JPH0947231A - Treating method for lee of syoutyuu - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a useful material having a high value-added by treating the lees of SYOUTYUU (low-class distilled spirits in Japan) in a pollution-free process. SOLUTION: A mixture of the lees of SYOUTYUU with a water content- adjusting material is treated with larvae of Musca domestica to obtain a biological material and digestion residue. The lees of SYOUTYUU to be used in the process is a SYOUTYUU waste solution having water content of >=90wt.% or a condensed SYOUTYUU lees having a water content of 30-70wt.%. As the water content-adjusting material, straw, bran, rice bran, hull, wood rubbish, poultry manure, etc., is preferably used by itself or as a mixture of them. In the case where the water content-adjusting material is poultry manure, the mixing ratio of poultry manure is preferably about 1-2 pts.wt. based on 1 pt.wt. of the SYOUTYUU lees. The amount of the inoculation of Musca domestica is preferably about 70-90mg per 100g of the medium. It can be raised at the ambient temperature of 25-30 deg.C. The emergence time is about 10 days. The obtained digestion residue is useful as an organic fertilizer or a soil modifier, and the chrysalises can be used as a feed material of high protein content.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for treating shochu lees by utilizing the life activity of flies.

[0002]

2. Description of the Related Art Currently, more than half of shochu lees are dumped in the ocean. Most of the rest is scattered or incinerated in the mountains. In addition, a technique is known in which shochu lees and chicken dung are mixed and fermented to be used as a fertilizer or a soil conditioner (Japanese Patent Publication No. 6-116).
No. 76). On the other hand, although not related to the treatment of shochu lees, it is also known to treat livestock excrement such as chicken feces with a fly to obtain a biological substance and a digestive residue (JP-A 6-1).
16073).

[0003]

[Disclosure of the Invention] The dumping of shochu lees into the ocean
It will be banned in the near future due to the London Convention. There is a limit to the spraying to the mountains, and incineration consumes a large amount of energy because 90% or more of the shochu lees are water. In the method in which shochu lees and chicken manure are mixed and fermented and the water is evaporated by the heat of fermentation, the heat of fermentation does not rise when a large amount of shochu lees having a high water content is mixed with chicken manure. For this reason, the processing amount of shochu lees is limited and inefficient. Further, the fermentation method inevitably becomes a batch method, and a long time is required for one treatment. The equipment is also large and requires a large treatment plant. Furthermore, the fermented products are poor in marketability because they only have low added value such as organic fertilizers or soil conditioners.

The present inventor has solved the above problems and aims to provide a method for treating shochu lees, which is pollution-free, has a low energy cost, and is capable of obtaining a high value-added product. There is.

[0005]

[Means for Solving the Problems] A method for treating shochu lees of the present invention which achieves the above-mentioned object is to treat a mixture of shochu lees and a water-conditioning agent with housefly (Musca domestica) larvae to obtain a biological substance and a digestive residue. It is characterized by getting. Further, the concentrated shochu lees can be prepared in the range of pH 5 to 7 and directly treated with the housefly larva without using a water-conditioning agent to obtain a biological substance and a digestion residue.

[0006]

DETAILED DESCRIPTION OF THE INVENTION Musca domestica is suitable for the housefly used in this method. As the shochu lees, the shochu waste liquid having a water content of 90% by weight or more may be used as it is, but depending on the purpose of the obtained product,
Use concentrated shochu lees with water content reduced in advance. The water content of the concentrated shochu lees is about 30 to 70%, preferably about 40 to 60%. Straws, bran, bran, fir shells, squeezed lees of sugar cane, wood chips, chicken manure, etc. may be used alone or in admixture as the water content adjusting material. The use of poultry manure is particularly desirable when it is desired to obtain organic fertilizer in the product. The mixing ratio of the shochu lees and the water content adjusting material cannot be specified because it varies depending on the water content of the shochu lees used and the type of water content adjusting agent. About 2 is desirable. When the concentrated shochu lees are directly treated with houseflies, the pH of the concentrated shochu lees is about 4 because it is too severe for the growth of housefly larvae. Prepare. The inoculation of the housefly to the prepared medium was carried out for 100 g of the medium,
About 70 to 90 mg (about 10 housefly eggs per 1 mg) is preferable. The breeding temperature is 25 to 30 ° C and the humidity is 20 to
It has a strong reproductive ability in a very wide range of 90% and pH 5-8. The growing period from egg to housefly is around 10 days. The obtained digestion residue is dehydrated and deodorized with dryness, and when it is used as an organic fertilizer or a soil conditioner, the microbial infection rate is significantly reduced. Chrysalis has a crude protein content of about 60%, a fat content of about 30, and contains all essential amino acids, and is as valuable as fish meal as a feed ingredient.

[0007]

[Example] 800g of concentrated shochu lees having a water content of about 40% were mixed with 1,700g of chicken dung to prepare a 2,500g medium, which was placed in a container. This medium is housefly (Musca dom)
estica) 2.2855 g was divided into four parts and inoculated. The breeding environment was room temperature of 30 ° C and humidity of 70%, and the temperature of the medium was about 32 ° C. On the 4th day, the presence of larvae on the surface of the medium was visually recognized. On the 5th day, larvae began to appear on the surface of the medium in an attempt to get out of the container to become pupae. The larva has a physical condition of about 13 mm, which is about 300 times the size of an egg. On the 6th day, it started to get out of the container. On the 7th day, the larvae that had come out of the container began to become pupae, and other larvae came out of the container one after another. On the 9th day, the larvae had come out of the container and all became pupae or pupae. The total amount of pupae obtained was 450 g on average. 10 digested medium
It was 80 g. The evaporated water content was 25%. The surface larvae of the larvae were better than those of the larvae grown in a medium containing only chicken dung without the use of shochu lees.

[0008]

INDUSTRIAL APPLICABILITY In the present invention, by the biological treatment of shochu lees,
It is possible to contribute to environmental conservation and acquire useful substances with high added value, and the following advantages can be obtained. . No environmentally harmful or useless items are produced, and it is pollution-free and can be processed at low energy cost. . The obtained digestion residue can be used as an organic fertilizer or a soil conditioner, and the biological material containing high protein can be used as a feed material.

Claims (6)

[Claims] 1. A method for treating shochu lees, which comprises treating a mixture of shochu lees and a water content adjusting agent with housefly (Musca domestica) larvae to obtain a biological substance and a digestion residue. 2. The method for treating shochu lees according to claim 1, wherein the water content adjusting material is chicken manure. 3. A method for treating shochu lees, characterized in that concentrated shochu lees are prepared in a pH range of 5 to 7 and treated with larvae of Musca domestica to obtain biological substances and digestion residues. 4. The method for treating shochu lees according to claim 3, wherein the pH is adjusted with charcoal. 5. A feed comprising a biological substance obtained by treating shochu lees with a housefly larva as an active ingredient. 6. An organic fertilizer, which comprises, as an active ingredient, a digestion residue obtained by treating shochu lees with a housefly larva.