KR101564349B1 - Fermentation aid mixture for garbage disposal, method for producing the same and garbage disposal method utilizing the mixture - Google Patents

Abstract

Disclosed is a method for manufacturing a fermentation mixture for the treatment of food waste wherein the method is able to improve a moisture control function, increase an activity of aerobic fermentation micro-organisms, increase an activity of moisture contained by a fermentation object and in addition, induce a rapid discharge of moisture inside the food waste and accordingly, the method is able to further improve a fermentation efficiency compared with a conventional method. The method for manufacturing a fermentation mixture comprises: a fermentation aid preparing step of preparing a fermentation aid for the treatment of food waste; a mix step of preparing a pile of a dried mixture by mixing a dehydrated food waste cake having 45 to 65% of a moisture content with the fermentation aid for the treatment of food waste and a Bacillus bacteria culture medium for the fermentation of an organic waste material; and a fermentation step of preparing a fermentation mixture by fermenting the pile of the dried mixture for 15 to 25 days wherein the fermentation aid in the mix step accounts for 9.4 to 10.5% of a weight of the dehydrated cake; and the Bacillus bacterium culture medium accounts for 1.111 to 1.875% of a weight of the dehydrated cake and wherein the fermentation aid comprises: 50 to 70 parts by weight of a moisture control agent; 10 to 30 parts by weight of a red clay; 5 to 15 parts by weight of a zeolite and 3 to 7 parts by weight of an activated carbon.

Description

FIELD OF THE INVENTION The present invention relates to a fermentation mixture for food waste disposal, a method for producing the fermentation mixture, a food waste treatment method using the fermentation mixture, a method for producing the same, and a garbage disposal method using the mixture,

The present invention relates to a fermented mixture for treating food waste, a method for producing the same, and an improvement of a method for treating food waste using the same.

Waste foods are dehydrated to below a certain water content and then treated by incineration, recycling, landfilling, and marine dumping. In recent years, the importance of disposing of food waste has increased as international conventions prohibit marine dumping of food waste.

It is desirable to recycle waste food rather than dispose of it, since it is worth recycling to fuel or fertilizer after it is dried.

The prior art related to food waste disposal is disclosed in Japanese Laid-open Patent Publication No. 10-2013-0130413 entitled " Disintegrated Fungal Composition for Extracting Food Waste and Its Application, Inventor: Lim Wan Taek et al., Hereinafter referred to as " And the like.

The present invention relates to a composition for destroying food waste, comprising a decomposition microorganism composition for destroying food waste comprising microorganisms and a sub ingredient, and a composition containing the microorganism and the sub ingredient, Disclosed is a degradative microorganism composition for extinction of food waste and its application. According to the prior art such as the present invention, recycling of food waste is difficult.

In addition, rice hulls or sawdust for moisture control are put in a fermenter, the culture liquid, complex bacteria and molasses are respectively added to chaff or sawdust in an appropriate amount, and an impeller and an oxygenator, which are stirring devices in the fermenter, are intermittently operated, Although the technology for treating waste has been known, it is disadvantageous in that it is not suitable for treating food waste generated in large quantities due to low fermentation efficiency only by moisture control.

 When recycling food waste as fertilizer, it is important to reduce the salt concentration. The salinity is proportional to the water content of the dehydrated cake after dehydration, since salinity is generally present in the water in wet organic wastes.

If the water content of the dehydrated cake is high, aerobic fermentation becomes difficult, and the fermentation period becomes longer and the quality of the produced compost is lowered. To solve this problem, the dehydration cake which is already dewatered is mixed with sawdust or biomass to control the salt concentration. However, it is not enough to increase the fermentation efficiency only by mixing sawdust or biomass with sawdust or biomass . It usually takes about 40 to 50 days to crush, dehydrate and compost food waste to make compost.

An object of the present invention is to provide a fermentation mixture for food waste treatment which can not only have a moisture control function but also improve the treatment efficiency of food waste.

Another object of the present invention is to provide a new type fermentation mixture for food waste disposal which can make a low cost and which has not existed before.

It is still another object of the present invention to provide a food waste disposal method capable of improving fermentation efficiency.

