JP3751530B2 - Waste oil treatment agent and waste oil treatment method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a treatment agent for waste oil or its inclusions discharged daily from food processing factories, hotels, restaurants, homes, etc., and a method for treating waste oil or its inclusions.
[0002]
[Prior art]
Conventionally, waste oil has been treated by solidifying with an absorbent or the like and incinerating it, or by biologically treating it in a sewage treatment tank.
However, incineration requires high fuel costs, and bioactive treatment requires a long time, and waste oil disposal has been extremely difficult.
In addition, dairy wastes are left in the waste pool for a long time, and the oil floating on the upper surface decays and gives off a strange odor. there were.
[0003]
[Problems to be solved by the invention]
In this invention, it made it the subject to contact waste oil with microorganisms, to assimilate, decompose | disassemble to carbon dioxide gas and water, and to make a residue into compost and to circulate cleanly in nature.
[0004]
[Means for Solving the Problems]
In the present invention, inoculated and cultured actinomycetes or moss in a medium containing one or more of livestock excrement, food waste, sludge, rice husk, straw, bark, paper or other actinomycetes or moss medium material Actinomycetes or moss growth medium was used as a waste oil treatment agent. By spraying this waste oil treating agent on the waste oil surface of the waste pool of the dairy product and immediately starting the decomposition of the waste oil, it is possible to eliminate the off-flavor generated by the oil rot.
Further, in the present invention, inoculation and culture of actinomycetes or / and moss in a medium containing one or more of animal manure, food waste, sludge, rice husk, straw, bark, paper and other actinomycetes or / and moss medium materials Disperse the waste oil treatment agent consisting of the resulting actinomycetes and / or moss growth medium into a waste oil waste pool of a food processing factory such as a tempura factory, decompose the waste oil, and make the remaining treated product compost Can do.
In the present invention, animal dung, food waste, sludge, rice husk, straw, bark, paper, other actinomycetes or / and fungi medium containing at least one actinomycete or / and fungi medium, actinomycetes or Inoculate and cultivate moss, add waste oil to the resulting actinomycetes or / and moss growth medium, mix or absorb, and culture, so that the oil can be contributed by actinomycetes or / and moss. And was able to eliminate waste oil.
[0005]
In general, when waste oil is treated with microorganisms, it is decomposed into a water-soluble polymer organic acid and glycerin by microbial lipase in an aqueous solution, and this is purified by treating with activated sludge.
In contrast, in the present invention, solid-phase actinomycetes or / and moss growth medium and waste oil are contacted, solid-phase actinomycetes or / and moss growth medium and waste oil are mixed, or Impregnating oil, bringing oil into direct contact with actinomycetes or / and mosses, causing actinomycetes or / and moss to decompose and assimilate the oil into carbon dioxide and water. It can be processed with almost no organic acid or glycerin left.
[0006]
The preparation of the actinomycetes or / and moss medium used in the present invention is important, and it is necessary to make the actinomycetes or / and the moss culture medium efficiently decomposed according to the oil quality of the waste oil.
The actinomycete or / and moss medium may be any material as long as actinomycetes or / and moss grow well, but livestock excrement such as chicken dung, cow dung, pig dung, etc., food waste, manure processed products and food factories The sludge etc. are the basis, and the actinomycete or / and moss culture medium is prepared by mixing materials that improve air permeability, such as papers that have been applied to rice cake, bark, and shredder.
[0007]
About 0.5 to 10% quick lime, calcium compounds such as calcium carbonate and / or sodium compounds such as sodium bicarbonate and / or potassium compounds such as potassium phosphate and incineration ash containing various salts are added to this medium and mixed. In addition, the pH of the medium can be maintained and adjusted to 7.2 to 7.8 even during the decomposition of the waste oil.
[0008]
As actinomycetes, any of high temperature actinomycetes, medium temperature actinomycetes, and low temperature actinomycetes can be used singly or in combination. For example, the following actinomycetes are exemplified: Streptomyces griseolus IFO 12777, Streptomyces fungicidicus IFO 13344, Streptomyces thermophilus ATCC 19822 etc.), Nocardia genus (Nocardia erythropolia IFO 12682 etc.), Micromonospora genus (Micromonospora purpures ATCC 15835 etc.), Actinomyces genus (Actinomyces griseoruber ATCC 12466 etc.), Actinobifidacho 12 ), Thermoactinomyces genus (Thermoactinomyces glaucus IFO 12530 and the like), Thermomonospora genus (Thermomonospora viridis IFO 12207 and the like) and the like.
