JPH06165815A - Deodorant composition of domestic animal excreta - Google Patents

Abstract

PURPOSE:To prevent the deterioration of the deodorant with the lapse of time, to improve a deodorization effect and to accelerate the composting of excreta by adding and dissolving either or both of citric acid or malic acid to and in an aq. soln. consisting essentially of ferrous sulfate. CONSTITUTION:The ferrous sulfate contains an anhydrous salt or 1-, 4-, 5-, 7-hydrous salts and usually the 7-hydrous salt is used. The ferrous sulfate of a saturation concn. or below, ordinary ferrous sulfate and about 10 to 25wt.% ferrous sulfate as the 7-hydrous salt are incorporated into the stock sol. of the deodorant compsn. This stock soln. is sprayed to the domestic animal excreta by diluting the soln. to about 10 to 60 times. The citric acid or malic acid is added to the compsn. at 1/2 to 1/50 the content of the ferrous sulfate and 7-hydrous salt. At least one kind among magnesium sulfate, manganese sulfate and potash alum may be added to the deodorant compsn. These components activate the effect of microorganisms and accelerate the composing of the excreta. The compsn. may contain the components known heretofore, for example, L-ascorbic acid and live fruit juice of citrus fruits.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorant composition for alleviating a strong odor generated from manure which is inevitably generated in the livestock industry.

[0002]

2. Description of the Related Art In the livestock industry for raising pigs, cows and the like, a large amount of manure is produced by these animals. This manure is composted and used as an organic fertilizer. As a small-scale method, there is a method in which the fields are piled up in the field and composted, and in the medium to large scale, a large amount is dried and fermented. The odor generated from manure is not limited to dairy workers, but it also exceeds the limit that people can endure, especially in the summer, when livestock houses and composting plants are adjacent to houses, and the environment is too high. It is in a very bad situation.

Conventionally, an aqueous solution of a ferrous salt, mainly an aqueous solution containing mainly ferrous sulfate as a main component, has been sprayed on cow and pig manure,
It has been known to alleviate the odor and make handling of feces and urine easier. It was also known that this spraying can make the manure accumulated in the field relatively quickly into compost. However, the aqueous solution of ferrous salt is exposed to air and oxidized, and the active ingredient becomes insoluble in water and precipitates and precipitates to lose its effect.
It had to be used up in a short time, which was inconvenient for usability. Moreover, although the effect of odor reduction was recognized, it was not enough to convince the people in the surrounding houses.

In order to prevent the oxidation of the ferrous sulfate-based aqueous solution, a method of adding a small amount of L-ascorbic acid as a reducing agent has been devised, but the stability with time is only slightly improved. In addition, a method of mixing fresh juice of citrus fruits, which has been used for deodorizing household garbage for a long time for the purpose of improving odor, has also been proposed. This method has the effect of slightly reducing the smell of ammonia in manure. However, citrus, which is a raw material, is a natural crop, and because it is easily affected by the weather, variations in ingredients, poor yields, and instability in quality and supply are always present, which greatly affects quality and cost. was there.

[0005]

DISCLOSURE OF THE INVENTION The present invention mainly uses ferrous sulfate, which has been conventionally used for the purpose of alleviating a strong odor generated from manure (for example, pig and cow manure) inevitably generated in the livestock industry. An object of the present invention is to provide a deodorant composition that prevents the deodorant composed of an aqueous solution as a component from deteriorating with time, improves the deodorant effect, and promotes the composting of manure.

[0006]

DISCLOSURE OF THE INVENTION The deodorant composition for livestock excrement according to the present invention is prepared by dissolving either or both of citric acid and malic acid in an aqueous solution containing ferrous sulfate as a main component. It is characterized by being a thing.

Ferrous sulfate is an anhydrous salt, or 1,4,
Although there are 5 and 7 hydrates, it is usually convenient to use 7 hydrates as a raw material. The stock solution of the deodorant composition contains ferrous sulfate having a saturation concentration of 10 to 2 or less as normal ferrous sulfate heptahydrate.
It is suitable to contain about 5% by weight of ferrous sulfate. At the time of use, this stock solution is diluted about 10 to 60 times and sprayed on livestock excrement.

Citric acid or malic acid is ferrous sulfate.
It is expedient to add one-half to one-fifth of the heptahydrate.

At least one of magnesium sulfate, manganese sulfate and potassium alum may be added to the above deodorant composition. These activate the functions of microorganisms and promote the composting of manure. Further, the deodorant composition of the present invention may contain conventionally known components such as L-ascorbic acid or fresh citrus juice.