The method for preparing a fermented food preparation for food waste according to the present invention comprises the steps of preparing a fermentation auxiliary material for preparing a fermentation auxiliary material for food waste treatment; A mixing step of mixing the fermentation auxiliary material for food garbage disposal and the culture medium of Bacillus bacteria for fermentation of organic waste into a food waste dewatering cake having a moisture content of 45 to 65% to form a mixture drying pile; And a fermentation step of fermenting the mixture pile for 15 to 20 days to produce a fermentation mixture,

Wherein the fermentation auxiliary material in the mixing step is 9.4 to 10.5% of the weight of the dehydrated cake, the culture liquid of Bacillus bacteria is 1.111% to 1.875% of the weight of the dehydrated cake,

The fermentation auxiliary material,

50 to 70 parts by weight of a moisture control material, 10 to 30 parts by weight of loess, and 5 to 15 parts by weight of zeolite.

Preferably, the moisture regulator is a dry bark, sawdust, rice hull or compost having a water content of 15 to 30%.

At times, the moisture control material may be a mixture of two or more of dry bark, sawdust, rice hull and compost with a water content of 15 to 30%.

The method of treating food waste according to the present invention comprises: preparing a fermentation auxiliary material for preparing a fermentation auxiliary material for food waste treatment; A mixing step of mixing the fermentation auxiliary material for food garbage disposal and the culture medium of Bacillus bacteria for fermentation of organic waste into a food waste dewatering cake having a moisture content of 45 to 65% to form a mixture drying pile; And a fermentation step of fermenting the mixture pellet for 15 to 20 days to produce a fermentation mixture, wherein the fermentation auxiliary material in the mixing step is 9.4 to 10.5% of the weight of the dewatered cake, 1.111% to 1.875% by weight of the fermentation auxiliary material,

50 to 70 parts by weight of a moisture control material, 10 to 30 parts by weight of loess, and 5 to 15 parts by weight of zeolite.

It is preferable to perform the flipping operation of the mixture pile for about 2 to 7 days or about 2 to 3 days.

The fermentation mixture for food waste treatment according to the present invention has a constitution made by the above-mentioned method.

The method of treating food waste according to the present invention is characterized in that a food waste dewatering cake having a moisture content of 45 to 65% is mixed with a bacterium culture liquid for organic waste fermentation of 1.111% to 1.875% by weight of the dewatered cake and 100% to 150% Mixing a fermentation mixture prepared by the method of the present invention to form a mixture pellet; And a fermentation step of fermenting the mixture dummy for 15 to 20 days to make compost.

A portion of the compost made in the fermentation step may be used as a substitute for the fermentation mixture for the food waste disposal to further perform the process of the food waste disposal method, and a part of the compost made by the method may be used as a substitute for the fermentation mixture for food waste disposal The process according to the food waste disposal method may be further performed 6 to 7 times.

According to the present invention, not only the moisture control function is improved but also the activity of the aerobic fermenting microorganism is increased and the activity of the moisture contained in the fermented object is increased and the moisture inside the food waste is rapidly discharged to the outside The fermentation efficiency can be further improved as compared with the conventional method, and the food waste can be processed in a large amount in a short period of time.

According to the present invention, the compost produced by treating food waste can be reused in succession as a substitute for the fermentation mixture, and the amount of the moisture regulator can be drastically reduced as compared with the conventional method.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram showing a process for producing a fermentation mixture for food waste disposal according to the present invention;
FIG. 2 is a process diagram showing a food garbage disposal process according to the present invention,
FIG. 3 (a) is a photograph of mesophilic bacteria when the fermentation mixture according to the present invention is not added,
FIG. 3 (b) is a photograph of mesophilic bacteria when the fermentation mixture according to the present invention and the culture medium for Bacillus bacteria for fermentation of organic waste are fed,
Fig. 4 (a) is a photograph of high temperature bacteria when the fermentation mixture according to the present invention is not added,
FIG. 4 (b) is a photograph of high temperature bacteria when the fermentation mixture according to the present invention and the culture medium for Bacillus bacteria for fermentation of organic waste are fed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram showing a process for producing a fermentation mixture for food waste disposal according to the present invention; FIG.

 After the food waste is brought in (S1), the food waste is crushed and squeezed in the dehydrator and dehydrated (S2), and the food waste is made into a dehydrated cake having a moisture content of 45 to 65% (S3).

Fermentation auxiliary materials described later in the dehydration cake and commercially available Bacillus bacteria for fermentation of organic waste are put into a mixture and mixed evenly to prepare a dry pile of the mixture.

Bacillus bacteria for organic waste fermentation include those belonging to the species Bacillus thermophilis, Aneurinibacillus thermoaerophilus (KCCM 41604), Geobacillus thermoglucosidasius, KCCM 41418), Bacillus licheniformis (KCCM 11560), and Bacillus subtilis KB-68 (KFCC 11325).