As the moss, bacteria of any genus may be used as long as they can decompose oil, but examples include Penicillium genus (Penicillium chrysogenum IFO4626 etc.), Aspergillus genus (Aspergillus niger IFO4407, Aspergillus awamori IFO4033, Aspergillus Candidas IFO4311 etc.) Etc.
[0009]
The inoculum used in the present invention may be only one of actinomycetes and / or moss, but two, three or four species selected from high temperature actinomycetes, medium temperature actinomycetes, and low temperature actinomycetes. The above may be used, and Aspergillus niger or the like may be mixed therewith.
The inoculum or mixed inoculum is suspended in water, sprayed on cow dung medium, and sufficiently grown in culture for about 5 to 15 days with stirring at about 25 to 35 ° C. about 1 to 3 times a day. The proliferated one can be used as an inoculum for the main culture while maintaining the medium.
The inoculum obtained here is used as the inoculum of the first waste oil decomposition treatment medium. However, when the waste oil is continuously decomposed, take a part of the digested medium and use it as the inoculum. You can also.
[0010]
As actinomycetes or / and moss culture medium in the present invention, cow dung, chicken dung, pig dung, food waste, sludge, etc. are basically used, and rice bran, bark, straw, paper, etc. in order to improve the air permeability. A mixture of these is used.
For example, a mixture of 100 L of cow dung with 50 L of rice bran and 50 L of straw is generally acceptable.
The medium inoculated with actinomycetes and / or moss inoculum is occasionally stirred and cultured for about 5 to 15 days. The whole is well dried and contains a large amount of actinomycetes and / or moss. It becomes an excellent waste oil treatment agent.
The actinomycetes and / or moss growth medium obtained here becomes the waste oil treating agent of the present invention. If this waste oil treatment agent is produced in large quantities and then put into a waste oil pool or a waste liquid pool of a food manufacturing plant where waste oil has floated, the dried waste oil treatment agent spreads over the top surface and comes in contact with, absorbs and absorbs waste oil. Fungi and / or moss begin to decompose immediately, and decompose and assimilate the oil.
[0011]
In addition, when there is a large amount of oil such as a waste oil pool, a large amount of dried waste oil treatment agent is added, the waste oil is absorbed, and occasionally stirred with a tiller, etc., so that the oil is removed in about 5 to 15 days. Will be able to be used as compost.
[0012]
Oil that emerged from waste milk etc. immediately starts to spoil and emits a strange odor, but if the waste oil treatment agent of the present invention is sprayed, the dry powdered medium spreads across the surface and contacts and absorbs waste oil, Starting with the decomposition of the oil, the odor disappears and the medium settles, so that the whole can be aerated, mixed with charcoal powder, mixed, the sludge floated, and the wastewater flowed down and separated.
[0013]
When recovering waste oil and processing a large amount of waste oil, another method is taken.
As a device for cultivating actinomycetes and / or moss, a culture tank equipped with an aeration device and a stirrer can be mentioned, but in order to treat a large amount of waste oil, it is covered with a pool and can be equipped with a stirrer. A concrete culture tank is good.
[0014]
Put one or more actinomycetes and / or moss medium material in the culture tank or culture tank, add quick lime or incinerated ash, etc. if necessary, spray water if necessary, and stir well. Prepare by adjusting the water content of the medium to 50-60%.
[0015]
Sprinkle actinomycetes or / and moss as an inoculum that is newly produced or used in circulation, stir about 1 to 3 times a day, and after 5 days, slightly dry, actinomycetes or / And the state that the moss has fully propagated is observed.
[0016]
Examples of the waste oil recovered and processed in the present invention include waste oil from food production such as dairy products and oily foods, waste oil from machine factories, and wax from waste processing plants such as a brazing plant. Can be decomposed.
[0017]
Waste oil is added in an amount of 1 to 30 kg, preferably about 5 to 15 kg, with respect to 100 kg of the bacterial growth medium in a slightly dried state in which actinomycetes and / or mosses are sufficiently propagated.
The added waste oil is immediately absorbed into the actinomycetes or / and moss growth medium as it is or with stirring, and fermentation begins.
During fermentation, it is preferable to stir about 1 to 3 times a day to improve air permeability and promote fermentation.
[0018]
The number of days of waste oil decomposition varies depending on the type of waste oil, but the waste oil in dairy factories decomposes fairly quickly, and is almost decomposed in 5-7 days.
