JPH1179875A - Simultaneous treatment of old paper and garbage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an organic fertilizer at a low cost, by cutting old paper into pieces of paper, mixing the pieces of paper with garbage with stirring, using a mixture in which water contained in the garbage is absorbed in the pieces of paper as a proliferation substrate for a microorganism, proliferating the microorganism at a temperature suitable for proliferation, decomposing and composting the mixture. SOLUTION: Old paper such as old paper of newspaper, old paper of paperboard, etc., is cut by a shredder, etc., into pieces of paper of 3-50 mm, mixed with approximately equal weight of garbage having 75-90 wt.% of water content and the water content of the whole mixture is adjusted to 45-50 wt.%. Then the mixture is used as a proliferation substrate for a microorganism, maintained at 45-50 deg.C suitable for the proliferation of the microorganism, stirred three to five times daily and decomposed for 3-7 days to give an organic compost. Escherichia coli, Bacillus subtilis or a decomposing bacterium belonging to the genus Micrococcus, Staphylococcus, etc., is used alone or mixed and used as the microorganism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for simultaneously processing waste paper and garbage.

[0002]

2. Description of the Related Art Conventionally, used paper such as newsprint, corrugated cardboard, and magazines has been incinerated or landfilled as waste, but in recent years, from the viewpoint of effective use of resources, it has been sorted and recovered, and recycled. Became frequent. Recycling of waste paper is typically performed in the process of sorting → disaggregation → steaming → fine selection → washing and separation → bleaching → washing → recycled pulp, where books and magazines are cut into pieces of paper with a shredder or paper cutter. Deflocculation was carried out using pulpers, high-speed disintegrators, refiners, and beaters. And recycled pulp is paperboard, dustpaper, newsprint,
Used as a raw material for medium-quality paper.

[0003] However, at present, all of the sorted and recovered waste paper is not recycled, and rather, it is currently being sold to foreign countries without paying for the recycling in Japan.

On the other hand, garbage and business garbage from general households are sorted and collected and incinerated or landfilled, and there is hardly any effective method for actively recycling them as effective resources. For example, raw garbage
Attempts have been made to compost it by mixing it with horse dung, but its utilization is low.

[0005]

As described above, it is desired to develop a more effective treatment method for both used paper and garbage from the viewpoints of effective utilization by recycling resources and material circulation in ecosystems.

In view of this situation, the present inventors have conducted intensive studies on a method for treating waste paper and garbage, and as a result, have found that waste paper and garbage can be simultaneously decomposed with microorganisms to obtain useful compost. It was completed.

That is, according to the present invention, waste paper is cut into paper pieces, and the paper pieces are stirred and mixed with garbage to obtain a mixture, wherein water contained in the garbage is absorbed by the paper pieces, A method for simultaneously treating waste paper and garbage, wherein the mixture is used as a growth substrate for microorganisms, and the microorganisms are grown at a temperature suitable for growth to decompose the mixture to form organic compost. It is.

[0008]

DETAILED DESCRIPTION OF THE INVENTION The used paper to be treated in the present invention may be any used paper such as used newspaper, used magazine, used printing paper, used corrugated paper, or used old paperboard. However, vinyl and poly-coated products and papers that have been water-resistant with chemicals are excluded.

Waste paper is cut into paper pieces by shredding or paper cutter. The size of the paper is 3mm to 50mm
It is preferred that

The garbage that can be treated by the present invention may be either household garbage or business garbage. For example, food garbage, wild mountain weeds, fish small bones, eggshell,
This includes livestock dung and the like.

In the processing method of the present invention, the waste paper and the garbage are mixed with stirring. The stirring and mixing is performed, for example, by using a processor manufactured by Ando Corporation or a commercially available garbage processor. The mixing ratio of the paper pieces and the garbage is not particularly limited, but a weight ratio of approximately 1: 1 is preferable in consideration of the growth conditions of the microorganisms and the like.

The garbage usually contains 75 to 90% by weight of water, and the water contained in the garbage is absorbed by the paper pieces by stirring and mixing. The water content of the mixture as a whole is adjusted in the range of 50 to 60% by weight from the viewpoint of the growth of microorganisms. At the time of startup or when the amount of raw garbage is small, water is supplied from outside.

[0013] Such a mixture is used as a substrate in the growth of microorganisms. The type of microorganism used is Eche
richia coli, Bacilus subtilis, or Micrococcu
s, Straphylococcus, and decomposing bacteria belonging to the genus Aerobacter. These degrading bacteria can be used alone or in combination. The microorganisms can be added to the mixture of paper pieces and garbage, or they can be added to the paper pieces before mixing the paper pieces and garbage.

The growth of the microorganism is carried out preferably in a temperature range of 45 to 50 ° C. in consideration of the efficient growth conditions. In addition, there is self-heating during decomposition, but when the temperature inside the apparatus is insufficient due to a seasonal temperature difference or the like, the temperature is maintained in the above-described temperature range using a heater.

The decomposition of the mixture by the growth of microorganisms is preferably carried out for 3 to 7 days. During the decomposition process, usually 1
The mixture to be treated is stirred several times a day, for example 3 to 5 times (once, for example 3 to 5 minutes).