Here, the fermentation auxiliary material is preferably added at about 9.4 to 10.5% of the weight of the dehydrated cake, and the Bacillus bacteria culture solution (pH 6 to 7, water temperature 22 to 35 ° C, oxygen supply amount 4.58 liters / Preferably about 1 to 1.5 tons, based on 80 to 90 tons of the dehydrated cake (S4).

The mixture pile is then fermented in a fermentation chamber. Since the anaerobic fermentation by the anaerobic microorganism is performed in the portion where air can not be smoothly supplied into the dry pile of the mixture in the fermentation field, a bad odor is generated and a good quality compost can not be obtained. Therefore, Aerated fermentation of about 15 to 16 days in winter (up to about 20 days in winter) while regularly (preferably every other day) inverting the pile of mixture, while supplying air to the dry pile of mixture through the air supply line below . Flipping is done about 2 to 7 days or 8 to 2 times depending on the season. Keep aerosol fermentation intact so that the air supply and the fermentation status are checked, while turning the mix pile upside down and feeding the air into the pile dry well. If the abnormality is found, the Bacillus Bacterium culture medium or the fermentation auxiliary material is introduced or the air supply amount is adjusted (S5).

When the fermentation is completed for about 15 to 20 days, the fermentation mixture for treating food waste according to the present invention is prepared (S6).

The process for manufacturing the fermented food material for food waste disposal according to the present invention may be used for food waste disposal.

The fermentation mixture according to the present invention increases the activity of aerobic fermenting microorganisms in a moisture control material (preferably, bark or compost with a moisture content of 15 to 30%) and increases the activity of moisture contained in the fermented object, It is a fermentation efficiency improvement by mixing several ingredients inducing quick release of moisture to the outside and aging. It is of course also possible to use chaff or sawdust instead of bran or compost.

The function of the fermentation auxiliary component used in the present invention will be described as follows.

Among the components of the fermentation auxiliary material, the yellow loess separates the water cell membrane in the food, thereby causing the water to evaporate and the bacteria in the loess to exothermically function to increase the composting temperature. This loess also plays a role of moisture regulator.

Zeolite is able to adsorb other particulate matter because the binding of each atom is loose and the moisture filling between the zeolite is discharged as a high heat, the skeleton remains intact. Because of this property, it is used as an adsorbent, and it is used as a molecular sieve (molecular sieve) to separate particulate matter of different sizes. It plays an important role in the adhesion of molecules such as loess or minerals to dehydration cake,

The fermentation auxiliary components were composed of various composition ratios and the results were as follows. Bacillus bacteria are preferably mixed in water at a rate of 1000 liters of water per 20 liters of commercially purchased bacillus bacteria, preferably pH 6-7, water temperature 22-35 ° C, oxygen supply 4.58 liters / minute For 7 to 10 days. In this example, 1.111% (weight ratio of about 90: 1) of the weight of the dewatered cake was used and 90 kg of the dewatered cake sample was used as the dewatering cake sample. Respectively.

<Experimental Example 1> division Mixed material ratio Duration of completion of first compost after mixing mixture Fermentation auxiliary material Moisture regulator 6000g 17th
ocher 2000g Zeolite (100 to 300 mesh) 1000g zymogen Bacillus culture medium 1.111% of the weight of the dewatered cake sample / day

<Experimental Example 2> division Mixed material ratio Duration of completion of first compost after mixing mixture Fermentation auxiliary material Moisture regulator 7000g 18th
ocher 1000g Zeolite (100 to 300 mesh) 500g zymogen Bacillus culture medium 1.111% of the weight of the dewatered cake sample / day

<Experimental Example 3> division Mixed material ratio Duration of completion of first compost after mixing mixture Fermentation auxiliary material Moisture regulator 6000g 15th
ocher 2000g Zeolite (100 to 300 mesh) 1000g zymogen Bacillus culture medium 1.111% of the weight of the dewatered cake sample / day

<Experimental Example 4> division Mixed material ratio Duration of completion of first compost after mixing mixture Fermentation auxiliary material Moisture regulator 5000g 19th
ocher 3000g Zeolite (100 to 300 mesh) 1500g zymogen Bacillus culture medium 1.111% of the weight of the dewatered cake sample / day

<Experimental Example 5> division Mixed material ratio Duration of completion of first compost after mixing mixture Fermentation auxiliary material Moisture regulator 5000g 20 days
ocher 3000g Zeolite (100 to 300 mesh) 1500g zymogen Bacillus culture medium 1.111% of the weight of the dewatered cake sample / day