In addition, because the waste wax in the brazing plant is solid, it takes two to three weeks to decompose even if mixed well.
[0019]
The same waste oil or another waste oil can be added again to the actinomycetes and / or moss growth medium after the waste oil decomposition treatment, and the decomposition treatment can be performed.
This repeated decomposition treatment can be carried out as long as the ability of actinomycetes and / or moss has the ability, but when used about 5 to 10 times, the waste oil is treated with a new actinomycetes or / and cocoon growth medium. It is good to do.
[0020]
The used actinomycetes and / or cocoon growth medium can be used as excellent compost as it is.
[0021]
[Inspection method for degree of degradation of waste oil]
In the examples, when the degree of reduction of waste oil was examined, the reduction in the amount of various fatty acids that are constituents of the oil was measured.
The waste oil and the culture medium decomposed in the present invention were separately subjected to Soxhlet extractors to extract lipids, saponified lipids, and the ether extracts were subjected to gas chromatographs, respectively.
Next, examples will be described.
[0022]
[Example 1]
A concrete culture tank having a height of 1 m and 1 m × 5 m (all inside) is made indoors, and a stirrer for stirring the medium is attached to the upper side so as to be lowered.
In this culture tank, 100 L of dried cow dung and 50 L of red bean paste and 50 L of red bean paste are mixed, and 3 kg of slaked lime is further mixed and put to a height of 50 cm in the culture tank.
[0023]
Separately, cow dung was inoculated with Streptomyces fungisidecus IFO 13344, cultured for 7 days as a seed fungus, sprayed on the medium in the above culture tank, the whole was thoroughly stirred with a stirrer, and after 7 days 1 Stir twice and culture to obtain actinomycetes growth medium. The actinomycete growth medium obtained here becomes the waste oil treating agent of the present invention as it is.
[0024]
When 20 L of waste milk was poured into the actinomycetous growth medium in the culture tank, the medium absorbed the waste milk. Therefore, the whole was stirred, then stirred twice a day, cultured for 5 days, and decomposed.
[0025]
Here, 5 g of waste milk before treatment and 50 g of medium after decomposition for 5 days (corresponding to 5 g of waste milk treated) were treated according to the above [Method for Degradation of Waste Oil Decomposition], and each gas chromatograph was plotted. It was shown in 1.
As a result, almost no high molecular weight fatty acid was found, and it was found that milk fat was almost assimilated by the decomposition treatment of the present invention.
[0026]
[Example 2]
The actinomycete used for the inoculum is changed to Streptomyces glyceolus IFO12777 and treated in the same manner as in Example 1 to obtain an actinomycete growth medium.
To this medium, 10 kg each of wood wax, whale wax, and honey wax was added separately, stirred well, the whole was stirred, then stirred once a day, cultured for 16 days, and decomposed.
[0027]
Here, 5 g each of wood wax, whale wax, and honey wax before treatment were treated according to the above-mentioned [Inspection Method for Degradation of Waste Oil], and each chromatograph is shown in FIG.
Further, 25 g of each medium decomposed for 16 days (corresponding to 5 g of each wax treated) was treated according to the above [Inspection Method for Degradation of Waste Oil], and each gas chromatograph is shown in FIG.
2 and 3, it can be seen that C ₁₈ is almost lost even in the case of wood wax, whale wax, and honey wax, and is considerably utilized by the decomposition treatment of the present invention.
[0028]
【The invention's effect】
In the present invention, waste oil is added to actinomycetes or / and moss growth medium in which a large amount of actinomycetes or / and mosses are grown on actinomycetes such as livestock dung and / or moss culture media, and the oil is decomposed. I was able to make it.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram showing a gas chromatograph of fatty acid composition before and after treatment of waste milk in Example 1 of the present invention.
FIG. 2 is a diagram showing a gas chromatograph of fatty acid composition before processing wax, wax, and honey wax in Example 2 of the present invention.
FIG. 3 is a diagram showing a gas chromatograph of fatty acid composition after treatment of wood wax, whale wax, and honey wax in Example 3 of the present invention.

Claims (1)

Streptomyces griseolus IFO 12777 was inoculated into a medium mixed with animal manure, rice husk, and straw , cultured, and the resulting growth medium was brought into contact with waste oil or waste oil-containing material, and cultured while stirring. A method for treating waste oil, characterized by decomposing and assimilating .

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