Although the treatment method of the present invention can be carried out in a batch system, it is more usually carried out in a continuous system.

According to the treatment method of the present invention, an excellent organic compost can be obtained. The present invention also provides such an organic compost.

Such organic compost is useful for cultivating cucumber, squash, tomato, flowering trees, etc., and all of them have higher plant height and higher yield compared to chemical fertilizers.

[0019]

The present invention will be described in more detail with reference to the following examples. Example 1 [Batch-type example] Waste paper separated and collected from a general household was shredded (thin paper such as newspapers and magazines) and agricultural cutters (cardboard) using a newspaper 3 mm and a cardboard 5 mm.
Was cut into pieces of paper. For 1 kg of this waste paper, Aerobact
An appropriate amount of a mixture of the germs and Escherichia was added and mixed, and the mixture was further mixed at a rate of 0.3 kg of water. Separately, garbage (main component; organic matter) (moisture content 90%) collected from general households is 1k per 1kg of the paper piece.
g, and mixed with stirring using a stirrer. The total water content after mixing was 65%. The treatment was performed for 5 days while maintaining the temperature in the range of 40 to 50 ° C.
During this time, a stirring treatment was performed five times a day. As a result of this treatment, 1.1 kg / day of organic compost was obtained. When the compost was analyzed at Mitoyo Agricultural Improvement Office, Kagawa Prefecture, N = NH ₄ ⁺ =
50.3 mg / 100 g, NO ₃ ⁻ = 76.8 mg / 100
g, P = 521.9 mg / 100 g, K = 1838 mg
/ 100 g. The obtained organic compost was fertilized on a cultivation floor of cut flowers (lily, daffodils, chrysanthemums) and the like, and grown. As a result of comparative cultivation of the non-application plot in the experimental field of Ando Co., Ltd., the application plot increased 1.5 times in the non-application plot. In addition, revitalize the soil, quickly compost and decompose organic matter such as roots and hair roots of the previous crop remaining in the soil, and the cultivated soil on the applied land becomes surprisingly soft and soft, the rooting of plants becomes vigorous, and measures against continuous cropping failure are taken. The effect was seen.

Example 2 [Example of continuous type] Waste paper separated and recovered from ordinary households was cut into 50 mm pieces using an agricultural cutter. A proper amount of a mixture of Aerobacter and Escherichia was added to 1 kg of the used paper and mixed, and then 0.3 kg of water was added thereto. Separately, garbage (main component; organic matter) (moisture content: 90%) collected from a general household was added at a rate of 1 kg to 1 kg of the above-mentioned paper piece, and stirred and mixed using a stirrer / processor. The total water content after mixing was 65%. Temperature between 40 and 5
The treatment was performed for 360 days while maintaining the temperature in the range of 0 ° C. During this time, the stirring treatment was performed for about 2 minutes every 30 minutes by automatic operation. During this treatment, 5 kg of compost was collected daily, and at the same time, 5 kg of waste paper and 5 kg of garbage and weeds (weight ratio of garbage: weed = about 1: 1) were added to the processing machine. In order to investigate the change in the components of the obtained organic compost,
Per 5 times of the recovery portion, was analyzed by Kagawa Mitoyo Agricultural ^{_{establishments, NH 4 + = 25.1mg / 100g}} , NO 3 - =
38.4 mg / 100 g, P = 399.1 mg / 100
g, K = 1988 mg / 100 g. The obtained organic compost is applied to flowering trees, vegetables (tomatoes, eggplants), etc. as a primary manure and plowed on cultivated soil. As a result, the sweetness of tomatoes increases,
Moreover, the yield was large, and the cut flowers had a long plant height and many flowers.

[0021]

According to the present invention, a method for simultaneously processing waste paper and garbage can be obtained. In addition, by such treatment, a useful organic fertilizer can be obtained at low cost. By using such an organic fertilizer, pesticide-free agricultural products and forest products are produced in agriculture and forestry, and nutritious products can be supplied as health foods. Waste paper and garbage will eventually be returned to the soil of Japan as organic fertilizers, which is preferable from the viewpoint of ecological material circulation.

Claims (5)

[Claims] 1. A waste paper is cut into paper pieces, and the paper pieces are stirred and mixed with garbage to obtain a mixture, wherein water contained in the garbage is absorbed by the paper pieces, and then the mixture is converted into microorganisms. A simultaneous treatment method for waste paper and garbage, wherein the mixture is decomposed into organic compost by growing the microorganism at a temperature suitable for growth by using the microorganism as a growth substrate. 2. The method according to claim 1, wherein the waste paper and the garbage are mixed at a weight ratio of 1: 1 and the water content of the mixture is adjusted to a range of 45 to 50% by weight. 3. The degradation of the mixture by the growth of microorganisms is reduced by 45%.
The method according to claim 1, wherein the method is carried out while maintaining the temperature in the range of ~ 50 ° C. 4. Decomposition of the mixture by the growth of microorganisms is 3 to
The method according to claim 1, wherein the method is performed for 7 days. 5. An organic compost obtained by the method according to claim 1.