[0010]

Examples and Comparative Examples As an aqueous solution containing ferrous sulfate as a main component, samples having the following compositions were prepared. Sample 1: 5% by weight aqueous solution of ferrous sulfate-7 hydrate Sample 2: 20% by weight aqueous solution of ferrous sulfate-7-hydrate and 5% by weight of L-ascorbic acid Sample 3: 20% ferrous sulfate-7-hydrate Wt%, Sudachi juice 5
Wt% aqueous solution Sample 4: ferrous sulfate heptahydrate 7 wt% aqueous solution, citric acid 5 wt% aqueous solution Sample 5: ferrous sulfate heptahydrate 7 wt% aqueous solution 20 wt%, malic acid 5 wt% aqueous solution Sample 6: sulfuric acid ferric acid 20% by weight aqueous solution of 1 iron-7 hydrate and 5% by weight oxalic acid Sample 7: 20% by weight of ferrous sulfate-7 hydrate, citric acid 1.
0% by weight, L-ascorbic acid 0.4% by weight, oxalic acid 0.4% by weight, wood vinegar solution 5% by weight, magnesium sulfate 5% by weight, manganese sulfate 3% by weight, potassium alum 1% by weight
Aqueous solution

Table 1 shows the properties of the liquids at the time of preparation of Samples 1 to 7 and after 50 days. Sample 1 which is an aqueous solution of ferrous sulfate only
And sample 6 which is an aqueous solution of ferrous sulfate and oxalic acid is 50
A large amount of precipitate is formed after a day, and the stability with time is poor.

[Table 1]

[0012]

[Test Example 1] Approximately 1 kg of cow excrement within 1 hour after being excreted, 50 ml each of the sample 2, 3, 4, 5 and 7 diluted 40 times was sprayed, and after 30 minutes, the excrement was excreted. While stirring, spray 100 ml of 40-fold diluted solution of the sample, and after 5 minutes of the first spray, 5 minutes after the second spray and 24 hours after, the results of odor intensity and appearance were shown together with the results of untreated excrement. 2 shows.

[Table 2]

The odor intensity evaluation criteria are as follows. Odor intensity 1: A slight odor of manure is felt about 50 cm downwind of the sample, and the odor is almost recognizable as manure when approaching about 5 to 10 cm from the sample. Odor intensity 2: A state in which a fecal urine odor is felt at a position about 50 cm downwind of the sample, and a odor with no aversion is felt when approaching about 5 to 10 cm from the sample. Odor intensity 3: It is located about 50 cm downwind of the sample, and the odor of feces and urine can be clearly recognized. When approaching the sample, there is a feeling of aversion but no vomiting. Odor intensity 4: Located about 50 cm downwind of the sample, feeling a disgusting odor, and when approaching the sample, feeling a strong odor with a vomiting sensation. Odor intensity 4: Located about 50 cm downwind of the sample, feeling a strong odor with aversion, and when approaching the sample, a strong odor with a strong vomiting and irritation to the eyes.

The odor intensity is evaluated based on the sensitivity of the above odor condition to the human sense of odor.
There were 3 boys aged 0 to 35 and 40 to 45 years old, and they were from people other than dairy workers (because dairy workers have a bad smell of work). The odor-sensing test of the sample is conducted between the sample and the draft device, with the draft device on one side of the room and the window on the opposite side so that the odor of the sample always flows in one direction. It was In order to recover the tired odor, we were located on the windward side of the sample, sucked in fresh air, removed the fatigue, and evaluated the next sample.

Sample 1 as well as untreated
(Comparative Example), Sample 2 (Comparative Example), Sample 3 (Comparative Example) and Sample 6 (Comparative Example) Sample 4 (citric acid addition example), Sample 5 (malic acid addition example) and sample 7 (Citric acid and other addition examples) has reduced odor intensity.

[0016]

[Test Example 2] Fecal rich matter excreted by 27 dairy cows and accumulated on the floor (about 50 kg of domestic sawdust per dairy cow is spread on the floor, and manure is mixed with sawdust every time the cow moves. (Part of the urine is absorbed by sawdust.)
Morning (8-9pm), daytime (13-14pm), night (18-1)
(9 o'clock) three times, a 40-fold diluted solution of the deodorant composition sample is sprayed with a jiroro etc. by 230 ml each around the dung-rich part of one cow and collected by a unicycle etc. The height was piled up in a mountain shape and a vinyl sheet was hung on it to be used for investigation of the change over time. On the 1st, 7th, 30th and 50th days, the odor and appearance of the surface of the cow dung deposit when the vinyl sheet was taken, and the odor and the appearance when the cow dung deposit was dug about 20 cm were observed. . Dairy workers who used cow dung compost judged whether it could be used as compost. The results are shown in Table 3.
And shown in Table 4.

[Table 3]

[Table 4]

The cow dung using the deodorant composition of the present invention was not only significantly improved in odor, but was ready for use as compost on the 50th day.

[0018]

EFFECTS OF THE INVENTION It is possible to prevent a conventional deodorant comprising an aqueous solution containing ferrous sulfate as a main component from deteriorating with time, improve the deodorizing effect, and promote composting of manure.

Claims (2)

[Claims] 1. A deodorant composition for livestock excrement, characterized in that one or both of citric acid and malic acid are added and dissolved in an aqueous solution containing ferrous sulfate as a main component. 2. The livestock manure deodorizing composition according to claim 1, wherein at least one of magnesium sulfate, manganese sulfate and potassium alum is added.