JPS60232086A - Method for deodorizing and drying organic waste - Google Patents

Abstract

PURPOSE:To convert an organic waste into a digested or odorless dried useful material and give fertilizer and other useful materials, by inoculating the organic waste with bacillus stearothermophilus and carrying out cultivation in the presence of ferrous sulfate. CONSTITUTION:An organic waste, preferably poultry manure, hog manure, human waste, similar materials or an organic waste containing them is inoculated with thermophilic Bacillus stearothermophilus (FERM-P No.7587) and mixed therewith. Ferrous sulfate is then added to the organic waste, and cultivation is carried out at a high temperature, preferably 40-70 deg.C with aeration to give an odorless dried useful material. The amount of the above-mentioned ferrous sulfate to be added is preferably 1/1,000-1/10,000 the weight of the organic waste in the initial period of the cultivation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a process for dry decomposition and for providing the resulting products as fertilizers and other useful products.

The organic wastes used as raw materials in the present invention are chicken waste, pig urine, human urine and similar substances. It is also possible to optionally mix vegetable waste such as straw waste and sawdust with these to facilitate the handling of the raw materials.

The bacteria used in the present invention are Bacillus stearothermophilus.
m09fiy1u% [(Feikoken Contract No. 75g7), and its growth temperature range is qO~'700% growth temperature Sθ
At ℃, it is rod-shaped and produces spores. This bacterium is known and its mycological properties are as described in general academic texts. A convenient method for using this bacterium in the present invention is to mix equal amounts of sawdust and organic waste, adjust the moisture content to 70%, and then use B. Stearothermophilus is inoculated and mixed, and the mixture is cultured according to the method of the present invention. This bacterium (B,
Stearothermophilus) was cultivated during the practice of the present invention.
Even when it reaches a high temperature of θ°C, it hardly dies, and it can be used continuously as an inoculum for the next batch of raw materials, and as a result of culturing at high temperatures, the culture becomes a completely dried final product. make it possible to provide

As a characteristic feature of the present invention, ferrous sulfate is added to the raw material (organic waste) at the beginning of the culture at ///, 0θθ~i/io.
Add at a ratio of ooo (heavy electric standard). When chicken urine is used as a raw material, most of the odor is removed as a result of fermentation by this bacteria (B, allothermophilus), however, until the unpleasant odor peculiar to chicken urine is completely removed. It does not reach. However, the addition of ferrous sulfate according to the present invention makes the final product completely odorless (see @/table). Played by this invention
The most obvious effect is

Table 1 Continuous type is convenient as a fermentation apparatus for fermenting organic waste, i.e., fermentation raw material, to which ferrous sulfate is added, and the fermentation process is carried out once a day or once a day. An apparatus is advantageously used which makes it possible to sequentially supply raw materials from the feed port of the device at regular intervals and sequentially take out the odorless dry product from the discharge port after fermentation for an appropriate period, preferably 6 days. .

Although any device suitable for the above embodiment may be used, in the present invention, a microorganism continuous culture device devised by the present inventor [Jikko Shota A/29. ? Publication No. g: Utility Model Registration No. 1II10g29] is easy to use. The device of this invention consists of a rotating kiln.

The interior is divided into a number of vertical chambers by a wire mesh wall, and each central part of the front and back of the wire mesh wall has a communicating hole.
With the help of the propulsion plate in the kiln, the feed material moves sequentially along the communication holes and passes through all the chambers as the kiln rotates. In the meantime, fermentation is completed, and the fermented products are taken out from the discharge port at the rear end every day, starting from the 18th batch. When the apparatus i1 of this invention is used in the present invention, the number of wire mesh chambers is normally six, and fermentation is completed in six days. The size of the rotary kiln is approximately 2 mm or more in diameter, and the appropriate thickness of the material to be fed is within the wire mesh chamber. The smaller the amount of food supplied, the lower the height and thickness of the product, which increases the temperature of the product due to fermentation and may make fermentation difficult in winter.

In this case, wrap a heat insulating material around the outside of the ax run or
A or double kiln (using hot water) may be required.・Kiln rotation speed? Continue the main rotation at night, 2 to 3 times per hour. Ventilation and temperature control are achieved by blowing a small amount of air, and a ventilation fan can be installed at the raw material feed port to exhaust the air from the chimney. If the air is too strong, the temperature of the product may drop, so a household ventilation fan is appropriate. Evaporated moisture and odors are exhausted from the chimney, and no water droplets accumulate inside the device. Generally, the temperature does not rise above 70°C.

The product temperature reaches its maximum 3 to 1 days after preparation, and both sterilization and drying effects are achieved. Table 2 shows the product temperature (external temperature 10°C) and the moisture content in the culture when chicken meat is used as the raw material.

Table 2 As a result of adding ferrous sulfate according to the present invention, 5 oxidation during fermentation is promoted, and all odor components in the rt raw material are removed, rendering it odorless. Fermentation breaks down the raw materials and turns large lumps into fine powder. The odorless dry fine powder product of the present invention generally has a water content of 35% or less, so it does not stick to the palms of the hands and provides a smooth feeling. Therefore, there is no need to use a disintegrator for fertilizer products.

The texture effect of the organic fertilizer product according to the present invention is excellent and is 2 to 3 times higher than that of inorganic fertilizer application in many plant cultivations.
Give a percentage increase in revenue. Moreover, by using the fertilizer product according to the present invention for three years, it has been recognized that it eliminates the need for the use of good chemicals and inhibits the propagation of harmful bacteria even if they are attached.

Said Jikosho KA-/;29! Example 1 in the JUG publication describes a mode in which feedstocks consisting of urine and sawdust are mixed with an aerobic bacterium, Pseudomonas kaede, and fermented at a temperature of 33°C. Table 3 shows the results of a comparison between the use of Pseudomonas If and the B according to the present invention, and the use of Stearothermophilus in the chicken D<' treatment.However, in both cases, sulfuric acid was First iron was used.

(Table 3 Examples A rotary kiln with a diameter of 2.3 m, a length of 11 m, and a volume of SO@3 was used, and from the feed port S to 6 tons of chicken raw material were produced every day. A wire mesh chamber consisting of a wire mesh with a mesh size of j cm The total feed amount reached 30 tons.The ferrous sulfate addition rate to the chicken urine raw material was 3710OOC (based on weight).Kiln rotation speed -1
2-3 times per hour.

It also operated at night. After 6 days of fermentation, the contents of the first wire mesh chamber (fermented products) were taken out, and then products were taken out from the first and subsequent wire mesh chambers in sequence every day. The total nitrogen in the chicken stock was 3. ! ;! ; 2, but at the end of fermentation. It became gos.

The total product yield from the six wire mesh chambers was 1 g ton.

This product appears as a black dry powder and is completely odorless.

It was suitable for sale as fertilizer.

Claims (1)

[Scope of Claims] (1) A method for converting organic waste into an odorless dry useful substance by inoculating the organic waste with bacteria and culturing the bacteria under aeration at a relatively high temperature. 1. A method characterized in that it is Suderothermophilus (Feikoken Entrustment No. 75g7), and that the planer is cultured in the presence of ferrous sulfate. (2) The method according to claim 11, wherein the organic waste is chicken urine, pig's bed, human urine and urine, and similar substances, or organic waste containing them. (3) The method according to claim 11, wherein the culture temperature is 0 to 70C. (4) Ferrous sulfate is 1// of the weight of organic waste at the beginning of culture.
,0θθ~//10. The method according to claim 1, wherein the organic waste is added to the organic waste in an amount of θ00. (6) The method according to claim (1), wherein the odorless dry useful substance is a fertilizer.