<Experimental Example 6> division Mixed material ratio Duration of completion of first compost after mixing mixture Fermentation auxiliary material Moisture regulator 8000g 25th
ocher 500g Zeolite (100 to 300 mesh) 100g zymogen Bacillus culture medium 1.111% of the weight of the dewatered cake sample / day

<Experimental Example 7> division Mixed material ratio Duration of completion of first compost after mixing mixture Fermentation auxiliary material Moisture regulator 4000g 27th
ocher 4000g Zeolite (100 to 300 mesh) 1700g zymogen Bacillus culture medium 1.111% of the weight of the dewatered cake sample / day

Here, zeolite and activated carbon having a particle size of 100 to 300 mesh are used, but the particle size may be slightly increased or decreased. The smaller the particle size, the more effective the fermentation efficiency will be because it can be mixed more evenly into the dehydrated cake. If the particle size is larger, the fermentation efficiency will be somewhat reduced but it will not have a big influence.

The fermentation period was shortened compared to the conventional method in which only the moisture control agent was added to the fermentation auxiliary material. In particular, except for Experiments 6 and 7, the fermentation period was shortened to 20 days or less, and the fermentation state was also excellent. Experimental Example 3 showed the best results.

2 is a process diagram showing a food garbage disposal process according to the present invention.

Steps S11 to S13 are the same as S1 to S3 in Fig. Thereafter, the fermentation mixture according to the present invention and the Bacillus culture medium for fermentation of organic waste are mixed with the dehydrated cake. The fermentation mixture according to the present invention is mixed with a dehydrated cake and a 6: 4 (fermentation mixture: dehydrated water, (100% to 150% of the weight of the dewatered cake) at about 5: 5 (S14).

The dry pile of this mixture is fermented for 15 to 20 days in the fermentation field. While the dry pile of the mixture is deposited on the fermentation field, air is supplied to the dry pile of the mixture through the air supply pipe beneath the bottom of the fermentation field, and about 15 to 16 days is provided for about 20 days Aerobic fermentation. Flipping is done about 2 to 7 days or 8 to 2 times depending on the season. Keep aerosol fermentation intact so that the air supply and the fermentation status are checked, while turning the mix pile upside down and feeding the air into the pile dry well. Fermentation agent, fermentation auxiliary material, moisture control agent and the like are controlled and the fermentation management is performed while adjusting the air supply amount (S15).

When the fermentation is carried out for about 15 to 20 days in the above process, compost is produced by fermenting food waste (S16).

Some of the composts are shipped as compost, some are reused as a substitute for fermentation to make compost, and the sequenced compost is reused 6 to 7 times as a substitute for fermentation.

Observation results of the process of fermenting the dehydrated cake of food waste using the fermented mixture for food waste disposal according to the present invention are as follows.

1) Appearance

When the fermentation proceeded well, dark brown color was usually exhibited. In the case of the fermented mixture injection test using the fermentation auxiliary materials in Experimental Examples 1 to 5, the initial test was light brown, but the experiment turned dark brown.

2) Smell

Although the ripe fermented product generally produced the original smell of the compost, the ammonia odor of the food was largely exerted in the initial experiment. However, as the experiment proceeded, the fermented food additive test pieces prepared using the fermentation auxiliary materials in Experimental Examples 1 to 5 The stench was greatly reduced.

3) pH

When the fermentation proceeded vigorously, the pH rose to 7.0 ~ 8.0 and stabilized. At the initial stage, it showed a slight acidity, but the fermentation progressed and the pH rose to 7.0 or higher.

4) Water content

The optimum moisture content in the fermentation process was 35 to 45%. It was confirmed that the moisture content of the fermented food additive test samples prepared in Experimental Examples 1 to 5 was lower as the fermentation progressed, compared with the initial moisture content, This means that the moisture content is decreased by the microbial fermentation heat, so that the microbial growth was vigorously progressed in the fermented mixture preparation test using the fermentation auxiliary materials in Experimental Examples 1 to 5.

5) Microorganisms

In the case of the change of microbes during the composting process, there was a considerably smaller amount of microorganisms than the total number of microorganisms existing during the composting before the addition of the fermentation auxiliary material. However, after the addition of the fermenting additive made in the fermentation auxiliary materials in Experimental Examples 1 to 5, Was increased to 10 ⁷ / g. This indicates that fermentation proceeds actively after the addition of the fermentation auxiliary material according to the present invention.

3 (a) and 4 (a), when the fermented mixed material prepared using the fermentation auxiliary material according to the present invention is not fed, 30 ° C to 40 ° C) and high temperature (40 ° C to 70 ° C), respectively.

