30 parts if pectin is used, 0.5 to 30 parts if OMO sodium salt and/or ammonium salt is used, 0.5 to 30 parts if guar gum compound is used. 1 to 50 parts if kappa carrageenan sodium salt is used, 0.1 to 15 parts if kappa carrageenan sodium salt is used, and 0.2 parts if iota carrageenan sodium salt window and ('f, or) potassium salt are used. ~20 parts, 0.2-20 parts when using bovine suntan gum and locust bean gum, 0.02-40 parts when using agar, 0.5-40 parts when using gelatin. part is preferred.

Generally known gelling treatment according to each gelling agent using the gelling agent used in the present invention, oily waste, water, and if necessary a gelling reaction retarder, a weakly acidic substance, an emulsifier, etc. By gelling according to the method, the gelled product can be changed. For example, when water-soluble alginate, alginate propylene glycol ester guar gum, pectin, sodium and/or ammonium salts of OMO or kappa carrageenan sodium salt are used, a gelling agent or a gelling agent and optionally added. A gelled product can be easily obtained by mixing a mixture of the above-mentioned additives, oily waste, etc., and water at room temperature, and xanthan gum, locust bean gum,
If agar or gelatin is used, the gelled product can be obtained by heating and dissolving water to which agar or gelatin has been added at a predetermined temperature F'ffi, and then not mixing with oily waste.

For example, when using a water-soluble alginate and a polyvalent metal compound, the polyvalent gold compound is dispersed in oily waste, and the water-soluble alginate dissolved in water is added thereto and stirred to form a gelled product. Alternatively, both may be dissolved in water, the oily waste may be dispersed therein, and the other may be added thereto and stirred to form a gel.

When producing a gelled product by such a method, a good gelled product can be obtained as long as it takes time for the dissolved alginate and the polyvalent metal compound or polyvalent metal ion to mix uniformly, so that it is quickly soluble. Polyvalent metal compounds can also be used, and since the alginate is completely dissolved, the alginate can be used for loading rather than adding powder, and the time required for gelation can be shortened. Alginate propylene glycol ester, pectin, CM
When using the sodium salt and/or ammonium salt of O, the sodium salt of kappa carrageenan, the sodium salt and/or potassium salt of iota carrageenan, or the guar gum compound, the gelled product obtained by the above method is It is pudding-like to jelly-like, and oily waste can be disposed of as a non-flowable solid that is convenient to handle.

Next, the non-invention will be explained in detail by giving examples.

Example 1 100 parts of sodium alginate powder, 100 parts of calcium sulfate dihydrate, 12 parts of tripolyphosphate,
15 g of a formulation consisting of 50 parts of Noigen KA 141 (manufactured by Daiichi Kogyo Seiyaku α・Re, nonionic surfactant) was placed in a paper milk container of 14.300 ml of lacquer thinner waste liquid
After adding water 2001 to the mixture, the mixture was covered with a lid. Thereafter, the mixture was thoroughly shaken and left to stand for 1 hour, resulting in a purine-like gelled product.

Example 2 Compound filter CJg consisting of 100 parts of alginate propylene glycol ester and 150 parts of calcium citrate
was added to 150 g of tempura waste oil in a polyethylene container, 350 g of water was added, and the container was covered with a lid. After 9 days, when the mixture was sufficiently transferred and the apparatus was used at night, a pudding-like gelatinized product was obtained.

Example 3 Put 5 kg of waste engine oil and 1.5 ky of water into an empty kerosene can, and while stirring with a propeller stirrer, add 100 parts of sodium salt of kappa carrageenan and 20 parts of potassium chloride.
50 g of a mixture consisting of 1 part, 45 parts of Neugen ET 140 (manufactured by Daiichi Kogyo Seiyaku ■, nonionic surfactant) and 65 parts of sodium dodecylbenzenesulfonate were added.
Heated at 0°C. After 5 minutes, heating and stirring were stopped and the mixture was allowed to cool. After 2 hours, a gelatinous substance was formed.

Example 4 300 g of lacquer thinner waste liquid and 700 V of water were placed in an empty can, and a mixture 26 (1) consisting of 100 parts of iota-carrageenan sodium salt, 60 parts of calcium hydroxide, and 100 parts of Neugen EA141 was added.

After stirring for about 1 minute using a small stirrer, the mixture was left to stand overnight, and a pudding-like gelatinized product was obtained.

Example 5 6.6 g of a formulation consisting of 1ooL'6 of kappa carrageenan sodium salt, 20 parts of calcium tartrate, and 60 parts of Neugen WS 120 (m-manufactured by Kogyo Seiyaku N) was added to a mixture of 50 waste kerosene and 50 g of water. . After that, I washed it thoroughly and turned it on at night, and the purine-like gelatinized product did not change.

Example 6 10 g of a mixture consisting of 100 parts of pectin, 100 parts of magnesium carbonate, and 10 parts of Neugen ET 1401 was placed in a polyethylene bag, and 20 g of petroleum benzine and 8 parts of water were added.
0 g and shaken. - When I put it back in the night, a purine-like gelatinized substance changed.

Example 7 Plastic container waste 1 containing carbon tetrachloride as the main component
Add '160y, 2.4g of aluminum fluoride, and 2.0g of sodium lauryl sulfate, and while stirring with a wooden stick, add 140g of a 3% by weight aqueous solution of OMO's sodium salt. was added and stirred for 1 minute. After that, if you leave it to cool, it will become 30
After a few minutes, the purine-like gel was changed.

Example 8 Put 10.5 kg of waste quenching oil, 150 g of xanthan gum, and 150 g of locust bean gum into an empty kerosene can, then add 4.5 ky of water, and stir with a wooden stick until 90 ml.
Heated at °at. After 5 minutes of heating, stirring was discontinued. After that, the mixture was allowed to cool, and after 2 hours, a pudding-like gelatinized product was obtained.

Example 9 100 parts of hydroxypropylated guar gum, 5 parts of magnesium borate, 10 parts of Nruvit, and Neugen ET 80
(manufactured by Daiichi Kogyo Seiyaku Co., Ltd., non-ionic surfactant) 20y was put in a pot, and 350ml of tempura waste oil was added.
After adding 150.t. of water, stir gently with a household whisk, and then add 150.m of water. was added and stirred for 30 seconds. The mixture was transferred to a plastic bag and left to stand for 1 hour, resulting in a soft and stretchy gel.

Example 10 100 g of agar, 50 g of sodium dodecylbenzenesulfonate, 2.5 ky of waste cutting oil, and 2.5 kg of water were placed in a stainless steel container and heated to 85°C or higher while stirring with a propeller stirrer to dissolve the agar. After that, heating and stirring were stopped and the mixture was allowed to cool. After 5 hours, a hard and brittle gel was formed.

Example 11 Gelanan Op, 50 y of sodium dodecylbenzenesulfonate, 2.5 ky of waste cutting oil, and 2.5 kg of water were placed in a stainless steel container, stirred with a propeller stirrer, heated to 40'O or above, and gelatin was prepared. After dissolving the mixture, heating and stirring were stopped and the mixture was allowed to cool.

After 2 hours, a soft gelled material was obtained.

Claims (1)

[Claims] 1. A method for treating oily waste, which comprises dispersing the oily waste in water and then gelling it using a gelling agent.