FIG. 3 (b) and FIG. 4 (b) are graphs showing the effect of the fermentation auxiliary agent (Experimental Example 3) prepared using the fermentation auxiliary agent according to the present invention on the medium temperature This is a photograph showing the mesophilic and thermophilic state at the time of arrival and high temperature (40 to 70 degrees C). As can be seen from these photographs, when a fermented mixture prepared by using the fermentation auxiliary material according to the present invention is added, fermentation proceeds more actively because the number of fermentation bacteria is much larger than that of the fermentation auxiliary agent.

6) Conclusion

As a result of the experiment after the administration of the fermentation mixture made using the fermentation auxiliary material, it was confirmed that the fermentation efficiency was significantly improved in the fermentation mixture injection test using the fermentation auxiliary material in Experimental Examples 1 to 5.

On the other hand, when a fermented mixture prepared by using the fermentation auxiliary material according to the present invention was put into a dry pile for 15 to 20 days, the compost was collected and reused as a substitute for the fermentation mixture. As a result, It was found that the function was deteriorated after a while. Since the reuse cycle of the compost for substituting the fermented mixture is generally 15 to 20 days, the fermentation mixture according to the present invention and the Bacillus culture medium should be injected again after 5 months from 3 months after the addition of the fermentation auxiliary material.

As a result of performing the actual food garbage disposal by using the fermentation field several times in the above manner, it was possible to obtain good food garbage disposal results that did not deviate from the results of the above experimental examples.

INDUSTRIAL APPLICABILITY The present invention can be suitably applied to organic wastes, particularly food waste.

Claims (9)

Preparing a fermentation auxiliary material for preparing a fermentation auxiliary material for food waste treatment;
A mixing step of mixing the fermentation auxiliary material for food garbage disposal and the culture medium of Bacillus bacteria for fermentation of organic waste into a food waste dewatering cake having a moisture content of 45 to 65% to form a mixture drying pile; And
And a fermentation step of fermenting the mixture pellet for 15 to 20 days to produce a fermentation mixture,
Wherein the fermentation auxiliary material in the mixing step is 9.4 to 10.5% of the weight of the dehydrated cake, the culture liquid of Bacillus bacteria is 1.111% to 1.875% of the weight of the dehydrated cake,
The Bacillus bacterium culture broth is obtained by mixing Bacillus bacterium in water for 7 to 10 days while supplying oxygen at a pH of 6 to 7 and a water temperature of 22 to 35 ° C,
The fermentation auxiliary material,
50 to 70 parts by weight of a moisture control material, 10 to 30 parts by weight of loess and 5 to 15 parts by weight of zeolite,
The size of the zeolite is 100 to 300 mesh,
Wherein the moisture regulator is a mixture of one or more of dry bark, sawdust, rice hull and compost having a water content of 15 to 30%. delete delete Preparing a fermentation auxiliary material for preparing a fermentation auxiliary material for food waste treatment;
A mixing step of mixing the fermentation auxiliary material for food garbage disposal and the culture medium of Bacillus bacteria for fermentation of organic waste into a food waste dewatering cake having a moisture content of 45 to 65% to form a mixture drying pile; And
And a fermentation step of fermenting the mixture pile for 15 to 20 days,
Wherein the fermentation auxiliary material in the mixing step is 9.4 to 10.5% of the weight of the dehydrated cake, the culture liquid of Bacillus bacteria is 1.111% to 1.875% of the weight of the dehydrated cake,
The Bacillus bacterium culture broth is obtained by mixing Bacillus bacterium in water for 7 to 10 days while supplying oxygen at a pH of 6 to 7 and a water temperature of 22 to 35 ° C,
The fermentation auxiliary material,
50 to 70 parts by weight of a moisture control material, 10 to 30 parts by weight of loess and 5 to 15 parts by weight of zeolite,
The size of the zeolite is 100 to 300 mesh,
The moisture control material is a mixture of any one or more of dry bark, sawdust, rice husk, and compost with a water content of 15 to 30%
And the drying pile of the mixture is flipped 7 to 8 times once every 2 to 3 days. delete A fermented mixture for the treatment of food waste produced by the method of claim 1. A food waste dewatering cake having a moisture content of 45 to 65% is mixed with a bacterium culture liquid for fermentation of organic waste having a weight of 1.111% to 1.875% by weight of the dewatered cake and a fermented mixture prepared by the method of the first aspect of 100% to 150% To form a dry pile of the mixture; And
And a fermentation step of fermenting the mixture pellet for 15 to 20 days to make compost. The food waste disposal method according to claim 7, wherein the portion of the compost made in the fermentation step is used as a substitute for the fermentation mixture. delete

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